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1 Which main-sequence stars are the most massive? - Quora
https://www.quora.com/Which-main-sequence-stars-are-the-most-massive
Well if you limit the stars that are only on the main sequence, then the blue giants would be the largest of the stars. However, some massive stars have ...
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2 Which main sequence stars are the most massive? - Study.com
https://homework.study.com/explanation/which-main-sequence-stars-are-the-most-massive.html
The largest main sequence stars are those with radii 10 times the mass of the Sun and are known as O-class stars. These stars live the shortest amount of ...
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3 Main sequence - Wikipedia
https://en.wikipedia.org/wiki/Main_sequence
Stars on this band are known as main-sequence stars or dwarf stars. These are the most numerous true stars in the universe and include the Sun.
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4 What Is the Most Massive Star? - Space.com
https://www.space.com/41313-most-massive-star.html
R136a1 is the most massive known star in the universe, but it is far from unique. A 2018 study of the Tarantula Nebula, also called 30 Doradus ...
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5 Lecture 16: Stellar Structure and Evolution
https://sites.ualberta.ca/~pogosyan/teaching/ASTRO_122/lect16/lecture16.html
The most massive stars stars are the Type O stars which are 50 times more massive than the Sun. These stars are very luminous and use up their available H very ...
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6 Main Sequence Stars - Australia Telescope National Facility |
https://www.atnf.csiro.au/outreach/education/senior/astrophysics/stellarevolution_mainsequence.html
The majority of stars in the galaxy, including our Sun, Sirius and Alpha Centauri A and B are all main sequence stars. The Sun's relative longevity and ...
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7 Blue main sequence stars are the most massive - Brainly.com
https://brainly.com/question/3688721
Blue stars have a temperature dependency to color, and this relationship between color and brightness or luminosity for hydrogen-burning stars ...
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8 Typical stars are balls of hot glowing gas which vary ...
https://www.le.ac.uk/se/centres/sci/selfstudy/eab4.htm
High mass stars (stars with masses greater than three times the mass of the Sun) are the largest, hottest and brightest Main Sequence stars and blue, ...
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9 Types of Stars | Stellar Classification, Lifecycle, and Charts
https://astrobackyard.com/types-of-stars/
They can be categorized according to their mass, and temperature. Stars ... However, main-sequence Red dwarf stars are the most common kind of stars in our ...
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10 HR Diagram
https://people.highline.edu/iglozman/classes/astronotes/hr_diagram.htm
Most stars fall on the Main Sequence. On the Main Sequence, the more massive stars are bigger, hotter, more luminous, and die faster.
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11 Top 10 Most Massive Stars in the Universe - ThoughtCo
https://www.thoughtco.com/the-top-most-massive-stars-3073630
The star R136a1 currently holds the record as the most massive star known to exist in the universe. It's more than 265 times the mass of our ...
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12 Stars | Science Mission Directorate
https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
Stars are the most widely recognized astronomical objects, and represent the ... As shown in the Hertzsprung-Russell Diagram, Main Sequence stars span a ...
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13 H-R Diagram - Teacher's Guide - SkyServer
http://skyserver.sdss.org/dr8/en/proj/teachers/advanced/hr/specifics.asp
Main sequence stars are hydrogen-burning stars like our Sun. More massive main sequence stars are hotter, and are found at the top left of the strip. Less ...
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14 Astronomy Lecture Number 17
https://web.njit.edu/~gary/202/Lecture17.html
As it turns out, the red stars on the Main Sequence are smaller than the Sun, ... So most stars in the galaxy today are low-mass stars, for two reasons: 1) ...
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15 HR Diagram
https://www4.uwsp.edu/physastr/kmenning/Astr311/Lect26.pdf
Most stars (~90%) are on the main sequence ... the star. – M type stars are the most common. ... We cannot directly measure the mass of an isolated star.
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16 Spectroscopic evolution of massive stars near the main ...
https://www.aanda.org/articles/aa/full_html/2021/01/aa39337-20/aa39337-20.html
We did not include rotation, and focused on the main sequence (MS) and the ... We predict that the most massive stars all start their evolution as O2 dwarfs ...
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17 Determining the Sizes of Stars Using the H-R Diagram
https://ps.uci.edu/~observat/sites/default/files/HS_Activity_HRDiagram.pdf
For main sequence stars, their luminosity, temperature and radius are set by their mass. The most massive stars are the hottest and most luminous, ...
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18 AST 101: Midterm 2 Solutions
http://www.astro.sunysb.edu/fwalter/AST101/t2.html
Red dwarf stars are the most common kind of star in our galaxy. Which of the following is NOT a part of a comet? corona. The corona is found in the Sun and ...
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19 Main Sequence Lifetime | COSMOS
https://astronomy.swin.edu.au/cosmos/m/main+sequence+lifetime
The overall lifespan of a star is determined by its mass. Since stars spend roughly 90% of their lives burning hydrogen into helium on the main sequence ...
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20 Measuring the Age of a Star Cluster | Astronomy 801
https://www.e-education.psu.edu/astro801/content/l7_p6.html
Most of the high mass stars have reached the Main Sequence, while some of the. At an early time stamp in the star cluster's formation, what we will call t=0, ...
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21 H-R Diagram Interactive - McGraw Hill
https://glencoe.mheducation.com/sites/0010202009/student_view0/chapter13/h-r_diagram_interactive.html
The most massive ones are red giants, and the least massive ones are white dwarfs. B), The red stars are the heaviest, and the blue ones the ...
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22 18.4 The H–R Diagram – Astronomy - UCF Pressbooks
https://pressbooks.online.ucf.edu/astronomybc/chapter/18-4-the-h-r-diagram/
Discuss the physical properties of most stars found at different locations on the H–R diagram, such as radius, and for main sequence stars, mass. In this ...
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23 The Life of a Star
https://www.astro.keele.ac.uk/workx/starlife/StarpageS_26M.html
It will show all the stages that a small star, and a massive star have to go ... Stage 5 - A star of one solar mass remains in main sequence for about 10 ...
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24 15.2 Patterns Among Stars
http://www.astro.gsu.edu/~parksj/files/astr_1020_lecture_8.pdf
Most stars fall somewhere on the main sequence of the H-R diagram. ... Mass measurements of main-sequence stars show that the hot, blue stars are much.
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25 Bennett_Ch15_pt2.pdf - Astronomy at Swarthmore College
https://astro.swarthmore.edu/astro1/reading/Bennett_Ch15_pt2.pdf
Stars spend most of their lives as main-sequence stars that fuse hydrogen into helium in their cores. The most massive stars, which are also the hottest and ...
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26 Evolution of Stars - main sequence
http://ircamera.as.arizona.edu/NatSci102/NatSci/lectures/starevolution.htm
The most massive stars, 60-80 times as massive as the sun, lie on the main sequence at the very high luminosity and high temperature tip. The great outpouring ...
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27 Chapter 18 Section 18.4: The H-R Diagram
https://uwm.pressbooks.pub/astronomy/chapter/chapter-18-section-18-3-diameters-of-stars/
Discuss the physical properties of most stars found at different locations on the H–R diagram, such as radius, and for main sequence stars, mass. In this ...
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28 Physical World Test 1 (part 2) Flashcards | Chegg.com
https://www.chegg.com/flashcards/physical-world-test-1-part-2-6640bee6-867c-4a65-baeb-075d3e78430e/deck
T/F: The most massive main sequence stars are red in color. False. T/F: The least massive main sequence stars are blue in color.
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29 Star Classification - Types of Stars - Enchanted Learning
https://www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml
A blue giant is a huge, very hot, blue star. It is a post-main sequence star that burns helium. Supergiant. A supergiant is the largest known type of star; some ...
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30 Main Sequence - UCL
https://www.mssl.ucl.ac.uk/www_astro/outreach/School/Stars/mainseq.html
This means that the amount of fuel is proportional to the total mass of the star. The most massive stars have the shortest lifetimes. Because they have most ...
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31 Chapter 25 Review--Burke (Flashcards) - Quia
https://www.quia.com/jg/1235512list.html
Red, These main-sequence stars are the most massive. ; Blue, These main-sequence stars are the least massive. ; the hottest, According to the H-R diagram, whch ...
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32 Astronomy 122 - Measuring the Stars
https://pages.uoregon.edu/jimbrau/astr122/Notes/Chapter17.html
Most main-sequence stars are low-mass stars, and only a small fraction are much more massive than the Sun The main-sequence star's radius and luminosity ...
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33 Main Sequence Stars - YouTube
https://www.youtube.com/watch?v=s1E1ZiiFSec
NormandaleAstronomy
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34 Which main sequence stars from your table are the
https://www.coursehero.com/file/pjh1ln5/Which-main-sequence-stars-from-your-table-are-the-least-massive-What-kind-of/
Is it among the most or least massive of main-sequencestars?Our sun is a dwarf star. Yellow dwarfs are small, main sequence stars. The Sun is ayellow dwarf. A ...
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35 post-main-sequence star - Index
http://astro.vaporia.com/start/postmainsequencestar.html
The phases it goes through, which depend upon the mass of the star, potentially include giant star phases. As in the earlier of the life of the stars, the most ...
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36 22.1 Evolution from the Main Sequence to Red Giants
https://openstax.org/books/astronomy-2e/pages/22-1-evolution-from-the-main-sequence-to-red-giants
This table shows that the most massive stars spend only a few million years on the main sequence. A star of 1 solar mass remains there for ...
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37 Stars Honors | Science Quiz - Quizizz
https://quizizz.com/admin/quiz/5cdd55638d88cd001d4331b1/stars-honors
Based on the graph, a star of which color most likely has the lowest luminosity? answer choices ... Which main-sequence stars are the most massive?
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38 15_Testbank.doc
https://www.ucolick.org/~max/Astro18-2014/Lectures/Lecture12%202014%20Atmospheres/Bennett_TCP7_Testbank_Word/15_Testbank.doc
32) Which of the following is the most common type of main-sequence star? ... E) Low-mass stars have the same temperature and luminosity as high-mass stars.
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39 19.3 Stars of Different Masses
https://lifeng.lamost.org/courses/astrotoday/CHAISSON/AT319/HTML/AT31903.HTM
The time required for an interstellar cloud to become a main-sequence star also depends strongly on its mass. The most massive cloud fragments heat up to ...
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40 How do scientists determine the ages of stars? Is the ...
https://www.scientificamerican.com/article/how-do-scientists-determi/
The most massive stars are very bright and blue-hot; ... "The duration of the stable, or 'main sequence,' phase depends on a star's mass.
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41 Galaxies and Stars - HMXEarthScience
https://hmxearthscience.com/Warehouse/Regents%20Questions/Galaxies%20and%20Stars%20KEY.pdf
Which two stars are most similar in luminosity? ... luminosity of main sequence stars? ... 56. A Red giant star would most likely have a temperature of ...
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42 G. C. Sloan: Main Sequence Stars, Giants, and Supergiants
https://users.physics.unc.edu/~gcsloan/fun/star.html
Stars more massive than the Sun not only burn out more quickly, but they burn much hotter and brighter. Less massive stars burn cooler and ...
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43 The Different Types Of Stars - WorldAtlas
https://www.worldatlas.com/space/the-different-types-of-stars.html
How long a star lives, its mass, temperature, and brightness are all a result of where it falls on the main sequence. O-type stars are the most ...
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44 Which main-sequence stars are the most massive? A: red B
https://science.blurtit.com/4382734/which-main-sequence-stars-are-the-most-massive-a-red-b-orange-c-yellow-d-blue
› which-main-sequence-stars-...
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45 Main Sequence Star: Life Cycle and Other Facts - The Planets
https://theplanets.org/types-of-stars/main-sequence-star-life-cycle-and-other-facts/
The Orion Nebula is a famous natal cloud that gives birth to many main-sequence stars. This deep-sky object is in the Milky Way. It is visible to the naked eye ...
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46 The Lives of High Mass Stars - NMSU Astronomy
http://astronomy.nmsu.edu/tharriso/ast110/class19.html
Note that they start their main sequence lives with 0.3X the mass of the Sun, ... We have discussed the life history of a low mass star--most of the events ...
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47 Main sequence star - Verse and Dimensions Wikia - Fandom
https://verse-and-dimensions.fandom.com/wiki/Main_sequence_star
› wiki › Mai...
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48 Stars | Facts, Information, History & Definition - The Nine Planets
https://nineplanets.org/star/
The most massive and luminous star ever discovered is a Wolf-Rayet star named R136a1. It has around 315 solar masses and 8.7 million solar ...
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49 Main sequence - New World Encyclopedia
https://www.newworldencyclopedia.org/entry/Main_sequence
The apparent upper limit for a main sequence star is 120–200 solar masses. Stars above this mass can not radiate energy fast enough to remain stable, so any ...
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50 What is a Main Sequence Star? | Guide to Astronomy
https://www.storyboardthat.com/space-words/main-sequence-star
Main sequence stars are the most common type in the Universe. Main sequence stars are stable. They fuse hydrogen nuclei together to form helium nuclei, ...
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51 The Physics of Stars Class 14 Notes: The Main Sequence
https://websites.pmc.ucsc.edu/~glatz/astr_112/lectures/notes14.pdf
The most basic output of the numerical codes is a prediction for the luminosity and effective temperature of a star of a given mass and composition. The figures.
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52 LIFE CYCLES OF STARS
https://www.sccboe.org/cms/lib/AL50000450/Centricity/Domain/22/3%20Article%20and%20Questions.pdf
When a main sequence star begins to run out of hydrogen fuel, the star becomes a ... dwarf. 7. The most massive stars will explode and end their lives as ...
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53 what is a star
https://britastro.org/vss/whatstar.html
The largest part of its lifetime is spent as a main sequence star during which hydrogen is being converted to helium balancing gravitational contraction so that ...
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54 Stellar Masses - Caltech Astronomy
https://sites.astro.caltech.edu/~george/ay20/eaa-stellarmasses.pdf
During the main sequence the highest-mass stars lose a significant fraction of their mass owing to stellar winds. A star that begins life with 120M⊙ will lose ...
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55 Star Life Cycle - ASPIRE
http://sunshine.chpc.utah.edu/Labs/StarLife/glossary.html
The most massive stars will leave the main sequence relatively quickly, becoming Supergiants. A supergiant star has enough mass that it will be able to fuse not ...
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56 HR DIAGRAM The Main Sequence | Boyce Astro
https://boyce-astro.org/wp-content/uploads/BRIEF-Video-Lesson-HR-DIAGRAM-The-Main-Sequence.pdf
The Masses are represented on this diagram in relation to 1. Solar Mass (our Sun). As you would figure, the most massive stars are on the upper left of the HR ...
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57 Stellar Evolution III: After the main sequence
http://spiff.rit.edu/classes/phys301/lectures/star_death/star_death.html
in low-mass stars, in which the central temperatures are between 10 million and 15 million Kelvin, the proton-proton chain is most common. in high-mass stars, ...
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58 Main sequence star - Physics and Universe
https://physicsanduniverse.com/main-sequence-star/
There is also a lower mass limit of the main sequence star. If the mass is even lower, ... The most massive stars observed are claimed to be about 150M_o .
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59 The Main Sequence - Week 5 | Coursera
https://es.coursera.org/lecture/evolvinguniverse/the-main-sequence-WS4Vo
The definition of the main sequence is it's the locus on this Hr diagram. Where stars burn ... The highest mass stars are the most luminous, hottest ones.
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60 Stars - Sun.org
https://www.sun.org/encyclopedia/stars
The most massive star that we know of is R136a1 with its 265 solar masses, a surface temperature of more than 50000 degrees Kelvin and a ...
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61 Main Sequence - Universe Today
https://www.universetoday.com/52252/main-sequence/
stars on the main sequence are powered by hydrogen fusion, which takes place in their cores, and the main sequence is just a sequence of mass ( ...
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62 main sequence - The Worlds of David Darling
https://www.daviddarling.info/encyclopedia/M/mainseq.html
A star's position and length of stay on the main sequence depend critically on mass. The most massive stars – the hot, blue-white O stars and B stars ...
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63 Mass and the Properties of Main Sequence Stars - IfA
https://home.ifa.hawaii.edu/users/lin/ast110-6/ast110-22_files/frame.htm
Mass is the most important properties of the main-sequence stars. It determine their luminosity, surface temperature, radius, and lifetime.
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64 Main Sequence Stars - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/physics-and-astronomy/main-sequence-stars
While both main sequence stars and giant planets are self-gravitating bodies ... Most interesting about the diagram is the prediction in one heavily used ...
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65 What is the largest hydrogen-burning star?
https://astronomy.stackexchange.com/questions/11594/what-is-the-largest-hydrogen-burning-star
I assume by largest, you mean largest radius. Well it won't be VV Cep B since this is merely a B-type main sequence star. O-type main sequence stars are ...
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66 IAL 23: The Post-Main-Sequence Life of Stars - UNLV Physics
https://www.physics.unlv.edu/~jeffery/astro/ial/ial_023.html
The most massive K-type main-sequence stars have mass ∼ 0.8 M_☉ and have stellar lifetime of ∼ 15 Gyr. Now ∼ 15 Gyr is greater than age of the observable ...
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67 Hertzsprung-Russell diagram | Definition & Facts | Britannica
https://www.britannica.com/science/Hertzsprung-Russell-diagram
The Sun lies near the middle of the main sequence, and stars spend most of their lives on the main ... The most massive stars explode in supernovas.
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68 High Mass Stars
https://www.roe.ac.uk/~wkmr/Teaching/DiscAstron/Highmassstars.pdf
The incredibly rapid fusion rates mean that high-mass stars cannot live very long. – A 25 solar mass star only spends a few million years on the main-sequence.
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69 sample exam 3: for stellar evolution
http://faculty.etsu.edu/hensong/Astronomy2/ASTRII-Practice-Exam3.html
37. A star which has a main sequence mass of 10 solar masses will. most likely end up as. a. a T Tauri star. b. a white dwarf. c. a neutron star.
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70 Interpreting HR Diagram
https://ecampus.matc.edu/mihalj/astronomy/test5/Interpreting_HR.htm
For example, an eight solar mass star will have a main sequence lifetime of 100 million year. The most massive stars will run out of hydrogen fuel in a mere ...
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71 Stellar Evolution
https://sceweb.uhcl.edu/blanford/16StellarEvolution.pdf
main-sequence turnoff begins to develop. Yet, most of the highest-mass stars are still on the main sequence. ▫ After 109 years, the ...
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72 • Classifying stars: HR diagram • Luminosity, radius, and ...
http://astro.physics.uiowa.edu/~kaaret/s09/L12_starsmainseq.pdf
Main sequence is when a star is burning hydrogen in its core. The luminosity and temperature of a main-sequence star are set by its mass. More massive.
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73 22.1: Evolution from the Main Sequence to Red Giants
https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Book%3A_Astronomy_(OpenStax)/22%3A_Stars_from_Adolescence_to_Old_Age/22.01%3A_Evolution_from_the_Main_Sequence_to_Red_Giants
Since hydrogen is the most abundant element in stars, this process can maintain the star's equilibrium for a long time. Thus, all stars remain ...
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74 The End Of The Sun
https://faculty.wcas.northwestern.edu/infocom/The%20Website/large.html
Stars that are less massive or only a few times more massive than the Sun evolve ... 1 – Of the 140 main-sequence stars nearest Earth, only 6 are brighter ...
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75 Main Sequence Star: Our Sun's Thermonuclear Reaction
https://earthhow.com/main-sequence-star/
The sun is so massive that it's 99.9% of the mass in our solar system. But there was just enough behind for gravity to build up other things ...
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76 Discovery Space
https://www.ea.gr/ep/d-space/index.asp?Cat_id=638
In the HR diagram, where will you find the least massive stars? And the most massive stars? If I double the mass of a main sequence star, the luminosity ...
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77 Stars - Main Sequence - ASPIRE
http://aspire.cosmic-ray.org/Labs/OldStarLife/starlife_sequence.html
The more massive stars can fuse carbon into even heavier elements, which is where most of the heavy elements in the universe are made.
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78 Star in a Box Worksheet - Beginning with solutions
https://lco.global/documents/31/siabbeginnerwithsolutions.pdf
main sequence. 5. In which stage of life will the Sun undergo the most change? ... Where do the different mass stars lie on the main sequence?
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79 l5S1 - JILA
https://jila.colorado.edu/~ajsh/courses/astr1120_03/text/chapter5/l5S1.htm
Massive main sequence stars are much more luminous than the Sun for two reasons: (1) the gas inside massive stars has lower density, so the radiation can leak ...
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80 MASS LOSS IN PRE-MAIN-SEQUENCE STARS VIA ...
https://iopscience.iop.org/article/10.1088/0004-637X/760/1/9
1997; Johnstone et al. 2012). In addition, with the exception of a few very strongly accreting systems where the X-ray variability is at least in part accretion ...
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81 Stage 7: Red Giant or Supergiant - Lives and Deaths of Stars
https://www.astronomynotes.com/evolutn/s5.htm
Massive main sequence stars will expand much further to become supergiants. Betelgeuse, the bright red star in the top left corner of the ...
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82 Types of Stars: A Guide to Stellar Classification | Star Facts
https://www.star-facts.com/types-of-stars/
Pre-main-sequence stars can be either T Tauri stars of Herbig Ae/Be stars, depending on their mass. T Tauri stars have masses of up to 2 solar masses, and ...
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83 Free Science Flashcards about astro111NTest3 - StudyStack
https://www.studystack.com/flashcard-1291218
Which main sequence star has the lowest mass? ... Which element is the dead end for cores of the most massive stars? Iron. On an H-R diagram, stellar radii ...
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84 Star Mass and Density | Science at Your Doorstep
https://scienceatyourdoorstep.com/2018/06/13/star-mass-and-density/
It's true. Main-sequence stars seem to have densities similar to the sun. Stars that are much larger—the giants and supergiants—tend to be less ...
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85 Live of Stars, Chap. 11 - Olivet Nazarene University
http://web.olivet.edu/astronomy/Lectures/Chap11.html
The more massive a star is, the faster it goes through its main sequence phase. Because of the greater mass, gravity presses down with greater force on the ...
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86 Massive main sequence stars evolving at the Eddington limit
https://arxiv.org/abs/1506.02997
Abstract: The evolution of massive stars even on the main sequence is not yet well understood. Due to the steep mass-luminosity relation, ...
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87 An overview of how main sequence stars work
https://homepages.wmich.edu/~korista/msstars.html
In fact the sizes of main sequence stars scale more rapidly with mass, ... stars, this is the fusion of hydrogen into helium in their central most regions.
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88 Lecture 14: The Main Sequence
https://www.astronomy.ohio-state.edu/ryden.1/ast162_4/notes14.html
A main sequence star is powered by fusion of hydrogen into helium in its core. ... High-mass main sequence stars have shorter lifetimes than ...
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89 Understanding the Main Sequence - Teach Astronomy
https://www.teachastronomy.com/textbook/Properties-of-Stars/Understanding-the-Main-Sequence/
High mass main sequence stars are larger, more luminous, and have hotter photospheres than low mass main sequence stars. • The main sequence on the H-R diagram ...
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90 Stellar Evolution - Chandra X-ray Observatory
https://chandra.harvard.edu/edu/formal/stellar_ev/story/index3.html
All main sequence stars with a mass less than ~8 solar masses are sometimes referred to as dwarf stars, with the coolest, least massive ...
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91 List of Different Star Types - Star Classification & Guide
https://www.astronomytrek.com/list-of-different-star-types/
Around 90 percent of the stars in the Universe are main sequence stars, including our sun. Main sequence stars typically range from between one ...
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92 the structure of main-sequence stars - detailed stellar models
http://www.vikdhillon.staff.shef.ac.uk/teaching/phy213/phy213_detailed.html
The density (and pressure) in the Sun drops to about 0.1% of its central value at about 0.5R . This is a characteristic of most stars, in which the mass is ...
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93 Stellar Evolution Part 2: Main Sequence Stars - AstroCamp
https://astrocamp.org/blog/stars-part2/
Hydrogen fusion takes hydrogen ions and turns them into helium, creating massive amounts of energy in the process. The outwards radiation ...
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94 What are Different Types of Stars and What They Mean
https://eartheclipse.com/space/types-of-stars.html
Ultraviolet dwarfs—most massive main sequence stars.
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95 STARS AND NEBULAS - Hubble Space Telescope
https://hubblesite.org/science/stars-and-nebulas
The most massive star clusters, containing tens and hundreds of thousands of stars, were mostly formed early on in the universe, about 13 billion years ago.
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96 The Pre-main Sequence: Challenges and Prospects for ...
https://www.frontiersin.org/articles/10.3389/fspas.2022.914738/full
As of March 2022, seven types of pulsations have been discovered theoretically and observationally in pre-main sequence stars. Sorted from most massive to least ...
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97 The ages of pre-main-sequence stars
https://academic.oup.com/mnras/article/310/2/360/1047159
Instead, accreting pre-main-sequence stars of around a solar mass are likely ... In any of these cases, most of the stellar surface is left exposed and free ...
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