Talk:Helium star
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editThis article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): Tiakortman.
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Article
editThe topic discussed is a rare case. The original Helium stars were class B stars. Said: Rursus (☻) 21:02, 20 October 2008 (UTC)
- Fixed, but instead the article is approaching a disambiguation page! Said: Rursus (☻) 19:48, 29 October 2008 (UTC)
Bibliography
!. http://science.sciencemag.org.ezproxy.pvc.maricopa.edu/content/347/6226/1126 - talk about HVS star 2. http://ic.galegroup.com.ezproxy.pvc.maricopa.edu/ic/scic/AcademicJournalsDetailsPage/AcademicJournalsDetailsWindow?disableHighlighting=&displayGroupName=Journals&docIndex=&source=&prodId=&mode=view&limiter=&display-query=&contentModules=&action=e&sortBy=&windowstate=normal&currPage=&dviSelectedPage=&scanId=&query=&search_within_results=&p=SCIC&catId=&u=mcc_pv&displayGroups=&documentId=GALE%7CA377862230&activityType=BasicSearch&failOverType=&commentary= 3. http://ky5ry5jk2j.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=The+unusual+%CE%B3-ray+burst+GRB+101225A+from+a+helium+star%2Fneutron+star+merger+at+redshift+0.33&rft.jtitle=Nature&rft.au=Th%C3%B6ne%2C+C.+C&rft.au=de+Ugarte+Postigo%2C+A&rft.au=Fryer%2C+C.+L&rft.au=Page%2C+K.+L&rft.date=2011-11-30&rft.issn=0028-0836&rft.eissn=1476-4687&rft.volume=480&rft.issue=7375&rft.spage=72&rft.epage=74&rft_id=info:doi/10.1038%2Fnature10611&rft.externalDBID=n%2Fa&rft.externalDocID=10_1038_nature10611¶mdict=en-US — Preceding unsigned comment added by Tiakortman (talk • contribs) 07:04, 15 February 2018 (UTC)
Summary of Future Additions
editDiscoveries of Helium stars- "GALEX J184559.8−413827 (or J1845−4138 for short), was initially classified as a faint helium-rich "hot subdwarf," but new spectroscopic observations reveal that this star is more hydrogen-deficient than previously thought."[1] This was in 2011 and was labeled a "hot subdwarf." This means that GALEX J184559.8-413827 is characterized with being hotter and larger than the sun, while also being completely devoid of hydrogen. From these classifications, this hot subdwarf is considered to be a extreme helium star. In South Africa, the Southern Africa Large Telescope (SALT) has been monitoring this massive helium star's high-resolution spectrum.
A Hypervelocity star (HVSs) called US 708, HVS 2 has been labeled a helium star. Being the most fast rotator, it is thought to be a remnant of a thermonuclear supernova.[2]
Origin of Helium stars After a binary mass transfer, a helium star is formed.[3]
Turning into a supernova The star will begin to grow in radius and evolve upon exploding into a supernova.[4]
Merging with a helium star Often when a supernova dies, long gamma ray bursts are emitted. In 2010 it was observed that the aftermath of a supernova death caused a helium star to merge with a neuron star. This led to the merger going through a common envelope phase (losing it's hydrogen) and emitting gamma ray bursts. [5]
References
- ^ https://phys.org/news/2017-06-rare-extreme-helium-star-astronomers.html.
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(help) - ^ http://science.sciencemag.org.ezproxy.pvc.maricopa.edu/content/347/6226/1126.
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(help) - ^ http://ic.galegroup.com.ezproxy.pvc.maricopa.edu/ic/scic/AcademicJournalsDetailsPage/AcademicJournalsDetailsWindow?disableHighlighting=&displayGroupName=Journals&docIndex=&source=&prodId=&mode=view&limiter=&display-query=&contentModules=&action=e&sortBy=&windowstate=normal&currPage=&dviSelectedPage=&scanId=&query=&search_within_results=&p=SCIC&catId=&u=mcc_pv&displayGroups=&documentId=GALE%7CA377862230&activityType=BasicSearch&failOverType=&commentary=.
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(help) - ^ http://ic.galegroup.com.ezproxy.pvc.maricopa.edu/ic/scic/AcademicJournalsDetailsPage/AcademicJournalsDetailsWindow?disableHighlighting=&displayGroupName=Journals&docIndex=&source=&prodId=&mode=view&limiter=&display-query=&contentModules=&action=e&sortBy=&windowstate=normal&currPage=&dviSelectedPage=&scanId=&query=&search_within_results=&p=SCIC&catId=&u=mcc_pv&displayGroups=&documentId=GALE%7CA377862230&activityType=BasicSearch&failOverType=&commentary=.
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(help) - ^ http://ky5ry5jk2j.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=The+unusual+%CE%B3-ray+burst+GRB+101225A+from+a+helium+star%2Fneutron+star+merger+at+redshift+0.33&rft.jtitle=Nature&rft.au=Th%C3%B6ne%2C+C.+C&rft.au=de+Ugarte+Postigo%2C+A&rft.au=Fryer%2C+C.+L&rft.au=Page%2C+K.+L&rft.date=2011-11-30&rft.issn=0028-0836&rft.eissn=1476-4687&rft.volume=480&rft.issue=7375&rft.spage=72&rft.epage=74&rft_id=info:doi/10.1038%2Fnature10611&rft.externalDBID=n%2Fa&rft.externalDocID=10_1038_nature10611¶mdict=en-US.
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Helium main sequence diagram?
editI don't know if this exists in the literature, but as the article compares the "He MS" to the main sequence per se, wouldn't it be useful to present an HR-type diagram showing the helium main sequence, especially as compared to the normal/hydrogen one? Or failing that, some statement clarifying how they relate. 109.255.211.6 (talk) 17:41, 31 May 2022 (UTC)
- A diagram would be good, a comparison would be great, but I can't find one that is suitable for Wikipedia use. Lithopsian (talk) 19:06, 31 May 2022 (UTC)
- Fair enough. Any possibility of clarifying where it lies? To the left of the H MS? To the right? Does it overlie it? 109.255.211.6 (talk) 03:57, 5 June 2022 (UTC)