# Epsilon Corvi

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Epsilon_Corvi
> Markdown URL: https://mediated.wiki/source/Epsilon_Corvi.md
> Source: https://en.wikipedia.org/wiki/Epsilon_Corvi
> Source revision: 1292014318
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Short description|Red giant star in the constellation Corvus}}
{{Starbox begin
 | name = ε Corvi
}}
{{Starbox image
 | image=
{{Location mark
|image=Corvus constellation map.svg
|float=center
|alt=
|label=
|position=right
|width=260
|mark=Red circle.svg
|mark_width=10
|mark_link=ε Corvi
|x=586|y=464
}}
|caption=Location of ε Corvi (circled)
}}
{{Starbox observe 
 | epoch    = J2000 
 | ra       = {{RA|12|10|07.48058}}<ref name=aaa474_2_653/>
 | dec      = {{DEC|−22|37|11.1620}}<ref name=aaa474_2_653/>
 | appmag_v = +3.024<ref name=aaass22_9/>
 | constell = [Corvus](/source/Corvus_(constellation))
}}
{{Starbox character 
 | class    = K2&nbsp;III<ref name=houk1979/>
 | b-v      = +1.318<ref name=aaass22_9/>
 | u-b      = +1.458<ref name=aaass22_9/>
 | variable = 
}} 
{{Starbox astrometry 
 | radial_v = +4.9<ref name=scfs/>
 | prop_mo_ra  = −71.74
 | prop_mo_dec = +10.25
 | pm_footnote = <ref name=aaa474_2_653/>
 | parallax = 10.26
 | p_error  = 0.16
 | parallax_footnote = <ref name=aaa474_2_653/>
 | absmag_v = {{val|-1.82|+0.15|-0.14}}<ref name=aj135_3_892/>
}}
{{Starbox detail 
 | source   = <ref name=Reffert2015/>
 | mass     = {{val|2.97|0.43}}
 | radius   = {{val|56.65|2.24}}
 | luminosity  = {{val|930|54}}
 | gravity  = {{val|1.42|0.10}}
 | temperature = {{val|4239|57|fmt=commas}}
 | metal_fe = {{val|-0.18|0.10}}
 | rotational_velocity = 1.0<ref name=aaa439_1_227/>
 | rotation = 
 | age_myr  = {{val|590|210}}
}}
{{Starbox catalog
 | names = 2&nbsp;Crv, [BD](/source/Bonner_Durchmusterung)−21°3487, [FK5](/source/FK5)&nbsp;453, [HD](/source/Henry_Draper_Catalogue)&nbsp;105707, [HIP](/source/Hipparcos)&nbsp;59316, [HR](/source/Star_catalogue)&nbsp;4630, [SAO](/source/Star_catalogue)&nbsp;180531<ref name=SIMBAD/>
}}
{{Starbox reference
 | Simbad = eps+Crv
}}
{{Starbox end}}	
'''Epsilon Corvi''' (ε Crv, ε Corvi) is a [star](/source/star) in the southern [constellation](/source/constellation) of [Corvus](/source/Corvus_(constellation)). It has the traditional name '''Minkar''' {{IPAc-en|'|m|I|N|k|ɑr}}, from [Arabic](/source/Arabic) '''منقار''' ''minqar'' meaning "beak [of the crow]"<ref>[https://www.wdl.org/en/item/18412/view/1/321/ Al-Sufi, Book Of Fixed Stars, Constellation: The Crow]</ref> The [apparent visual magnitude](/source/apparent_visual_magnitude) is +3.0<ref name=aaass22_9/> and it is located at a distance of {{Convert|318|ly|pc|abbr=off|lk=on}} from [Earth](/source/Earth).<ref name=aaa474_2_653/>

In [Chinese](/source/Chinese_language), {{lang|zh|軫宿}} ({{lang|zh-Latn|Zhěn Sù}}), meaning ''[Chariot](/source/Chariot_(Chinese_constellation)) (asterism)'', refers to an asterism consisting of ε Corvi, [γ Corvi](/source/Gamma_Corvi), [δ Corvi](/source/Delta_Corvi) and [β Corvi](/source/Beta_Corvi).<ref>{{in lang|zh}} ''中國星座神話'', written by 陳久金. Published by 台灣書房出版有限公司, 2005, {{ISBN|978-986-7332-25-7}}.</ref> Consequently, ε Corvi itself is known as {{lang|zh|軫宿二}} ({{lang|zh-Latn|Zhěn Sù èr}}, {{langx|en|the Second Star of Chariot}}.).<ref>{{in lang|zh}} [http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_m.htm 香港太空館 - 研究資源 - 亮星中英對照表] {{webarchive |url=https://web.archive.org/web/20110130063012/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_m.htm |date=January 30, 2011 }}, Hong Kong Space Museum. Accessed on line November 23, 2010.</ref>

Epsilon Corvi is a [red giant](/source/red_giant) with a [stellar classification](/source/stellar_classification) of K2&nbsp;III, having consumed the hydrogen at its core and [evolved](/source/stellar_evolution) away from the [main sequence](/source/main_sequence). It has about three times the Sun's mass, while having expanded to 57 times the [Sun's radius](/source/Sun's_radius). The [photosphere](/source/photosphere) irradiates 930 times more energy than the Sun and has an [effective temperature](/source/effective_temperature) of {{val|4239|u=K}},<ref name=Reffert2015/> giving it an orange hue that is characteristic of a K-type star.<ref name=csiro/> It spent much of its life as a main sequence star of spectral type B5V.<ref name=kalereps>{{citation | last1=Kaler | first1=James B. (Jim)| url=http://stars.astro.illinois.edu/sow/minkar.html | title=Minkar  | work=Stars | publisher=[University of Illinois](/source/University_of_Illinois) | access-date=12 July 2015}}</ref>

== References ==
{{reflist|30em|refs=

<ref name=aaa474_2_653>{{citation | first=F. | last=van Leeuwen |date=November 2007 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 |arxiv = 0708.1752 | s2cid=18759600 }}</ref>

<ref name=Reffert2015>{{Citation |last=Reffert |first=Sabine |last2=Bergmann |first2=Christoph |last3=Quirrenbach |first3=Andreas |last4=Trifonov |first4=Trifon |last5=Künstler |first5=Andreas |date=2015-02-01 |title=Precise radial velocities of giant stars. VII. Occurrence rate of giant extrasolar planets as a function of mass and metallicity |journal=Astronomy and Astrophysics |volume=574 |pages=A116 |doi=10.1051/0004-6361/201322360 |bibcode=2015A&A...574A.116R  |issn=0004-6361|arxiv=1412.4634 }} [https://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A%2BA/574/A116&HIP=59316 Epsilon Corvi's database entry] at [VizieR](/source/VizieR).</ref>

<ref name=houk1979>{{citation | title=Michigan catalogue of two-dimensional spectral types for the HD stars | volume=4 | last1=Houk | first1=Nancy | location=Ann Arbor, Michigan | publisher=Dept. of Astronomy, University of Michigan | date=1979 | bibcode=1988mcts.book.....H }}</ref>

<ref name=scfs>{{citation | display-authors=1 | title=Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions | last1=Wielen | first1=R. | last2=Schwan | first2=H. | last3=Dettbarn | first3=C. | last4=Lenhardt | first4=H. | last5=Jahreiß | first5=H. | last6=Jährling | first6=R. | journal=Veroeffentlichungen des Astronomischen Rechen-Instituts Heidelberg | publisher=Astronomisches Rechen-Institut Heidelberg | issue=35 | date=1999 | volume=35 | page=1 | bibcode=1999VeARI..35....1W }}</ref>

<ref name=aaass22_9>{{citation | last1=Celis S. | first1=L. | title=Photoelectric photometry of late-type variable stars | journal=Astronomy and Astrophysics Supplement Series | volume=22 | pages=9–17 |date=October 1975 |bibcode = 1975A&AS...22....9C }}</ref>

<ref name=aaa439_1_227>{{citation | display-authors=1 | last1=Melo | first1=C. H. F. | last2=de Laverny | first2=P. | last3=Santos | first3=N. C. | last4=Israelian | first4=G. | last5=Randich | first5=S. | last6=Do Nascimento | first6=J. D. Jr. | last7=de Medeiros | first7=J. R. | title=On the nature of lithium-rich giant stars. Constraints from beryllium abundances | journal=Astronomy and Astrophysics | volume=439 | issue=1 | pages=227–235 |date=August 2005 | doi=10.1051/0004-6361:20041805 | bibcode=2005A&A...439..227M |arxiv = astro-ph/0504133 | s2cid=10580797 }}</ref>

<ref name=SIMBAD>{{citation | title=MINKAR -- Variable Star | work=SIMBAD | publisher=[Centre de Données astronomiques de Strasbourg](/source/Centre_de_Donn%C3%A9es_astronomiques_de_Strasbourg) | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Minkar | access-date=2012-01-23 }}</ref>

<ref name=csiro>{{citation |title=The Colour of Stars |date=December 21, 2004 |work=Australia Telescope, Outreach and Education |publisher=[Commonwealth Scientific and Industrial Research Organisation](/source/Commonwealth_Scientific_and_Industrial_Research_Organisation) |url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |access-date=2012-01-16 |url-status=dead |archive-url=https://web.archive.org/web/20120318151427/http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |archive-date=2012-03-18 }}</ref>

<ref name=aj135_3_892>{{citation | display-authors=1 | last1=Carney | first1=Bruce W. | last2=Gray | first2=David F. | last3=Yong | first3=David | last4=Latham | first4=David W. | last5=Manset | first5=Nadine | last6=Zelman | first6=Rachel | last7=Laird | first7=John B. | title=Rotation and Macroturbulence in Metal-Poor Field Red Giant and Red Horizontal Branch Stars | journal=The Astronomical Journal | volume=135 | issue=3 | pages=892–906 |date=March 2008 | doi=10.1088/0004-6256/135/3/892 | bibcode=2008AJ....135..892C |arxiv = 0711.4984 | s2cid=2756572 }}</ref>

}}

{{Stars of Corvus}}

Category:Corvus (constellation)
Corvi, Epsilon
Minkar
Corvi, 02
059316
Category:K-type giants
4630
105707
Category:Durchmusterung objects

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Adapted from the Wikipedia article [Epsilon Corvi](https://en.wikipedia.org/wiki/Epsilon_Corvi) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Epsilon_Corvi?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.