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{{Short description|Luminous Wolf-Rayet star in the Galactic Center}}
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{{AfDM|page=G0.238-0.071 (2nd nomination)|year=2026|month=September|day=20|substed=yes|origtag=afdx|help=off}}
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{{Starbox begin}}
{{Starbox observe
| epoch = [[J2000.0]]
| constell = [[Sagittarius (constellation)|Sagittarius]]
| ra = {{RA|17|46|27.60}}<ref name=dong2011/>
| dec = {{DEC|-28|46|11.8}}<ref name=dong2011/>
}}
{{Starbox character
| type = [[Wolf–Rayet star|Wolf–Rayet]]<ref name=IsolatedWRGC/>
| class = WN11h<ref name=CMZ>{{cite journal |bibcode=2021A&A...649A..43C|title=Constraining the population of isolated massive stars within the Central Molecular Zone⋆|last1=Clark |first1=J. S. |last2=Patrick |first2=L. R. |last3=Najarro |first3=F.|last4=Evans |first4=C. J. |last5=Lohr |first5=M.  |journal=Astronomy & Astrophysics|year=2021 |volume=649  |doi=10.1051/0004-6361/202039205 |doi-access=free|arxiv=2102.08126 }}</ref>
}}
{{Starbox astrometry
| dist_ly = 26,000<ref name="GRAVITY"/>
| dist_pc = 7,972
| absmag_bol = –12.01
}}
{{Starbox detail
| source=<ref name=IsolatedWRGC>{{cite journal |last1=Mauerhan |first1=J. C. |last2=Cotera |first2=A. |last3=Dong |first3=H. |last4=Morris |first4=M. R. |last5=Wang |first5=Q. D. |last6=Stolovy |first6=S. R. |last7=Lang |first7=C. |title=Isolated Wolf-Rayet Stars and O Supergiants in the Galactic Center Region Identified Via Paschen-α Excess |journal=The Astrophysical Journal |date=2010 |volume=725 |issue=1 |page=188 |doi=10.1088/0004-637X/725/1/188 |arxiv=1009.2769 |bibcode=2010ApJ...725..188M }}</ref>
| mass =
| luminosity = 5,012,000
| radius = 39 - 48{{efn|name=radius1}}
| temperature = 39,500 - 44,000
| gravity =
| metal_fe =
| rotational_velocity =
| age_myr =
}}
{{Starbox catalogue
| names=[DWC2011] 56, [MCD2010] 18<ref name=SIMBAD>{{cite simbad |title=[MCD2010] G0.238-0.071 |access-date=2026-03-20 }}</ref>
}}
{{Starbox reference
| Simbad = MCD2010+G0.238-0.071
}}
{{Starbox end}}
'''G0.238-0.071''', also known as '''[DWC2011] 56''' or '''[MCD2010] 18''',<ref name=SIMBAD/> is a [[Wolf-Rayet Star]]<ref name=CMZ/> in the [[constellation]] of [[Sagittarius (constellation)|Sagittarius]]. It is located near the [[Galactic Center]],<ref name=dong2011>{{cite journal |last1=Dong |first1=H. |last2=Wang |first2=Q. D. |last3=Cotera |first3=A. |last4=Stolovy |first4=S. |last5=Morris |first5=M. R. |last6=Mauerhan |first6=J. |last7=Mills |first7=E. A. |last8=Schneider |first8=G. |last9=Calzetti |first9=D. |last10=Lang |first10=C. |title=Hubble Space Telescope Paschen α survey of the Galactic Centre: Data reduction and products |journal=Monthly Notices of the Royal Astronomical Society |date=2011 |volume=417 |issue=1 |page=114 |doi=10.1111/j.1365-2966.2011.19013.x |doi-access=free |arxiv=1105.1703 |bibcode=2011MNRAS.417..114D }}</ref> around 25,000 light years from [[Earth]].<ref name="GRAVITY">{{cite journal |author=R. Abuter |author2=A. Amorim |author3=M. Bauböck |author4=J. P. Berger |author5=H. Bonnet |author6=W. Brandner |author7=Y. Clénet |author8=V. Coudé du Foresto |author9=P. T. de Zeeuw |author10=J. Dexter |author11=G. Duvert |author12=A. Eckart |author13=F. Eisenhauer |author14=N. M. Förster Schreiber |author15=P. Garcia |author16=F. Gao |author17=E. Gendron |author18=R. Genzel |author19=O. Gerhard |author20=S. Gillessen |author21=M. Habibi |author22=X. Haubois |author23=T. Henning |author24=S. Hippler |author25=M. Horrobin |author26=A. Jiménez-Rosales |author27=L. Jocou |author28=P. Kervella |author29=S. Lacour |author30=V. Lapeyrère |author31=J.-B. Le Bouquin |author32=P. Léna |author33=T. Ott |author34=T. Paumard |author35=K. Perraut |author36=G. Perrin |author37=O. Pfuhl |author38=S. Rabien |author39=G. Rodriguez Coira |author40=G. Rousset |author41=S. Scheithauer |author42=A. Sternberg |author43=O. Straub |author44=C. Straubmeier |author45=E. Sturm |author46=L. J. Tacconi |author47=F. Vincent |author48=S. von Fellenberg |author49=I. Waisberg |author50=F. Widmann |author51=E. Wieprecht |author52=E. Wiezorrek |author53=J. Woillez |author54=S. Yazici |display-authors=6 |collaboration=The GRAVITY collaboration|date=April 2019|title=A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty|journal=Astronomy & Astrophysics|volume=625|page=L10|doi=10.1051/0004-6361/201935656|url=https://www.aanda.org/articles/aa/full_html/2019/05/aa35656-19/aa35656-19.html|arxiv=1904.05721|bibcode=2019A&A...625L..10G|s2cid=119190574}}</ref>
'''G0.238-0.071''', also known as '''[DWC2011] 56''' or '''[MCD2010] 18''',<ref name=SIMBAD/> is a [[Wolf-Rayet Star]]<ref name=CMZ/> in the [[constellation]] of [[Sagittarius (constellation)|Sagittarius]]. It is located near the [[Galactic Center]],<ref name=dong2011>{{cite journal |last1=Dong |first1=H. |last2=Wang |first2=Q. D. |last3=Cotera |first3=A. |last4=Stolovy |first4=S. |last5=Morris |first5=M. R. |last6=Mauerhan |first6=J. |last7=Mills |first7=E. A. |last8=Schneider |first8=G. |last9=Calzetti |first9=D. |last10=Lang |first10=C. |title=Hubble Space Telescope Paschen α survey of the Galactic Centre: Data reduction and products |journal=Monthly Notices of the Royal Astronomical Society |date=2011 |volume=417 |issue=1 |page=114 |doi=10.1111/j.1365-2966.2011.19013.x |doi-access=free |arxiv=1105.1703 |bibcode=2011MNRAS.417..114D }}</ref> around 25,000 light years from [[Earth]].<ref name="GRAVITY">{{cite journal |author=R. Abuter |author2=A. Amorim |author3=M. Bauböck |author4=J. P. Berger |author5=H. Bonnet |author6=W. Brandner |author7=Y. Clénet |author8=V. Coudé du Foresto |author9=P. T. de Zeeuw |author10=J. Dexter |author11=G. Duvert |author12=A. Eckart |author13=F. Eisenhauer |author14=N. M. Förster Schreiber |author15=P. Garcia |author16=F. Gao |author17=E. Gendron |author18=R. Genzel |author19=O. Gerhard |author20=S. Gillessen |author21=M. Habibi |author22=X. Haubois |author23=T. Henning |author24=S. Hippler |author25=M. Horrobin |author26=A. Jiménez-Rosales |author27=L. Jocou |author28=P. Kervella |author29=S. Lacour |author30=V. Lapeyrère |author31=J.-B. Le Bouquin |author32=P. Léna |author33=T. Ott |author34=T. Paumard |author35=K. Perraut |author36=G. Perrin |author37=O. Pfuhl |author38=S. Rabien |author39=G. Rodriguez Coira |author40=G. Rousset |author41=S. Scheithauer |author42=A. Sternberg |author43=O. Straub |author44=C. Straubmeier |author45=E. Sturm |author46=L. J. Tacconi |author47=F. Vincent |author48=S. von Fellenberg |author49=I. Waisberg |author50=F. Widmann |author51=E. Wieprecht |author52=E. Wiezorrek |author53=J. Woillez |author54=S. Yazici |display-authors=6 |collaboration=The GRAVITY collaboration|date=April 2019|title=A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty|journal=Astronomy & Astrophysics|volume=625|page=L10|doi=10.1051/0004-6361/201935656|url=https://www.aanda.org/articles/aa/full_html/2019/05/aa35656-19/aa35656-19.html|arxiv=1904.05721|bibcode=2019A&A...625L..10G|s2cid=119190574}}</ref>


Latest revision as of 04:07, 28 September 2026

G0.238-0.071, also known as [DWC2011] 56 or [MCD2010] 18,[1] is a Wolf-Rayet Star[2] in the constellation of Sagittarius. It is located near the Galactic Center,[3] around 25,000 light years from Earth.[4]

G0.238-0.071 is currently the most luminous star known in the Milky Way, having around 5 million times the luminosity of the Sun.[5] This also makes it among the most luminous stars ever discovered. It has a spectral type of WN11h[2] with an effective temperature between 39,500 and 44,000 K[5] which would give a radius between 39 and 48 times that of the Sun.Template:Efn Its mass is unknown but WNh stars with similar properties to G0.238-0.071 are massive, usually well over 100 times the mass of the Sun.[6]

Notes

Template:Notelist

References

  1. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
  2. ↑ 2.0 2.1 Cite error: Invalid <ref> tag; no text was provided for refs named CMZ
  3. ↑ Dong, H.; Wang, Q. D.; Cotera, A.; Stolovy, S.; Morris, M. R.; Mauerhan, J.; Mills, E. A.; Schneider, G.; et al. (2011). "Hubble Space Telescope Paschen α survey of the Galactic Centre: Data reduction and products". Monthly Notices of the Royal Astronomical Society 417 (1): 114. doi:10.1111/j.1365-2966.2011.19013.x. Bibcode: 2011MNRAS.417..114D. 
  4. ↑ R. Abuter; A. Amorim; M. Bauböck; J. P. Berger; H. Bonnet; W. Brandner; Y. Clénet; V. Coudé du Foresto; et al. (April 2019). "A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty". Astronomy & Astrophysics 625: L10. doi:10.1051/0004-6361/201935656. Bibcode: 2019A&A...625L..10G. https://www.aanda.org/articles/aa/full_html/2019/05/aa35656-19/aa35656-19.html. 
  5. ↑ 5.0 5.1 Cite error: Invalid <ref> tag; no text was provided for refs named IsolatedWRGC
  6. ↑ Dong, H.; Wang, Q. D.; Morris, M. R. (2012). "A multiwavelength study of evolved massive stars in the Galactic Centre". Monthly Notices of the Royal Astronomical Society 425 (2): 884. doi:10.1111/j.1365-2966.2012.21200.x. Bibcode: 2012MNRAS.425..884D. 

Template:Stars of Sagittarius

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