G0.238-0.071 - Revision history

Idea at 04:07, 28 September 2026

2026-09-28T04:07:05Z

← Older revision		Revision as of 04:07, 28 September 2026
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	~~{{Short description\|Luminous Wolf-Rayet star in the Galactic Center}}~~
	~~<!-- Please do not remove or change this AfD message until the discussion has been closed. -->~~
	~~{{AfDM\|page=G0.238-0.071 (2nd nomination)\|year=2026\|month=September\|day=20\|substed=yes\|origtag=afdx\|help=off}}~~
	~~<!-- End of AfD message, feel free to edit beyond this point -->~~
	~~{{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>

Idea: original contribuors... https://en.wikipedia.org/w/index.php?title=G0.238-0.071&action=history

2026-09-28T04:06:51Z

original contribuors... https://en.wikipedia.org/w/index.php?title=G0.238-0.071&action=history

New page

{{Short description|Luminous Wolf-Rayet star in the Galactic Center}}

{{AfDM|page=G0.238-0.071 (2nd nomination)|year=2026|month=September|day=20|substed=yes|origtag=afdx|help=off}}

{{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 is currently the most luminous star known in the [[Milky Way]], having around 5 million times the luminosity of the [[Sun]].<ref name=IsolatedWRGC/> This also makes it among the [[List of most luminous stars|most luminous stars]] ever discovered. It has a spectral type of WN11h<ref name=CMZ/> with an [[effective temperature]] between 39,500 and 44,000 [[Kelvin|K]]<ref name=IsolatedWRGC/> which would give a radius between 39 and 48 times that of the [[Sun]].{{efn|name=radius1}} 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]].<ref>{{cite journal |last1=Dong |first1=H. |last2=Wang |first2=Q. D. |last3=Morris |first3=M. R. |title=A multiwavelength study of evolved massive stars in the Galactic Centre |journal=Monthly Notices of the Royal Astronomical Society |date=2012 |volume=425 |issue=2 |page=884 |doi=10.1111/j.1365-2966.2012.21200.x |doi-access=free |arxiv=1204.6298 |bibcode=2012MNRAS.425..884D }}</ref>

== Notes ==
{{notelist|refs=

{{efn | name=radius1 | Applying the [[Stefan-Boltzmann Law]] with a nominal [[sun|solar]] [[effective temperature]] of 5,772 [[Kelvin|K]]:
:<math>\sqrt{(5,772/39,500)^4 * 5,012,000} = 48\ R_\odot</math>
:<math>\sqrt{(5,772/44,000)^4 * 5,012,000} = 39\ R_\odot</math>
}}
}}

==References==
{{reflist}}

{{Stars of Sagittarius}}

{{Authority control}}

[[Category:Sagittarius (constellation)]]
[[Category:Wolf–Rayet stars]]

{{Star-stub}}