Stephenson 2 DFK 49: Difference between revisions

'''Stephenson 2 DFK 49''' or '''St2-11''' is a putative post [[red supergiant]]<ref name=humphreys2020>{{cite journal |doi=10.3847/1538-3881/abab15 |arxiv=2008.01108 |last1=Humphreys |first1=Roberta M. |last2=Helmel |first2=Greta |last3=Jones |first3=Terry J. |last4=Gordon |first4=Michael S. |title=Exploring the Mass Loss Histories of the Red Supergiants |year=2020 |journal=[[The Astronomical Journal]]|volume=160 |issue=3 |page=145 |bibcode=2020AJ....160..145H |s2cid=220961677 |doi-access=free }}</ref> star in the constellation [[Scutum]], in the massive open cluster [[Stephenson 2]]. It is possibly one of the [[List of largest known stars|largest known stars]] with a radius estimated to be between {{convert|1074|solar radius|km au|abbr=off|lk=on}}<ref name="Davies2007" /> to {{convert|1,300|solar radius|km au|abbr=off|lk=off}},<ref name=humphreys2020>{{cite journal |doi=10.3847/1538-3881/abab15 |arxiv=2008.01108 |last1=Humphreys |first1=Roberta M. |last2=Helmel |first2=Greta |last3=Jones |first3=Terry J. |last4=Gordon |first4=Michael S. |title=Exploring the Mass Loss Histories of the Red Supergiants |year=2020 |journal=[[The Astronomical Journal]]|volume=160 |issue=3 |page=145 |bibcode=2020AJ....160..145H |s2cid=220961677 |doi-access=free }}</ref> corresponding to volumes of 1.2 and 2.2 times that of the Sun respectively. If it was placed at the center of the [[Solar System]], its [[photosphere]] willwould potentially approach or engulf [[Jupiter]]'s orbit. It loses mass at a very high rate, resulting in large amounts of [[infrared excess]].