| 词条 | AFGL 2591 |
| 释义 |
|type = REFLECTION |type2 = molecular cloud |name = AFGL 2591 |image = |caption = |epoch = J2000 |subtype = |class = |ra = {{RA|20|29|24.867}}[1] |dec = {{DEC|+40|11|19.41}}[1] |dist_ly = |dist_pc = 3330±110 |appmag_v = |appdia = 0.51' [1] |size_v = |constellation = Cygnus |radius_ly = |radius_pc = est. 0.87–2.0 |dimensions = |absmag_v = |notes = high-mass star-forming region[6] |names = AFGL 2591 IRAS 20275+4001 RAFGL 2591[1] }}AFGL 2591 is a star forming region in the constellation Cygnus. Its dense cloud of gas and dust make its interior invisible to optical telescopes. Images in the infrared show a bright young stellar object, with an associated reflection nebula seen as a glowing cone projecting from the young star. A cluster of stars is forming within the molecular cloud, but most of the infrared radiation is coming from this star, AFGL 2591-VLA3.[6] Initially AFGL 2591 was thought to be a single young, massive star expelling clouds of gas and dust in multiple events. It was estimated to be about 10 times the mass of the sun and at a distance of only {{convert|1000|pc|ly|abbr=off}}.[1] References1. ^{{cite web |title=Gemini Spies Strong Stellar Gusts in Nearby Massive Star |url=http://www.gemini.edu/node/48 |date=23 July 2001 |publisher=Gemini Observatory |accessdate=28 April 2014}} [2][3]2. ^1 2 {{cite journal |last1=Sanna |first1=A. |last2= Reid |first2=M. J. |last3=Carrasco-González |first3=C.|last4=Menten |first4=K. M. |last5=Brunthaler |first5=A. |last6=Moscadelli |first6=L. |last7=Rygl |first7=K. L. J. |display-authors=3 |title=Clustered star formation and outflows in AFGL 2591 |url=http://iopscience.iop.org/0004-637X/745/2/191/article |journal=The Astrophysical Journal |year=2012 |volume=745 |number=2 |pages=191–200 |doi=10.1088/0004-637X/745/2/191 |arxiv=1111.0843 |bibcode=2012ApJ...745..191S}} 3. ^1 2 3 4 {{cite web |title=Basic data: RAFGL 2591 — Young Stellar Object |url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=AFGL+2591 |work=SIMBAD |publisher=Centre de Données astronomiques de Strasbourg |accessdate=28 April 2014}} }}{{Nebula-stub}} 4 : Cygnus (constellation)|Molecular clouds|Reflection nebulae|Star-forming regions |
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