| 词条 | V4650 Sagittarii |
| 释义 |
| name = V4650 Sagittarii }}{{Starbox image | image = | caption = V4650 Sgr is the very bright object just off the left edge of this image of the Quintuplet Cluster, with only its diffraction spikes visible. | credit = HST\IMCOS (WFC3) }}{{Starbox observe | constell = Sagittarius | epoch = J2000 | equinox = J2000 | ra = {{nowrap|{{RA|17|46|17.982}}[1]}} | dec = {{nowrap|{{DEC|-28|49|03.46}}[1]}} | appmag_v = }}{{Starbox character | class= | type=LBV | appmag_1_passband=B | appmag_1=19.3[1] | appmag_2_passband=R | appmag_2=16.4[1] | appmag_3_passband=J | appmag_3=12.310[1] | appmag_4_passband=H | appmag_4=8.970[1] | appmag_5_passband=K | appmag_5=7.090[1] | variable=LBV[2] }}{{Starbox astrometry | radial_v = | prop_mo_ra = | prop_mo_dec = | parallax = | p_error = | parallax_footnote = | dist_ly = | dist_pc =8,000[9] | absmag_v = | absmag_bol ={{Starbox detail | source = [3] | mass = 46 | radius = 350 | luminosity = 1,770,000 | temperature = 11,300 | age= }}{{Starbox catalog | names = V4650 Sagittarii, qF 362, 2MASS J17461798-2849034, SSTGC 629806 }}{{Starbox reference | Simbad = 2MASS+J17461798-2849034 }}{{Starbox end}} V4650 Sagittarii (qF362) is a luminous blue variable star (LBV) in the constellation of Sagittarius. Located some 25,000 light years away, the star is positioned on the edge of a starburst cluster known as the Quintuplet cluster. DiscoveryV4650 Sgr was first catalogued in 1996 as star 362 in a list of stars in the galactic centre region near the Quintuplet Cluster.[4] The acronym qF is used for stars in the list and so the star name is qF 362. The acronym FMM is also used, hence FMM 362.[5] The LBV nature of qF 362 was not recognised until 1999.[6] It is one of three LBVs close to the Quintuplet Cluster, all highly luminous stars.[7] V4650 was discovered using infrared telescopes. It is extremely faint at optical wavelengths due to interstellar extinction. The 2MASS survey recorded it at 17th magnitude in red light and 19th magnitude in blue light, while it is a 7th magnitude object in K band infrared.[1] PropertiesV4650 Sgr is calculated to be one of the most luminous stars known, at {{solar luminosity|1,700,000}}. It is considered to be a bona-fide luminous blue variable, although it has not been observed to change temperature from the S Doradus minimum strip to a cooler outburst state.[8] The infrared brightness has varied between magnitude 7.0 and 7.9.[2] It is calculated to have a temperature of 11,300 K and a radius of {{solar radius|350}}. Unlike both the two nearby LBVs, V4650 Sgr has no detectable associated nebulosity.[7] References1. ^1 2 3 4 5 6 7 {{cite journal|bibcode=2003yCat.2246....0C|title=VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)|journal=VizieR On-line Data Catalog: II/246. Originally published in: 2003yCat.2246....0C|volume=2246|pages=0|author1=Cutri|first1=R. M.|last2=Skrutskie|first2=M. F.|last3=Van Dyk|first3=S.|last4=Beichman|first4=C. A.|last5=Carpenter|first5=J. M.|last6=Chester|first6=T.|last7=Cambresy|first7=L.|last8=Evans|first8=T.|last9=Fowler|first9=J.|last10=Gizis|first10=J.|last11=Howard|first11=E.|last12=Huchra|first12=J.|last13=Jarrett|first13=T.|last14=Kopan|first14=E. L.|last15=Kirkpatrick|first15=J. D.|last16=Light|first16=R. M.|last17=Marsh|first17=K. A.|last18=McCallon|first18=H.|last19=Schneider|first19=S.|last20=Stiening|first20=R.|last21=Sykes|first21=M.|last22=Weinberg|first22=M.|last23=Wheaton|first23=W. A.|last24=Wheelock|first24=S.|last25=Zacarias|first25=N.|year=2003}} {{Stars of Sagittarius}}{{DEFAULTSORT:LBV G0.120-0.048}}2. ^1 {{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S|volume=1|display-authors=etal|author1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}} 3. ^1 {{Cite journal | last1 = Najarro | first1 = F. | last2 = Figer | first2 = D. F. | last3 = Hillier | first3 = D. J. | last4 = Geballe | first4 = T. R. | last5 = Kudritzki | first5 = R. P. | title = Metallicity in the Galactic Center: The Quintuplet Cluster | doi = 10.1088/0004-637X/691/2/1816 | journal = The Astrophysical Journal | volume = 691 | issue = 2 | pages = 1816 | year = 2009 | pmid = | pmc = |arxiv = 0809.3185 |bibcode = 2009ApJ...691.1816N }} 4. ^{{cite journal|bibcode=1996ASPC..102..263F|title=Hot Stars in the Quintuplet|journal=The Galactic Center|volume=102|pages=263|author1=Figer|first1=Donald F.|last2=Morris|first2=Mark|last3=McLean|first3=Ian S.|year=1996}} 5. ^{{cite journal|bibcode=1999MNRAS.304L..10G|title=Luminous variables in the Quintuplet cluster|journal=Monthly Notices of the Royal Astronomical Society|volume=304|pages=L10|author1=Glass|first1=I. S.|last2=Matsumoto|first2=S.|last3=Carter|first3=B. S.|last4=Sekiguchi|first4=K.|year=1999|doi=10.1046/j.1365-8711.1999.02454.x}} 6. ^{{cite journal|bibcode=1999ApJ...514..202F|title=Massive Stars in the Quintuplet Cluster|journal=The Astrophysical Journal|volume=514|pages=202|author1=Figer|first1=Donald F.|last2=McLean|first2=Ian S.|last3=Morris|first3=Mark|year=1999|doi=10.1086/306931|arxiv = astro-ph/9903281 }} 7. ^1 {{cite journal|bibcode=2014ApJ...785..120L|arxiv=1403.5298|title=Nature versus Nurture: Luminous Blue Variable Nebulae in and near Massive Stellar Clusters at the Galactic Center|journal=The Astrophysical Journal|volume=785|issue=2|pages=120|author1=Lau|first1=R. M.|last2=Herter|first2=T. L.|last3=Morris|first3=M. R.|last4=Adams|first4=J. D.|year=2014|doi=10.1088/0004-637X/785/2/120}} 8. ^{{cite journal|bibcode=2012A&A...538A..47N|title=The first X-ray survey of Galactic luminous blue variables|journal=Astronomy & Astrophysics|volume=538|pages=A47|author1=Nazé|first1=Y.|last2=Rauw|first2=G.|last3=Hutsemékers|first3=D.|year=2012|doi=10.1051/0004-6361/201118040|arxiv = 1111.6375 }} 4 : Luminous blue variables|Sagittarius (constellation)|Objects with variable star designations|2MASS objects |
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