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HD 316285

May 03, 2024

HDE 316285 is a blue supergiant star in the constellation Sagittarius. It is a candidate luminous blue variable and lies about 6,000 light years away in the direction of the Galactic Center.

HDE 316285

A mid-infrared view of the shell around HD 316285
Credit: NASA Spitzer Space Telescope
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 17h 48m 14.03721s[1]
Declination −28° 00′ 53.1212″[1]
Apparent magnitude (V) 9.60[2]
Characteristics
Spectral type B0Ieq[3]
U−B color index +0.61[2]
B−V color index +1.67[2]
Variable type cLBV[4]
Astrometry
Proper motion (μ) RA: −2.155[1] mas/yr
Dec.: −4.556[1] mas/yr
Parallax (π)0.3010 ± 0.0294 mas[1]
Distance1,900[4] pc
Absolute magnitude (MV)−8.4[5]
Details
Mass18.6[6] M☉
Radius75[5] R☉
Luminosity275,000[7] L☉
Surface gravity (log g)0.74[6] cgs
Temperature15,000[7] K
Metallicity [Fe/H]−0.49[6] dex
Other designations
V4375 Sagittarii, HD 316285, HIP 87136, CD −27°11944, SAO 185776, GCRV 67373, MWC 272, AAVSO 1741-27B
Database references
SIMBADdata

Discovery edit

HD 316285 was identified in 1925 as an unusual star having P Cygni lines in its spectrum, lines with both emission and absorption components offset by a doppler shift.[8] It was classified as a Be star although it is now known to be a supergiant and the class of Be stars excludes supergiants,[9] and was included in the Mount Wilson Observatory catalogue of B and A stars with bright lines of hydrogen (MWC) as entry 272.[10] In 1956, it was reported that the emission was due to an expanding atmosphere rather than the circumstellar discs of less evolved Be stars.[11] In 1972 it was discovered to have an infrared excess, an unusually high emission at infrared wavelengths due to surrounding warm dust.[12]

In 1961, HD 316285 was catalogued as planetary nebula Bl3-11,[13] although that classification was quickly cast into doubt.[14][15]

Variability edit

 
A visual band light curve for V4375 Sagittarii, plotted from INTEGRAL Optical Monitoring Camera data[16]

HD 316285 is listed in the General Catalogue of Variable Stars as a variable Be star with a range of about one tenth of a magnitude.[17] The International Variable Star Index classifies it as an S Doradus variable[18] and it is considered to be a candidate luminous blue variable.[4]

Properties edit

The spectrum shows that HD 316285 has only 1.5 times as much hydrogen as helium and elevated levels of carbon, nitrogen, and oxygen, so it can be identified as a highly evolved star. It has been calculated to be losing mass at the rate of M☉ every four thousand years via its stellar wind.[5]

Gaia astrometry suggests a distance much larger than the accepted 1.9kpc,[19][1] and would imply a much higher luminosity. It may even lie close to the Galactic Center.[20]

HD 316285 has been identified as a possible type II-b or type IIn supernova candidate in modelling of the fate of stars 20 to 25 times the mass of the Sun. It has been shown that these supernovae may explode directly from stars in an LBV phase after spending time as a red supergiant.[21]

A possible companion has been reported on the basis of a helical outflow of material apparently originating from HD 316285. This would be caused by a jet being twisted into a spiral shape by orbital motion.[22]

References edit

  1. ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.
  3. ^ Lopes, D. F.; Damineli Neto, A.; De Freitas Pacheco, J. A. (1992). "A spectroscopic study of luminous peculiar B-type stars". Astronomy and Astrophysics. 261: 482. Bibcode:1992A&A...261..482L.
  4. ^ a b c Nazé, Y.; Rauw, G.; Hutsemékers, D. (2012). "The first X-ray survey of Galactic luminous blue variables". Astronomy & Astrophysics. 538: A47. arXiv:1111.6375. Bibcode:2012A&A...538A..47N. doi:10.1051/0004-6361/201118040. S2CID 43688343.
  5. ^ a b c Hillier, D. J.; Crowther, P. A.; Najarro, F.; Fullerton, A. W. (1998). "An optical and near-IR spectroscopic study of the extreme P Cygni-type supergiant HDE 316285". Astronomy & Astrophysics. 340: 483–96. Bibcode:1998A&A...340..483H.
  6. ^ a b c Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardevol, J.; Casamiquela, L.; Figueras, F.; Jimenez-Arranz, O.; Jordi, C.; Monguio, M.; Romero-Gomez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "VizieR Online Data Catalog: StarHorse2, Gaia EDR3 photo-astrometric distances (Anders+, 2022)". Vizier Online Data Catalog. Bibcode:2022yCat.1354....0A.
  7. ^ a b van Genderen, A. M. (2001). "S Doradus variables in the Galaxy and the Magellanic Clouds". Astronomy & Astrophysics. 366 (2): 508–31. Bibcode:2001A&A...366..508V. doi:10.1051/0004-6361:20000022.
  8. ^ Merrill, P. W. (1925). "Two stellar spectra of the P Cygni type". Astrophysical Journal. 61: 418. Bibcode:1925ApJ....61..418M. doi:10.1086/142900.
  9. ^ Merrill, P. W.; Humason, M. L.; Burwell, C. G. (1925). "Discovery and Observations of Stars of Class Be". Astrophysical Journal. 61: 389. Bibcode:1925ApJ....61..389M. doi:10.1086/142899.
  10. ^ Merrill, Paul W.; Burwell, Cora G. (1933). "Catalogue and Bibliography of Stars of Classes B and a whose Spectra have Bright Hydrogen Lines". Astrophysical Journal. 78: 87. Bibcode:1933ApJ....78...87M. doi:10.1086/143490.
  11. ^ Merrill, Paul W. (1956). "Stars with expanding atmospheres". Vistas in Astronomy. 2 (1): 1375–1380. Bibcode:1956VA......2.1375M. doi:10.1016/0083-6656(56)90065-4.
  12. ^ Kleinmann, S.; Kuhi, L. V. (1972). "Mass Loss and Infrared Excesses in Hot Stars". Publications of the Astronomical Society of the Pacific. 84 (502): 766. Bibcode:1972PASP...84..766K. doi:10.1086/129377.
  13. ^ Blanco, V. M. (1961). "A catalogue of Half emission objects in the galactic center region". Contr. From the Bosscha Observ. Lembang. 13: 1. Bibcode:1961CoBos..13....1B.
  14. ^ Vorontsov-Veliaminov, B. A.; Kostiakova, E. B.; Dokuchaeva, O. D.; Arkhipova, V. P. (1975). "Planetary nebulae near the galactic center". Soviet Astronomy. 19: 163. Bibcode:1975SvA....19..163V.
  15. ^ Frew, D. J.; Bojicic, I. S.; Parker, Q. A. (2013). "A catalogue of integrated Halpha fluxes for 1258 Galactic planetary nebulae". Monthly Notices of the Royal Astronomical Society. 431 (1): 2–26. arXiv:1211.2505. Bibcode:2013MNRAS.431....2F. doi:10.1093/mnras/sts393. S2CID 119174103.
  16. ^ "OMC Archive". OMC Archive. The Astronomical Data Centre at CAB. Retrieved 19 December 2021.
  17. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  18. ^ Watson, C. L. (2006). "The International Variable Star Index (VSX)". The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science. Held May 23–25. 25: 47. Bibcode:2006SASS...25...47W.
  19. ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  20. ^ Smith, Nathan; Aghakhanloo, Mojgan; Murphy, Jeremiah W.; Drout, Maria R.; Stassun, Keivan G.; Groh, Jose H. (2019-09-01). "On the Gaia DR2 distances for Galactic luminous blue variables". Monthly Notices of the Royal Astronomical Society. 488 (2): 1760–1778. arXiv:1805.03298. Bibcode:2019MNRAS.488.1760S. doi:10.1093/mnras/stz1712. ISSN 0035-8711.
  21. ^ Groh, J. H.; Meynet, G.; Ekström, S. (2013). "Massive star evolution: luminous blue variables as unexpected supernova progenitors". Astronomy & Astrophysics. 550: 4. arXiv:1301.1519. Bibcode:2013A&A...550L...7G. doi:10.1051/0004-6361/201220741. S2CID 119227339. L7.
  22. ^ Lau, R. M.; Hankins, M. J.; Herter, T. L.; Morris, M. R.; Mills, E. A. C.; Ressler, M. E. (2016). "An Apparent Precessing Helical Outflow from a Massive Evolved Star: Evidence for Binary Interaction". The Astrophysical Journal. 818 (2): 117. arXiv:1512.07639. Bibcode:2016ApJ...818..117L. doi:10.3847/0004-637X/818/2/117. S2CID 118391443.

May 03, 2024
316285, 316285, blue, supergiant, star, constellation, sagittarius, candidate, luminous, blue, variable, lies, about, light, years, away, direction, galactic, center, 316285a, infrared, view, shell, around, credit, nasa, spitzer, space, telescope, observation,. HDE 316285 is a blue supergiant star in the constellation Sagittarius It is a candidate luminous blue variable and lies about 6 000 light years away in the direction of the Galactic Center HDE 316285A mid infrared view of the shell around HD 316285Credit NASA Spitzer Space Telescope Observation dataEpoch J2000 Equinox J2000 Constellation Sagittarius Right ascension 17h 48m 14 03721s 1 Declination 28 00 53 1212 1 Apparent magnitude V 9 60 2 Characteristics Spectral type B0Ieq 3 U B color index 0 61 2 B V color index 1 67 2 Variable type cLBV 4 AstrometryProper motion m RA 2 155 1 mas yr Dec 4 556 1 mas yrParallax p 0 3010 0 0294 mas 1 Distance1 900 4 pcAbsolute magnitude MV 8 4 5 DetailsMass18 6 6 M Radius75 5 R Luminosity275 000 7 L Surface gravity log g 0 74 6 cgsTemperature15 000 7 KMetallicity Fe H 0 49 6 dex Other designationsV4375 Sagittarii HD 316285 HIP 87136 CD 27 11944 SAO 185776 GCRV 67373 MWC 272 AAVSO 1741 27B Database referencesSIMBADdata Contents 1 Discovery 2 Variability 3 Properties 4 ReferencesDiscovery editHD 316285 was identified in 1925 as an unusual star having P Cygni lines in its spectrum lines with both emission and absorption components offset by a doppler shift 8 It was classified as a Be star although it is now known to be a supergiant and the class of Be stars excludes supergiants 9 and was included in the Mount Wilson Observatory catalogue of B and A stars with bright lines of hydrogen MWC as entry 272 10 In 1956 it was reported that the emission was due to an expanding atmosphere rather than the circumstellar discs of less evolved Be stars 11 In 1972 it was discovered to have an infrared excess an unusually high emission at infrared wavelengths due to surrounding warm dust 12 In 1961 HD 316285 was catalogued as planetary nebula Bl3 11 13 although that classification was quickly cast into doubt 14 15 Variability edit nbsp A visual band light curve for V4375 Sagittarii plotted from INTEGRAL Optical Monitoring Camera data 16 HD 316285 is listed in the General Catalogue of Variable Stars as a variable Be star with a range of about one tenth of a magnitude 17 The International Variable Star Index classifies it as an S Doradus variable 18 and it is considered to be a candidate luminous blue variable 4 Properties editThe spectrum shows that HD 316285 has only 1 5 times as much hydrogen as helium and elevated levels of carbon nitrogen and oxygen so it can be identified as a highly evolved star It has been calculated to be losing mass at the rate of M every four thousand years via its stellar wind 5 Gaia astrometry suggests a distance much larger than the accepted 1 9kpc 19 1 and would imply a much higher luminosity It may even lie close to the Galactic Center 20 HD 316285 has been identified as a possible type II b or type IIn supernova candidate in modelling of the fate of stars 20 to 25 times the mass of the Sun It has been shown that these supernovae may explode directly from stars in an LBV phase after spending time as a red supergiant 21 A possible companion has been reported on the basis of a helical outflow of material apparently originating from HD 316285 This would be caused by a jet being twisted into a spiral shape by orbital motion 22 References edit a b c d e f Brown A G A et al Gaia collaboration 2021 Gaia Early Data Release 3 Summary of the contents and survey properties Astronomy amp Astrophysics 649 A1 arXiv 2012 01533 Bibcode 2021A amp A 649A 1G doi 10 1051 0004 6361 202039657 S2CID 227254300 Erratum doi 10 1051 0004 6361 202039657e Gaia EDR3 record for this source at VizieR a b c Ducati J R 2002 VizieR Online Data Catalog Catalogue of Stellar Photometry in Johnson s 11 color system CDS ADC Collection of Electronic Catalogues 2237 0 Bibcode 2002yCat 2237 0D Lopes D F Damineli Neto A De Freitas Pacheco J A 1992 A spectroscopic study of luminous peculiar B type stars Astronomy and Astrophysics 261 482 Bibcode 1992A amp A 261 482L a b c Naze Y Rauw G Hutsemekers D 2012 The first X ray survey of Galactic luminous blue variables Astronomy amp Astrophysics 538 A47 arXiv 1111 6375 Bibcode 2012A amp A 538A 47N doi 10 1051 0004 6361 201118040 S2CID 43688343 a b c Hillier D J Crowther P A Najarro F Fullerton A W 1998 An optical and near IR spectroscopic study of the extreme P Cygni type supergiant HDE 316285 Astronomy amp Astrophysics 340 483 96 Bibcode 1998A amp A 340 483H a b c Anders F Khalatyan A Queiroz A B A Chiappini C Ardevol J Casamiquela L Figueras F Jimenez Arranz O Jordi C Monguio M Romero Gomez M Altamirano D Antoja T Assaad R Cantat Gaudin T Castro Ginard A Enke H Girardi L Guiglion G Khan S Luri X Miglio A Minchev I Ramos P Santiago B X Steinmetz M 2022 VizieR Online Data Catalog StarHorse2 Gaia EDR3 photo astrometric distances Anders 2022 Vizier Online Data Catalog Bibcode 2022yCat 1354 0A a b van Genderen A M 2001 S Doradus variables in the Galaxy and the Magellanic Clouds Astronomy amp Astrophysics 366 2 508 31 Bibcode 2001A amp A 366 508V doi 10 1051 0004 6361 20000022 Merrill P W 1925 Two stellar spectra of the P Cygni type Astrophysical Journal 61 418 Bibcode 1925ApJ 61 418M doi 10 1086 142900 Merrill P W Humason M L Burwell C G 1925 Discovery and Observations of Stars of Class Be Astrophysical Journal 61 389 Bibcode 1925ApJ 61 389M doi 10 1086 142899 Merrill Paul W Burwell Cora G 1933 Catalogue and Bibliography of Stars of Classes B and a whose Spectra have Bright Hydrogen Lines Astrophysical Journal 78 87 Bibcode 1933ApJ 78 87M doi 10 1086 143490 Merrill Paul W 1956 Stars with expanding atmospheres Vistas in Astronomy 2 1 1375 1380 Bibcode 1956VA 2 1375M doi 10 1016 0083 6656 56 90065 4 Kleinmann S Kuhi L V 1972 Mass Loss and Infrared Excesses in Hot Stars Publications of the Astronomical Society of the Pacific 84 502 766 Bibcode 1972PASP 84 766K doi 10 1086 129377 Blanco V M 1961 A catalogue of Half emission objects in the galactic center region Contr From the Bosscha Observ Lembang 13 1 Bibcode 1961CoBos 13 1B Vorontsov Veliaminov B A Kostiakova E B Dokuchaeva O D Arkhipova V P 1975 Planetary nebulae near the galactic center Soviet Astronomy 19 163 Bibcode 1975SvA 19 163V Frew D J Bojicic I S Parker Q A 2013 A catalogue of integrated Halpha fluxes for 1258 Galactic planetary nebulae Monthly Notices of the Royal Astronomical Society 431 1 2 26 arXiv 1211 2505 Bibcode 2013MNRAS 431 2F doi 10 1093 mnras sts393 S2CID 119174103 OMC Archive OMC Archive The Astronomical Data Centre at CAB Retrieved 19 December 2021 Samus N N Durlevich O V et al 2009 VizieR Online Data Catalog General Catalogue of Variable Stars Samus 2007 2013 VizieR On line Data Catalog B GCVS Originally Published in 2009yCat 102025S 1 Bibcode 2009yCat 102025S Watson C L 2006 The International Variable Star Index VSX The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science Held May 23 25 25 47 Bibcode 2006SASS 25 47W Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR Smith Nathan Aghakhanloo Mojgan Murphy Jeremiah W Drout Maria R Stassun Keivan G Groh Jose H 2019 09 01 On the Gaia DR2 distances for Galactic luminous blue variables Monthly Notices of the Royal Astronomical Society 488 2 1760 1778 arXiv 1805 03298 Bibcode 2019MNRAS 488 1760S doi 10 1093 mnras stz1712 ISSN 0035 8711 Groh J H Meynet G Ekstrom S 2013 Massive star evolution luminous blue variables as unexpected supernova progenitors Astronomy amp Astrophysics 550 4 arXiv 1301 1519 Bibcode 2013A amp A 550L 7G doi 10 1051 0004 6361 201220741 S2CID 119227339 L7 Lau R M Hankins M J Herter T L Morris M R Mills E A C Ressler M E 2016 An Apparent Precessing Helical Outflow from a Massive Evolved Star Evidence for Binary Interaction The Astrophysical Journal 818 2 117 arXiv 1512 07639 Bibcode 2016ApJ 818 117L doi 10 3847 0004 637X 818 2 117 S2CID 118391443 Retrieved from https en wikipedia org w index php title HD 316285 amp oldid 1187380487, wikipedia, wiki, book, books, library,

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