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Omega Aurigae

January 01, 1970

"HR 1592" redirects here. For the legislation, see Matthew Shepard Act.

Omega Aurigae, Latinized from ω Aurigae, is the Bayer designation for a double star[11] in the northern constellation of Auriga. Its apparent magnitude is 4.95,[2] which is bright enough to be seen with the naked eye. The distance to this system, as determined using parallax measurements, is approximately 162 light-years (50 parsecs).[1] The system is a member of the Columba group of co-moving stars.[12]

Omega Aurigae
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 04h 59m 15.41038s[1]
Declination +37° 53′ 24.8854″[1]
Apparent magnitude (V) 4.95[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type A1 V[4]
U−B color index +0.01[2]
B−V color index +0.05[2]
R−I color index 0.03
Astrometry
Radial velocity (Rv)+5[5] km/s
Proper motion (μ) RA: +44.531[1] mas/yr
Dec.: −97.943[1] mas/yr
Parallax (π)20.1236 ± 0.2385 mas[1]
Distance162 ± 2 ly
(49.7 ± 0.6 pc)
Absolute magnitude (MV)+1.34[6]
Details
Mass2.29±0.04[3] M☉
Radius2.0[7] R☉
Luminosity27[6] L☉
Surface gravity (log g)4.33[4] cgs
Temperature9,230[4] K
Metallicity [Fe/H]–0.12[4] dex
Rotational velocity (v sin i)107[8] km/s
Age317[9] Myr
Other designations
ω Aur, 4 Aur, BD+37°1005, HD 31647, HIP 23179, HR 1592, SAO 57548, WDS J04593+3753AB[10]
Database references
SIMBADdata

This is an A-type main sequence star with a stellar classification of A1 V.[4] It is 317[9] million years old with a high rate of spin, showing a projected rotational velocity of 107 km/s.[8] The star has 2.3[3] times the mass of the Sun and double[7] the Sun's radius. It is radiating 27[6] times the Sun's luminosity from its photosphere at an effective temperature of 9,230 K.[4] The object displays an infrared excess, suggesting an orbiting debris disk with a temperature of 20 K at a mean radius of 932.40 AU from the host star.[7] It has a magnitude 8.18 companion at an angular separation of 4.99 arcseconds.[11] The system is an X-ray source with a luminosity of 16.57×1029 ergs s−1.[13]

References edit

  1. ^ a b c d e f 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.
  2. ^ a b c d Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99): 99, Bibcode:1966CoLPL...4...99J.
  3. ^ a b c Zorec, J.; Royer, F. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
  4. ^ a b c d e f Hill, G. M. (February 1995), "Compositional differences among the A-type stars. 2: Spectrum synthesis up to V sin i = 110 km/s", Astronomy and Astrophysics, 294 (2): 536–546, Bibcode:1995A&A...294..536H.
  5. ^ Wilson, Ralph Elmer (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Washington: Carnegie Institution of Washington, Bibcode:1953GCRV..C......0W.
  6. ^ a b c Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
  7. ^ a b c Cotten, Tara H.; Song, Inseok (July 2016), "A Comprehensive Census of Nearby Infrared Excess Stars", The Astrophysical Journal Supplement Series, 225 (1): 24, arXiv:1606.01134, Bibcode:2016ApJS..225...15C, doi:10.3847/0067-0049/225/1/15, S2CID 118438871, 15.
  8. ^ a b Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics, 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224, S2CID 18475298.
  9. ^ a b David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
  10. ^ "* ome Aur". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-08-24.
  11. ^ a b Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
  12. ^ Elliott, P.; et al. (May 2016), "Search for associations containing young stars (SACY). VII. New stellar and substellar candidate members in the young associations", Astronomy & Astrophysics, 590: 28, arXiv:1604.03550, Bibcode:2016A&A...590A..13E, doi:10.1051/0004-6361/201628253, S2CID 53138126, A13.
  13. ^ Makarov, Valeri V. (October 2003), "The 100 Brightest X-Ray Stars within 50 Parsecs of the Sun", The Astronomical Journal, 126 (4): 1996–2008, Bibcode:2003AJ....126.1996M, doi:10.1086/378164.

External links edit

  • HR 1592
  • Image Omega Aurigae
  • CCDM J04593+3753

January 01, 1970
omega, aurigae, 1592, redirects, here, legislation, matthew, shepard, latinized, from, aurigae, bayer, designation, double, star, northern, constellation, auriga, apparent, magnitude, which, bright, enough, seen, with, naked, distance, this, system, determined. HR 1592 redirects here For the legislation see Matthew Shepard Act Omega Aurigae Latinized from w Aurigae is the Bayer designation for a double star 11 in the northern constellation of Auriga Its apparent magnitude is 4 95 2 which is bright enough to be seen with the naked eye The distance to this system as determined using parallax measurements is approximately 162 light years 50 parsecs 1 The system is a member of the Columba group of co moving stars 12 Omega Aurigae Observation dataEpoch J2000 Equinox J2000 Constellation Auriga Right ascension 04h 59m 15 41038s 1 Declination 37 53 24 8854 1 Apparent magnitude V 4 95 2 Characteristics Evolutionary stage main sequence 3 Spectral type A1 V 4 U B color index 0 01 2 B V color index 0 05 2 R I color index 0 03 AstrometryRadial velocity Rv 5 5 km sProper motion m RA 44 531 1 mas yr Dec 97 943 1 mas yrParallax p 20 1236 0 2385 mas 1 Distance162 2 ly 49 7 0 6 pc Absolute magnitude MV 1 34 6 DetailsMass2 29 0 04 3 M Radius2 0 7 R Luminosity27 6 L Surface gravity log g 4 33 4 cgsTemperature9 230 4 KMetallicity Fe H 0 12 4 dexRotational velocity v sin i 107 8 km sAge317 9 Myr Other designationsw Aur 4 Aur BD 37 1005 HD 31647 HIP 23179 HR 1592 SAO 57548 WDS J04593 3753AB 10 Database referencesSIMBADdata This is an A type main sequence star with a stellar classification of A1 V 4 It is 317 9 million years old with a high rate of spin showing a projected rotational velocity of 107 km s 8 The star has 2 3 3 times the mass of the Sun and double 7 the Sun s radius It is radiating 27 6 times the Sun s luminosity from its photosphere at an effective temperature of 9 230 K 4 The object displays an infrared excess suggesting an orbiting debris disk with a temperature of 20 K at a mean radius of 932 40 AU from the host star 7 It has a magnitude 8 18 companion at an angular separation of 4 99 arcseconds 11 The system is an X ray source with a luminosity of 16 57 1029 ergs s 1 13 References edit a b c d e f 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 a b c d Johnson H L et al 1966 UBVRIJKL photometry of the bright stars Communications of the Lunar and Planetary Laboratory 4 99 99 Bibcode 1966CoLPL 4 99J a b c Zorec J Royer F 2012 Rotational velocities of A type stars IV Evolution of rotational velocities Astronomy amp Astrophysics 537 A120 arXiv 1201 2052 Bibcode 2012A amp A 537A 120Z doi 10 1051 0004 6361 201117691 S2CID 55586789 a b c d e f Hill G M February 1995 Compositional differences among the A type stars 2 Spectrum synthesis up to V sin i 110 km s Astronomy and Astrophysics 294 2 536 546 Bibcode 1995A amp A 294 536H Wilson Ralph Elmer 1953 General Catalogue of Stellar Radial Velocities Carnegie Institute Washington D C Publication Washington Carnegie Institution of Washington Bibcode 1953GCRV C 0W a b c Anderson E Francis Ch 2012 XHIP An extended hipparcos compilation Astronomy Letters 38 5 331 arXiv 1108 4971 Bibcode 2012AstL 38 331A doi 10 1134 S1063773712050015 S2CID 119257644 a b c Cotten Tara H Song Inseok July 2016 A Comprehensive Census of Nearby Infrared Excess Stars The Astrophysical Journal Supplement Series 225 1 24 arXiv 1606 01134 Bibcode 2016ApJS 225 15C doi 10 3847 0067 0049 225 1 15 S2CID 118438871 15 a b Royer F Zorec J Gomez A E February 2007 Rotational velocities of A type stars III Velocity distributions Astronomy and Astrophysics 463 2 671 682 arXiv astro ph 0610785 Bibcode 2007A amp A 463 671R doi 10 1051 0004 6361 20065224 S2CID 18475298 a b David Trevor J Hillenbrand Lynne A 2015 The Ages of Early Type Stars Stromgren Photometric Methods Calibrated Validated Tested and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets The Astrophysical Journal 804 2 146 arXiv 1501 03154 Bibcode 2015ApJ 804 146D doi 10 1088 0004 637X 804 2 146 S2CID 33401607 ome Aur SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2012 08 24 a b Eggleton P P Tokovinin A A September 2008 A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 389 2 869 879 arXiv 0806 2878 Bibcode 2008MNRAS 389 869E doi 10 1111 j 1365 2966 2008 13596 x S2CID 14878976 Elliott P et al May 2016 Search for associations containing young stars SACY VII New stellar and substellar candidate members in the young associations Astronomy amp Astrophysics 590 28 arXiv 1604 03550 Bibcode 2016A amp A 590A 13E doi 10 1051 0004 6361 201628253 S2CID 53138126 A13 Makarov Valeri V October 2003 The 100 Brightest X Ray Stars within 50 Parsecs of the Sun The Astronomical Journal 126 4 1996 2008 Bibcode 2003AJ 126 1996M doi 10 1086 378164 External links editHR 1592 Image Omega Aurigae CCDM J04593 3753 Retrieved from https en wikipedia org w index php title Omega Aurigae amp oldid 1187422014, wikipedia, 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