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Omega2 Aquilae

October 21, 2023

For other star systems with this Bayer designation, see ω Aquilae.

Omega2 Aquilae, Latinized from ω2 Aquilae, is the Bayer designation for a star in the equatorial constellation of Aquila, the eagle.[10] It has an apparent visual magnitude of 6.0,[2] which is close to the lower limit of detectability with the naked eye. According to the Bortle Dark-Sky Scale, this star can be viewed from dark rural skies. As the Earth orbits about the Sun, this star undergoes a parallax shift of 11.7 mas.[1] This is equivalent to a physical distance of 279 light-years (86 parsecs) from Earth, give or take a 2 light year margin of error. The star is drifting closer to the Sun with a radial velocity of −26 km/s.[2]

ω2 Aquilae
Location of ω2 Aquilae (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aquila
Right ascension 19h 19m 53.06713s[1]
Declination +11° 32′ 05.8722″[1]
Apparent magnitude (V) 6.03[2]
Characteristics
Spectral type A2 V[3] or F0V[2]
U−B color index +0.087±0.007[2]
B−V color index +0.08[4]
Astrometry
Radial velocity (Rv)−26.0±4.3[5][2] km/s
Proper motion (μ) RA: 44.042[1] mas/yr
Dec.: 22.393[1] mas/yr
Parallax (π)11.7035 ± 0.0703 mas[1]
Distance279 ± 2 ly
(85.4 ± 0.5 pc)
Absolute magnitude (MV)1.48[2]
Details
Mass2.01[6] M☉
Radius2.0[7] R☉
Luminosity22[2] L☉
Temperature8,936[8] K
Rotational velocity (v sin i)154[9] km/s
Age224[6] Myr
Other designations
ω2 Aql, 29 Aquilae, BD+11°3802, GC 26660, HD 181383, HIP 95002, HR 7332, SAO 104728[10]
Database references
SIMBADdata

Analysis of the spectrum of this white-hued star shows it to match a stellar classification of A2 V,[3] indicating it is an A-type main sequence star. It has about double the size and mass of the Sun.[7] The star is radiating 22[2] times the luminosity of the Sun from its photosphere at an effective temperature of 8,936 K,[8] giving it the white hue of an A-type star.[11] Omega2 Aquilae is 224[6] million years old and is spinning rapidly with a projected rotational velocity of 154 km/s.[9]

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 e f g h i 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.
  3. ^ a b Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
  4. ^ Osawa, K.; Hata, S. (1962), "Three-color photometry of B8-A2 stars (II).", Annals of the Tokyo Astronomical Observatory, 7: 209, Bibcode:1962AnTok...7..209O.
  5. ^ Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, vol. 30, University of Toronto: International Astronomical Union, p. 57, Bibcode:1967IAUS...30...57E.
  6. ^ a b c 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.
  7. ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
  8. ^ a b Soubiran, C.; Le Campion, J.-F.; Cayrel de Strobel, G.; Caillo, A. (June 2010), "The PASTEL catalogue of stellar parameters", Astronomy and Astrophysics, 515: A111, arXiv:1004.1069, Bibcode:2010A&A...515A.111S, doi:10.1051/0004-6361/201014247, S2CID 118362423.
  9. ^ 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.
  10. ^ a b "ome02 Aql". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-07-21.
  11. ^ , Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 18, 2012, retrieved 2012-01-16.

External links Edit

  • Image Omega-2 Aquilae
  • HR 7332

October 21, 2023
omega2, aquilae, other, star, systems, with, this, bayer, designation, aquilae, latinized, from, aquilae, bayer, designation, star, equatorial, constellation, aquila, eagle, apparent, visual, magnitude, which, close, lower, limit, detectability, with, naked, a. For other star systems with this Bayer designation see w Aquilae Omega2 Aquilae Latinized from w2 Aquilae is the Bayer designation for a star in the equatorial constellation of Aquila the eagle 10 It has an apparent visual magnitude of 6 0 2 which is close to the lower limit of detectability with the naked eye According to the Bortle Dark Sky Scale this star can be viewed from dark rural skies As the Earth orbits about the Sun this star undergoes a parallax shift of 11 7 mas 1 This is equivalent to a physical distance of 279 light years 86 parsecs from Earth give or take a 2 light year margin of error The star is drifting closer to the Sun with a radial velocity of 26 km s 2 w2 AquilaeLocation of w2 Aquilae circled Observation dataEpoch J2000 0 Equinox J2000 0 ICRS Constellation AquilaRight ascension 19h 19m 53 06713s 1 Declination 11 32 05 8722 1 Apparent magnitude V 6 03 2 CharacteristicsSpectral type A2 V 3 or F0V 2 U B color index 0 087 0 007 2 B V color index 0 08 4 AstrometryRadial velocity Rv 26 0 4 3 5 2 km sProper motion m RA 44 042 1 mas yr Dec 22 393 1 mas yrParallax p 11 7035 0 0703 mas 1 Distance279 2 ly 85 4 0 5 pc Absolute magnitude MV 1 48 2 DetailsMass2 01 6 M Radius2 0 7 R Luminosity22 2 L Temperature8 936 8 KRotational velocity v sin i 154 9 km sAge224 6 MyrOther designationsw2 Aql 29 Aquilae BD 11 3802 GC 26660 HD 181383 HIP 95002 HR 7332 SAO 104728 10 Database referencesSIMBADdataAnalysis of the spectrum of this white hued star shows it to match a stellar classification of A2 V 3 indicating it is an A type main sequence star It has about double the size and mass of the Sun 7 The star is radiating 22 2 times the luminosity of the Sun from its photosphere at an effective temperature of 8 936 K 8 giving it the white hue of an A type star 11 Omega2 Aquilae is 224 6 million years old and is spinning rapidly with a projected rotational velocity of 154 km s 9 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 e f g h i 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 Cowley A et al April 1969 A study of the bright A stars I A catalogue of spectral classifications Astronomical Journal 74 375 406 Bibcode 1969AJ 74 375C doi 10 1086 110819 Osawa K Hata S 1962 Three color photometry of B8 A2 stars II Annals of the Tokyo Astronomical Observatory 7 209 Bibcode 1962AnTok 7 209O Evans D S June 20 24 1966 The Revision of the General Catalogue of Radial Velocities in Batten Alan Henry Heard John Frederick eds Determination of Radial Velocities and their Applications Proceedings from IAU Symposium no 30 vol 30 University of Toronto International Astronomical Union p 57 Bibcode 1967IAUS 30 57E a b c 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 a b Pasinetti Fracassini L E et al February 2001 Catalogue of Apparent Diameters and Absolute Radii of Stars CADARS Third edition Comments and statistics Astronomy and Astrophysics 367 2 521 524 arXiv astro ph 0012289 Bibcode 2001A amp A 367 521P doi 10 1051 0004 6361 20000451 S2CID 425754 a b Soubiran C Le Campion J F Cayrel de Strobel G Caillo A June 2010 The PASTEL catalogue of stellar parameters Astronomy and Astrophysics 515 A111 arXiv 1004 1069 Bibcode 2010A amp A 515A 111S doi 10 1051 0004 6361 201014247 S2CID 118362423 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 ome02 Aql SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2012 07 21 The Colour of Stars Australia Telescope Outreach and Education Commonwealth Scientific and Industrial Research Organisation December 21 2004 archived from the original on March 18 2012 retrieved 2012 01 16 External links EditImage Omega 2 Aquilae HR 7332 Retrieved from https en wikipedia org w index php title Omega2 Aquilae amp oldid 1094204400, wikipedia, wiki, book, books, library,

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