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HD 90132
Antlia constellation map.svg
Red circle.svg
Location of HD 90132 in red
Observation data
Epoch J2000.0       Equinox J2000.0 ( ICRS)
Constellation Antlia
Right ascension 10h 23m 29.29608s [1]
Declination −38° 00′ 35.4255″ [1]
Apparent magnitude (V) 5.33±0.01 [2]
Characteristics
Spectral type A8 V [3]
B−V color index +0.25 [4]
Astrometry
Radial velocity (Rv)17±4.2 [5] km/s
Proper motion (μ) RA: −158.833  mas/ yr [1]
Dec.: −53.705  mas/ yr [1]
Parallax (π)24.2034 ± 0.0725  mas [1]
Distance134.8 ± 0.4  ly
(41.3 ± 0.1  pc)
Absolute magnitude (MV)+2.25 [6]
Details
Mass1.69±0.27 [7]  M☉
Radius1.87±0.87 [7]  R☉
Luminosity9.79±0.06 [8]  L☉
Surface gravity (log g)4.15 [9]  cgs
Temperature7,737±263 [9]  K
Metallicity [Fe/H]−0.13 [10]  dex
Rotational velocity (v sin i)270 [11] km/s
Age70 [12]  Myr
Other designations
64 G. Antliae [13], CD−37°6509, CPD−37°4123, FK5 1269, GC 14281, HD 90132, HIP 50888, HR 4086, SAO 201346 [14]
Database references
SIMBAD data

HD 90132 (HR 4086) is a solitary [15] white hued star located in the southern constellation Antlia. It has an apparent magnitude of 5.33, [2] making it one of the brighter members of this generally faint constellation. The star is relatively close at a distance of 135 light years [1] but is receding with a heliocentric radial velocity of 17  km/s. [5]

HD 90132 has a stellar classification of A8 V, [3] indicating that it is an ordinary A-type main-sequence star. At present it has 1.69 times the mass of the Sun and 1.87 times the radius of the Sun. [7] Despite a young age of 70 million years, [12] the star has a lower surface gravity than expected. [9] This is due to the equator being 18% larger than the poles, [16] which is due to a high projected rotational velocity of 270  km/s. [11] Nevertheless, it shines with a luminosity of 9.8  L☉ [8] from its photosphere at an effective temperature of 7,737  K. [9] HD 90132 is slightly metal deficient with a metallicity 74% that of Sun. [10]

This star was observed for infrared excess suggesting the presence of a circumstellar disk, but as of 2017 no excess have been found. [17]

References

  1. ^ a b c d e 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 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H. ISSN  0004-6361.
  3. ^ a b Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations −40° to −26°. Bibcode: 1982mcts.book.....H.
  4. ^ Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode: 1966CoLPL...4...99J.
  5. ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053. Bibcode: 2006AstL...32..759G. doi: 10.1134/S1063773706110065. eISSN  1562-6873. ISSN  1063-7737. S2CID  119231169.
  6. ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN  1562-6873. ISSN  1063-7737. S2CID  255204555.
  7. ^ a b c Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694. Bibcode: 2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467. ISSN  0004-6256.
  8. ^ a b 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.
  9. ^ a b c d David, Trevor J.; Hillenbrand, Lynne A. (12 May 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. eISSN  1538-4357.
  10. ^ a b Netopil, Martin (4 May 2017). "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system". Monthly Notices of the Royal Astronomical Society. 469 (3): 3042–3055. arXiv: 1705.00883. Bibcode: 2017MNRAS.469.3042N. doi: 10.1093/mnras/stx1077. eISSN  1365-2966. ISSN  0035-8711.
  11. ^ a b Huang, Su-Shu (September 1953). "A Statistical Study of the Rotation of the Stars". The Astrophysical Journal. 118: 285. Bibcode: 1953ApJ...118..285H. doi: 10.1086/145751. eISSN  1538-4357. ISSN  0004-637X.
  12. ^ a b Vican, Laura (2 May 2012). "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey". The Astronomical Journal. 143 (6): 135. arXiv: 1203.1966. Bibcode: 2012AJ....143..135V. doi: 10.1088/0004-6256/143/6/135. eISSN  1538-3881. ISSN  0004-6256.
  13. ^ Gould, Benjamin Apthorp (January 1879). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode: 1879RNAO....1.....G.
  14. ^ "HD 90132". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 September 2015.
  15. ^ Eggleton, P. P.; Tokovinin, A. A. (11 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. eISSN  1365-2966. ISSN  0035-8711.
  16. ^ van Belle, Gerard T. (14 March 2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review. 20 (1): 51. arXiv: 1204.2572. Bibcode: 2012A&ARv..20...51V. doi: 10.1007/s00159-012-0051-2. eISSN  1432-0754. ISSN  0935-4956.
  17. ^ Meshkat, Tiffany; Mawet, Dimitri; Bryan, Marta L.; Hinkley, Sasha; Bowler, Brendan P.; Stapelfeldt, Karl R.; Batygin, Konstantin; Padgett, Deborah; Morales, Farisa Y.; Serabyn, Eugene; Christiaens, Valentin; Brandt, Timothy D.; Wahhaj, Zahed (21 November 2017). "A Direct Imaging Survey ofSpitzer-detected Debris Disks: Occurrence of Giant Planets in Dusty Systems". The Astronomical Journal. 154 (6): 245. arXiv: 1710.04185. Bibcode: 2017AJ....154..245M. doi: 10.3847/1538-3881/aa8e9a. eISSN  1538-3881.
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