HAT-P-9

Last updated
HAT-P-9 / Tevel
Observation data
Epoch J2000       Equinox J2000
Constellation Auriga [1]
Right ascension 07h 20m 40.4565s [2]
Declination +37° 08′ 26.343″ [2]
Apparent magnitude  (V)12.34 ± 0.27 [3]
Characteristics
Spectral type F [4]
Apparent magnitude  (B)12.35 ± 0.23 [3]
Apparent magnitude  (V)12.34 ± 0.27 [3]
Apparent magnitude  (J)11.274 ± 0.022 [3]
Apparent magnitude  (H)11.04 ± 0.03 [3]
Apparent magnitude  (K)11.015 ± 0.021 [3]
Variable type planetary transit [4]
Astrometry
Radial velocity (Rv)20.69±2.27 [2] km/s
Proper motion (μ)RA: −9.796 mas/yr [2]
Dec.: −13.029 mas/yr [2]
Parallax (π)2.1626±0.0140  mas [2]
Distance 1,508 ± 10  ly
(462 ± 3  pc)
Details
Mass 1.281+0.057
−0.056 [5]   M☉
Radius 1.338+0.065
−0.060 [5]   R☉
Luminosity 2.62+0.26
−0.23 [5]   L☉
Surface gravity (log g)4.293+0.033
−0.035 [5]   cgs
Temperature 6253 ± 84 [6]   K
Metallicity [Fe/H]0.16 ± 0.09 [6]   dex
Rotational velocity (v sin i)13.4 ± 1.4 [6]  km/s
Age 1.6+1.8
−1.4 [7]   Gyr
Other designations
Tevel, TOI-1731, TIC 371234684, TYC 2463-281-1, GSC 02463-00281, 2MASS J07204044+3708263, HAT-P-9 [3]
Database references
SIMBAD data
Exoplanet Archive data

HAT-P-9 is a magnitude 12 F-type star approximately 1500 light-years away in the constellation Auriga. [3] A search for a binary companion star using adaptive optics at the MMT Observatory was negative. [8]

Contents

Naming

The star HAT-P-9 is named Tevel. The name was selected in the NameExoWorlds campaign by Israel, during the 100th anniversary of the IAU. The Hebrew word תֵבֵל tevel means "World" or "Universe". [9] [10]

Planetary system

An exoplanet orbiting the star, HAT-P-9b, was discovered by the transit method on June 26, 2008. This is a low-density hot Jupiter, orbiting its star in just 3.9 days. [4]

The HAT-P-9 planetary system [5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b / Alef 0.749+0.064
−0.063  MJ 		0.05287±0.000783.92281072(102)0.084+0.052
−0.047		86.44+0.37
−0.36 ° 		1.393+0.067
−0.065  RJ

See also

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 4 5 6 7 8 "SIMBAD query result: TYC 2463-281-1 -- Star". Centre de Données astronomiques de Strasbourg . Retrieved 2009-05-18.
  4. 1 2 3 Shporer, Avi; et al. (2009). "HAT-P-9b: A Low-Density Planet Transiting a Moderately Faint F Star". The Astrophysical Journal. 690 (2): 1393–1400. arXiv: 0806.4008 . Bibcode:2009ApJ...690.1393S. doi:10.1088/0004-637X/690/2/1393. S2CID   930937.
  5. 1 2 3 4 5 Wang, Yong-Hao; Wang, Songhu; et al. (February 2019). "Transiting Exoplanet Monitoring Project (TEMP). V. Transit Follow Up for HAT-P-9b, HAT-P-32b, and HAT-P-36b". The Astronomical Journal . 157 (2): 82. Bibcode:2019AJ....157...82W. doi: 10.3847/1538-3881/aaf6b6 .
  6. 1 2 3 Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal. 757 (2). 161. arXiv: 1208.1268 . Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161. S2CID   16580774.
  7. ↑ Bonomo, A. S.; Desidera, S.; et al. (June 2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics . 602: A107. arXiv: 1704.00373 . Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID   118923163.
  8. ↑ Adams, E. R.; et al. (2013). "Adaptive Optics Images. II. 12 Kepler Objects of Interest and 15 Confirmed Transiting Planets". The Astronomical Journal. 146 (1). 9. arXiv: 1305.6548 . Bibcode:2013AJ....146....9A. doi:10.1088/0004-6256/146/1/9. S2CID   119117620.
  9. ↑ "Approved names". NameExoworlds. Retrieved 2020-01-02.
  10. ↑ "International Astronomical Union | IAU". www.iau.org. Archived from the original on 2022-12-05. Retrieved 2020-01-02.
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