HAT-P-24

HAT-P-24 is an F8 dwarf star about 400 parsecs away.[2] A planet was discovered with the transit method by the HATNet Project in 2010. HAT-P-24b, is a typical hot Jupiter orbiting in only 3 days.[4]

HAT-P-24
Observation data
Epoch J2000      Equinox J2000
Constellation Gemini[1]
Right ascension 07h 15m 18.0149s[2]
Declination +14° 15′ 45.475″[2]
Apparent magnitude (V) 11.754[3]
Characteristics
Spectral type F8[4]
Astrometry
Proper motion (μ) RA: 7.6±1.7[5] mas/yr
Dec.: −4.3±1.4[5] mas/yr
Parallax (π)2.48 ± 0.39[2] mas
Distanceapprox. 1,300 ly
(approx. 400 pc)
Details
Mass1.195 ± 0.012[6] M☉
Radius1.321 ± 0.063[6] R☉
Luminosity2.48 +0.032
−0.028 L☉
Surface gravity (log g)4.27 ± 0.04[7] cgs
Temperature6329 ± 67[7] K
Metallicity [Fe/H]–0.21 ± 0.08[7] dex
Rotational velocity (v sin i)11.4 ± 1.2[7] km/s
Age2.8 ± 0.6 Gyr
Other designations
TYC 774-1441-1, GSC 0774-01441
Database references
SIMBADdata

Planetary system

In 2010 the HATNet Project announced the discovery of a hot jupiter type gas giant extrasolar planet in orbit around this star. Following the designation scheme used by the HATNet Project, the star is designated as HAT-P-24, and the planet itself HAT-P-24b.[4]

The HAT-P-24 planetary system[6][8]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.723+0.031
−0.030 MJ		 0.04651+0.00055
−0.00056		 3.3552479±0.0000062 <0.038 88.217 +0.716
−0.693°		 1.364 ± 0.068 RJ

References
  1. Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
  2. Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. S2CID 1828208.Gaia Data Release 1 catalog entry
  3. Maxted, P. F. L.; et al. (2011). "UBV(RI)C photometry of transiting planet hosting stars". Monthly Notices of the Royal Astronomical Society. 418 (2): 1039–1042. arXiv:1108.0349. Bibcode:2011MNRAS.418.1039M. doi:10.1111/j.1365-2966.2011.19554.x. S2CID 117056033.
  4. Kipping, D. M.; et al. (2011). "HAT-P-24b: An Inflated Hot Jupiter on a 3.36 Day Period Transiting a Hot, Metal-poor Star". The Astrophysical Journal. 725 (2): 2017–2028. arXiv:1008.3389. Bibcode:2010ApJ...725.2017K. doi:10.1088/0004-637X/725/2/2017. S2CID 118519846.
  5. Zacharias, N.; et al. (2013). "The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". The Astronomical Journal. 145 (2). 44. arXiv:1212.6182. Bibcode:2013AJ....145...44Z. doi:10.1088/0004-6256/145/2/44. S2CID 119299381.Vizier catalog entry
  6. Wang, Xiao-Bin; et al. (2013). "The refined physical parameters of transiting exoplanet system HAT-P-24" (PDF). Research in Astronomy and Astrophysics. 13 (5): 593–603. Bibcode:2013RAA....13..593W. doi:10.1088/1674-4527/13/5/010.
  7. 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.
  8. Bonomo, A. S.; et al. (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 and Astrophysics. 602. A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. S2CID 118923163.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.