HATS-3
HATS-3 is a F-type main-sequence star. Its surface temperature is 6351±76 K. HATS-3 is relatively depleted in its concentration of heavy elements, with a metallicity Fe/H index of −0.157±0.07, but is slightly younger than the Sun at an age of 3.2+0.6
−0.4 billion years.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 20h 49m 49.7853s[1] |
| Declination | −24° 25′ 43.5398″[1] |
| Apparent magnitude (V) | 12.43 |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | F[2] |
| Astrometry | |
| Proper motion (μ) | RA: 10.393[3] mas/yr Dec.: 15.478[3] mas/yr |
| Parallax (π) | 2.3594 ± 0.0171 mas[3] |
| Distance | 1,380 ± 10 ly (424 ± 3 pc) |
| Details[4] | |
| Mass | 1.209±0.036[5] M☉ |
| Radius | 1.404±0.030[5] R☉ |
| Surface gravity (log g) | 4.22±0.01 cgs |
| Temperature | 6351±76 K |
| Metallicity [Fe/H] | -0.16 dex |
| Rotational velocity (v sin i) | 9.12±1.31 km/s |
| Age | 3.2+0.6 −0.4[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
A multiplicity survey in 2016 detected a candidate stellar companion to HATS-3, 3.671±0.016 arc-seconds away.[6]
Planetary system
In 2013, one planet, named HATS-3b, was discovered on a tight, nearly circular orbit.[2] The planetary orbit of HATS-3b is likely aligned with the equatorial plane of the star, at a misalignment angle of 3±25°.[5] Planetary equilibrium temperature is 1643 K.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.55±0.23[4] MJ | 0.0485+0.0004 −0.0006 |
3.547851±0.000005 | 0 | 86.2±0.3° | 0.99±0.19[4] RJ |
References
- "HATS-3". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-09.
- Bayliss, D.; Zhou, G.; Penev, K.; Bakos, G. Á.; Hartman, J. D.; Jordán, A.; Mancini, L.; Mohler-Fischer, M.; Suc, V.; Rabus, M.; Béky, B.; Csubry, Z.; Buchhave, L.; Henning, T.; Nikolov, N.; Csák, B.; Brahm, R.; Espinoza, N.; Noyes, R. W.; Schmidt, B.; Conroy, P.; Wright, D. J.; Tinney, C. G.; Addison, B. C.; Sackett, P. D.; Sasselov, D. D.; Lázár, J.; Papp, I.; Sári, P. (2013), "HATS-3b: AN INFLATED HOT JUPITER TRANSITING AN F-TYPE STAR", The Astronomical Journal, 146 (5): 113, arXiv:1306.0624, Bibcode:2013AJ....146..113B, doi:10.1088/0004-6256/146/5/113, S2CID 119194040
- 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.
- Stassun, Keivan G.; Collins, Karen A.; Gaudi, B. Scott (2017), "Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes", The Astronomical Journal, 153 (3): 136, arXiv:1609.04389, Bibcode:2017AJ....153..136S, doi:10.3847/1538-3881/aa5df3, S2CID 119219062
- Addison, B. C.; Tinney, C. G.; Wright, D. J.; Bayliss, D. (2014), "A SPIN-ORBIT ALIGNMENT FOR THE HOT JUPITER HATS-3b", The Astrophysical Journal, 792 (2): 112, arXiv:1407.7710, Bibcode:2014ApJ...792..112A, doi:10.1088/0004-637X/792/2/112, S2CID 118352072
- Evans, D. F.; Southworth, J.; Maxted, P. F. L.; Skottfelt, J.; Hundertmark, M.; Jørgensen, U. G.; Dominik, M.; Alsubai, K. A.; Andersen, M. I.; Bozza, V.; Bramich, D. M.; Burgdorf, M. J.; Ciceri, S.; d'Ago, G.; Figuera Jaimes, R.; Gu, S.-H.; Haugbølle, T.; Hinse, T. C.; Juncher, D.; Kains, N.; Kerins, E.; Korhonen, H.; Kuffmeier, M.; Mancini, L.; Peixinho, N.; Popovas, A.; Rabus, M.; Rahvar, S.; Schmidt, R. W.; et al. (2016), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP)", Astronomy & Astrophysics, 589: A58, arXiv:1603.03274, doi:10.1051/0004-6361/201527970, S2CID 14215845
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