HAT-P-41

HAT-P-41
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 49m 17.4400s[1]
Declination 04° 40′ 20.7836″[1]
Apparent magnitude (V) 11.36
Characteristics
HAT-P-41
Evolutionary stage main-sequence star
Spectral type F9V[2]
HAT-P-41B
Spectral type K9-M0[2]
Astrometry
Radial velocity (Rv)33.2±0.5[3] km/s
Proper motion (μ) RA: −3.177[3] mas/yr
Dec.: −6.570[3] mas/yr
Parallax (π)2.8477 ± 0.0176 mas[3]
Distance1,145 ± 7 ly
(351 ± 2 pc)
Position (relative to HAT-P-41)[2]
ComponentHAT-P-41B
Epoch of observation2013
Angular distance3.619±0.005″
Position angle184.1±0.2°
Projected separation1270 AU
Details[4]
Mass1.418±0.047 M☉
Radius1.683+0.058
−0.036 R☉
Temperature6390±100 K
Metallicity [Fe/H]0.21±0.10 dex
Rotational velocity (v sin i)19.60±0.50 km/s
Age2.2±0.4 Gyr
Other designations
TYC 488-2442-1, GSC 00488-02442, 2MASS J19491743+0440207[1]
HAT-P-41: Gaia DR2 4290415081653653632, Gaia EDR3 4290415081653653632
HAT-P-41B: Gaia DR2 4290415081653653376, Gaia EDR3 4290415081653653376
Database references
SIMBADdata
Hat-P-41b

HAT-P-41 is a binary star system. Its primary is a F-type main-sequence star. Its surface temperature is 6390±100 K.[4] compared to the Sun, HAT-P-41 is enriched in heavy elements, with a metallicity Fe/H index of 0.21±0.10, but is much younger at an age of 2.2±0.4 billion years.[4]

The candidate stellar companion was detected simultaneously with the planet discovery in 2012.[5] A multiplicity survey in 2015 did confirm a dim stellar companion of later-K to early-M spectral class, with the probability of being a background star of 14%.[2] By 2020, it was concluded the candidate companion star is probably gravitationally bound.[6]

  1. ^ a b c "HAT-P-41". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-01-21.
  2. ^ a b c d Wöllert, Maria; Brandner, Wolfgang; Bergfors, Carolina; Henning, Thomas (2015), "A Lucky Imaging search for stellar companions to transiting planet host stars", Astronomy & Astrophysics, 575: A23, arXiv:1507.01938, Bibcode:2015A&A...575A..23W, doi:10.1051/0004-6361/201424091, S2CID 119250579
  3. ^ a b c d 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.
  4. ^ a b c Bonomo, A. S.; Desidera, S.; Benatti, S.; Borsa, F.; Crespi, S.; Damasso, M.; Lanza, A. F.; Sozzetti, A.; Lodato, G.; Marzari, F.; Boccato, C.; Claudi, R. U.; Cosentino, R.; Covino, E.; Gratton, R.; Maggio, A.; Micela, G.; Molinari, E.; Pagano, I.; Piotto, G.; Poretti, E.; Smareglia, R.; Affer, L.; Biazzo, K.; Bignamini, A.; Esposito, M.; Giacobbe, P.; Hébrard, G.; Malavolta, L.; et al. (2017), "The GAPS Programme with HARPS-N at TNG", Astronomy & Astrophysics, 602: A107, arXiv:1704.00373, Bibcode:2017A&A...602A.107B, doi:10.1051/0004-6361/201629882, S2CID 118923163
  5. ^ Cite error: The named reference Hartman2012 was invoked but never defined (see the help page).
  6. ^ Bohn, A. J.; Southworth, J.; Ginski, C.; Kenworthy, M. A.; Maxted, P. F. L.; Evans, D. F. (2020), "A multiplicity study of transiting exoplanet host stars", Astronomy & Astrophysics, 635: A73, arXiv:2001.08224, Bibcode:2020A&A...635A..73B, doi:10.1051/0004-6361/201937127, S2CID 210861118