HD 175541 Star in the constellation Serpens
HD 175541 is an 8th magnitude star with an exoplanetary companion in the constellation Serpens . It has the proper name Kaveh , which was selected by Iran during the NameExoWorlds campaign as part of the 100th anniversary of the IAU . Kaveh is one of the heroes of the Shahnameh national epic of Greater Iran .[ 8] [ 9] apparent visual magnitude of 8.02[ 1] light-years from the Sun based on parallax measurements, and is drifting further away with a radial velocity of +20 km/s.[ 2] Gliese Catalogue of Nearby Stars .[ 7]
This is an evolved G-type star with a stellar classification of G6/8IV.[ 4] absolute magnitude of 2.54[ 1] main sequence stars in the Sun's neighborhood, indicating that it is on the subgiant branch . When this intermediate-mass star was on the main-sequence, it was an A-type star .[ 10] [ 5] billion years old and is chromospherically inactive [ 10] projected rotational velocity of 0.5 km/s.[ 6] photosphere at an effective temperature of 5,093 K.[ 5]
In April 2007, a Jovian planet was found orbiting this star using the radial velocity method , from Lick and Keck Observatories in Mount Hamilton (California) and Mauna Kea (Hawai'i) , United States.[ 10]
References
1 2 3 4 5 6 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv :1108.4971 Bibcode :2012AstL...38..331A . doi :10.1134/S1063773712050015 . S2CID 119257644 . 1 2 3 4 5 6 7 8 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 .↑ Ghezzi, L.; Cunha, K.; Schuler, S. C.; Smith, V. V. (2010). "Metallicities of Planet-hosting Stars: A Sample of Giants and Subgiants". The Astrophysical Journal . 725 (1): 721. arXiv :1008.3539 Bibcode :2010ApJ...725..721G . doi :10.1088/0004-637X/725/1/721 . 1 2 Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey . 5 . Bibcode :1999MSS...C05....0H . 1 2 3 4 5 6 7 8 Bonfanti, A.; Ortolani, S.; Nascimbeni, V. (2016). "Age consistency between exoplanet hosts and field stars". Astronomy & Astrophysics . 585 : 14. arXiv :1511.01744 Bibcode :2016A& A...585A...5B . doi :10.1051/0004-6361/201527297 . S2CID 53971692 . A5. 1 2 3 Jofré, E.; Petrucci, R.; Saffe, C.; Saker, L.; Artur de la Villarmois, E.; Chavero, C.; Gómez, M.; Mauas, P. J. D. (2015). "Stellar parameters and chemical abundances of 223 evolved stars with and without planets". Astronomy & Astrophysics . 574 : A50. arXiv :1410.6422 Bibcode :2015A& A...574A..50J . doi :10.1051/0004-6361/201424474 . S2CID 53666931 . 1 2 "HD 175541" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2019-09-11 .↑ "Approved names" . NameExoworlds . Retrieved 2020-01-02 .↑ "International Astronomical Union | IAU" . www.iau.org . Archived from the original on 2022-12-05. Retrieved 2020-01-02 .1 2 3 Johnson, John Asher; et al. (2007). "Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants" . The Astrophysical Journal . 665 (1): 785– 793. arXiv :0704.2455 Bibcode :2007ApJ...665..785J doi :10.1086/519677 ↑ Luhn, Jacob K.; et al. (2019). "Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts" . The Astronomical Journal . 157 (4). 149. arXiv :1811.03043 Bibcode :2019AJ....157..149L . doi :10.3847/1538-3881/aaf5d0 S2CID 102486961 .
