Spectroscopic binary star system in the constellation Perseus
43 Persei is a binary star [ 7] [ 11] system in the northern constellation Perseus . It is visible to the naked eye as a dim, yellow-white hued star with an apparent visual magnitude of 5.28.[ 2] The system is located around 38.5 parsecs (125.4 ly) distant from the Sun, based on parallax .[ 1]
This is a double-lined spectroscopic binary with an orbital period of 30.4 days and an eccentricity of 0.6.[ 7] The primary component is an F-type main-sequence star with a stellar classification of F5V,[ 3] a star that is fusing its core hydrogen . It has 1.54[ 8] times the mass of the Sun , 2.4[ 8] times the Sun's radius , and is spinning with a projected rotational velocity of 17 km/s (11 mi/s).[ 10] The star shines 10.8[ 2] times brighter than the Sun at an effective temperature of 6,609 K (6,336 °C; 11,437 °F).[ 9]
There are distant companions B (separation 75.5" and magnitude 10.66), C (separation 85.6" and magnitude 12.18), and D (separation 68" and magnitude 13.43).[ 12]
^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics . 474 (2): 653–664. arXiv :0708.1752 . Bibcode :2007A&A...474..653V . doi :10.1051/0004-6361:20078357 . S2CID 18759600 . Vizier catalog entry
^ a b c d e f 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 . Vizier catalog entry
^ a b Abt, Helmut A. (2009). "Mk Classifications of Spectroscopic Binaries". The Astrophysical Journal Supplement Series . 180 : 117–118. Bibcode :2009ApJS..180..117A . doi :10.1088/0067-0049/180/1/117 . S2CID 122811461 .
^ a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers . 42 : 443. Bibcode :2014JAVSO..42..443M . Vizier catalog entry
^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters . 32 (11): 759–771. arXiv :1606.08053 . Bibcode :2006AstL...32..759G . doi :10.1134/S1063773706110065 . S2CID 119231169 .
^ Brown, A. G. A. ; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties" . Astronomy & Astrophysics . 616 . A1. arXiv :1804.09365 . Bibcode :2018A&A...616A...1G . doi :10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR .
^ a b c Wallerstein, George (February 1973). "Improved Elements for the Hyades Group Binary 43 Persei" . Publications of the Astronomical Society of the Pacific . 85 (503): 115. Bibcode :1973PASP...85..115W . doi :10.1086/129417 .
^ a b c d Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics . 352 : 555–562. arXiv :astro-ph/9911002 . Bibcode :1999A&A...352..555A . Vizier catalog entry
^ a b c David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal . 804 (2): 146. arXiv :1501.03154 . Bibcode :2015ApJ...804..146D . doi :10.1088/0004-637X/804/2/146 . S2CID 33401607 . Vizier catalog entry
^ a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H . 5050 . Bibcode :1995yCat.5050....0H .
^ Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society . 389 (2): 869. arXiv :0806.2878 . Bibcode :2008MNRAS.389..869E . doi :10.1111/j.1365-2966.2008.13596.x . S2CID 14878976 . {{cite journal }}
: CS1 maint: unflagged free DOI (link ) Vizier catalog entry
^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog" . The Astronomical Journal . 122 (6): 3466. Bibcode :2001AJ....122.3466M . doi :10.1086/323920 . Vizier catalog entry