Star in the constellation Cassiopeia
Visual band light curve of R Cassiopeiae, from AAVSO data[ 10] R Cassiopeiae is avariable star in the northernconstellation ofCassiopeia . It is located approximately 570 light years distant from the Sun, but is drifting closer with aradial velocity of −23 km/s.[ 5] Mira-type variable star with a brightness that varies from magnitude +4.4 down to +13.5 over a period of 433.6 days.[ 3] naked eye as a faint, red-hued star.
Norman Robert Pogson discovered the star, in 1853.[ 11] [ 12] red giant star has astellar classification that varies from M6e to M10e,[ 3] emission features in thespectrum . Currently on theasymptotic giant branch ,[ 13] [ 6] mass of the Sun with an oxygen rich chemical abundance.[ 14] core , the star has expanded to 263[ 6] Sun's radius . On average, the star is radiating 3,837[ 6] luminosity of the Sun from its swollenphotosphere with aneffective temperature ranging around 2,812 K.[ 6] × 10−6 M ☉ /yr−1 [ 7] ′ [ 14]
^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation".Astronomy Letters .38 (5):331– 346.arXiv :1108.4971 Bibcode :2012AstL...38..331A .doi :10.1134/S1063773712050015 .eISSN 1562-6873 .ISSN 1063-7737 .S2CID 119257644 . ^a b c d e 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 atVizieR .^a b c d e Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars".Astronomy Reports . 5.1.61 (1):80– 88.Bibcode :2017ARep...61...80S .doi :10.1134/S1063772917010085 .S2CID 125853869 . ^a b Ducati, J. R. (2002). "Catalogue of Stellar Photometry in Johnson's 11-color system".CDS/ADC Collection of Electronic Catalogues .2237 : 0.Bibcode :2002yCat.2237....0D . ^a b Famaey, B.; et al. (January 2005). "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters".Astronomy and Astrophysics .430 (1):165– 186.arXiv :astro-ph/0409579 Bibcode :2005A&A...430..165F .doi :10.1051/0004-6361:20041272 .S2CID 17804304 . ^a b c d e f g Takeuti, Mine; et al. (2013)."A Method to Estimate the Masses of Asymptotic Giant Branch Variable Stars" .Publications of the Astronomical Society of Japan .65 (3): 60.Bibcode :2013PASJ...65...60T .doi :10.1093/pasj/65.3.60 ^a b McDonald, I.; De Beck, E.; Zijlstra, A. A.; Lagadec, E. (2018)."Pulsation-triggered dust production by asymptotic giant branch stars" .Monthly Notices of the Royal Astronomical Society .481 (4): 4984.arXiv :1809.07965 Bibcode :2018MNRAS.481.4984M .doi :10.1093/mnras/sty2607 S2CID 118969263 . ^a b Verberne, Sill; Koposov, Sergey E.; Rossi, Elena Maria; Marchetti, Tommaso; Kuijken, Konrad; Penoyre, Zephyr (2024). "Radial velocities from Gaia BP/RP spectra".Astronomy and Astrophysics .684 : A29.arXiv :2310.18101 Bibcode :2024A&A...684A..29V .doi :10.1051/0004-6361/202348406 . ^ "R Cas" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2019-08-17 .^ "Download Data" .aavso.org . AAVSO. Retrieved1 October 2021 .^ Cannon, Annie J. (1907). "Second catalogue of variable stars".Annals of Harvard College Observatory .55 :1– 94.Bibcode :1907AnHar..55....1C . ^ Toone, John (2010)."British variable star associations, 1848-1908" (PDF) .J. Br. Astron. Assoc .120 (3):135– 151. Retrieved12 January 2025 . ^ Assaf, K. A. (December 2018)."Multi-epoch Proper Motion Magnetic Field Comparison of SiO Masers around R Cas" .The Astrophysical Journal .869 (1): 19.Bibcode :2018ApJ...869...80A .doi :10.3847/1538-4357/aaea65 ^a b Ueta, T.; et al. (May 2010). "The interface between the stellar wind and interstellar medium around R Cassiopeiae revealed by far-infrared imaging".Astronomy and Astrophysics .514 : 6.arXiv :0911.4918 Bibcode :2010A&A...514A..16U .doi :10.1051/0004-6361/200913455 .S2CID 54745858 . A16.
