Short description: Star in the constellation Aries
66 Arietis (abbreviated 66 Ari) is a double star[3] in the northern constellation of Aries. 66 Arietis is the Flamsteed designation. It has an apparent visual magnitude of 6.03,[2] putting it near the limit for naked eye visibility. The magnitude 10.4 companion is located at an angular separation of 0.810 arcseconds from the primary along a position angle of 65°.[3] The distance to this pair, as determined from parallax measurements made during the Gaia satellite mission, is approximately 230 light-years (71 parsecs).
The spectrum of the primary component matches a stellar classification of K0 IV,[5] with the luminosity class of IV indicating this is a subgiant star. It has 6.9 times the radius of the Sun and shines with 22.5 times the Sun's energy. This energy is radiated from the outer atmosphere at an effective temperature of 4,804 K[7] giving it the cool orange-hued glow of a K-type star.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 2.0 2.1 Oja, T. (September 1993), "UBV photometry of stars whose positions are accurately known. VII", Astronomy and Astrophysics Supplement Series 100 (3): 591–592, Bibcode: 1993A&AS..100..591O.
- ↑ 3.0 3.1 3.2 Fabricius, C.; Makarov, V. V. (April 2000), "Two-colour photometry for 9473 components of close Hipparcos double and multiple stars", Astronomy and Astrophysics 356: 141–145, Bibcode: 2000A&A...356..141F.
- ↑ 4.0 4.1 Feuillet, Diane K.; Bovy, Jo; Holtzman, Jon; Girardi, Léo; MacDonald, Nick; Majewski, Steven R.; Nidever, David L. (2016). "Determining Ages of APOGEE Giants with Known Distances". The Astrophysical Journal 817 (1): 40. doi:10.3847/0004-637X/817/1/40. Bibcode: 2016ApJ...817...40F.
- ↑ 5.0 5.1 Harlan, E. A. (September 1969), "MK classifications for F- and G-type stars. I", Astronomical Journal 74: 916–919, doi:10.1086/110881, Bibcode: 1969AJ.....74..916H.
- ↑ 6.0 6.1 6.2 Massarotti, Alessandro et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal 135 (1): 209–231, doi:10.1088/0004-6256/135/1/209, Bibcode: 2008AJ....135..209M.
- ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Yu, Jie; Khanna, Shourya; Themessl, Nathalie; Hekker, Saskia; Dréau, Guillaume; Gizon, Laurent; Bi, Shaolan (2023). "Revised Extinctions and Radii for 1.5 Million Stars Observed by APOGEE, GALAH, and RAVE". The Astrophysical Journal Supplement Series 264 (2): 41. doi:10.3847/1538-4365/acabc8. Bibcode: 2023ApJS..264...41Y.
- ↑ Martig, Marie; Fouesneau, Morgan; Rix, Hans-Walter; Ness, Melissa; Mészáros, Szabolcs; García-Hernández, D. A.; Pinsonneault, Marc; Serenelli, Aldo et al. (2016). "Red giant masses and ages derived from carbon and nitrogen abundances". Monthly Notices of the Royal Astronomical Society 456 (4): 3655. doi:10.1093/mnras/stv2830. Bibcode: 2016MNRAS.456.3655M.
- ↑ "* 66 Ari". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+66+Ari.
External links
 | Original source: https://en.wikipedia.org/wiki/66 Arietis. Read more |
