Astronomy:35 Cancri
From HandWiki
Short description: Star in the constellation Cancer
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Cancer[1] |
| Right ascension | 08h 35m 19.44613s[2] |
| Declination | +19° 35′ 24.2306″[2] |
| Apparent magnitude (V) | +6.55[1] |
| Characteristics | |
| Evolutionary stage | subgiant[3][2] |
| Spectral type | G0 III[4] |
| B−V color index | +0.681±0.013[1] |
| Astrometry | |
| Radial velocity (Rv) | +34.9±1.2[1] km/s |
| Proper motion (μ) | RA: −34.554[2] mas/yr Dec.: −12.391[2] mas/yr |
| Parallax (π) | 5.3538 ± 0.0258[2] mas |
| Distance | 609 ± 3 ly (186.8 ± 0.9 pc) |
| Absolute magnitude (MV) | 0.22[1] |
| Details | |
| Mass | 2.51[5] M☉ |
| Radius | 9.0[5] R☉ |
| Luminosity | 71[5] L☉ |
| Surface gravity (log g) | 2.93[5] cgs |
| Temperature | 5,581[5] K |
| Metallicity [Fe/H] | +0.28[5] dex |
| Rotation | 10.96 days[6] |
| Rotational velocity (v sin i) | 99.0[7] km/s |
| Age | 346[8] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
35 Cancri is a star in the zodiac constellation of Cancer, located about 609 light-years from the Sun. It is a challenge to view with the naked eye even under ideal seeing conditions, having an apparent visual magnitude of +6.55.[1] The star is moving further from the Earth with a heliocentric radial velocity of +35 km/s,[1] and is a member of the Beehive Cluster.[10]
This is a subgiant star[3] with a stellar classification of G0 III.[4] It is rotating at a relatively fast clip, giving it an oblate shape with an equatorial bulge that is 5% larger than the polar radius.[11] 35 Cancri has a projected rotational velocity of 99 km/s.[7] This rotation is expected to decrease significantly as the star expands into a giant.[4] It has nine times the radius of the Sun, and is radiating 71 times the Sun's luminosity from its photosphere at an effective temperature of 5,581 K.[5]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 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.
- ↑ 3.0 3.1 Yang, X. L. et al. (November 2015), "Chemical Abundances of Member Stars in the Open Cluster NGC 2632 (Praesepe)", The Astronomical Journal 150 (5): 10, doi:10.1088/0004-6256/150/5/158, 158, Bibcode: 2015AJ....150..158Y
- ↑ 4.0 4.1 4.2 Gray, R. O. et al. (2001), "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars", The Astronomical Journal 121 (4): 2148, doi:10.1086/319956, Bibcode: 2001AJ....121.2148G.
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 Ayres, Thomas (2023). "In the Trenches of the Solar-Stellar Connection. VII. Wilson-Bappu 2022". The Astrophysical Journal Supplement Series 266 (1): 6. doi:10.3847/1538-4365/acb535. Bibcode: 2023ApJS..266....6A.
- ↑ Oelkers, Ryan J.; Rodriguez, Joseph E.; Stassun, Keivan G.; Pepper, Joshua; Somers, Garrett; Kafka, Stella; Stevens, Daniel J.; Beatty, Thomas G. et al. (2018). "Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey". The Astronomical Journal 155 (1): 39. doi:10.3847/1538-3881/aa9bf4. Bibcode: 2018AJ....155...39O.
- ↑ 7.0 7.1 van Saders, Jennifer L.; Pinsonneault, Marc H. (October 2013), "Fast Star, Slow Star; Old Star, Young Star: Subgiant Rotation as a Population and Stellar Physics Diagnostic", The Astrophysical Journal 776 (2): 20, doi:10.1088/0004-637X/776/2/67, 67, Bibcode: 2013ApJ...776...67V.
- ↑ Anderson, Richard I.; Hunt, Emily L. (2025). "A bird's eye view of stellar evolution through populations of variable stars in Galactic open clusters". Astronomy and Astrophysics 700: L13. doi:10.1051/0004-6361/202555111. Bibcode: 2025A&A...700L..13A.
- ↑ "35 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=35+Cnc.
- ↑ Wang, P. F. et al. (March 2014), "Characterization of the Praesepe Star Cluster by Photometry and Proper Motions with 2MASS, PPMXL, and Pan-STARRS", The Astrophysical Journal 784 (1): 10, doi:10.1088/0004-637X/784/1/57, 57, Bibcode: 2014ApJ...784...57W.
- ↑ van Belle, Gerard T. (March 2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review 20 (1): 51, doi:10.1007/s00159-012-0051-2, Bibcode: 2012A&ARv..20...51V.
 |  |
