Psi3 Piscium
  | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Pisces |
| Right ascension | 01h 09m 49.20090s[1] |
| Declination | +19° 39′ 30.2649″[1] |
| Apparent magnitude (V) | 5.56[2] |
| Characteristics | |
| Evolutionary stage | subgiant[1] |
| Spectral type | F9 IIIa[3] or G0 IV[4] |
| B−V color index | −0.70[2] |
| Astrometry | |
| Radial velocity (Rv) | −6.6±2.1[5] km/s |
| Proper motion (μ) | RA: −5.971[1] mas/yr Dec.: +9.170[1] mas/yr |
| Parallax (π) | 7.8074±0.0721 mas[1] |
| Distance | 418 ± 4 ly (128 ± 1 pc) |
| Absolute magnitude (MV) | +3.38[6] |
| Details | |
| Mass | 2.69[7] M☉ |
| Radius | 10.1[7] R☉ |
| Luminosity | 87[7] L☉ |
| Surface gravity (log g) | 2.86[7] cgs |
| Temperature | 5,553[7] K |
| Metallicity [Fe/H] | +0.88±0.21[8] dex |
| Rotation | 11 d[9] |
| Rotational velocity (v sin i) | 87.7±4.4[6] km/s |
| Age | 590[9] Myr |
| Other designations | |
| ψ3 Psc, 81 Piscium, BD+18°153, HD 6903, HIP 5454, HR 339, SAO 92283[10] | |
| Database references | |
| SIMBAD | data |
Psi3 Piscium, which is Latinized from ψ3 Piscium, is a solitary,[11] yellow-hued star in the zodiac constellation of Pisces. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.56. Based upon an annual parallax shift of 7.8 mas as seen from Earth, it is located about 418 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.33 due to interstellar dust.[4] The star is drifting closer to the Sun with a radial velocity of −7 km/s.
This F-type subgiant star with a stellar classification of F9 IIIa[3] or G0IV.[4] It is an X-ray source with a luminosity of (0.82±0.13)×1030 erg s−1 in the 0.3−10 keV band.[12] The projected rotational velocity is 87.7±4.4 km/s.[6] It has 2.7 times the mass of the Sun and 10.1 times the Sun's radius.[7] The star is radiating 87 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 5,553 K.[7]
References
[edit]- 1 2 3 4 5 6 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.
- 1 2 Høg, E.; et al. (March 2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy and Astrophysics, 355: L27–L30, Bibcode:2000A&A...355L..27H, doi:10.1888/0333750888/2862.
- 1 2 Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.
- 1 2 3 van Belle, G. T.; et al. (May 2008), "The Palomar Testbed Interferometer Calibrator Catalog", The Astrophysical Journal Supplement Series, 176 (1): 276–292, arXiv:0711.4194, Bibcode:2008ApJS..176..276V, doi:10.1086/526548, S2CID 10713221.
- ↑ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
- 1 2 3 Reiners, Ansgar (January 2006), "Rotation- and temperature-dependence of stellar latitudinal differential rotation", Astronomy and Astrophysics, 446 (1): 267–277, arXiv:astro-ph/0509399, Bibcode:2006A&A...446..267R, doi:10.1051/0004-6361:20053911, S2CID 8642707
- 1 2 3 4 5 6 7 Ayres, Thomas (2023). "In the Trenches of the Solar-Stellar Connection. VII. Wilson-Bappu 2022". The Astrophysical Journal Supplement Series. 266 (1): 6. Bibcode:2023ApJS..266....6A. doi:10.3847/1538-4365/acb535.
- ↑ Behr, Bradford B. (November 2003), "Rotation Velocities of Red and Blue Field Horizontal-Branch Stars", The Astrophysical Journal Supplement Series, 149 (1): 101–121, arXiv:astro-ph/0307232, Bibcode:2003ApJS..149..101B, doi:10.1086/378352, S2CID 13371613.
- 1 2 Isaacson, Howard; Fischer, Debra (2010). "Chromospheric Activity and Jitter Measurements for 2630 Stars on the California Planet Search". The Astrophysical Journal. 725 (1): 875. arXiv:1009.2301. Bibcode:2010ApJ...725..875I. doi:10.1088/0004-637X/725/1/875.
- ↑ "psi03 Psc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-07-22.
{{cite web}}: CS1 maint: postscript (link) - ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- ↑ Gondoin, P. (December 2005), "The relation between X-ray activity and rotation in intermediate-mass G giants", Astronomy and Astrophysics, 444 (2): 531–538, Bibcode:2005A&A...444..531G, doi:10.1051/0004-6361:20053567.
