p Puppis (HD 60863) is a star system the constellation Puppis. This system consists of a B8V[3] (blue main-sequence) star and a secondary star at 7.4 AU, much smaller than the primary, as well as farther companions.[6] Its apparent magnitude is 4.65[2] and it is approximately 222 light years away based on parallax.[1]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 35m 22.89366s[1] |
| Declination | −28° 22′ 09.5735″[1] |
| Apparent magnitude (V) | 4.65[2] |
| Characteristics | |
| Spectral type | B8V[3] |
| U−B color index | -0.43[4] |
| B−V color index | -0.12[4] |
| Astrometry | |
| Radial velocity (Rv) | +3.30[5] km/s |
| Proper motion (μ) | RA: -65.93[1] mas/yr Dec.: -19.73[1] mas/yr |
| Parallax (π) | 14.72 ± 0.67 mas[1] |
| Distance | 220 ± 10 ly (68 ± 3 pc) |
| Absolute magnitude (MV) | 0.46[2] |
| Orbit[6] | |
| Primary | A |
| Companion | B |
| Period (P) | 10 years |
| Semi-major axis (a) | 7.4 AU |
| Details | |
| A | |
| Mass | 3.1±0.1[6] M☉ |
| Radius | 2.4[6] R☉ |
| Luminosity | 120[7] L☉ |
| Surface gravity (log g) | 4.29[8] cgs |
| Temperature | 12,680[7] K |
| Rotational velocity (v sin i) | 203[7] km/s |
| Age | 110+50 −20[6] Myr |
| B | |
| Mass | 0.58+0.0 −0.3[6] M☉ |
| Radius | 0.54[6] R☉ |
| Temperature | 4,000[6] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
In addition to the inner pair, there are the distant companions HIP 36890, at apparent magnitude 7.83[9] and projected separation of 38,700 AU, which is itself an astrometric binary, and a faint white dwarf at a distance of 1,300 AU. This make p Puppis a five-star system.[6]
References
edit- ^ a b c d e f 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 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 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.
- ^ a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42 (2): 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry
- ^ Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv:0705.0878. Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776. S2CID 119323941.
- ^ a b c d e f g h i Waisberg, Idel; Klein, Ygal; Katz, Boaz (June 2024). "Hidden Companions to Intermediate-mass Stars. XX. Discovery of a 0.58 M☉, 7.4 au Companion to p Puppis*". Research Notes of the AAS. 8 (6): 160. doi:10.3847/2515-5172/ad5724. ISSN 2515-5172.
- ^ a b c Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars". Astronomy & Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691. S2CID 55586789. Vizier catalog entry
- ^ 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
- ^ "HIP 36890". SIMBAD. Centre de données astronomiques de Strasbourg.
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