Location of 11 Puppis (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07 56 51.53900 |
| Declination | −22° 52′ 48.4340″ |
| Apparent magnitude (V) | 4.20 |
| Characteristics | |
| Spectral type | F7/8 II |
| U−B color index | +0.44 |
| B−V color index | +0.72 |
| Astrometry | |
| Radial velocity (Rv) | +13.30 km/s |
| Proper motion (μ) | RA: −30.42 mas/yr Dec.: +11.49 mas/yr |
| Parallax (π) | 6.25 ± 0.23 mas |
| Distance | 520 ± 20 ly (160 ± 6 pc) |
| Absolute magnitude (MV) | −1.82 |
| Details | |
| Mass | 2.7 M☉ |
| Luminosity | 515 L☉ |
| Surface gravity (log g) | 1.99 cgs |
| Temperature | 5,868 K |
| Metallicity | +0.09 dex |
| Rotational velocity (v sin i) | 13.8 km/s |
| Other designations | |
| j Pup, 11 Pup, BD−22°2087, CD−22°5403, FK5 2615, GC 10756, HD 65228, HIP 38835, HR 3102, SAO 174852, GSC 06553-03890 | |
| Database references | |
| SIMBAD | data |
11 Puppis is a single star in the southern constellation of Puppis, located approximately 522 light years away based on parallax. It has the Bayer designation j Puppis; 11 Puppis is the Flamsteed designation. This object is visible to the naked eye as a faint, yellow-white star with an apparent visual magnitude of 4.20. It is moving further from the Earth with a heliocentric radial velocity of +13.3 km/s.
This is an evolved bright giant star with a stellar classification of F7/8 II. The spectrum displays a deficit of carbon, an excesses of nitrogen, and a high abundance of lithium. The first two anomalies suggest the giant has passed through a deep convection stage that would have also exhausted the lithium supply, indicating the current lithium abundance is of recent production. The star has 2.7 times the mass of the Sun and is radiating 515 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,868 K.
References
- ^ 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
- ^ 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
- ^ Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
- ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ Lyubimkov, L. S.; Petrov, D. V. (September 2017). "Analysis of the Non-LTE Lithium Abundance for a Large Sample of F-, G-, and K-Giants and Supergiants". Astrophysics. 60 (3): 333–347. arXiv:1710.04852. Bibcode:2017Ap.....60..333L. doi:10.1007/s10511-017-9487-4. S2CID 119333383.
- ^ Earle Luck, R. (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
- De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph/0608248. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. Vizier catalog entry
- "j Pup". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 8 September 2012.
- 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.
