11 Aquilae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 18h 59m 05.73878s[1] |
| Declination | +13° 37′ 20.0743″[1] |
| Apparent magnitude (V) | 5.220[2] |
| Characteristics | |
| Evolutionary stage | subgiant[1] |
| Spectral type | F6IV[3] |
| U−B color index | +0.07[4] |
| B−V color index | +0.53[4] |
| R−I color index | 0.3 |
| Astrometry | |
| Radial velocity (Rv) | +13.6[2] km/s |
| Proper motion (μ) | RA: +14.853[1] mas/yr Dec.: −124.527[1] mas/yr |
| Parallax (π) | 20.9316±0.0742 mas[1] |
| Distance | 155.8 ± 0.6 ly (47.8 ± 0.2 pc) |
| Absolute magnitude (MV) | 2.96[5] |
| Details | |
| Mass | 1.67[6] M☉ |
| Radius | 3.40[7] R☉ |
| Luminosity | 14.8[7] L☉ |
| Surface gravity (log g) | 3.44[7] cgs |
| Temperature | 6,141[7] K |
| Metallicity [Fe/H] | −0.05[6] dex |
| Rotational velocity (v sin i) | 24.6±0.7[8] km/s |
| Age | 2.05[6] Gyr |
| Other designations | |
| BD+13°3841, HD 176303, HIP 93203, HR 7172, SAO 104308[9] | |
| Database references | |
| SIMBAD | data |
11 Aquilae (abbreviated 11 Aql) is a single[10] star in the equatorial constellation of Aquila. 11 Aquilae is the Flamsteed designation. It has an apparent visual magnitude of 5.2,[2] which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 20.9 mas,[1] the distance to this star is approximately 156 light-years (48 parsecs). The brightness of this star is diminished by 0.33 in magnitude because of extinction from interstellar gas and dust.[11]
This is an F-type main sequence star with a stellar classification of F6IV.[3] It is radiating about 14.8 times the luminosity of the Sun from its outer atmosphere at an effective temperature of 6,141 K,[7] giving it the yellow-white glow of an F-type star.[12] 11 Aquilae has been listed as a candidate for membership in the Ursa Major Moving Group, but most likely does not belong to that association.[13]
References
[edit]- ^ a b c d e f g 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.
- ^ a b c Holmberg, J.; Nordstrom, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511.
- ^ a b Abt, H. A. (1985). "Visual multiples. VIII. 1000 MK types". The Astrophysical Journal Supplement Series. 59: 95. Bibcode:1985ApJS...59...95A. doi:10.1086/191064.
- ^ a b Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N.
- ^ Balachandran, Suchitra (May 1, 1990), "Lithium depletion and rotation in main-sequence stars", Astrophysical Journal, Part 1, 354: 310–332, Bibcode:1990ApJ...354..310B, doi:10.1086/168691.
- ^ a b c Aguilera-Gómez, Claudia; Ramírez, Iván; Chanamé, Julio (2018). "Lithium abundance patterns of late-F stars: An in-depth analysis of the lithium desert". Astronomy and Astrophysics. 614: A55. arXiv:1803.05922. Bibcode:2018A&A...614A..55A. doi:10.1051/0004-6361/201732209.
- ^ a b c d e Stassun, Keivan G.; et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467.
- ^ Reiners, Ansgar; Schmitt, Jürgen H. M. M. (February 2003), "Rotation and differential rotation in field F- and G-type stars", Astronomy and Astrophysics, 398 (2): 647–661, Bibcode:2003A&A...398..647R, doi:10.1051/0004-6361:20021642.
- ^ "* 11 Aql", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2012-07-26.
- ^ 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.
- ^ 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.
- ^ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on February 22, 2012, retrieved 2012-01-16.
- ^ King, Jeremy R.; et al. (April 2003), "Stellar Kinematic Groups. II. A Reexamination of the Membership, Activity, and Age of the Ursa Major Group", The Astronomical Journal, 125 (4): 1980–2017, Bibcode:2003AJ....125.1980K, doi:10.1086/368241.
