Astronomy:11 Aquilae

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Short description: Star in the constellation Aquila
11 Aquilae
Observation data
Equinox J2000.0]] (ICRS)
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[1] mas
Distance155.8 ± 0.6 ly
(47.8 ± 0.2 pc)
Absolute magnitude (MV)2.96[5]
Details
Mass1.67[6] M☉
Radius3.40[7] R☉
Luminosity14.8[7] L☉
Surface gravity (log g)3.44[7] cgs
Temperature6,141[7] K
Metallicity [Fe/H]−0.05[6] dex
Rotational velocity (v sin i)24.6±0.7[8] km/s
Age2.05[6] Gyr
Other designations
BD+13°3841, HD 176303, HIP 93203, HR 7172, SAO 104308[9]
Database references
SIMBADdata

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

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 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.
  2. ↑ 2.0 2.1 2.2 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, doi:10.1051/0004-6361/200811191, Bibcode: 2009A&A...501..941H. 
  3. ↑ 3.0 3.1 Abt, H. A. (1985). "Visual multiples. VIII. 1000 MK types". The Astrophysical Journal Supplement Series 59: 95. doi:10.1086/191064. Bibcode: 1985ApJS...59...95A. 
  4. ↑ 4.0 4.1 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. 
  5. ↑ Balachandran, Suchitra (May 1, 1990), "Lithium depletion and rotation in main-sequence stars", Astrophysical Journal, Part 1 354: 310–332, doi:10.1086/168691, Bibcode: 1990ApJ...354..310B. 
  6. ↑ 6.0 6.1 6.2 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. doi:10.1051/0004-6361/201732209. Bibcode: 2018A&A...614A..55A. 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S. 
  8. ↑ 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, doi:10.1051/0004-6361:20021642, Bibcode: 2003A&A...398..647R. 
  9. ↑ "* 11 Aql". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%2A+11+Aql. 
  10. ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E. 
  11. ↑ van Belle, G. T. et al. (May 2008), "The Palomar Testbed Interferometer Calibrator Catalog", The Astrophysical Journal Supplement Series 176 (1): 276–292, doi:10.1086/526548, Bibcode: 2008ApJS..176..276V. 
  12. ↑ "The Colour of Stars", Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004, http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html, retrieved 2012-01-16. 
  13. ↑ 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, doi:10.1086/368241, Bibcode: 2003AJ....125.1980K, https://tigerprints.clemson.edu/cgi/viewcontent.cgi?article=1248&context=physastro_pubs. 



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