11 Aquilae
| Observation data EpochJ2000EquinoxJ2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 18h59m05.73920s[1] |
| Declination | +13° 37′ 20.0725″[1] |
| Apparent magnitude(V) | 5.220[2] |
| Characteristics | |
| Spectral type | F8 V[3] |
| U−Bcolor index | +0.07[4] |
| B−Vcolor index | +0.53[4] |
| R−Icolor index | 0.3 |
| Astrometry | |
| Radial velocity(Rv) | +13.6[2]km/s |
| Proper motion(μ) | RA:+14.475[1]mas/yr Dec.:–124.382[1]mas/yr |
| Parallax(π) | 20.9187 ± 0.1107mas[1] |
| Distance | 155.9 ± 0.8ly (47.8 ± 0.3pc) |
| Absolute magnitude(MV) | 2.96[5] |
| Details | |
| Radius | 3.49+0.10 −0.11[1]R☉ |
| Luminosity | 15.4±0.1[1]L☉ |
| Surface gravity(logg) | 3.94[5]cgs |
| Temperature | 6,118+94 −89[1]K |
| Metallicity[Fe/H] | –0.07[5]dex |
| Rotational velocity(vsini) | 24.6±0.7[6]km/s |
| Age | 1.5[2]Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
11 Aquilae(abbreviated11 Aql) is a single[8]starin theequatorialconstellationofAquila.11 Aquilaeis theFlamsteed designation.It has anapparent visual magnitudeof 5.2,[2]which means it is faintly visible to the naked eye. Based upon an annualparallaxshift of20.9mas,[1]the distance to this star is approximately 156light-years(48parsecs). The brightness of this star is diminished by 0.33 in magnitude because ofextinctionfrominterstellar gas and dust.[9]
This is anF-type main sequence starwith astellar classificationof F8 V.[3]It is radiating about 15.4 times the luminosity of the Sun from itsouter atmosphereat aneffective temperatureof 6,118 K,[1]giving it the yellow-white glow of anF-type star.[10]11 Aquilae has been listed as a candidate for membership in theUrsa Major Moving Group,but most likely does not belong to thatassociation.[11]
References
[edit]- ^abcdefghijBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData Release 2: Summary of the contents and survey properties ".Astronomy & Astrophysics.616.A1.arXiv:1804.09365.Bibcode:2018A&A...616A...1G.doi:10.1051/0004-6361/201833051.Gaia DR2 record for this sourceatVizieR.
- ^abcdHolmberg, 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,S2CID118577511.
- ^abEggen, O. J. (1962), "Space-velocity vectors for 3483 stars with proper motion and radial velocity",Royal Observatory Bulletin,51:79,Bibcode:1962RGOB...51...79E.
- ^abNicolet, 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.
- ^abcBalachandran, 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.
- ^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,retrieved2012-07-26.
- ^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,S2CID14878976.
- ^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,S2CID10713221.
- ^"The Colour of Stars",Australia Telescope, Outreach and Education,Commonwealth Scientific and Industrial Research Organisation,December 21, 2004, archived fromthe originalon February 22, 2012,retrieved2012-01-16.
- ^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.
