Psi3 Aquarii

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For other stars named Psi Aqr, see Psi Aquarii


Psi3 Aquarii
Diagram showing star positions and boundaries of the Aquarius constellation and its surroundings
Cercle rouge 100%.svg

Location of ψ3 Aquarii (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 23h 18m 57.67658s[1]
Declination –09° 36′ 38.7054″[1]
Apparent magnitude (V) 4.98[2]
Characteristics
Spectral type A0 V[3]
U−B color index –0.02
B−V color index –0.02[2]
Astrometry
Radial velocity (Rv) –10[4] km/s
Proper motion (μ) RA: +43.33[1] mas/yr
Dec.: –8.30[1] mas/yr
Parallax (π) 12.47 ± 0.43[1] mas
Distance 262 ± 9 ly
(80 ± 3 pc)
Details
Radius 2[5] R
Rotational velocity (v sin i) 144[6] km/s
Other designations
95 Aquarii, ADS 16671, BD–10 6094, FK5 1609, HD 219832, HIP 115115, HR 8865, SAO 146635.[7]
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

Psi3 Aquarii is the Bayer designation for a visual binary star[8] system in the constellation of Aquarius. It has an apparent visual magnitude of 4.98,[2] which is bright enough to be seen with the naked eye. Parallax measurements give a distance estimate of roughly 262 light-years (80 parsecs).[1]

The main component of this system is an A-type main sequence star with a stellar classification of A0 V.[3] Its companion is an 11th magnitude star 1.5 arcseconds from the primary.[9] This system is an X-ray source with a luminosity of 8.34 × 1029 erg s–1. This radiation most likely comes from the companion star.[8]

References[edit]

  1. ^ a b c d e f van Leeuwen, F. (November 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. 
  2. ^ a b c Johnson, H. L. et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory 4 (99), Bibcode:1966CoLPL...4...99J. 
  3. ^ a b Cowley, A. et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819. 
  4. ^ Wilson, Ralph Elmer (1953), General Catalogue of Stellar Radial Velocities, Washington: Carnegie Institution of Washington, Bibcode:1953QB901.W495...... 
  5. ^ Pasinetti Fracassini, L. E. et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics 367: 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451. 
  6. ^ Royer, F.; Zorec, J.; Gómez, A. E. (February 2007), "Rotational velocities of A-type stars. III. Velocity distributions", Astronomy and Astrophysics 463 (2): 671–682, arXiv:astro-ph/0610785, Bibcode:2007A&A...463..671R, doi:10.1051/0004-6361:20065224. 
  7. ^ "95 Aqr -- Star", SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-05. 
  8. ^ a b Schröder, C.; Schmitt, J. H. M. M. (November 2007), "X-ray emission from A-type stars", Astronomy and Astrophysics 475 (2): 677–684, Bibcode:2007A&A...475..677S, doi:10.1051/0004-6361:20077429. 
  9. ^ 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. 

External links[edit]