Adverts

Open Access Articles- Top Results for 106 Aquarii

106 Aquarii

<tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Astrometry</th></tr></th></tr><tr><th colspan="2" style="text-align: center"></tr><tr style="vertical-align:top;"><td>Radial velocity (Rv)</td><td>+14.0[5] km/s</td></tr><tr style="vertical-align:top;"><td>Proper motion (μ)</td><td> RA: +27.23[2] mas/yr
Dec.: –2.94[2] mas/yr </td></tr><tr style="vertical-align:top;"><td>Parallax (π)</td><td>8.61 ± 0.54[2]mas</td></tr><tr style="vertical-align:top;"><td>Distance</td><td>380 ± 20 ly
(116 ± 7 pc)</td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Details</th></tr></th></tr><tr><th colspan="2" style="text-align: center"></th></tr><tr style="vertical-align:baseline;"><td>Radius</td><td>2.7–3.2[6] R</td></tr><tr style="vertical-align:baseline;"><td>Rotational velocity (v sin i)</td><td>370[7] km/s</td></tr><tr><th colspan="2" style="text-align: center"></th></tr> <tr><th style="background-color: #FFFFC0; text-align: center;" colspan="2">Other designations</th></tr><tr><td colspan="2">
106 Aqr, i1 Aquarii, BD–19 6500, FK5 1621, HD 222847, HIP 117089, HR 8998, SAO 165854.[8]
</td></tr>
106 Aquarii <tr><td colspan="2" style="text-align:center;">

Location of 106 Aquarii (circled)[1]
</tr></td>

Observation data
Epoch J2000.0 (ICRS)      Equinox J2000.0 (ICRS)
Constellation Aquarius
Right ascension 23h 44m 12.07893s[2]
Declination –18° 16′ 36.9688″[2]
style="text-align:left" #REDIRECTmw:Help:Magic words#Other
This page is a soft redirect. Apparent magnitude (V)

#REDIRECTmw:Help:Magic words#Other
This page is a soft redirect. +5.244[3]

Characteristics
style="text-align:left" #REDIRECTmw:Help:Magic words#Other
This page is a soft redirect. Spectral type

#REDIRECTmw:Help:Magic words#Other
This page is a soft redirect. B9 V[4]

style="text-align:left" #REDIRECTmw:Help:Magic words#Other
This page is a soft redirect. U−B color index

#REDIRECTmw:Help:Magic words#Other
This page is a soft redirect. –0.239[3]

style="text-align:left" #REDIRECTmw:Help:Magic words#Other
This page is a soft redirect. B−V color index

#REDIRECTmw:Help:Magic words#Other
This page is a soft redirect. –0.086[3]

106 Aquarii is the Flamsteed designation for a star in the equatorial constellation of Aquarius. It has an apparent visual magnitude of +5.2,[3] making it bright enough to be viewed from the suburbs according to the Bortle Dark-Sky Scale. An annual parallax shift of 8.61[2] milliarcseconds yields an estimated distance of around Script error: No such module "convert". from Earth.

The spectrum of this star fits a stellar classification of B9 V,[4] indicating this is a B-type main sequence star. It is spinning rapidly with a projected rotational velocity of 370 km/s.[7] X-ray emission with a luminosity of 6.0 × 1029 erg s−1 has been detected from this star. This is unusual since a B-type star normally does not have any significant X-ray emission. Instead, it may have an undetected lower mass companion.[9]

References

  1. ^ Of the grouping of four stars within the circle, 106 Aquarii is the second from the left per:
    Sinnott, Roger W.; Perryman, Michael A. C. (1997), Millennium Star Atlas 3, Sky Publishing Corporation and the European Space Agency, p. 1351, ISBN 0-933346-82-4. 
  2. ^ a b c d e f van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752, doi:10.1051/0004-6361:20078357. 
  3. ^ a b c d Gutierrez-Moreno, Adelina et al. (1966), A System of photometric standards 1, Publicaciones Universidad de Chile, Department de Astronomy, pp. 1–17, Bibcode:1966PDAUC...1....1G. 
  4. ^ a b Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars 4, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1988mcts.book.....H. 
  5. ^ Wielen, R. et al. (1999), Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions (35), Astronomisches Rechen-Institut Heidelberg, Bibcode:1999VeARI..35....1W. 
  6. ^ 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, Bibcode:2001A&A...367..521P, arXiv:astro-ph/0012289, doi:10.1051/0004-6361:20000451. 
  7. ^ a b 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, Bibcode:2007A&A...463..671R, arXiv:astro-ph/0610785, doi:10.1051/0004-6361:20065224. 
  8. ^ "106 Aqr -- Star", SIMBAD (Centre de Données astronomiques de Strasbourg), retrieved 2012-07-15. 
  9. ^ Hubrig, S. et al. (June 2001), "Search for low-mass PMS companions around X-ray selected late B stars", Astronomy and Astrophysics 372: 152–164, Bibcode:2001A&A...372..152H, arXiv:astro-ph/0103201, doi:10.1051/0004-6361:20010452. 

External links