70 Aquarii: Difference between revisions
Adding local short description: "Star in the constellation Aquarius", overriding Wikidata description "star" (Shortdesc helper) |
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<ref name=GaiaDR2>{{cite DR2|2605155264278408320}}</ref> |
<ref name=GaiaDR2>{{cite DR2|2605155264278408320}}</ref> |
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<ref name=gcrv1953>{{citation | last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | publisher=Carnegie Institute of Washington, D.C. | bibcode=1953GCRV..C......0W | postscript=. }}</ref> |
<ref name=gcrv1953>{{citation | last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | journal=Carnegie Institute Washington D.C. Publication | publisher=Carnegie Institute of Washington, D.C. | bibcode=1953GCRV..C......0W | postscript=. }}</ref> |
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<ref name=aaa393_897>{{citation | display-authors=1 | last1=Royer | first1=F. | last2=Grenier | first2=S. | last3=Baylac | first3=M.-O. | last4=Gómez | first4=A. E. | last5=Zorec | first5=J. | title=Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i | journal=Astronomy and Astrophysics | volume=393 | pages=897–911 |date=October 2002 | doi=10.1051/0004-6361:20020943 | bibcode=2002A&A...393..897R | postscript=. |arxiv = astro-ph/0205255 }}</ref> |
<ref name=aaa393_897>{{citation | display-authors=1 | last1=Royer | first1=F. | last2=Grenier | first2=S. | last3=Baylac | first3=M.-O. | last4=Gómez | first4=A. E. | last5=Zorec | first5=J. | title=Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i | journal=Astronomy and Astrophysics | volume=393 | pages=897–911 |date=October 2002 | doi=10.1051/0004-6361:20020943 | bibcode=2002A&A...393..897R | postscript=. |arxiv = astro-ph/0205255 | s2cid=14070763 }}</ref> |
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<ref name=mnrassa27_11>{{citation | last1=Corben | first1=P. M. | last2=Stoy | first2=R. H. | title=Photoelectric Magnitudes and Colours for Bright Southern Stars | journal=Monthly Notes of the Astronomical Society of Southern Africa | volume=27 | page=11 | year=1968 | bibcode=1968MNSSA..27...11C | postscript=. }}</ref> |
<ref name=mnrassa27_11>{{citation | last1=Corben | first1=P. M. | last2=Stoy | first2=R. H. | title=Photoelectric Magnitudes and Colours for Bright Southern Stars | journal=Monthly Notes of the Astronomical Society of Southern Africa | volume=27 | page=11 | year=1968 | bibcode=1968MNSSA..27...11C | postscript=. }}</ref> |
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<ref name=aaa392_515>{{citation | display-authors=1 | last1=Paunzen | first1=E. | last2=Handler | first2=G. | last3=Weiss | first3=W. W. | last4=Nesvacil | first4=N. | last5=Hempel | first5=A. | last6=Romero-Colmenero | first6=E. | last7=Vuthela | first7=F. F. | last8=Reegen | first8=P. | last9=Shobbrook | first9=R. R. | last10=Kilkenny | first10=D. | title=On the Period-Luminosity-Colour-Metallicity relation and the pulsational characteristics of lambda Bootis type stars | journal=Astronomy and Astrophysics | volume=392 | pages=515–528 |date=September 2002 | doi=10.1051/0004-6361:20020854 | bibcode=2002A&A...392..515P |arxiv = astro-ph/0207494 }}</ref> |
<ref name=aaa392_515>{{citation | display-authors=1 | last1=Paunzen | first1=E. | last2=Handler | first2=G. | last3=Weiss | first3=W. W. | last4=Nesvacil | first4=N. | last5=Hempel | first5=A. | last6=Romero-Colmenero | first6=E. | last7=Vuthela | first7=F. F. | last8=Reegen | first8=P. | last9=Shobbrook | first9=R. R. | last10=Kilkenny | first10=D. | title=On the Period-Luminosity-Colour-Metallicity relation and the pulsational characteristics of lambda Bootis type stars | journal=Astronomy and Astrophysics | volume=392 | pages=515–528 |date=September 2002 | issue=2 | doi=10.1051/0004-6361:20020854 | bibcode=2002A&A...392..515P |arxiv = astro-ph/0207494 | s2cid=54666586 }}</ref> |
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<ref name=Houk1999>{{citation |
<ref name=Houk1999>{{citation |
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| version=5.1 | journal=Astronomy Reports |
| version=5.1 | journal=Astronomy Reports |
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| year=2017 | volume=61 | issue=1 | pages=80–88 |
| year=2017 | volume=61 | issue=1 | pages=80–88 |
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| bibcode=2017ARep...61...80S | postscript=. }}</ref> |
| doi=10.1134/S1063772917010085 | bibcode=2017ARep...61...80S | s2cid=125853869 | postscript=. }}</ref> |
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<ref name=gaspar2016>{{citation |
<ref name=gaspar2016>{{citation |
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| volume=826 | issue=2 | pages=171 | year=2016 |
| volume=826 | issue=2 | pages=171 | year=2016 |
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| doi=10.3847/0004-637X/826/2/171 | bibcode=2016ApJ...826..171G |
| doi=10.3847/0004-637X/826/2/171 | bibcode=2016ApJ...826..171G |
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| arxiv=1604.07403 | postscript=. }}</ref> |
| arxiv=1604.07403 | s2cid=119241004 |
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| postscript=. }}</ref> |
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<ref name=SIMBAD>{{cite simbad | title=70 Aqr | accessdate=2019-05-19 | postscript=. }}</ref> |
<ref name=SIMBAD>{{cite simbad | title=70 Aqr | accessdate=2019-05-19 | postscript=. }}</ref> |
Revision as of 13:07, 8 October 2020
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aquarius |
Right ascension | 22h 48m 30.21043s[1] |
Declination | –10° 33′ 19.7143″[1] |
Apparent magnitude (V) | 6.19[2] |
Characteristics | |
Evolutionary stage | main sequencec |
Spectral type | F0 V[3] |
B−V color index | +0.28[2] |
Variable type | δ Sct[4] |
Astrometry | |
Radial velocity (Rv) | –5.8[5] km/s |
Proper motion (μ) | RA: +31.535[1] mas/yr Dec.: +7.915[1] mas/yr |
Parallax (π) | 7.6654 ± 0.0704 mas[1] |
Distance | 425 ± 4 ly (130 ± 1 pc) |
Absolute magnitude (MV) | +0.88[6] |
Details | |
Radius | 4.17+0.17 −0.23[1] R☉ |
Luminosity | 44.8±0.5[1] L☉ |
Surface gravity (log g) | 3.48[6] cgs |
Temperature | 7,314+187 −144[1] K |
Metallicity [Fe/H] | 0.02±0.15[7] dex |
Rotational velocity (v sin i) | 110[8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
70 Aquarii is a variable star located 425[1] light years away from the Sun in the equatorial constellation of Aquarius. It has the variable star designation FM Aquarii;[6] 70 Aquarii is the Flamsteed designation. It is near the lower limit of visibility to the naked eye, appearing as a dim, yellow-white hued star with a baseline apparent visual magnitude of 6.19.[2] This star is moving closer to the Earth with a heliocentric radial velocity of –5.8 km/s.[5]
This is an F-type main-sequence star with a stellar classification of F0 V.[3] Located in the lower part of the instability strip, it is a Delta Scuti-type variable that ranges in brightness from magnitude 6.16 down to 6.19 with a period of 125 minutes (0.087 days).[4] The star has a high rate of spin, showing a projected rotational velocity of 110 km/s.[8] It has four[1] times the Sun's radius and is radiating 45[1] times the luminosity of the Sun from its photosphere at an effective temperature of around 7,314 K.[1]
References
- ^ a b c d e f g h i j k l Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data 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 source at VizieR.
- ^ a b c Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C.
- ^ a b Houk, N.; Swift, C. (1999), "Michigan catalogue of two-dimensional spectral types for the HD Stars", Michigan Spectral Survey, 5, Bibcode:1999MSS...C05....0H.
- ^ a b Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports, 5.1, 61 (1): 80–88, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085, S2CID 125853869.
- ^ a b Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities", Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington, D.C., Bibcode:1953GCRV..C......0W.
- ^ a b c Paunzen, E.; et al. (September 2002), "On the Period-Luminosity-Colour-Metallicity relation and the pulsational characteristics of lambda Bootis type stars", Astronomy and Astrophysics, 392 (2): 515–528, arXiv:astro-ph/0207494, Bibcode:2002A&A...392..515P, doi:10.1051/0004-6361:20020854, S2CID 54666586
- ^ Gáspár, András; et al. (2016), "The Correlation between Metallicity and Debris Disk Mass", The Astrophysical Journal, 826 (2): 171, arXiv:1604.07403, Bibcode:2016ApJ...826..171G, doi:10.3847/0004-637X/826/2/171, S2CID 119241004.
{{citation}}
: CS1 maint: unflagged free DOI (link) - ^ a b Royer, F.; et al. (October 2002), "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i", Astronomy and Astrophysics, 393: 897–911, arXiv:astro-ph/0205255, Bibcode:2002A&A...393..897R, doi:10.1051/0004-6361:20020943, S2CID 14070763.
- ^ "70 Aqr". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-05-19.
{{cite web}}
: CS1 maint: postscript (link)