10 Aquilae

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10 Aquilae
Aquila constellation map.svg
Red circle.svg
Location of 10 Aquilae (circled)
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Aquila
Right ascension 18h 58m 46.92419s [1]
Declination +13° 54′ 23.9354″ [1]
Apparent magnitude  (V)5.893 [2]
Characteristics
Spectral type F0 p Sr Eu [3]
U−B color index +0.100 [2]
B−V color index +0.257 [2]
Variable type roAp [4]
Astrometry
Radial velocity (Rv)+14.5 [5]  km/s
Proper motion (μ)RA: +1.01 [1]   mas/yr
Dec.: -51.11 [1]   mas/yr
Parallax (π)13.45 ± 0.67  mas [1]
Distance 240 ± 10  ly
(74 ± 4  pc)
Absolute magnitude  (MV)+2.69 [6]
Details
Mass 1.39 ± 0.07 [7]   M☉
Radius 2.46 ± 0.06 [7]   R☉
Luminosity 17.73 ± 0.88 [7]   L☉
Surface gravity (log g)3.8 [7]   cgs
Temperature 7,550 [7]   K
Metallicity [Fe/H]+0.55 ± 0.17 [8]   dex
Rotational velocity (v sin i)+18 [9]  km/s
Other designations
10  Aql, V1286  Aquilae, BD+13°3838, HD  176232, HIP  93179, HR  7167, SAO  104303
Database references
SIMBAD data

10 Aquilae (abbreviated 10 Aql) is a star in the equatorial constellation of Aquila. 10 Aquilae is the Flamsteed designation. It has an apparent visual magnitude of 5.9 [2] and thus is a faint star that is just visible to the naked eye in dark skies. The brightness of this star is diminished by 0.17 in visual magnitude from extinction caused by interstellar gas and dust. [8] Based on an annual parallax shift of 13.45  mas, the distance to this star is around 240 light-years (74 parsecs ).

The outer envelope of this star has an effective temperature of 7,550 K, giving it the yellow-white hued glow of an F-type star. [10] It is a type of chemically peculiar star known as an Ap star, as indicated by the 'p' in the stellar classification.

10 Aql was described as a variable star in 1973 and a period of six days was suggested. [11] Its small amplitude, period, chemical peculiarity, and position in the H–R diagram indicated that it may be an α2 CVn variable and it was given this classification in the General Catalogue of Variable Stars, along with the variable star designation V1286 Aquilae. [12] Later studies showed that the period was spurious and several very short pulsation periods were found: 11.6, 12.0, and 13.4 minutes. This indicated that 10 Aql was a member of the new rapidly oscillating Ap star class. [13]

Related Research Articles

<span class="mw-page-title-main">Eta Aquilae</span> Multiple star in the constellation Aquila

Eta Aquilae is the Bayer designation for a multiple star in the equatorial constellation of Aquila, the eagle. It was once part of the former constellation Antinous. On average, this star has an apparent visual magnitude of 3.87, making it one of the brighter members of Aquila. Based upon parallax measurements made during the Hipparcos mission, this star is located at a distance of roughly 1,382 light-years, although the parallax estimate has a 44% margin of error.

<span class="mw-page-title-main">Delta Scuti</span> Star in the constellation Scutum

Delta Scuti, Latinized from δ Scuti, is a variable star in the southern constellation Scutum. With an apparent visual magnitude that fluctuates around 4.72, it is the fifth-brightest star in this small and otherwise undistinguished constellation. Analysis of the parallax measurements place this star at a distance of about 199 light-years from Earth. It is drifting closer with a radial velocity of −45 km/s.

<span class="mw-page-title-main">Delta Aquilae</span> Binary star system in the constellation Aquila

Delta Aquilae, Latinized from δ Aquilae, is a binary star system in the equatorial constellation of Aquila. It has an apparent visual magnitude of 3.4 and, based upon parallax measurements, is located at a distance of about 50.6 light-years from Earth. It is drifting closer with a radial velocity of −30 km/s. The system is predicted to come to within 25.4 ly (7.8 pc) of the Sun in around 335,000 years.

<span class="mw-page-title-main">18 Aquilae</span> Triple star system in the constellation Aquila

18 Aquilae is a triple star system in the constellation of Aquila. 18 Aquilae is the Flamsteed designation; it also bears the variable star designation Y Aquilae. It has an apparent visual magnitude of 5.07. The distance to this system can be estimated from the annual parallax shift of 6.43 mas, yielding a value of around 510 light-years away from Earth.

<span class="mw-page-title-main">19 Aquilae</span> Star in the constellation Aquila

19 Aquilae is a single star located 142 light-years away from the Sun in the equatorial constellation of Aquila. 19 Aquilae is the Flamsteed designation. It is visible to the naked eye as a dim, yellow-white hued star with an apparent visual magnitude of 5.23. The star is moving closer to the Earth with a heliocentric radial velocity of −46.7 km/s.

<span class="mw-page-title-main">27 Aquilae</span> Star in the constellation Aquila

27 Aquilae is a star in the equatorial constellation of Aquila. 27 Aquilae is its Flamsteed designation though it also bears the Bayer designation d Aquilae. It has an apparent visual magnitude of 5.49, which is faintly visible to the naked eye. Based upon parallax measurements made during the Hipparcos mission, this star is at a distance of 440 light-years from Earth, give or take a 20 light-year margin of error. At this distance, the brightness of the star is diminished from extinction caused by interstellar gas and dust.

<span class="mw-page-title-main">28 Aquilae</span> Star in the constellation Aquila

28 Aquilae, abbreviated 28 Aql, is a star in the equatorial constellation of Aquila. 28 Aquilae is its Flamsteed designation though it also bears the Bayer designation A Aquilae, and the variable star designation V1208 Aquilae. It has an apparent visual magnitude is 5.5, making this a faint star that requires dark suburban skies to view. The annual parallax shift of 9.6 mas means this star is located at a distance of approximately 340 light-years from Earth.

<span class="mw-page-title-main">35 Aquilae</span> A-type main sequence star in the constellation Aquila

35 Aquilae is a star in the equatorial constellation of Aquila. 35 Aquilae is its Flamsteed designation though it also bears the Bayer designation c Aquilae. The apparent visual magnitude of this star is 5.8, which means it is a faint star but visible to the naked eye from dark suburban or rural skies. It has an annual parallax shift of 16.34 mas that is caused by the Earth's orbit around the Sun. This yields a distance estimate of 200 light-years, give or take a 4 light-year margin of error. At this distance, the visual magnitude is diminished by 0.26 from extinction caused by interstellar gas and dust.

8 Aquilae is a star in the equatorial constellation of Aquila, located 271 light years away from the Sun. 8 Aquilae is the Flamsteed designation. It can be viewed with the naked eye in good seeing conditions, appearing as a dim, yellow-white hued star with an apparent visual magnitude of 6.08. The star is moving further from the Earth with a heliocentric radial velocity of +12 km/s.

<span class="mw-page-title-main">Alpha Circini</span> Star in the constellation Circinus

Alpha Circini is a variable star in the faint, southern, circumpolar constellation of Circinus. At an apparent visual magnitude of 3.19, it is the brightest star in the constellation and can be readily seen with the naked eye from the southern hemisphere. Parallax measurements of this star yield an estimated distance of 54.0 light-years from the Earth.

Alpha Cygni variables are variable stars which exhibit non-radial pulsations, meaning that some portions of the stellar surface are contracting at the same time other parts expand. They are supergiant stars of spectral types B or A. Variations in brightness on the order of 0.1 magnitudes are associated with the pulsations, which often seem irregular, due to beating of multiple pulsation periods. The pulsations typically have periods of several days to several weeks.

<span class="mw-page-title-main">HD 84810</span> Star in the constellation Carina

HD 84810, also known as l Carinae, is a star in the southern constellation of Carina. Its apparent magnitude varies from about 3.4 to 4.1, making it readily visible to the naked eye and one of the brightest members of Carina. Based upon parallax measurements, it is approximately 1,600 light-years from Earth.

<span class="mw-page-title-main">Y Carinae</span> Star in the constellation Carina

Y Carinae is a Classical Cepheid variable, a type of variable star, in the constellation Carina. Its apparent magnitude varies from 7.53 to 8.48.

<span class="mw-page-title-main">V Aquilae</span> Star in the constellation Aquila

V Aquilae is a carbon star and semiregular variable star in the constellation Aquila. It has an apparent magnitude which varies between 6.6 and 8.4 and is located around 400 parsecs (1,300 ly) away.

<span class="mw-page-title-main">U Aquilae</span> Variable binary star system in the constellation Aquila

U Aquilae is a binary star system in the constellation Aquila, Located approximately 614 parsecs (2,000 ly) away from Earth.

<span class="mw-page-title-main">V1401 Aquilae</span> Star in the constellation Aquila

V1401 Aquilae is a single, semi-regular pulsating star in the equatorial constellation of Aquila. It has the designation HD 190390 from the Henry Draper Catalogue, and was formerly designated 64 Sagittarii. The evolutionary status of the star is unclear, and it has been classified as a post-AGB object, a UU Herculis variable, or belonging to the W Virginis variable subclass of the type II Cepheids. It is dimly visible to the naked eye with an apparent visual magnitude that fluctuates around 6.38. Based on parallax measurements, it is located at a distance of approximately 2,380 light years. It lies 21.5° from the galactic plane.

<span class="mw-page-title-main">W Virginis</span> Variable star in the constellation Virgo

W Virginis is the prototype W Virginis variable, a subclass of the Cepheid variable stars. It is located in the constellation Virgo, and varies between magnitudes 9.46 and 10.75 over a period of approximately 17 days.

<span class="mw-page-title-main">Gamma Equulei</span> Chemically peculiar A-type main sequence star in the constellation Equuleus

Gamma Equulei, Latinized from γ Equulei, is a double star in the northern constellation of Equuleus. It is located at a distance of around 118 light-years from Earth and is visible to the naked eye with a slightly variable apparent visual magnitude of around 4.7. The star is drifting closer to the Sun with a radial velocity of −16.5 km/s.

<span class="mw-page-title-main">W Aquilae</span> Variable star in the constellation Aquila

W Aquilae is a variable star in the constellation of Aquila. It is a type of evolved star known as an S-type star. Due to its relatively close distance of 1,200 light-years and equatorial location, it is easy to observe and heavily studied.

<span class="mw-page-title-main">HR 1217</span> Star in the constellation Eridanus

HR 1217 is a variable star in the constellation Eridanus. It has the variable star designation DO Eridani, but this seldom appears in the astronomical literature; it is usually called either HR 1217 or HD 24712. At its brightest, HR 1217 has an apparent magnitude of 5.97, making it very faintly visible to the naked eye for an observer with excellent dark-sky conditions.

References

  1. 1 2 3 4 5 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, S2CID   18759600.
  2. 1 2 3 4 Stepien, K. (December 1968), "Photometric behavior of magnetic stars", Astrophysical Journal, 154: 945, Bibcode:1968ApJ...154..945S, doi:10.1086/149815.
  3. ↑ 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. ↑ Sachkov, M.; Kochukov, O.; Ryabchikova, T.; Leone, F.; Bagnulo, S.; Weiss, W. W. (2008). "Spectroscopic study of pulsations in the atmosphere of ro Ap star 10 Aql". Contributions of the Astronomical Observatory Skalnaté Pleso. 38 (2): 323–328. arXiv: 0712.1340 . Bibcode:2008CoSka..38..323S.
  5. ↑ Wilson, Ralph Elmer (1953), "General catalogue of stellar radial velocities", Washington, Carnegie Institution of Washington, Bibcode:1953GCRV..C......0W.
  6. ↑ Ryabchikova, T. A.; Savanov, I. S.; Hatzes, A. P.; Weiss, W. W.; Handler, G. (2000). "Abundance analyses of ro Ap stars. VI. 10 Aql and HD 122970". Astronomy and Astrophysics. 357: 981. Bibcode:2000A&A...357..981R.
  7. 1 2 3 4 5 Nesvacil, N.; Shulyak, D.; Ryabchikova, T. A.; Kochukhov, O.; Akberov, A.; Weiss, W. (2013). "A self-consistent chemically stratified atmosphere model for the ro Ap star 10 Aquilae". Astronomy & Astrophysics. 552: A28. arXiv: 1212.3163 . Bibcode:2013A&A...552A..28N. doi:10.1051/0004-6361/201220320. S2CID   53680222.
  8. 1 2 Koleva, M.; Vazdekis, A. (February 2012), "Stellar population models in the UV. I. Characterisation of the New Generation Stellar Library", Astronomy & Astrophysics, 538: A143, arXiv: 1111.5449 , Bibcode:2012A&A...538A.143K, doi:10.1051/0004-6361/201118065, S2CID   53999614.
  9. ↑ 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 (3): 897–911, arXiv: astro-ph/0205255 , Bibcode:2002A&A...393..897R, doi:10.1051/0004-6361:20020943, S2CID   14070763.
  10. ↑ "The Colour of Stars", Australia Telescope, Outreach and Education, Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original on March 18, 2012, retrieved 2012-01-16.
  11. ↑ Guerrero, G.; Mantegazza, L. (1973). "The photometric variability of Ap STAR 10 AQL". Memorie della Società Astronomia Italiana. 44: 377. Bibcode:1973MmSAI..44..377G.
  12. ↑ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  13. ↑ Heller, Clayton H.; Kramer, Karen S. (1990). "A frequency analysis of the new rapidly oscillating AP star 10 Aquilae". Monthly Notices of the Royal Astronomical Society. 244: 372. Bibcode:1990MNRAS.244..372H.
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