V Antliae (V Ant) is a Mira variable star in the constellation Antlia. It varies in brightness between magnitudes 8.2 and 14.0 with a period of 303 days.[3] Even at its brightest, it is far too faint to be seen with the naked eye.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Antlia |
| Right ascension | 10h 21m 09.11138s[2] |
| Declination | −34° 47′ 18.7333″[2] |
| Apparent magnitude (V) | 8.2 - 14.0[3] |
| Characteristics | |
| Spectral type | M7IIIe[3] |
| Variable type | Mira[3] |
| Astrometry | |
| Radial velocity (Rv) | 2.00 km/s |
| Proper motion (μ) | RA: −2.244±0.196[4] mas/yr Dec.: 7.071±0.223[4] mas/yr |
| Parallax (π) | 1.2582 ± 0.1304 mas[4] |
| Distance | approx. 2,600 ly (approx. 790 pc) |
| Details | |
| Luminosity | 24,000[4] L☉ |
| Temperature | 3,293[4] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
V Antliae's variability was discovered by examining Harvard College Observatory photographic plates, and was announced by Henrietta S. Leavitt and Edward C. Pickering in 1913.[5]
1612 MHz OH maser emission was first detected from this star in 1973.[6] The star's water vapor emission line at 22 GHz was first observed at Haystack Observatory in 1973.[7]
References
edit- ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
- ^ a b van Leeuwen, F. (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.Vizier catalog entry
- ^ a b c d 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: B/gcvs. Bibcode:2009yCat....102025S.
- ^ a b c d e 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.
- ^ Leavitt, Henrietta S.; Pickering, Edward C. (May 1913). "25 New Variable Stars, Principally in Harvard Maps 39 and 45". Harvard College Observatory Circular. 179: 1-4. Bibcode:1913HarCi.179....1L. Retrieved 1 August 2024.
- ^ Dickinson, Dale F.; Chaisson, Eric J. (May 1973). "Long-Period Variables: Correlation of Stellar Period with OH Radial-Velocity Pattern". Astrophysical Journal. 181: L13S-L138. Bibcode:1973ApJ...181L.135D. doi:10.1086/181200. Retrieved 1 August 2024.
- ^ Dickinson, D. F. (March 1976). "Water emission from infrared stars". Astrophysical Journal Supplement Series. 30: 259-271. Bibcode:1976ApJS...30..259D. doi:10.1086/190362. Retrieved 1 August 2024.
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