Astronomy:V1339 Aquilae
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Short description: Star in the constellation Aquila
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 50m 17.47881s[2] |
| Declination | +07° 54′ 08.6936″[2] |
| Apparent magnitude (V) | 6.22 to 6.53[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | B2.5IVe[5] |
| U−B color index | −0.7 |
| B−V color index | −0.1 |
| Variable type | Be star[3] |
| Astrometry | |
| Radial velocity (Rv) | −30.10±5[6] km/s |
| Proper motion (μ) | RA: −1.753±0.033[2] mas/yr Dec.: −3.171±0.025[2] mas/yr |
| Parallax (π) | 1.5275 ± 0.0369[2] mas |
| Distance | 2,140 ± 50 ly (650 ± 20 pc) |
| Details | |
| Mass | 9.5[4] M☉ |
| Radius | 4.64[4] R☉ |
| Luminosity | 6,281[4] L☉ |
| Surface gravity (log g) | 4.08[4] cgs |
| Temperature | 23,848[4] K |
| Rotational velocity (v sin i) | 140[4] km/s |
| Age | 23[7] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
V1339 Aquilae, also known as HD 187567, is a Be star in the constellation Aquila. At its brightest its apparent magnitude is 6.22,[3] making it barely visible to the naked eye at a location with very little light pollution. It is located just 8 arc seconds from the center of the open cluster NGC 6828.[8]
V1339 Aquilae was discovered to be a Be star in 1925 by P. W. Merrill, M. L. Humason and C. G. Burwell.[9] The star's variability was detected in 1966 by A. W. J. Cousins, R. Lake and R. H. Stoy,[10] and because of this it was given its variable star designation, V1339 Aquilae, in 1979.[11]
V1339 Aquilae is around 9.5 times as massive as the Sun and has 4.6 times its diameter.[4] Its binary nature was discovered by speckle interferometry in 1983, at the Kitt Peak 4 meter telescope. At the time of these speckle observations the stars were separated by 0.057 arc seconds.[12]
References
- ↑ EAS (1997). "The HIPPARCOS and TYCHO catalogues". Astrometric and Photometric Star Catalogues Derived from the ESA Hipparcos Space Astrometry Mission. ESA SP Series (Noordwijk, Netherlands: ESA Publications Division) 1200. ISBN 9290923997. Bibcode: 1997ESASP1200.....E. https://cdsarc.cds.unistra.fr/viz-bin/ftp-index?/ftp/cats/more/HIP/cdroms/cats. Retrieved 15 October 2022.
- ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports 61 (1): 80. doi:10.1134/S1063772917010085. Bibcode: 2017ARep...61...80S.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Cochetti, Y. R.; Zorec, J.; Cidale, L. S.; Arias, M. L.; Aidelman, Y.; Torres, A. F.; Frémat, Y.; Granada, A. (2020). "Be and Bn stars: Balmer discontinuity and stellar-class relationship". Astronomy and Astrophysics 634: A18. doi:10.1051/0004-6361/201936444. Bibcode: 2020A&A...634A..18C.
- ↑ Jaschek, C.; Jaschek, M. (1992). "A southern be star survey : Spectra and envelope radii". Astronomy and Astrophysics Supplement Series 95: 535. Bibcode: 1992A&AS...95..535J.
- ↑ Turon, C. et al. (1993). "Version 2 of the HIPPARCOS Input Catalogue". Bulletin d'Information du Centre de Donnees Stellaires 43: 5. Bibcode: 1993BICDS..43....5T.
- ↑ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 KPC from the Sun". Monthly Notices of the Royal Astronomical Society 410 (1): 190. doi:10.1111/j.1365-2966.2010.17434.x. Bibcode: 2011MNRAS.410..190T.
- ↑ Zejda, M.; Paunzen, E.; Baumann, B.; Mikulášek, Z.; Liška, J. (December 2012). "Catalogue of variable stars in open cluster fields". Astronomy & Astrophysics 548: A97–A102. doi:10.1051/0004-6361/201219186. Bibcode: 2012A&A...548A..97Z.
- ↑ Merrill, Paul W.; Humason, Milton L.; Burrell, Cora G. (June 1925). "Discovery and Observations of Stars of Class Be". Astrophysical Journal 61: 389–417. doi:10.1086/142899. Bibcode: 1925ApJ....61..389M.
- ↑ Cousins, A. W. J.; Lake, R.; Stoy, R. H. (1966). "Photoelectric magnitudes and colours of southern stars, II". Royal Observatory Bulletins 121 (121): 1. Bibcode: 1966RGOB..121....1C.
- ↑ Kholopov, P. N.; Kukarkina, N. P.; Perova, N. B. (April 1979). "64th Name-List of Variable Stars". Information Bulletin on Variable Stars 1581 (1581): 1–8. Bibcode: 1979IBVS.1581....1K. https://ibvs.konkoly.hu/pub/ibvs/1501/1581.pdf. Retrieved 27 August 2024.
- ↑ McAlister, Harold A.; Hartkopf, William I. H.; Hutter, Donald J.; Franz, Otto G. (March 1987). "ICCD Speckle Observations of Binary Stars. II. Measurements During 1982 -1985 from the Kitt Peak 4 m Telescope". Astronomical Journal 93: 688–777. doi:10.1086/114353. Bibcode: 1987AJ.....93..688M.
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