Astronomy:Trumpler 27-1
240px The Trumpler 27 open cluster. Trumpler 27-1 is the brightest and reddest star in the image. | |
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 17h 36m 10.1193s[1] |
| Declination | −33° 29′ 40.617″[1] |
| Apparent magnitude (V) | 8.79[2] |
| Characteristics | |
| Evolutionary stage | Red supergiant |
| Spectral type | M0Ia[2] |
| Astrometry | |
| Radial velocity (Rv) | −18.71±0.9[1] km/s |
| Proper motion (μ) | RA: −0.057±0.049[1] mas/yr Dec.: −1.386±0.037[1] mas/yr |
| Parallax (π) | 0.3169 ± 0.0361[1] mas |
| Distance | approx. 10,000 ly (approx. 3,200 pc) |
| Details[3] | |
| Radius | 1,359 R☉ |
| Luminosity | 361,000 L☉ |
| Surface gravity (log g) | -0.24[4] cgs |
| Temperature | 3,790 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
Trumpler 27-1 is a red supergiant star that is a member of the massive, possible open cluster Trumpler-27, where a blue giant star, a yellow supergiant star, and two Wolf–Rayet stars are also located.
Observation history
Trumpler 27-1 was discovered and catalogued when the open cluster (not confirmed then) was first identified in the late 20th century. It has since remained largely unobserved, being featured in the Gaia Catalogue and other pieces of literature.[5]
Physical properties
Trumpler 27-1 is among the largest stars known, with a radius of over 1,360 solar radii. It is also 360,000 times more luminous than the Sun.[3] This star's spectral type is M0Ia,[6] meaning it possesses a cool temperature of below 3,800 K. So far, Trumpler 27-1 is the only identified red supergiant in the open cluster Trumpler 27.
Location
Trumpler 27–1, and the open cluster in which it is located, is in the constellation of Scorpius.
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 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.
- ↑ 2.0 2.1 2.2 "CD-33 12241". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CD-33+12241.
- ↑ 3.0 3.1 Healy, Sarah; Horiuchi, Shunsaku; Molla, Marta Colomer; Milisavljevic, Dan; Tseng, Jeff; Bergin, Faith; Weil, Kathryn; Tanaka, Masaomi (2024-03-23). "Red Supergiant Candidates for Multimessenger Monitoring of the Next Galactic Supernova". Monthly Notices of the Royal Astronomical Society 529 (4): 3630–3650. doi:10.1093/mnras/stae738. ISSN 0035-8711. Bibcode: 2024MNRAS.529.3630H.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedstarhorse - ↑ Stassun, Keivan G. et al. (2019-10-01). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256. Bibcode: 2019AJ....158..138S.
- ↑ Messineo, M.; Brown, A. G. A. (2019). "A Catalog of Known Galactic K-M Stars of Class I Candidate Red Supergiants in Gaia DR2". The Astronomical Journal 158 (1): 20. doi:10.3847/1538-3881/ab1cbd. Bibcode: 2019AJ....158...20M.
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