astro.wikisort.org - Star
HD 53367 is a binary star system in the constellation of Monoceros. The primary star was identified as a variable Herbig Ae/Be star in 1989.[5] Its companion, spectroscopically discovered in 2006, is a pre-main-sequence star star with an average separation of 1.7 AU.[3] The star system is embedded in the extended nebula IC 2177.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Monoceros |
| Right ascension | 07h 04m 25.5190s |
| Declination | −10° 27′ 15.6135″ |
| Apparent magnitude (V) | 6.96[1] |
| Characteristics | |
| Spectral type | B0IV/Ve[1] |
| Astrometry | |
| Proper motion (μ) | RA: -3.741 mas/yr Dec.: 1.772 mas/yr |
| Parallax (π) | 7.7682 ± 0.7854 mas[2] |
| Distance | approx. 420 ly (approx. 130 pc) |
| Orbit[3] | |
| Primary | HD 53367Aa |
| Companion | HD 53367Ab |
| Period (P) | 183.7±0.1 days |
| Semi-major axis (a) | 1.7 AU |
| Eccentricity (e) | 0.28±0.03 |
| Semi-amplitude (K1) (primary) | 19 km/s |
| Semi-amplitude (K2) (secondary) | 44 km/s |
| Details[4] | |
| HD 53367Aa | |
| Mass | 17.5 M☉ |
| Radius | 5.4 R☉ |
| Luminosity | 4600 L☉ |
| Temperature | 20600 K |
| Age | 3[5] Myr |
| HD 53367Ab | |
| Mass | 4.5±0.5[3] M☉ |
| Other designations | |
| HD 53367A: Gaia DR2 3046530911350220416 | |
| HD 53367B: Gaia DR2 3046530911345696256 | |
| Database references | |
| SIMBAD | data |
The binary HD 53367A is part of the hierarchical triple star system RST 3489, with an additional Herbig Ae/Be star HD 53367B of spectral class B1Ve with a projected separation of 0.6″. All stars in the system belong to the star-forming CMa OB1 association.[5] The Gaia early data release 3 parallax values for HD 53367A are highly discrepant though,[6] and the system may be about 1000 parsecs away, being correspondingly much more bright.[7]
Extended nebula
HD 53367A is a very young and gas-rich system, with most of the gas still obscuring the secondary component HD 53367Ab.[3]
References
- "HD 53367". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 March 2021.
- 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.
- The Herbig B0e star HD 53367: circumstellar activity and evidence of binarity
- Kobulnicky, Henry A.; Chick, William T.; Povich, Matthew S. (2019), MASS-LOSS RATES FOR O AND EARLY B STARS POWERING BOWSHOCK NEBULAE: EVIDENCE FOR BI-STABILITY BEHAVIOR, arXiv:1906.01201
- [https://www.jstor.org/stable/40679427?seq=1 Photometry of three Herbig Be stars: HD 53367, HD 200775 and HD 259431
- Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- Siebenmorgen, R.; Scicluna, P.; Krełowski, J. (2018), "Far-infrared emission of massive stars", Astronomy & Astrophysics, 620: A32, arXiv:1809.06658, doi:10.1051/0004-6361/201833546, S2CID 119202458
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