 A combined y band (near-infrared) and visual band light curve for V987 Tauri, adapted from Strassmeier and Rice (1998) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04 21 58.8483 |
| Declination | +28° 18′ 06.5119″ |
| Characteristics | |
| Evolutionary stage | pre-main-sequence star |
| Spectral type | G5 |
| Apparent magnitude (B) | 9.80 |
| Apparent magnitude (g) | 8.80 |
| Apparent magnitude (R) | 9.14 |
| Apparent magnitude (J) | 7.414 |
| Variable type | T Tau |
| Astrometry | |
| Radial velocity (Rv) | 15.0±1.5 km/s |
| Proper motion (μ) | RA: 8.84±0.03 mas/yr Dec.: -26.426±0.017 mas/yr |
| Parallax (π) | 7.8735 ± 0.0190 mas |
| Distance | 414.2 ± 1.0 ly (127.0 ± 0.3 pc) |
| Details | |
| Mass | 1.6 M☉ |
| Radius | 2.2 R☉ |
| Luminosity | 5.5 L☉ |
| Temperature | 5770 K |
| Metallicity | 0.7±0.2 dex |
| Rotation | 1.55 d |
| Rotational velocity (v sin i) | 78 km/s |
| Age | 9 Myr |
| Other designations | |
| HDE 283572, 2MASS J04215884+2818066, BD+27 657, GSC 01828-00481, HIP 20388, TYC 1828-481-1, V987 Tauri, Gaia DR2 164536250037820160 | |
| Database references | |
| SIMBAD | data |
HD 283572 is a young T Tauri-type pre-main sequence star in the constellation of Taurus about 414 light years away, belonging to the Taurus Molecular Cloud. It is a rather evolved protostar which already dispersed its birth shroud. The star emits a very high X-ray flux of 10 ergs/s. That radiation flux associated with the magnetic activity induced a high coronal temperature of 3 kEv and regular flares. HD 283572 will eventually evolve to an A-type main-sequence star when on the main sequence. It is no longer accreting mass, and is magnetically decoupled from the remnants of the protoplanetary disk, belonging to the terminal, 3rd phase of the disk evolution. Submillimeter Array (SMA) 1.3mm observations of HD 283572 detected an extreme brightening event with a radio luminosity of 8.3x10erg/s/Hz that spanned 9 hours on January 17th 2022. Although HD 283572 was observed by the SMA on 8 separate nights, millimeter emission was detected on one night only, strongly suggesting stellar variability as a result of an extreme stellar flare.
Protoplanetary system
HD 283572 is surrounded by a light (<0.0004 M☉) and faint protoplanetary disk with uncertain inclination. Different instruments yielded measurements of disk inclination to the plane of sky from 35 to 60 degrees. A search for planetary transits was performed but no planets were detected as of 2019.
References
- Strassmeier, K. G.; Rice, J. B. (November 1998). "Doppler imaging of stellar surface structure. IX. A high-resolution image of the weak-lined T Tauri star HDE 283572 = V987 Tauri". Astronomy and Astrophysics. 339: 497–506. Bibcode:1998A&A...339..497S. Retrieved 8 April 2022.
- ^ "HD 283572". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-11-01.
- ^ Scelsi, L.; Maggio, A.; Peres, G.; Pallavicini, R. (2005), "Coronal properties of G-type stars in different evolutionary phases", Astronomy & Astrophysics, 432 (2): 671–685, arXiv:astro-ph/0501631, Bibcode:2005A&A...432..671S, doi:10.1051/0004-6361:20041739, S2CID 15298988
- ^ Torres, Rosa M.; Loinard, Laurent; Mioduszewski, Amy J.; Rodriguez, Luis F. (2007), "VLBA Determination of the Distance to Nearby Star-forming Regions. II. Hubble 4 and HDE 283572 in Taurus", The Astrophysical Journal, 671 (2): 1813–1819, arXiv:0708.4403, Bibcode:2007ApJ...671.1813T, doi:10.1086/522924, S2CID 16357104
- ^ 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.
- Favata, F.; Micela, G.; Sciortino, S. (1998), "X-ray spectroscopy of the weak-lined T Tauri star HD 283572", Astronomy and Astrophysics, 336: 413–420, Bibcode:1998A&A...337..413F
- ^ Yasui, Chikako; Hamano, Satoshi; Fukue, Kei; Kondo, Sohei; Sameshima, Hiroaki; Takenaka, Keiichi; Matsunaga, Noriyuki; Ikeda, Yuji; Kawakita, Hideyo; Otsubo, Shogo; Watase, Ayaka; Taniguchi, Daisuke; Mizumoto, Misaki; Izumi, Natsuko; Kobayashi, Naoto (2019), "Possible Progression of Mass-flow Processes around Young Intermediate-mass Stars Based on High-resolution Near-infrared Spectroscopy. I. Taurus", The Astrophysical Journal, 886 (2): 115, arXiv:1909.09850, Bibcode:2019ApJ...886..115Y, doi:10.3847/1538-4357/ab45ee, S2CID 202718804
- ^ Lovell, Joshua Bennett; Keating, Garrett K.; Wilner, David J.; Andrews, Sean M.; MacGregor, Meredith; Rahman, Ramisa Akther; Rao, Ramprasad; Williams, Jonathan P. (February 2024). "SMA Detection of an Extreme Millimeter Flare from the Young Class III Star HD 283572". The Astrophysical Journal Letters. 962 (1): L12. arXiv:2402.01833. Bibcode:2024ApJ...962L..12L. doi:10.3847/2041-8213/ad18ba.
- ^ Extreme Eruption on Young Sun-like Star Signals Savage Environment for Developing Exoplanets
- Hambálek, Ľ.; Vaňko, M.; Paunzen, E.; Smalley, B. (2019), "T Tauri stars in the SuperWASP and NSVS surveys", Monthly Notices of the Royal Astronomical Society, 483 (2): 1642–1654, arXiv:1811.08655, Bibcode:2019MNRAS.483.1642H, doi:10.1093/mnras/sty3151
