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.[3] It is a rather evolved protostar which already dispersed its birth shroud.[4] The star emits a very high X-ray flux of 1031 ergs/s. That radiation flux associated with the magnetic activity induced a high coronal temperature of 3 kEv and regular flares.[6] HD 283572 will eventually evolve to an A-type main-sequence star when on the main sequence.[3] It is no longer accreting mass, and is magnetically decoupled from the remnants of the protoplanetary disk,[3] belonging to the terminal, 3rd phase of the disk evolution.[7] Submillimeter Array (SMA) 1.3mm observations of HD 283572 detected an extreme brightening event with a radio luminosity of 8.3x1016erg/s/Hz that spanned 9 hours on January 17th 2022.[8][9] 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.[8][9]
 A combined y band (near-infrared) and visual band light curve for V987 Tauri, adapted from Strassmeier and Rice (1998)[1] | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 21m 58.8483s[2] |
| Declination | +28° 18′ 06.5119″[2] |
| Characteristics | |
| Evolutionary stage | pre-main-sequence star[3] |
| Spectral type | G5[4] |
| Apparent magnitude (B) | 9.80[2] |
| Apparent magnitude (g) | 8.80[5] |
| Apparent magnitude (R) | 9.14[2] |
| Apparent magnitude (J) | 7.414[2] |
| Variable type | T Tau[4] |
| Astrometry | |
| Radial velocity (Rv) | 15.0±1.5[4] km/s |
| Proper motion (μ) | RA: 8.84±0.03 mas/yr[5] Dec.: -26.426±0.017 mas/yr[5] |
| Parallax (π) | 7.8735 ± 0.0190 mas[5] |
| Distance | 414.2 ± 1.0 ly (127.0 ± 0.3 pc) |
| Details[4] | |
| Mass | 1.6 M☉ |
| Radius | 2.2 R☉ |
| Luminosity | 5.5 L☉ |
| Temperature | 5770 K |
| Metallicity [Fe/H] | 0.7±0.2[3] dex |
| Rotation | 1.55 d[3] |
| Rotational velocity (v sin i) | 78[3] 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 |
Protoplanetary system
editHD 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.[7] A search for planetary transits was performed but no planets were detected as of 2019.[10]
References
edit- ^ 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.
- ^ a b c d e "HD 283572". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-11-01.
- ^ a b c d e f g 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
- ^ a b c d e 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
- ^ a b c 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
- ^ a b 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
- ^ a b 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.
- ^ a b 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