Astronomy:HD 283572

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Short description: Young star in constellation Taurus

Coordinates: Sky map 04h 21m 58.8483s, +28° 18′ 06.5119″

HD 283572
250px
A combined y band (near-infrared) and visual band light curve for V987 Tauri, adapted from Strassmeier and Rice (1998)[1]
Observation data
Equinox J2000.0]] (ICRS)
Constellation Taurus[2]
Right ascension  04h 21m 58.8485s[3]
Declination +28° 18′ 06.513″[3]
Apparent magnitude (V) 8.87 – 9.1[4]
Characteristics
Evolutionary stage pre-main-sequence star[5]
Spectral type G5[6]
Apparent magnitude (B) 9.80[7]
Apparent magnitude (G) 8.80[7]
Apparent magnitude (R) 9.14[7]
Apparent magnitude (J) 7.414[7]
Variable type T Tau[6]
Astrometry
Radial velocity (Rv)15.0±1.5[6] km/s
Proper motion (μ) RA: 8.837±0.027[3] mas/yr
Dec.: −26.426±0.017[3] mas/yr
Parallax (π)7.8735 ± 0.0190[3] mas
Distance414.2 ± 1.0 ly
(127.0 ± 0.3 pc)
Details
Mass1.6[6] M☉
Radius2.2[6] R☉
Luminosity5.5[6] L☉
Temperature5,770[6] K
Metallicity [Fe/H]0.7±0.2[5] dex
Rotation1.55 d[5]
Rotational velocity (v sin i)78[5] km/s
Age9[6] Myr
Other designations
V987 Tauri, BD+27 657, HD 283572, HIP 20388, TYC 1828-481-1, GSC 01828-00481, 2MASS J04215884+2818066[7]
Database references
SIMBADdata

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.[5] It is a rather evolved protostar which already dispersed its birth shroud.[6] 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.[8] HD 283572 will eventually evolve to an A-type main-sequence star when on the main sequence.[5] It is no longer accreting mass, and is magnetically decoupled from the remnants of the protoplanetary disk,[5] belonging to the terminal, 3rd phase of the disk evolution.[9] Submillimeter Array (SMA) 1.3mm observations of HD 283572 detected an extreme brightening event with a radio luminosity of 8.3×1016 erg/s/Hz that spanned 9 hours on January 17th 2022.[10][11] 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.[10][11]

In 1987, Frederick M. Walter et al. announced that HD 283572 is a variable star.[12] It was given its variable star designation, V987 Tauri, in 1989.[13]

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.[9] A search for planetary transits was performed but no planets were detected as of 2019.[14]

References

  1. ↑ 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. 
  2. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific 99 (617): 695. doi:10.1086/132034. Bibcode: 1987PASP...99..695R  Constellation record for this object at VizieR.
  3. ↑ 3.0 3.1 3.2 3.3 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.
  4. ↑ "V987 Tau". AAVSO. https://vsx.aavso.org/index.php?view=detail.top&oid=36004. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 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, doi:10.1051/0004-6361:20041739, Bibcode: 2005A&A...432..671S 
  6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 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, doi:10.1086/522924, Bibcode: 2007ApJ...671.1813T 
  7. ↑ 7.0 7.1 7.2 7.3 7.4 "HD 283572". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+283572. 
  8. ↑ 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 
  9. ↑ 9.0 9.1 Yasui, Chikako; Hamano, Satoshi; Fukue, Kei; Kondo, Sohei; Sameshima, Hiroaki; Takenaka, Keiichi; Matsunaga, Noriyuki; Ikeda, Yuji et al. (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, doi:10.3847/1538-4357/ab45ee, Bibcode: 2019ApJ...886..115Y 
  10. ↑ 10.0 10.1 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. doi:10.3847/2041-8213/ad18ba. Bibcode: 2024ApJ...962L..12L. 
  11. ↑ 11.0 11.1 Extreme Eruption on Young Sun-like Star Signals Savage Environment for Developing Exoplanets, https://www.cfa.harvard.edu/news/extreme-eruption-young-sun-star-signals-savage-environment-developing-exoplanets 
  12. ↑ Walter, F. M.; Brown, A.; Linsky, J. L.; Rydgren, A. E.; Vrba, F.; Roth, M.; Carrasco, L.; Chugainov, P. F. et al. (March 1987). "X-Ray Sources in Regions of Star Formation. II. The Pre--Main-Sequence G Star HDE 283572". Astrophysical Journal 314: 297–307. doi:10.1086/165059. Bibcode: 1987ApJ...314..297W. 
  13. ↑ Kholopov, P. N.; Samus, N. N.; Kazarovets, B. V.; Frolov, M. S.; Kireeva, N. N. (April 1989). "The 69th Name-List of Variable Stars". Information Bulletin on Variable Stars 3323: 1. Bibcode: 1989IBVS.3323....1K. 
  14. ↑ 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, doi:10.1093/mnras/sty3151, Bibcode: 2019MNRAS.483.1642H 



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