Detection of a Disk Surrounding the Variably Accreting Young Star HBC722,Research Notes of the AAS

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Detection of a Disk Surrounding the Variably Accreting Young Star HBC722
Research Notes of the AAS Pub Date : 2020-09-15 , DOI: 10.3847/2515-5172/abb813
Xi Yek (Zach) ₁ , Michael M. Dunham _{1,

2} , Hctor G. Arce ₃ , Tyler L. Bourke ₄ , Xuepeng Chen ₅ , Joel D. Green ₆ , gnes Kspl _{7,

8,

9} , Steven N. Longmore ₁₀

Affiliation

Department of Physics, State University of New York at Fredonia, 280 Central Ave, Fredonia, NY 14063, USA
Center for Astrophysics∣Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101, USA
SKA Organisation, Jodrell Bank, Lower Withington, Macclesfield, Cheshire SK11 9FT, UK
Purple Mountain Observatory, Chinese Academy of Sciences, 2 West Beijing Road, Nanjing 210008, People's Republic of China
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 02138, USA
Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Konkoly-Thege Mikls t 15-17, 1121 Budapest, Hungary
Max Planck Institute for Astronomy, Knigstuhl 17, D-69117 Heidelberg, Germany
ELTE Etvs Lornd University, Institute of Physics, Pzmny Pter stny 1/A, 1117 Budapest, Hungary
Astrophysics Research Institute, Liverpool John Moores University, 146 Brownlow Hill, Liverpool L3 5RF, UK

We present new ALMA 233 GHz continuum observations of the FU Orionis Object HBC722. With these data we detect HBC722 at millimeter wavelengths for the first time, use this detection to calculate a circumstellar disk mass of0.024 M ⊙ , and discuss implications for the burst triggering mechanism.

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