Spectroscopic classification of the sub-mm outburst of a protostar
PI:
Doug Johnstone
Co-I(s):
Gregory Herczeg, Jeong-Eun Lee, Watson Varricatt, Klaus Hodapp, Carlos Contreras-Pena, Yong-hee Lee, Steve Mairs
Abstract
The main phase of stellar growth is expected to occur when a star is deeply embedded. Accretion variability is a hallmark of models of stellar growth and of observations onto later stages of protostar evolution. The JCMT-Transient survey is a pioneering sub-mm monitoring survey to probe variability onto the youngest protostars. We have detected an ongoing burst of accretion onto HOPS 373, one of the youngest and reddest protostars yet discovered. In this proposal, we request GNIRS K-band spectra of the CO overtone lines to diagnose the role of viscosity in heating of the inner disk. This would be the first K-band spectrum of such an extremely young protostar while in outburst. These observations will also allow us to place the burst in the context of FUor and EXor outbursts of young disks.
Publications using this program's data
[data][ADS] Dissecting the Different Components of the Modest Accretion Bursts of the Very Young Protostar HOPS 373