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Protostellar Evolution in Serpens Main: Possible Origin of Disk-Size Diversity
Yusuke Aso, Naomi Hirano, Yuri Aikawa +6
We have observed the submillimeter continuum condensations SMM2, SMM4, SMM9, and SMM11 in the star forming cluster Serpens Main using the Atacama Large Millimeter/submillimeter Arr…
The Infall Motion in the Low-Mass Protostellar Binary NGC 1333 IRAS 4A1/4A2
Yu-Nung Su, Sheng-Yuan Liu, Zhi-Yun Li +4
We report ALMA observations of NGC 1333 IRAS 4A, a young low-mass protostellar binary, referred as 4A1 and 4A2. With multiple HCO transitions and HNC (43) observed at a reso…
HL Tau disk in HCO+ (3-2) and (1-0) with ALMA: gas density, temperature, gap, and one-arm spiral
Hsi-Wei Yen, Pin-Gao Gu, Naomi Hirano +4
We present our observational results of the 1.1 mm continuum and the HCO+ (3-2) line in HL Tau at angular resolutions of 0.1" obtained with ALMA and our data analysis of the 2.9 mm…
The first bird's-eye view of a gravitationally unstable accretion disk in high-mass star formation
Kazuhito Motogi, Tomoya Hirota, Masahiro N. Machida +4
We report on the first bird's-eye view of the innermost accretion disk around the high-mass protostellar object G353.273+0.641, taken by Atacama Large Millimter/submillimeter Array…
Implications of a hot atmosphere/corino from ALMA observations towards NGC1333 IRAS 4A1
Dipen Sahu, Sheng-Yuan Liu, Yu-Nung Su +4
We report high angular resolution observations of NGC1333 IRAS4A, a protostellar binary including A1 and A2, at 0.84 mm with the Atacama Large Millimeter/submillimeter Array. From…
Signs of outflow feedback from a nearby young stellar object on the protostellar envelope around HL Tau
Hsi-Wei Yen, Shigehisa Takakuwa, Pin-Gao Gu +5
HL Tau is a Class I-II protostar embedded in an infalling and rotating envelope and possibly associated with a planet forming disk, and it is co-located in a 0.1 pc molecular cloud…