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Molecular-Cloud-Scale Chemical Composition III: Constraints of Average Physical Properties through Chemical Models
Nanase Harada, Yuri Nishimura, Yoshimasa Watanabe +4
It is important to understand the origin of molecular line intensities and chemical composition in the molecular-cloud scale in the Galactic sources because it serves as a benchmar…
The Co-evolution of Disk and Star in Embedded Stages: The Case of the Very Low-mass Protostar
Yuki Okoda, Yoko Oya, Nami Sakai +4
We have observed the CCH (N=3-2, J=7/2-5/2, F=4-3 and 3-2) and SO (6_7-5_6) emission at a 0"2 angular resolution toward the low-mass Class 0 protostellar source IRAS 15398-3359 wit…
Rotation in the NGC 1333 IRAS 4C Outflow
Yichen Zhang, Aya E. Higuchi, Nami Sakai +8
We report molecular line observations of the NGC 1333 IRAS 4C outflow in the Perseus Molecular Cloud with the Atacama Large Millimeter/Submillimeter Array. The CCH and CS emission…
Depletion of 15N in the center of L1544: Early transition from atomic to molecular nitrogen?
Kenji Furuya, Yoshimasa Watanabe, Takeshi Sakai +2
We performed sensitive observations of the N15ND+(1-0) and 15NND+(1-0) lines toward the prestellar core L1544 using the IRAM 30m telescope. The lines are not detected down to 3 sig…
A multiline study of a high-mass young stellar object in the Small Magellanic Cloud with ALMA: The detection of methanol gas at 0.2 solar metallicity
Takashi Shimonishi, Yoshimasa Watanabe, Yuri Nishimura +5
We report the results of subparsec-scale submillimeter observations towards an embedded high-mass young stellar object in the Small Magellanic Cloud (SMC) with ALMA. Complementary…
Sub-arcsecond Kinematic Structure of the Outflow in the Vicinity of the Protostar in L483
Yoko Oya, Nami Sakai, Yoshimasa Watanabe +4
The bipolar outflow associated with the Class 0 low-mass protostellar source (IRAS 18148-0440) in L483 has been studied in the CCH and CS line emission at 245 and 262 GHz, respecti…
Chemical survey toward young stellar objects in the Perseus molecular cloud complex
Aya E. Higuchi, Nami Sakai, Yoshimasa Watanabe +12
Chemical diversity of the gas in low-mass protostellar cores is widely recognized. In order to explore its origin, a survey of chemical composition toward 36 Class 0/I protostars i…
ALMA [CI] observations toward the central region of a Seyfert galaxy NGC 613
Yusuke Miyamoto, Masumichi Seta, Naomasa Nakai +3
We report ALMA observations of [CI](), CO, and CO () toward the central region of a nearby Seyfert galaxy NGC 613. The very high resolutions of $0…
Chemical and Physical Picture of IRAS 16293-2422 Source B at a Sub-arcsecond Scale Studied with ALMA
Yoko Oya, Kana Moriwaki, Shusuke Onishi +7
We have analyzed the OCS, HCS, CHOH, and HCOOCH data observed toward the low-mass protostar IRAS 16293--2422 Source B at a sub-arcsecond resolution with ALMA. A clear c…