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Ring formation by coagulation of dust aggregates in early phase of disk evolution around a protostar
Satoshi Ohashi, Hiroshi Kobayashi, Riouhei Nakatani +6
Ring structures are observed by (sub-)millimeter dust continuum emission in various circumstellar disks from early stages of Class 0 and I to late stage of Class II young stellar o…
Salt, Hot Water, and Silicon Compounds Tracing Massive Twin Disks
Kei E. I. Tanaka, Yichen Zhang, Tomoya Hirota +9
We report results of 0.05"-resolution observations toward the O-type proto-binary system IRAS 16547-4247 with the Atacama Large Millimeter/submillimeter Array (ALMA). We present dy…
Solving grain size inconsistency between ALMA polarization and VLA continuum in the Ophiuchus IRS 48 protoplanetary disk
Satoshi Ohashi, Akimasa Kataoka, Nienke Van der Marel +6
The protoplanetary disk around Ophiuchus IRS 48 shows an azimuthally asymmetric dust distribution in (sub-)millimeter observations, which is interpreted as a vortex, where millimet…
Molecular Cloud Cores with High Deuterium Fraction: Nobeyama Single-Pointing Survey
Gwanjeong Kim, Kenichi Tatematsu, Tie Liu +29
We present the results of a single-pointing survey of 207 dense cores embedded in Planck Galactic Cold Clumps distributed in five different environments ( Orionis, Orion A, B, G…
FAUST I. The hot corino at the heart of the prototypical Class I protostar L1551 IRS5
E. Bianchi, C. J. Chandler, C. Ceccarelli +63
The study of hot corinos in Solar-like protostars has been so far mostly limited to the Class 0 phase, hampering our understanding of their origin and evolution. In addition, recen…
Substructure Formation in a Protostellar Disk of L1527 IRS
Riouhei Nakatani, Hauyu Baobab Liu, Satoshi Ohashi +5
We analyze multi-frequency, high-resolution continuum data obtained by ALMA and JVLA to study detailed structure of the dust distribution in the infant disk of a Class~0/I source,…
ALMA ACA and Nobeyama observations of two Orion cores in deuterated molecular lines
Ken'ichi Tatematsu, Tie Liu, Gwanjeong Kim +25
We mapped two molecular cloud cores in the Orion A cloud with the ALMA ACA 7-m Array and with the Nobeyama 45-m radio telescope. These cores have bright ND emission in sing…