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| Paper: |
Keplerian and Infall Motions Around the Late-Phase
Protostar TMC-1A |
| Volume: |
499, Revolution in Astronomy with ALMA: The Third Year |
| Page: |
285 |
| Authors: |
Aso, Y.; Ohashi, N.; Saigo, K.; Takakuwa, S.; Yen, H.-W.; Koyamatsu, S.; Aikawa, Y.; Machida, M. N.; Saito, M.; Tomida, K.; Tomida, K. |
| Abstract: |
We have observed the protostar TMC-1A (Class I, Tbol = 118 K) using ALMA Cycle 0 in 1.3-mm dust continuum, 12CO (J = 2–1), and C18O (J = 2–1) emission. Our results suggest that TMC-1A has a Keplerian disk (Rkep = 100 AU, M* = 0.68 M☉) and an envelope showing an infalling velocity 0.3 times as large as the free fall velocity. |
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