PRODIGE – envelope to disk with NOEMA
نویسندگان
چکیده
Context. In the past few years, there has been a rise in detection of streamers, asymmetric flows material directed toward protostellar disk with from outside star’s natal core. It is unclear how they affect process mass accretion, particular beyond Class 0 phase. Aims. We investigate gas kinematics around Per-emb-50, I source crowded star-forming region NGC 1333. Our goal to study infall proceeds envelope scales this source. Methods. use new NOEMA 1.3 mm observations, including C 18 O, H 2 CO, and SO, context PRODIGE MPG – IRAM program, probe core structures Per-emb-50. Results. discover streamer delivering Per-emb-50 CO O emission. The streamer’s emission can be well described by analytic solutions for an infalling parcel along streamline conserved angular momentum, both image plane line-of-sight velocities. mean rate × 10 ?6 M ? yr? 1 , five ten times higher than current accretion protostar. SO reveal motions inner envelope, additional Furthermore, presence could mark impact zone material. Conclusions. delivers sufficient sustain might produce burst, which would explain protostar’s high luminosity respect other sources. results highlight importance late evolution: streamers provide significant amount stellar after
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ژورنال
عنوان ژورنال: Astronomy and Astrophysics
سال: 2022
ISSN: ['0004-6361', '1432-0746']
DOI: https://doi.org/10.1051/0004-6361/202243310