Infall in Protostellar Envelopes

Details Infall in Protostellar Envelopes Infall in Protostellar Envelopes

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004iaus..221...75o&link_type=abstract

Star Formation at High Angular Resolution, International Astronomical Union Symposium 221, held during the XXV General Assembly

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We summarize recent progress of observational studies of infall in protostellar envelopes, with great emphasis on results obtained using millimeter and submillimeter interferometers. Interferometric observations allow us to spatially resolve kinematical structures of protostellar envelopes, enabling us to detect infalling motions in the envelope directly. High angular resolution observations of infalling envelopes having compact disks sufficiently bright in continuum show inverse P-Cygni profiles, which are the least ambiguous evidence for infall. Observations of infalling envelopes using the Submillimeter Array (SMA) may allow us to study the innermost infalling envelopes, where infalling motions most probably transform to Keplerian motions, leading to formation of Keplerian or protoplanetary disks around protostars.

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