Dynamically infalling envelopes around low-mass protostar candidates

Details Dynamically infalling envelopes around low-mass protostar candidates Dynamically infalling envelopes around low-mass protostar candidates

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..393...93o&link_type=abstract

The seventh astrophysical conference: Star formation, near and far. AIP Conference Proceedings, Volume 393, pp. 93-96 (1997).

Astronomy and Astrophysics

Astrophysics

1

Pre-Main Sequence Objects, Young Stellar Objects And Protostars, Accretion And Accretion Disks, Star Formation

Scientific paper

Interferometric observations of two protostar candidates, L1551 IRS5 and IRAS 04368+2557(L1527), in Taurus have directly identified dynamically infalling motions in their circumstellar envelopes. The observed infalling envelopes have disklike structures, which are perpendicular to the associated outflows, with a thousand AU scale. In addition to infall, rotation was detected in the envelope around IRAS 04368+2557. This rotation is 5 times slower than the infall at 2000 AU in radius, suggesting that the envelope around IRAS 04368+2557 is not rotationally supported. Mass infall rates were estimated to be 10-5 Msolar yr-1 for L1551 IRS5, and 10-6 Msolar yr-1 for IRAS 04368+2557.

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