Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..393..125l&link_type=abstract
The seventh astrophysical conference: Star formation, near and far. AIP Conference Proceedings, Volume 393, pp. 125-128 (1997).
Astronomy and Astrophysics
Astrophysics
Pre-Main Sequence Objects, Young Stellar Objects And Protostars, Circumstellar Shells, Clouds, And Expanding Envelopes, Circumstellar Masers, Mass Loss And Stellar Winds, Infrared
Scientific paper
We present near infrared observations of IRAS 04302+2247, a Class I protostar in the Taurus-Auriga molecular cloud complex whose equatorial plane is inclined precisely edge-on to the line of sight (i=90°+/-4°). This system displays a unique quadrupolar morphology, which had not been previously predicted in any simulations of a single protostar. We use the Monte Carlo method to tailor a model to our imaging and polarimetric data, and we explain the quadrupolar structure in terms of a dusty jet or outflow which lies perpendicular to the equatorial plane. We constrain the circumstellar structure to the form of an equatorially condensed envelope with a concave bipolar cavity. The circumstellar disk is not seen, which requires that it is physically thin. With its convenient orientation and proximity (d=140 pc) this system should yield many insights into the Class I phase of evolution.
Lucas Philip
Roche Patrick F.
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