Spitzer Detection of a Very Low-Luminosity Infrared Source Embedded in the Taurus L1521F ``Prestellar'' Core

Details Spitzer Detection of a Very Low-Luminosity Infrared Source Embedded in the Taurus L1521F ``Prestellar'' Core Spitzer Detection of a Very Low-Luminosity Infrared Source Embedded in the Taurus L1521F ``Prestellar'' Core

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20716501t&link_type=abstract

American Astronomical Society Meeting 207, #165.01; Bulletin of the American Astronomical Society, Vol. 37, p.1424

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the detection of a low-luminosity 0.02 Lo infrared source by the Spitzer Space Telescope in the L1521F ``prestellar core". The low-luminosity of the embedded class 0-like object suggests it may represent the early accretion phase of cloud-collapse, shortly after a hydrostatic object has formed but younger than the time scale typical of class 0 sources. Observations of C18O(2-1) emission by the James Clerk Maxwell Telescope (JCMT) indicate a compact ( ˜ 20'') gaseous core centered on the 24 micron infrared position. The additional detection of HCN(3-2) emission at 265 GHz signifies that both high density (n ˜ 106 cm-3) and warm gas (T > 25 K) are present, further indicating that the infrared source is embedded within the dense cloud core.

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