Astronomy and Astrophysics – Astronomy
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...499..294h&link_type=abstract
Astrophysical Journal v.499, p.294
Astronomy and Astrophysics
Astronomy
7
Stars: Circumstellar Matter, Infrared: Ism: Lines And Bands, Ism: Individual Ngc Number: Ngc 1333, Stars: Individual Alphanumeric: Ssv 13, Stars: Pre-Main-Sequence
Scientific paper
We report on a variety of observations of SSV 13 in NGC 1333 in the far-infrared. We have obtained photometry of the object at a number of times between 1981 and 1995, spanning the time over which the object brightened by about 1 mag in the near-infrared. In addition, we report on diffraction-limited scanning at 47 and 95 mu m. We find that the source has brightened by a factor of 1.5-2 in the far-infrared over the period of our observations, implying that the object has undergone a true luminosity increase since most of the luminosity of this object is emitted in the far-infrared. This also implies that the far-infrared emission is almost certainly associated with SSV 13, rather than the VLA source found recently about 7" southwest of SSV 13. Our spatial observations and the overall energy distribution of SSV 13 can be modeled successfully with a spherically symmetric dust distribution with a dust optical depth of 0.3 at 100 mu m and a density gradient of r-1.2+/-0.2.
Colome Cecilia
di Francesco James
Harvey Paul Michael
Smith Beverly J.
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