Far IR and CO (J=0-1) large scale emissions of the Taurus complex.

Details Far IR and CO (J=0-1) large scale emissions of the Taurus complex. Far IR and CO (J=0-1) large scale emissions of the Taurus complex.

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26as..111..483a&link_type=abstract

Astronomy and Astrophysics Supplement, v.111, p.483

Astronomy and Astrophysics

Astrophysics

11

Methods: Data Analysis, Ism: Clouds, Ism: Molecules, Infrared: Ism: Continuum, Radio Lines: Ism, Ism: Taurus Clouds

Scientific paper

IRAS images at full resolution and four wavelengths (12, 25, 60 and 100μm) of a large region around the Taurus complex are presented, the light unrelated to the clouds removed with an uncertainty estimated to 0.1, 0.15, 0.3 and 0.8MJy/sr respectively. These images are basic tools for multiple analysis and comparisons with other data. The efficiency of the 100μm and CO (J=1-0) emissions to trace matter are then compared using the large scale (750 square degrees), regularly sampled and unbiased survey of the CO (J=1-0) emission of the Perseus, Taurus and Auriga region of Ungerechts & Thaddeus (1987) and a resolution degraded 100μm emission map. The major large scale features visible on the CO map are visible on the 100μm map, with a lower contrast because these features are surrounded with pixels containing 100μm emission but no detected CO emission. However the pixel to pixel correlation between the two emissions is poor, which illustrates the not common dependence of the local density structure on the CO and 100μm emissions. Anyway, this comparison shows that at least 70% of the matter associated with the complex traced by the 100μm emission is traced by the CO (J=0-1) emission observed with an angular resolution of 0.5deg and a sensitivity limit of 0.5Kkm/s.

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