Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...274..415g&link_type=abstract
Astronomy and Astrophysics, Vol. 274, NO. 2/JUL(II), P. 415, 1993
Astronomy and Astrophysics
Astrophysics
14
Interstellar Medium: Clouds, Interstellar Medium: Individual Objects: Lupus Clouds, Interstellar Medium: Kinematics And Dynamics Of, Radio Lines: Molecular, Interstellar Medium: Molecules
Scientific paper
An extensive mapping of CO (J = 1-0) emission from the Lupus 2 dark clouds has been made. Complementary observations in CO (J = 2-1) and 13CO (J = 1-0) over the central main cloud were obtained. The molecular gas motions are small over the entire cloud complex but asymmetric line profiles exist possibly due to the presence of two velocity components separated by about 1km s `in the main cloud. The relative intensity of these components changes gradually over the main cloud. We have found no evidence for any molecular outflows in the region. In particular the molecular gas is quiescent over the extremely active T Tauri star RU Lupi with its associated imbedded infrared sources and the Herbig-Haro object HH 55 in the main cloud. From this certain constraints can be put on the mass loss from the star. We derive a mass of about 10 Msun for the main cloud and estimate that a similar mass resides in two filaments northeast and west of this core in addition to two isolated cloudlets. We also report on a few CO observations made in the Lupus 3 dark clouds where a complex velocity pattern was found at one location.
Gahm Goesta F.
Johansson Lars E. B.
Liseau Rene
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