SIMBAD references

1995A&A...295..755T - Astronomy and Astrophysics, volume 295, 755-766 (1995/3-3)

L 1780: a cometary globule associated with Loop I?


Abstract (from CDS):

12CO, 13CO and C18O J=1->0 observations of the L1778/L 1780 high latitude (b=36.7deg) dark cloud have been carried out using the Gornergrat 3m and SEST 15m telescopes. The observations revealed a cometary cloud structure: a dense core asymmetrically surrounded by a diffuse outer layer. The mass of the cloud calculated from the CO observations is 21.6M. The compact 13CO core has a mass of 8.3M and is found to be in virial equilibrium. The CO data have been compared to previous optical, HI, and IRAS observations. We suggest that the structure and the morphology of L 1780 have been influenced by two large scale environmental effects: (1) the asymmetric interstellar UV radiation field and (2) a shock front, both caused by the high mass stars of the Sco - Cen OB association.

Abstract Copyright:

Journal keyword(s): ISM: clouds - ISM: molecules - ISM: objects: individual: L 1780 (LDN 1780) - ISM: Loop I - radio lines: ISM

Simbad objects: 10

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