Molecular obseravtions of a pair of dense cores in the dark cloud L 1155.
Abstract
Attention is given to observations and star counts of the L1155/1158 high-latitude dark cloud in Cepheus. The C(O-18), HCO(+), and NH3 observations reveal that the L1155 cloud consists of two separate cloud clumps, L1155C1 and L1155C2. The maxima of the H(C-12)O(+) and NH3(1,1) radiation temperature maps are found to coincide with each other except in the front region between these clouds where a maximum is seen in the HCO(+) emission but not in NH3. The kinetic temperature of the central regions are around 10K; and the number density of H2 is 1.6 x 10 exp 4/cu cm for the L1155C1 and 6.9 x 10 exp 3/cu cm for L1155C2. The masses obtained for L1155C1 and C2 are 14 and 4 solar masses, respectively.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- September 1991
- Bibcode:
- 1991A&A...249..493H
- Keywords:
-
- Ammonia;
- Carbon Monoxide;
- Cepheus Constellation;
- Formyl Ions;
- Interstellar Matter;
- Molecular Clouds;
- Carbon Isotopes;
- Cores;
- Molecular Ions;
- Astrophysics