Physical and chemical conditions in Perseus globules from NH3 and HC3N observations

Details Physical and chemical conditions in Perseus globules from NH3 and HC3N observations Physical and chemical conditions in Perseus globules from NH3 and HC3N observations

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...168..262b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 168, no. 1-2, Nov. 1986, p. 262-270.

Astronomy and Astrophysics

Astrophysics

46

Ammonia, Cyano Compounds, Dark Matter, Milky Way Galaxy, Molecular Clouds, Abundance, Astronomical Spectroscopy, Emission Spectra

Scientific paper

Ammonia observations of the globules L 1448 and L 1455 in Perseus show that their dense cores are fragmented in clumps of 1 - 20 M_sun;, which have central densities ≈ a few 104cm-3 and temperatures ≈12K. HC3N observations, when compared to the NH3 observations, show that the ratio R = [NH3]/[HC3N] in the Perseus globules (L 1448, L 1455, and B 1) is ≈80 - 90, i.e. about 10 times larger than in the Taurus cloudlets (TMC 1, HCL 2-A, B, C,...). The Perseus globules appear active in forming low mass stars.

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