CO and NH3 detection of the cone in NGC 2264

Details CO and NH3 detection of the cone in NGC 2264 CO and NH3 detection of the cone in NGC 2264

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...181..112p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 181, no. 1, July 1987, p. 112-118.

Astronomy and Astrophysics

Astrophysics

1

Ammonia, Astronomical Spectroscopy, Carbon Monoxide, Interstellar Matter, Radio Spectra, Reflection Nebulae, Astronomical Models, Density Distribution, Infrared Spectra, Mass Distribution, Molecular Spectra

Scientific paper

The authors have detected in CO(J = 1-0) and in NH3(1, 1), the Bok globule in the cone head of NGC 2264 which has escaped so far the previous radio observations of this region. The authors also have evidence for the detection of the whole cone from a large scale map of the region. With the help of a simple LTE model, they have derived an estimate of the density (≡104molecules cm-3), mass (≡16 M_sun;) and kinetic temperature (≡20K) of the globule. The fact that its LSR velocity, ≡5 km s-1, is close to the velocity of one of the background nebula features supports the idea that the cone is related to the reflection nebula. Its relatively high kinetic temperature can also be explained by the vicinity of the well-known infrared source embedded in the nebula.

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