Molecular and infrared observations of the conical reflection nebula 1548C27

Details Molecular and infrared observations of the conical reflection nebula 1548C27 Molecular and infrared observations of the conical reflection nebula 1548C27

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.259..401d&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 259, no. 3, p. 401-409.

Astronomy and Astrophysics

Astronomy

7

Carbon Monoxide, Infrared Imagery, Molecular Clouds, Molecular Spectra, Reflection Nebulae, Infrared Astronomy, Interstellar Matter

Scientific paper

(C-12)O J = 2-1 and 3-2 and IR observations of the region around the optical conical reflection nebula and jet source 1548C27 are presented. The CO data show that this source lies on the edge of an LMC. Wings of emission are evident in the higher transition, and the morphology indicates that this gas lies at the interface between the reflection nebula and the molecular cloud. A dynamical distance of 2.4 kpc is derived from the cloud velocity, indicating that the source is considerably more distant than previously thought. A source mass and luminosity consistent with an Ae/Be-type star is inferred. The total mass of the high-velocity molecular gas is about 0.18 solar mass, making this a low-mass outflow. Under the assumption of a canonical wind momentum driven flow, a stellar mass-loss rate of about 1 x 10 exp -7 solar mass/yr is obtained. Near-IR imaging photography indicates that 1548C27 is variable over time scales of a few years and is considerably redder than in the previous observation.

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