Optically thick infrared CO emission in WL 16

Details Optically thick infrared CO emission in WL 16 Optically thick infrared CO emission in WL 16

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...344..799t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 344, Sept. 15, 1989, p. 799-804.

Astronomy and Astrophysics

Astronomy

11

Carbon Monoxide, Emission Spectra, Infrared Sources (Astronomy), Star Formation, Interstellar Gas, Optical Thickness

Scientific paper

Reanalysis of the NIR spectrum of the star-formation object WL 16 indicates that the observed infrared CO emission has a high optical depth, creating a CO emission continuum feature. A new extinction value A(v) = 40 places the Brackett gamma emission within the normal range for low-luminosity line excess sources. The observations are consistent with a spherical cooling outflow with the infrared CO and hydrogen emission arising from physically separate regions. Other geometries are not excluded by the observations.

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