A molecular study of the dark clouds L 1506 and L 1529 in Taurus

Astronomy and Astrophysics – Astrophysics

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Astronomical Spectroscopy, Emission Spectra, Interstellar Matter, Molecular Clouds, Taurus Constellation, Abundance, Carbon Monoxide, Photochemical Reactions, Spectral Resolution

Scientific paper

The authors have surveyed at moderate resolution (5arcmin) the 13CO (J = 1-0) emission of the Taurus dark clouds L 1529 and L 1506. The data together with the visual extinction Av derived from star counts, give two values of the 13CO abundance. The masses of L 1529 and L 1506 are found to be 700 and 460 M_sun; respectively. The mean density is 400 cm-3 for both clouds. The 13CO abundance show variations from place to place across the whole Taurus-Auriga-Perseus complex. The velocity structure of the region is found to be very confused. The gravitational stability of the clouds is examined.

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