Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...126..152p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 126, no. 1, Sept. 1983, p. 152-160. Sponsorship: Deutsche Forschungsgemeinscha
Astronomy and Astrophysics
Astronomy
14
Formaldehyde, Hydrogen Clouds, Interstellar Matter, Molecular Clouds, Radio Sources (Astronomy), Taurus Constellation, Gravitational Collapse, Interstellar Extinction, Mass Distribution, Molecular Absorption, Radial Velocity, Spectral Line Width
Scientific paper
The 100-m telescope at Effelsberg is used in measuring the distribution of the 4.83 GHz absorption line of the 1(10)-1(11) rotational transition of formaldehyde H2CO and of the 1420 MHz self-absorption of cold neutral hydrogen for the globular filament of GF 16 in Taurus. A total of 128 positions on an irregular grid with spacing of approximately 4 arcmin are measured in formaldehyde. In addition, the self-absorption of cold neutral hydrogen is measured for the same area. Comparison of these data with a map of visual dust extinction from star counts on the POSS prints (Batrla et al., 1981) reveals a good correlation between dust and H2CO with r = 0.70 but no significant correlations with H I. The entire region is found to be rather quiescent, with no noticeable streaming motions. Estimates of the total mass are derived for several individual globules (D, E, C 4, C 3 + C 2).
Celnik W.
Poeppel G. L. W.
Rohlfs Kristen
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