Scoville, N. Z. and Solomon, P. M. (1973) Survey of Molecular Lines Near the Galactic Center. III. 6-Centimeter Formaldehyde Absorption at b = -2' from ℓ = 2°.0 to ℓ = 4°.5 and at b = -12' from ℓ = 358°.5 to ℓ = 2°.0. Astrophysical Journal, 180 . pp. 55-59. ISSN 0004-637X. doi:10.1086/151941. https://resolver.caltech.edu/CaltechAUTHORS:20190329-150046925
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Abstract
Our initial survey in the 6-cm transition of formaldehyde near the galactic plane (b = -2') has been extended out to ℓ = 4°.5, and a parallel strip at b = -12' has been mapped between ℓ = 358°.5 and 2°.0. These new observations suggest that the group of dense, low-positive-velocity clouds does not continue beyond ℓ = 2° and that the negative-velocity clouds are part of an arm structure within 300 pc of the galactic center and having a total mass of ~10^6 M_⊙. We also note the existence of molecular gas at ℓ = 2°.3 with a velocity of 240 km s^(-1) (similar to that of H I in the rotating nuclear disk).
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| Additional Information: | © 1973. The American Astronomical Society. | |||||||||
| Subject Keywords: | molecules - galactic structure - galactic nuclei | |||||||||
| DOI: | 10.1086/151941 | |||||||||
| Record Number: | CaltechAUTHORS:20190329-150046925 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190329-150046925 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 94299 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 29 Mar 2019 22:53 | |||||||||
| Last Modified: | 16 Nov 2021 17:04 |
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