12.2 GHz Methanol Absorption towards Sgr A

Autor:	J. B. Whiteoak, R. S. Peng
Rok vydání:	1989
Předmět:	Physics chemistry.chemical_compound Absorption spectroscopy chemistry Space and Planetary Science Astronomy and Astrophysics Astrophysics Methanol Spectrum analysis Absorption (electromagnetic radiation) Spectral line Astronomical spectroscopy
Zdroj:	Publications of the Astronomical Society of Australia. 8:204-206
ISSN:	1448-6083 1323-3580
DOI:	10.1017/s1323358000023328
Popis:	Line absorption associated with the 12.2 GHz 20 − 3-1 transition of CH3OH has been mapped towards Sgr A with the Parkes 64-m radio telescope and a 2 arcmin beam. Two concentrations are present, both offset from the continuum peak, with velocities of 18 and 46 km s-1 and line-to-continuum ratios of 0.59 and 0.30. For the higher ratio the column density is almost 1017 cm-2. The concentrations may be associated with a molecular cloud which overlies Sgr A East but lies in part behind Sgr A West.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d815aba401636188d8197aa197616ec9 https://doi.org/10.1017/s1323358000023328 Zobrazit plný text záznamu