VizieR Online Data Catalog: Galactic interstellar ratio 18O/17O. I.
Abstract
The C18O and C17O J=1-0 lines were observed from July 1, with the Institut de Radio Astronomie Millimetrique (IRAM) 30m single dish telescope, at the Pico Veleta Observatory (Granada, Spain). The center frequencies were set at 109.782182 and 112.359277GHz for the C18O and C17O, respectively, with a corresponding beam size of ~23". With the IRAM 30m we observed 50 sources of our sample. The parameters of their observations are summarized in Table 1.
Other observations of the J=1-0 lines of C18O and C17O were also carried out using the Arizona Radio Observatory (ARO) 12m telescope on Kitt Peak, Tuscon, AZ, USA, with a corresponding beam size of ~64". Observations were performed remotely from Guangzhou University, China, in 2016 November and December, 2017 January, November, and December, and 2018 May and December. Table 1 presents the parameters of the observational results of ARO for the sample of 260 sources, including 24 sources observed by both IRAM 30m and ARO 12m telescopes. (3 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- September 2020
- DOI:
- 10.26093/cds/vizier.22490006
- Bibcode:
- 2020yCat..22490006Z
- Keywords:
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- Carbon monoxide;
- Molecular clouds;
- Milky Way