Large-scale Mapping of the Ophiuchi Region by SWAS
Abstract
Using FCRAO, We have mapped a two square degree region around rho Ophiuchi A and L1689 in the J = 1-0 transitions of CO, 13CO, and C18O. In CO and 13CO, the beam-sampled maps are comprised of close to 30,000 spectra for each tracer. The C18O maps are centered on denser cores with a total of 7631 spectra.
The center and south-eastern edge of rho Ophiuchi A show enhanced heating from both embedded sources and outside stars. The central portion has a wide outflow, detected in both 13CO and C18O. At the velocity of the red (stronger) lobe of this outflow, a 4.2 sigma O2 emission line has been detected by SWAS. The same regions have been mapped in the 492 GHz fine structure line of CI. The map is Nyquist sampled according to the 4.2' (averaged) beam size of SWAS. CI and 13CO maps show striking correlations, which suggests cloud structures smaller than the beam sizes. These data are the most comprehensive molecular maps of these closeby star forming regions since Loren (1989).- Publication:
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SFChem 2002: Chemistry as a Diagnostic of Star Formation
- Pub Date:
- 2003
- DOI:
- 10.48550/arXiv.astro-ph/0301082
- arXiv:
- arXiv:astro-ph/0301082
- Bibcode:
- 2003cdsf.conf..347L
- Keywords:
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- Astrophysics
- E-Print:
- 3 pages, 2 figures, Star Formation Chemistry meeting in Waterloo, Canada