Ionized gas in the Sgr A complex -- VLA observations of H168α and H270α recombination lines
| dc.additional | 1999 Astronomical Society of the Pacific | en |
| dc.contributor.author | Anantharamaiah, K R | |
| dc.contributor.author | Pedlar, A | |
| dc.contributor.author | Goss, W M | |
| dc.date.accessioned | 2007-05-25T09:28:23Z | |
| dc.date.available | 2007-05-25T09:28:23Z | |
| dc.date.issued | 1999 | |
| dc.description | Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations). | en |
| dc.description.abstract | Radio recombination lines at λ = 20 cm reveal the presence of an extended component of ionized gas of lower density (~100 cm3) in the Sgr A complex. This component extends well beyond the thermal `mini-spiral' Sgr A-West which seem to be embedded in it. The low-density component is present over the entire extent of Sgr A East and possibly beyond and it is responsible for the turnover in the spectrum of Sgr A East and the halo observed by Pedlar et al (1989) at λ = 90 cm. The radial velocity of the extended ionized gas ranges from +50 kms- to --200 kms- with minima of emission near --50 and --150 kms. The total mass of the low-density component is estimated to be ~104 Modot. A possible extended feature at a high velocity of 470 kms- is also detected, but needs further observations to confirm it. | en |
| dc.format.extent | 993912 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | ASP Conference Series, 1999, Vol.186, p422 | en |
| dc.identifier.isbn | 1-58381-012-9 | |
| dc.identifier.uri | http://hdl.handle.net/2289/2457 | |
| dc.language.iso | en | en |
| dc.publisher | Astronomical Society of the Pacific | en |
| dc.relation.uri | http://adsabs.harvard.edu/cgi-bin/bib_query?1999ASPC..186..422A | en |
| dc.relation.uri | http://arxiv.org/abs/astro-ph/9903072 | en |
| dc.rights | The Central Parsecs of the Galaxy, ASP Conference Series, Vol. 186. Eds. Heino Falcke, Angela Cotera, Wolfgang J. Duschl, Fulvio Melia, and Marcia J. Rieke, 1999. | en |
| dc.title | Ionized gas in the Sgr A complex -- VLA observations of H168α and H270α recombination lines | en |
| dc.type | Article | en |