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VizieR Online Data Catalog: OH-streamer in SgrA at 1665 and 1667MHz (Karlsson+, 2015)
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för astronomi.
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för astronomi.
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för astronomi.
2015 (engelsk)Annet (Annet vitenskapelig)
Abstract [en]

The VLA was used to map OH line absorption at the 1665 and 1667MHz lambda doublet main lines of the 2{Pi}3/2 state towards the Sagittarius A complex. Strong OH absorption was found in the OH-streamer, the southern streamer (SS), the +20, +50, and +80km/s molecular clouds, the molecular belt, the CND, the expanding molecular ring (EMR), and the high negative velocity gas (HNVG).

Data cubes of VLA observations of the Sgr A complex at 1667- and 1665MHz OH-absorption at 7"x5" angular and 8.8km/s velocity resolution in 63 spectral channels centered at -38km/s (LSR). OH-absorption is defined as "continuum flux minus line flux". The continuum is taken as the average of 1665 and 1667 MHz maps of line free channels. Observations with the VLA in BnA and DnC arrays have been concatenated with AIPS, and data were calibrated and CLEANed with NRAO AIPS standard procedures.

(2 data files).

sted, utgiver, år, sider
Smithsonian Astrophysical Observatory (SAO) , 2015.
Emneord [en]
Milky Way, Interstellar medium, Molecular clouds
HSV kategori
Forskningsprogram
astronomi
Identifikatorer
URN: urn:nbn:se:su:diva-126753OAI: oai:DiVA.org:su-126753DiVA, id: diva2:903194
Merknad

Originally published in: Astronomy & Astrophysics, Volume 582, id. A118. 10/2015.

Tilgjengelig fra: 2016-02-15 Laget: 2016-02-15 Sist oppdatert: 2017-03-24bibliografisk kontrollert

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