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Radio Interferometric Observations of NGC 2146

Published online by Cambridge University Press:  13 May 2016

A. Tarchi ,
N. Neininger ,
A. Greve ,
U. Klein ,
S.T. Garrington ,
T. W. B. Muxlow ,
A. Pedlar  and
B.E. Glendenning
A. Tarchi
Affiliation:
Radioastronomisches Institut der Universität Bonn (D)
N. Neininger
Affiliation:
Radioastronomisches Institut der Universität Bonn (D)
A. Greve
Affiliation:
IRAM (F)
U. Klein
Affiliation:
Radioastronomisches Institut der Universität Bonn (D)
S.T. Garrington
Affiliation:
NRAL (UK)
T. W. B. Muxlow
Affiliation:
NRAL (UK)
A. Pedlar
Affiliation:
NRAL (UK)
B.E. Glendenning
Affiliation:
NRAO (USA)

Extract

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At 5 GHz, about 20 point sources were detected earlier by Glendenning & Kronberg (1986) in the central 800 pc of NGC 2146. Our observations with higher sensitivity and resolution made with MERLIN and the VLA confirms the detection of 18 sources, and resolves 7 of them (Fig.1). Additional 1.6-GHz MERLIN observations disclose 9 sources coincident in position with those detected at 5 GHz, which allows us to derive their spectral indices α51.6 (Sv ∼ να). Only 3 sources have indices (α < 0) consistent with synchrotron emission from supernova remnants or radio supernovae, while the others have very steep inverted spectra (α > 0).

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 180 - 181
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Glendenning, B.E., Kronberg, P.P., 1986, BAAS 18, 1006.Google Scholar
Tarchi, A., Neininger, N., Greve, A., et al., 2000, A&A, 358, 95.Google Scholar