Near-Infrared Line and Radio Continuum Imaging of The Circinus Galaxy

Details Near-Infrared Line and Radio Continuum Imaging of The Circinus Galaxy Near-Infrared Line and Radio Continuum Imaging of The Circinus Galaxy

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997oxun.reptq....d&link_type=abstract

Technical Report, OUAST/97/17

Astronomy and Astrophysics

Astronomy

Infrared Radiation, Radio Jets (Astronomy), Imaging Techniques, Galaxies, Velocity Distribution, Continuums, Hydrogen, Stellar Mass, Star Formation Rate, Toruses, Self Absorption

Scientific paper

We have imaged the Circinus Galaxy in the near-infrared [Fe II] 1.64 micrometer and H2 2.12 micrometer lines, and derived velocity maps for the emission. The morphologies are strikingly different, but the velocity maps are very similar and consistent with simple rotation. We also present new radio continuum maps at 3 cm and 6 cm which show a partially resolved nucleus with a flat spectral index. This suggests free-free absorption rather than self absorption in a compact source. There is some evidence of radio jets close to the nucleus. The H2 emission, rather than the [Fe II] as in NGC 1068, is extended along the jet axis and may be excited by jet induced shocks either in a low density medium or with rather slow shock speeds (v less than or approx. equal to 50 km/s). We find that the star-formation in the ring 10 arcsec from the nucleus began less than a few x 107 years ago. Nearer the AGN, perhaps in and around the inferred torus, we detect extended [Fe 2] emission (including one prominent peak about 2 arcsec North of the AGN which could be due to a single young remnant) from which we derive a modest star-formation rate of less than 1 solar mass/yr.

Affiliated with

Also associated with

No associations

Rating

Near-Infrared Line and Radio Continuum Imaging of The Circinus Galaxy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Near-Infrared Line and Radio Continuum Imaging of The Circinus Galaxy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near-Infrared Line and Radio Continuum Imaging of The Circinus Galaxy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1810869