Infrared Spectroscopy of Nearby Radio Active Elliptical Galaxies

Creators: Mould, Jeremy; Reynolds, Tristan; Readhead, Tony; Floyd, David; Jannuzi, Buell T.; Cotter, Garret; Ferrarese, Laura; Matthews, Keith; Atlee, David; Brown, Michael J. I.

Abstract

In preparation for a study of their circumnuclear gas we have surveyed 60% of a complete sample of elliptical galaxies within 75 Mpc that are radio sources. Some 20% of our nuclear spectra have infrared emission lines, mostly Paschen lines, Brackett γ, and [Fe II]. We consider the influence of radio power and black hole mass in relation to the spectra. Access to the spectra is provided here as a community resource.

Additional Information

© 2012 American Astronomical Society. Received 2012 June 6; accepted 2012 September 26; published 2012 November 1. Thanks go to Eilat Glickman for sharing her observing expertise at the Palomar 200 inch telescope and her copy of the Triplespec Spextool IDL program. This paper has also made use of IRAF, which is distributed by NOAO. NOAO is operated by AURA under a cooperative agreement with NSF. The Caltech-Swinburne CollaborativeAgreement allows the first author access to the Hale and Keck telescopes. Survey astronomy is supported by the Australian Research Council through CAASTRO.14 The Centre for All-sky Astrophysics is an Australian Research Council Centre of Excellence, funded by grant CE11001020. G.C. acknowledges support from STFC grants ST/H002456/1 and ST/I003673/1. M.B. acknowledges the support from the Australian Research Council via Future Fellowship FT100100280 and Discovery Project DP110102174. We thank an anonymous referee for comments which improved the paper.

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