STIS spectroscopy of the emission line gas in the nuclei of nearby FR-I galaxies

Abstract

We present the results of the analysis of a set of medium resolution spectra, obtained by the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope, of the emission line gas present in the nuclei of a complete sample of 21 nearby, early-type galaxies with radio jets (the UGC FR-I Sample). For each galaxy nucleus we present spectroscopic data in the region of H-alpha and the dervived kinematics. We find that in 67% of the nuclei the gas appears to be rotating and, with one exception, the cases where rotation is not seen are either face on or have complex central morphologies. We find that in 62% of the nuclei the fit to the central spectrum is improved by the inclusion of a broad component. The broad components have a mean velocity dispersion of 1349 +/- 345 km\s and are redshifted from the narrow line components (assuming an origin in H-alpha) by 486 +/- 443 km\s.

arXiv comment119 pages, 26 figures, ApJS Accepted, version with full figures available at http://www.astro.columbia.edu/~jake/pub/fr1datapaper.pdf

References in corpus (18)

• A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies
• A Relationship Between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
• The slope of the black-hole mass versus velocity dispersion correlation
• The M(BH)-Sigma Relation for Supermassive Black Holes
• A Search for "Dwarf" Seyfert Nuclei. IV. Nuclei with Broad H-alpha Emission
• The supermassive black hole of M87 and the kinematics of its associated gaseous disk
• Dust in the Cores of Early-Type Galaxies
• Evidence for a 3 x 10^8 solar mass black hole in NGC 7052 from HST observations of the nuclear gas disk
• Dusty Nuclear Disks and Filaments in Early Type Galaxies
• Evidence for a Supermassive Black Hole in the S0 Galaxy NGC 3245
• SuperMassive Black Holes in Bulges
• Kinematics of the Nuclear Ionized Gas in the Radio Galaxy M84 (NGC 4374)
• Nuclear Disks of Gas and Dust in Early Type Galaxies and the Hunt for Massive Black Holes: Hubble Space Telescope Observations of NGC 6251
• HST observations of nearby radio-loud early-type galaxies
• The black hole in IC 1459 from HST observations of the ionized gas disk
• Core Radio and Optical Emission in Nearby FR I Radio Galaxies
• VLBA Observations Of A Sample Of Nearby FR I Radio Galaxies
• Gas Kinematics and the Black Hole Mass at the Center of the Radio Galaxy NGC 4335

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