Direct Evidence from Spitzer for a Low-Luminosity AGN at the Center of the Elliptical Galaxy NGC 315
View/ Open
Issue Date
2007-12-20Author
Gu, Q. S.
Huang, J. S.
Wilson, Graham Wallace
Fazio, G. G.
Publisher
American Astronomical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
We present Spitzer Space Telescope InfraRed Array Camera (IRAC) and Multiband Imaging Photometer (MIPS) observations of the elliptical galaxy NGC 315. After removal of the host galaxy's stellar emission, we detected for the first time an infrared-red nucleus in NGC 315. We measured the spectral energy distribution (SED) for this active nucleus with a wavelength range from radio to X-ray, and obtained a bolometric luminosity of Lbol ≈ 1.9 × 1043 ergs s−1, corresponding to an extremely low Eddington ratio L/LEdd of 4.97 × 10−4. Our results confirm that the physical nature of the nucleus of NGC 315 is a low-luminosity AGN, consistent with recent optical and Chandra X-ray observations.
Description
This is the publisher's version, also available electronically from http://iopscience.iop.org/1538-4357/671/2/L105/.
Collections
Citation
Gu, Q.-S. et al. (2007). "Direct Evidence from Spitzer for a Low-Luminosity AGN at the Center of the Elliptical Galaxy NGC 315 ." http://www.dx.doi.org/10.1086/525018
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.