Year: 2014
Type: article
Abstract: We have obtained WIYN and SOAR i ' images of BL Lacertae objects and used these to detect or constrain the flux of the host galaxy. Under common standard candle assumptions, these data provide estimates of, or lower bounds on, the redshift. Our targets are a set of flat-spectrum radio counterparts of high flux Fermi Large Area Telescope sources, with sensitive spectral observations showing them to be continuum-dominated BL Lac objects. In this sample, 5 of 11 BL Lac objects yielded significant host detections, with standard candle redshifts z = 0.13–0.58. Our estimates and lower bounds are generally in agreement with other redshifts estimates, although our z = 0.374 estimate for J0543−5532 implies a significantly sub-luminous host.
Source: The Astrophysical Journal
Authors: Matt Stadnik, Roger W. Romani
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Awards: WE PROPOSE A LARGE (3-YEAR) PROGRAM TO CONTINUE OUR CURRENT 1-YEAR APPROVED PROJECT OF OPTICALLY MONITORING THE 140 BRIGHTEST LAT-DETECTED BLAZARS AC, WE PROPOSE AN INTERLEAVED PROGRAM OF 4M IMAGING OF THREE LAT SOURCE TYPES. DEEP I-BAND IMAGES OF LAT BL LACS LACKING REDSHIFTS WILL BE USED TO DETECT
OpenAlex ID: W1566898327