OPTICAL SPECTROSCOPY OF BRIGHT FERMI LAT BLAZARS

Journal Article · Sat Oct 10 00:00:00 EDT 2009 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/704/1/477· OSTI ID:21367430

Shaw, Michael S; Romani, Roger W; Healey, Stephen E; Michelson, Peter F ^[1]; Cotter, Garret ^[2]; Readhead, Anthony C. S. ^[3]

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1. Department of Physics/KIPAC, Stanford University, Stanford, CA 94305 (United States)
2. Department of Astrophysics, University of Oxford, Oxford OX1 3RH (United Kingdom)
3. Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States)

We report on Hobby-Eberly Telescope and Palomar 5 m spectroscopy of recently identified gamma-ray blazars in the Fermi LAT Bright Source List. These data provide identifications for 10 newly discovered gamma-ray flat spectrum radio quasars and six new BL Lacertae (BL Lac) objects plus improved spectroscopy for six additional BL Lac objects. We substantially improve the identification completeness of the bright LAT blazars and give new redshifts and z constraints, new estimates of the black hole masses, and new measurements of the optical spectral energy distribution.

• OSTI ID: 21367430
• Journal Information: Astrophysical Journal, Vol. 704, Issue 1; Other Information: DOI: 10.1088/0004-637X/704/1/477; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BL LACERTAE OBJECTS
BLACK HOLES
ENERGY SPECTRA
GALAXIES
GAMMA RADIATION
MASS
QUASARS
RED SHIFT
SPECTROSCOPY
TELESCOPES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
RADIATIONS
SPECTRA