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Optical Properties of Radio-Selected Narrow Line Seyfert 1 Galaxies

Journal Article · · The Astronomical Journal , vol. 131, no. 4, April 1, 2006, pp. 1948-1960
DOI:https://doi.org/10.1086/500825· OSTI ID:898447
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We present results from the analysis of the optical spectra of 47 radio-selected narrow-line Seyfert 1 galaxies (NLS1s). These objects are a subset of the First Bright Quasar Survey (FBQS) and were initially detected at 20 cm (flux density limit {approx} 1 mJy) in the VLA FIRST Survey. We run Spearman rank correlation tests on several sets of parameters and conclude that, except for their radio properties, radio-selected NLS1 galaxies do not exhibit significant differences from traditional NLS1 galaxies. Our results are also in agreement with previous studies suggesting that NLS1 galaxies have small black hole masses that are accreting very close to the Eddington rate. We have found 16 new radio-loud NLS1 galaxies, which increases the number of known radio-loud NLS1 galaxies by a factor of {approx} 5.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
898447
Report Number(s):
UCRL-JRNL-219392
Journal Information:
The Astronomical Journal , vol. 131, no. 4, April 1, 2006, pp. 1948-1960, Journal Name: The Astronomical Journal , vol. 131, no. 4, April 1, 2006, pp. 1948-1960
Country of Publication:
United States
Language:
English

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS
BLACK HOLES
GALAXIES
OPTICAL PROPERTIES
QUASARS
SPECTRA