Access to Astronomical Catalogues

← Click to display the menu
J/AJ/131/1948     Narrow line Seyfert 1 galaxies in the FBQS     (Whalen+, 2006)

Optical properties of radio-selected narrow-line Seyfert 1 galaxies. Whalen D.J., Laurent-Muehleisen S.A., Moran E.C., Becker R.H. <Astron. J., 131, 1948-1960 (2006)> =2006AJ....131.1948W
ADC_Keywords: Galaxies, Seyfert ; QSOs ; Spectroscopy Keywords: galaxies: Seyfert - quasars: emission lines Abstract: We present results from the analysis of the optical spectra of 47 radio-selected narrow-line Seyfert 1 (NLS1) galaxies. These objects are a subset of the First Bright Quasar Survey (Cat. J/AJ/112/407) and were initially detected at 20cm (flux density limit 1Jy) in the VLA FIRST Survey. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 63 62 Narrow-line Seyfert 1 data
See also: J/AJ/112/407 : The FIRST bright QSO survey (Gregg+, 1996) J/ApJS/126/133 : The FIRST bright quasar survey. II. (White+, 2000) J/ApJS/135/227 : The FIRST bright quasar survey. III. (Becker+, 2001) VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 9 A9 --- FBQS Source identification (HHMM+DDMM) (FBQS JHHMM+DDMM in Simbad) (1) 11- 15 F5.3 --- z Redshift 17- 21 F5.2 [-] logR* The k-corrected radio loudness parameter 23- 26 I4 km/s FWHM(Hb) Full-width at half-maximum of Hβ line 28- 31 I4 km/s FWHM([OIII]) ? Full-width at half-maximum of [OIII](5007Å) line 33- 37 F5.3 --- [OIII]/Hb ? The [OIII]/Hβ ratio 39- 43 F5.1 0.1nm EW(FeII) ? Equivalent width of FeII (2) 45- 50 F6.2 0.1nm EW(Hb) Equivalent width of Hβ 52- 57 F6.2 0.1nm EW([OIII]) ? Equivalent width of [OIII] 59- 63 F5.2 --- alpha Spectral index (3)
Note (1): Sources 1421+2824, 1644+2619, and 2155-0922 had [OIII] emission lines destroyed by atmospheric lines. Note (2): Calculated from the 4434-4684 and 5147-5350 Angstroms lines. Note (3): Where Sλ ∝ λ.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 01-Mar-2007
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact