J/ApJ/626/95 Gamma-ray blazar candidates (Sowards-Emmerd+, 2005) ================================================================================ A northern survey of gamma-ray blazar candidates. Sowards-Emmerd D., Romani R.W., Michelson P.F., Healey S.E., Nolan P.L. =2005ApJ...626...95S ================================================================================ ADC_Keywords: BL Lac objects ; Radio sources ; Gamma rays Keywords: BL Lacertae objects: general - gamma rays: observations Abstract: In preparation for the Gamma-Ray Large Area Space Telescope (GLAST), we have compiled a sample of blazar candidates to increase the pool of well-studied active galactic nuclei from which GLAST counterparts will be drawn. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 74 710 Figure-of-Merit-selected objects table2.dat 28 74 X-Ray-selected targets -------------------------------------------------------------------------------- See also: VIII/40 : GB6 catalog of radio sources (Gregory+ 1996) VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998) VIII/72 : CLASS survey of radio sources (Myers+, 2003) IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999) IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000) J/ApJS/123/79 : Third EGRET catalog (3EG) (Hartman+, 1999) J/ApJS/135/155 : Radio identification of 3EG EGRET sources (Mattox+, 2001) J/AJ/115/1253 : Deep X-Ray Radio Blazar Survey (DXRBS). I. (Perlman+ 1998) J/ApJ/590/109 : Gamma-ray blazar in northern sky (Sowards-Emmerd+, 2003) J/ApJ/609/564 : Blazar counterparts for 3EG sources (Sowards-Emmerd+, 2004) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 19 A19 --- Name Source name (JHHMMSS.ss+DDMMSS.s) 21- 25 F5.3 --- FoM Figure of Merit (1) 27- 31 F5.3 --- P(Prod) ? Product probability (2) 33- 37 F5.3 --- P(Peak) ? Peak probability (2) 39- 45 F7.1 mJy S8.4GHz The 8.4GHz flux density 47- 51 F5.2 --- SpIndex Radio spectral index 53- 57 F5.3 ct/s Cts ROSAT All-Sky Survey count rate 59- 62 F4.1 mag Rmag ? The USNO B1.0 R2 magnitude 64- 68 F5.3 --- z ? Redshift 69 A1 --- u_z Uncertainty flag on z 71 A1 --- Type Source classification (G1) 73 I1 --- Origin Origin of Spectroscopy (4) -------------------------------------------------------------------------------- Note (1): The figure of merit is the combination of the fractional excesses for each of the counterpart candidate's properties with the estimate of the positional probability: FoM=n_8.4GHz_*n_{alpha}_*n_X-ray_*L({alpha},{delta}). Sources with FoM>1 are designated as "likely" counterparts, and 0.25