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J/ApJ/522/846    Optical monitoring of GeV loud blazars    (Xie+, 1999)

Optical monitoring sample of the GeV gamma-ray-loud blazars Xie G.Z., Li K.H., Zhang X., Bai J.M., Liu W.W. <Astrophys. J. 522, 846 (1999)> =1999ApJ...522..846X
ADC_Keywords: BL Lac objects ; Gamma rays ; Photometry Keywords: BL Lacertae objects: general - gamma rays: observations - radiation mechanism: nonthermal Abstract: We present optical monitoring between 1994 February and 1997 December of 10 gamma-ray-loud blazars included in our blazar monitoring program. Most of the monitored objects show significant rapid variations. The typical minimum variability timescale in the optical range is about 1 hour. We have analyzed the relationships between optical variability and gamma-ray variability, and discussed theoretical models for the gamma-rayloud blazar emission. Objects: ----------------------------------------------------- RA (2000) DE Designation(s) ----------------------------------------------------- 12 56 11.24 -05 47 21.8 3C 279 = QSO 1253-055 02 22 39.68 +43 02 07.8 3C 66A = QSO 0219+428 02 35 52.72 +16 24 04.0 AO 0235+164 = QSO 0235+164 07 38 07.45 +17 42 18.9 PKS 0735+178 = QSO 0735+1749 08 54 48.93 +20 06 30.5 OJ 287 = QSO 0851+202 12 29 06.69 +02 03 08.6 3C 273 = QSO 1226+023 16 42 58.90 +39 48 37.0 3C 345 = QSO 1641+3954 16 53 52.30 +39 45 36.7 Mrk 501 = QSO 1652+39 21 58 52.16 -30 13 31.8 PKS 2155-304 = QSO 2155-304 22 02 43.38 +42 16 40.0 BL Lac = QSO 2200+420 ----------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 54 1246 Photometry of the gamma-ray-loud blazars
See also: J/A+AS/114/337 : CCD photometric observations of blazars (Jia Guibin+, 1995) J/A+AS/117/475 : BVRcIc photometry of 10 blazars (Fiorucci+, 1996) J/A+AS/121/119 : Optical monitoring of gamma-ray loud blazars. I (Villata+ 1997) J/A+AS/127/445 : Gamma-ray loud blazars optical monitoring. II. (Raiteri+ 1998) J/A+AS/128/315 : BVRI photometry of blazars (Jia Guibin+ 1998) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Object name 15- 18 I4 yr Obs.Y Year of observation (UT) 20- 22 A3 "month" Obs.M Month of observation (UT) 24- 25 I2 d Obs.D Day of observation (UT) 30- 41 F12.4 d JD Julian date of observation 43- 47 F5.2 mag Mag Magnitude of the observation 49- 52 F4.2 mag e_Mag RMS uncertainty in Mag 54 A1 --- f_Mag [BVIR] Indicates photometric filter used
History: From the ApJ electronic edition
(End) Greg Schwarz [AAS] 13-Mar-2000
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

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