THE SCAE GROUP BLAZAR DATABASE

In late 1990 some astronomers now belonging to the SCAE group (gruppo Sorgenti Cosmiche di Alta Energia i.e. High Energy Cosmic Sources group) of the Physic Department of the University of Rome "La Sapienza", began to collect photometric BVRcIc observations of predefined lists of objects with the Newtonian telescopes of Greve in Chianti (FI) and Vallinfreda (RM). These instruments are now dedicated to the monitoring of a sample of about 20 blazars, quasars, and BL Lac objects with the principal aims of searching for possible typical time scales and spectral variability. From 1996 to 2000 the observations were performed also with the Cassegrain Telescope of Monte Porzio Catone (RM): this telescope has collected also some data in the Arizona filters F72, F80, F86 and F99.

In six years of blazar monitoring, we have collected about 18500 photometric points, contributing to get the largest existing database on many sources.

In the above table we list for each object some useful informations: in the last three column we report blazar finding chart, historical light curve in Rc band and a link to the NED page.

LIST OF BLAZARS OBSERVED DURING THE ROMA MONITORING PROGRAM (1994-2000)
WITH THE TELESCOPES OF GREVE IN CHIANTI, MONTE PORZIO CATONE, VALLINFREDA

Object Name

Other Names

Blazar
Type (1)

RA
(2000)

Dec
(2000)

Redshift
z

Num
of obs
(2)

Average Mag R
(3)

Mag R min

Mag R max

Finding Chart
(4)

Light Curve
(5)

NED Data
(6)

  GC 0109+224   S2 0109+22
  TXS 0109+224
  BL   01 12 05.8   +22 44 39   ...   91   14.82   16.21   13.30 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  3C 66A   1ES 0219+428
  B3 0219+428A
  HPQ   02 22 39.6   +43 02 08   0.444   913   13.79   14.94   13.08 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  AO 0235+164   1ES 0235+164
  OD 160
  BL   02 38 38.8   +16 36 59   0.940   105   14.98   16.94   14.04 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  PKS 0422+00   OF 38
  TXS 0422+004
  BL   04 24 46.8   +00 36 06   0.310   552   14.06   15.46   13.03 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  S5 0716+71   TXS 0716+714
  1H 0717+714
  BL   07 21 53.4   +71 20 36   >   0.3   1220   13.71   14.81   12.58 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  OJ 287   PKS 0851+202
  PG 0851+202
  OVV   08 54 48.9   +20 06 31   0.306   451   14.67   16.27   13.65 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  W Com   ON 231
  B2 1219+28
  BL   12 21 31.7   +28 13 59   0.102   739   13.65   15.00   12.18 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  OQ 530   PG 1418+546
  S4 1418+54
  BL   14 19 46.6   +54 23 15   0.151   868   15.15   15.86   14.44 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  S5 1803+78   8C 1803+784   BL   18 00 45.8   +78 28 04   0.680   822   14.66   15.19   14.40 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  1ES 1959+650   TXS 1959+650   BL   19 59 59.8   +65 08 55   0.047   29   14.52   14.64   14.36 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)
  BL Lac   S4 2200+42
  OY 401
  BL   22 02 43.3   +42 16 40   0.0686   1489   13.51   15.20   12.38 ico-cartine.gif (1054 byte) ico-curveluce.gif (912 byte) icoNEDdata.gif (961 byte)

(1) Classification from:

    BL= BL Lac object (HBL or LBL),     HPQ= High Polarized Quasar,   LPQ=Low Polarized Quasar,   OVV=Optically Violent Variable quasar,   UG=unusual galaxy.

(2) Number of total photometric observations in BVRcIc filters (excluding intranight variability observations).

(3) Averaged Magnitude in Rc filter.

(4) Contains finding chart and data on BVRI photometry of comparision stars in the blazar field.

(5) Historical light curve in Rc band from 1994 to December 2001 (not for all objects). 

(6) Link to blazar page of the Nasa Extragalactic Database.

Last Update 13 December 2002