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J/ApJS/192/12     Photometry of the blazar PKS 0537-441      (Impiombato+, 2011)
Optical and infrared photometry of the blazar PKS 0537-441:
long and short timescale variability.
    Impiombato D., Covino S., Treves A., Foschini L., Pian E., Tosti G.,
    Fugazza D., Nicastro L., Ciprini S.
   <Astrophys. J. Suppl. Ser., 192, 12 (2011)>
   =2011ApJS..192...12I
ADC_Keywords: BL Lac objects ; Photometry, VRI ; Photometry, infrared ;
              Active gal. nuclei
Keywords: BL Lacertae objects: individual (PKS 0537-441) - galaxies: active


Abstract:
    We present a large collection of photometric data on the blazar
    PKS 0537-441 in the VRIJHK bands taken in 2004-2009. At least three
    flare-like episodes with months duration and >3mag amplitude are
    apparent. The spectral energy distribution is consistent with a power
    law, and no indication of a thermal component is found. We searched
    for short timescale variability, and an interesting event was
    identified in the J band, with a duration of ∼25 minutes.

Description:
    The Rapid Eye Mount (REM) telescope is a 60cm fully robotic instrument
    with cameras in NIR (REMIR) and optical (ROSS); located at the ESO
    Cerro La Silla observatory (Chile). Both cameras have a field of view
    of 10'x10' and imaging capabilities with the usual NIR (z', J, H, K)
    and Johnson-Cousins VRI filters. The REM telescope has systematically
    observed PKS 0537-441 for five years between 2004 December and 2009
    March.
Objects:
    ----------------------------------------------------------
     RA   (2000)   DE         Designation(s)
    ----------------------------------------------------------
     05 38 50.4   -44 05 09   PKS 0537-441 = QSO B0537-441
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        30     6365   Photometry of PKS0537-441 from December 2004 to
                             March 2009


See also:
   III/157 : An Ultraviolet Atlas of Quasar and Blazar Spectra (Kinney+, 1991)
   J/A+A/520/A47  : Blazars in the Swift-BAT hard X-ray sky (Maselli+, 2010)
   J/PASJ/60/161  : Multi-wave band emission from blazars (Yi+, 2008)
   J/A+A/433/1163 : Spectral catalog of BeppoSAX blazars (Donato+, 2005)
   J/A+A/436/799  : X- and gamma-ray fluxes of γ-ray-loud blazars (Fan+,
                    2005)
   J/ApJ/537/101  : Optical Study for blazars. I. (Fan+, 2000)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1- 11  F11.5 d       MJD       Modified Julian Date of the observation
  13- 15  I3    s       Exp       Exposure time
      17  A1    ---     Filt      [JHKVRI] Filter used in the observation
  19- 24  F6.3  mag     mag       Observed magnitude in Filt
  26- 30  F5.3  mag     e_mag     Error in mag


History:
    From electronic version of the journal
(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    30-Mar-2011