J/MNRAS/406/2473    Photometry of GRB 071025                  (Perley+, 2010)
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Evidence for supernova-synthesized dust from the rising afterglow of
GRB071025 at z ~ 5.
    Perley D.A., Bloom J.S., Klein C.R., Covino S., Minezaki T., Wozniak P.,
    Vestrand W.T., Williams G.G., Milne P., Butler N.R., Updike A.C.,
    Kruhler T., Afonso P., Antonelli A., Cowie L., Ferrero P., Greiner J.,
    Hartmann D.H., Kakazu Y., Yoldas A.K., Morgan A.N., Price P.A.,
    Prochaska J.X., Yoshii Y.
   <Mon. Not. R. Astron. Soc., 406, 2473-2487 (2010)>
   =2010MNRAS.406.2473P
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ADC_Keywords: Gamma rays ; Photometry, infrared
Keywords: dust, extinction - gamma-ray burst: general -
          gamma-ray burst: individual: 071025

Abstract:
    We present observations and analysis of the broad-band afterglow of
    Swift GRB 071025. Using optical and infrared (RIYJHK) photometry, we
    derive a photometric redshift of 4.4<z<5.2; at this redshift our
    simultaneous multicolour observations begin at ~30s after the
    gamma-ray burst trigger in the host frame, during the initial rising
    phase of the afterglow.

Description:
    At 04:08:54 UT on 2007 October 25, the Burst Alert Telescope on-board
    Swift detected GRB 071025 and performed a rapid slew to the GRB
    location, beginning observations with the X-Ray Telescope at 146s
    after the trigger.

    The robotic IR observatory PAIRITEL consists of the 1.3-m Peters
    Telescope at Mt. Hopkins, Arizona, formerly used for the Two-Micron
    All-Sky Survey.

    PAIRITEL responded to the initial Gamma-ray burst Coordinate Network
    alert at 74.3s and slewed immediately to the source. Observations
    began at 162s and continued uninterrupted until 3812s, when due to a
    problem with the observing queue PAIRITEL temporarily slewed to
    another location. Observations resumed at 9108s and continued for
    another 2h.

Objects:
    -------------------------------------------------
       RA   (2000)   DE      Designation(s)
    -------------------------------------------------
    23 40 15.6   +31 47 03   GRB 071025 = GRB 071025
    -------------------------------------------------

File Summary:
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 FileName   Lrecl  Records   Explanations
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ReadMe         80        .   This file
table1.dat     61       39   PAIRITEL observations of GRB 071025
table3.dat     67      197   Additional photometry of GRB 071025
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Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   1-  7  F7.1  s       Tstart    Star time measured from the Swift trigger
                                   (UT 2007 October 25 04:08:54)
   9- 15  F7.1  s       Tend      End time measured from the Swift trigger
                                   (Ut 2007 October 25 04:08:54)
  17- 22  F6.1  s       Texp      Exposure time
  24- 29  F6.3  mag     Jmag      2MASS J magnitude (1)
  31- 35  F5.3  mag   e_Jmag      rms uncertainty on Jmag
  37- 42  F6.3  mag     Hmag      2MASS H magnitude (1)
  44- 48  F5.3  mag   e_Hmag      rms uncertainty on Hmag
  50- 55  F6.3  mag     Ksmag     2MASS Ks magnitude (1)
  57- 61  F5.3  mag   e_Ksmag     rms uncertainty on Ksmag
--------------------------------------------------------------------------------
Note (1): Magnitudes are in the 2MASS (Vega) system and not corrected
     for Galactic extinction.
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Byte-by-byte Description of file: table3.dat
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   Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   1- 11  A11   ---     Tel       Telescope
  13- 20  F8.1  s       Tmid      Exposure mid-time measured from the Swift
                                   trigger (UT 2007 Oct 25 04:08:54)
  22- 27  F6.1  s       Texp      Exposure time
  29- 33  A5    ---     Filt      Filter (1)
      35  A1    ---     fDet      [dx] Detection flag (2)
      37  A1    ---   l_mag       Limit flag on mag (5)
  38- 43  F6.3  mag     mag       Magnitude in filter (3)
  45- 49  F5.3  mag   e_mag       ?=- rms uncertainty on mag
      51  A1    ---   l_Flux      Limit flag on Flux (5)
  52- 59  F8.3  uJy     Flux      Flux in filter (4)
  61- 67  F7.3  uJy   e_Flux      ?=- rms uncertainty on Flux
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Note (1): JHKYRI K'KsV magnitudes are in the Vega system,
     griz magnitudes are in the SDSS (approximately AB) system
Note (2): Detection flag as follows:
      d = indicates a detection
      x = detection not used in our primary light curve fitting
Note (3): No Galactic extinction correction has been applied to magnitudes.
Note (4): Reported fluxes are corrected for E_(B-V)=0.074mag.
Note (5): Limiting values are 3-sigma. Some <3-sigma detections are
     reported, as in many cases these are marginal detections that impose 
     a useful constraint on the light curve or SED.
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History:
    From electronic version of the journal

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(End)                                      Patricia Vannier [CDS]    07-Mar-2011