[vsnet-grb-info 15468] GRB140818B, the review of the sky area in plate archives
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Sun Aug 31 04:39:22 JST 2014
TITLE: GCN CIRCULAR
NUMBER: 16757
SUBJECT: GRB140818B, the review of the sky area in plate archives
DATE: 14/08/30 19:39:14 GMT
FROM: Valentyna Golovnya at Main Astro Obs,Kyiv <golov_v at ukr.ne>
V.V. Golovnya (Main Astro Obs, Kyiv)
report:
We have undertaken the review of the sky area in vicinity of
GRB140818B (Vargas et al., GCN 16709; Beardmore et al.,
GCN 16712) on astronegatives, collected in Ukrainian NAS
Main astronomical observatory plate archive (1976-1996).
All the plates with the possible object appearance are
digitized using Microtek ScanMaker 9800XL TMA and Epson Expression 10000XL flatbed scanners and have been
placed into Golosiiv Plate Archive database DBGPA with open
access to them. The list of plates is given in the table:
yyyymmdd/TimeUT --Plates--             Exp. LM  USNOA2 0825
19910613/222704Â GUA040C001802AÂ 22.5Â 15.9Â Â -11812892
19910709/205250Â GUA040C001826AÂ 23.5Â 15.7Â Â -11814106
19820715/175441Â TAS040A000284Â Â Â 23.0Â 17.3Â Â -11812584
 No any object has been found in the point with the mentioned
coordinates of GRB. But the image of some object have found near GRB position on the two of selected plates.
Brighness of the object is estimated as V=15.0 and V=16.5:
 Plates                  RA,(J2000.0),Dec          V
GUA040C001802A 18:04:32.08 -01:22:57.0 15.0
TAS040A000284Â Â Â 18:04:32.63 -01:22:55.6 16.5
Plates:Â
GUA040Câthe plates archive identifier of DWA (D/F=400/2000,
        M=103"/mm) of the Ukrainian NAS Main Astro obs.
        (Marsden's number - 83) the plate number [1].
TAS040A -the plates archive identifier of DAZ (D/F=400/3000,
        M=68.8"/mm) of the Tashkent Astro obs.
        (Marsden's number - 186) the plate number [1].
Exp.  - Duration of the maximum exposure (minutes).
LM - Limited V mag, derived in the 2,5 arcmin area around
      the location given in GCN Circ.16712:
      RA(J2000): 18h 04m 32.53s, Dec(J2000): -01d 23' 10.6"
USNOA2 - Comparison star.
 The preview images of 3 areas together withÂ
the 2,5x2,5 min.of arc area from SkyMap can be found inÂ
http://gua.db.ukr-vo.org/img/grb/140818B/index.html
The images with full resolution are available via e-mail on
demand.
References:
1.L.Pakuliak DATABASE of GOLOSIIV PLATE ARCHIVE (DBGPA V2.0), http://gua.db.ukr-vo.org
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