J/AJ/133/1027ivo://CDS.VizieR/J/AJ/133/1027doi:10.26093/cds/vizier.51331027CDSButler N.R.2017-12-18T07:57:09Z2009-03-08T12:16:09ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgamma-ray-astronomyastrometryWe present a refined catalog for the positions of 179 gamma-ray burst (GRB) X-ray afterglows observed by the X-Ray Telescope (XRT) on Swift prior to 2006 November 1. The positions are determined by detecting X-ray field sources in the deep X-ray images and comparing the centroids to those of optical sources in the Digitized Sky Survey red2 catalog or the Sloan Digital Sky Survey Data Release 5 catalog. Half of the 90% confidence error region radii are <2.2". The error regions areas are typically ~4 times smaller than the best XRT team error regions, although the positions require deep X-ray integration (>20ks) and cannot be generated nearly as rapidly after the GRB. The positions derived for >90% of 77 bursts with optical afterglows are consistent with the optical transient positions, without the need for systematic error. About 20% of the afterglow positions require a sizable shift in the Swift satellite aspect. We discuss the optical/X-ray properties of the field sources and discuss the implications of the frame offsets for studies of optically dark GRBs.2007AJ....133.1027Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/133/1027CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toX/20 : The Fourth BATSE Burst Revised Catalog (Paciesas+ 1999)II/282 : The SDSS Photometric Catalog, DR6 (Adelman-McCarthy+, 2007)J/A+A/455/813 : BeppoSAX catalog of GRB X-ray afterglows (De Pasquale+, 2006)J/A+A/473/347 : BeppoSAX complete catalogue of GRBs (Vetere+, 2007)J/A+A/448/L9 : Position catalogue of Swift XRT afterglows (Moretti+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/133/1027https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/133/1027http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/133/1027https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/133/1027https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/133/1027http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/133/1027GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/133/1027/table1 (Refined XRT GRB Afterglow Positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/133/1027/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/133/1027/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/133/1027/table1?GETtext/xml+votable180.050000true180.572333310.85291670.0055555555555555566/205 314 338 393 453 500 923 1102 2357 2538 2925 3405 3536 3551 3849 3927 4296 4323 4485 4955 5455 5493 5618 5633 5726 6102 6404 6862 7184 7747 7908 7980 8375 8761 8798 8954 9069 9100 9330 9395 9682 9926 10278 10411 10447 10666 10836 10852 11307 11649 11673 12134 12597 13312 13558 13701 13767 13924 14020 14272 14335 14606 14781 14852 14977 15004 15246 15292 15473 15505 15513 15595 15683 16078 16172 16232 16546 16991 17279 17453 17733 17814 18264 18494 18910 18915 18978 19164 19168 19731 19890 19911 20030 20053 20263 20655 21082 21439 21498 22157 22422 22590 23138 24105 24424 25293 25597 25901 27238 27841 27911 28063 28497 28578 28630 28692 28831 29867 29884 30461 30553 30568 30692 31281 31385 31494 31607 31667 31934 32239 32676 33323 33735 33845 34435 34440 35045 35088 35485 35525 35566 36074 36297 36329 37007 37071 37830 38301 38926 39199 39268 39374 39475 39630 39829 39881 40249 40642 41555 41755 42840 42865 42914 42952 43280 43920 44021 44160 45008 45561 45938 47027 47136 47397 47459 47618 47632 48458 49004https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/133/1027?format=asciiGamma-raydefaultJ/AJ/133/1027/table1Refined XRT GRB Afterglow PositionsGRBGRB identificationmeta.id;meta.maincharn_GRB? Number in Fig.3 (1)meta.noteintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainOff[o] Indicates position lying outside the refined XRT-Team error regionmeta.codecharErr90The 90% confidence error region radiusarcsecstat.errorfloatn_Err90[ab] Matching optical catalog (2)meta.notecharSimbadSimbad column added by the CDSchar