The First Swift Ultra-Violet/Optical Telescope
GRB Afterglow Catalog
We present the first Swift Ultra-Violet/Optical Telescope (UVOT) gammaray burst (GRB) afterglow catalog. The catalog contains data from over 64,000 independent UVOT image observations of 229 GRBs first detected by Swift, the High Energy Transient Explorer 2 (HETE2), the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL), and the Interplanetary Network (IPN). The catalog covers GRBs occurring during the period from 2005 Jan 17 to 2007 Jun 16 and includes approximately 86% of the bursts detected by the Swift Burst Alert Telescope (BAT). The catalog provides detailed burst positional, temporal, and photometric information extracted from each of the UVOT images. Positions for bursts detected at the 3σ-level are provided with a nominal accuracy, relative to the USNO-B1 catalog, of approximately 0.25 arcseconds. Photometry for each burst is given in three UV bands, three optical bands, and a ‘white’ or open filter. Upper limits for magnitudes are reported for sources detected below 3σ. General properties of the burst sample and light curves, including the filter-dependent temporal slopes, are also provided. The majority of the UVOT light curves, for bursts detected at the 3-level, can be fit by a single power-law, with a median temporal slope (Alpha) of 0.96, beginning several hundred seconds after the burst trigger and ending at approximately 1×105 seconds. The median UVOT v-band (5500 Å) magnitude at 2000 s for a sample of well detected bursts is 18.02. The UVOT flux interpolated to 2000 s after the burst, shows relatively strong correlations with both the prompt Swift BAT fluence, and the Swift X-ray flux at 11 hours after the trigger.
P. W. A. Roming1, T. S. Koch1, S. R. Oates2, B. L. Porterfield3, D. E. Vanden Berk1, P. T. Boyd4, S. T. Holland4,5,6, E. A. Hoversten1, S. Immler4,5, F. E. Marshall4, M. J. Page2, J. L.Racusin1, D. P. Schneider1, A. A. Breeveld 2, P. J. Brown1, M. M. Chester1, A. Cucchiara1, M. De Pasquale2, C. Gronwall1, S. D. Hunsberger1, N. P. M. Kuin2, W. B. Landsman4, P. Schady2, M. Still2
- Department of Astronomy & Astrophysics, Penn State University, 525 Davey Lab, University Park, PA 16802, USA; Corresponding author’s e-mail: email@example.com
- Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
- State College Area High School, 653 Westerly Parkway, State College, PA 16801, USA
- NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA
- Universities Space Research Association, 10227 Wincopin Circle, Suite 500, Columbia, MD 21044, USA
- Centre for Space Research in Space Science and Technology, Code 660, NASA/GSFC, 8800 Greenbelt Rd, Greenbelt, MD 20771, US
Grab a pre-print version of the paper from astro-ph.
In Table 1 we offer a number of data products to the astronomical community. First, is a UVOT GRB Afterglow Catalog which contains a number of parameters derived for each burst. It also contains a number of other burst properties obtained from the literature. Secondly we provide a database of raw photometric measurments derived from the UVOT Image Archive. We provide photometry derived from both 3 arcsecond and 5 arcsecond source apertures. Thirdly we provide a database of 10 second resolution photometric measurements derived from prompt event lists. In Table 2 we provide light curves of well detected bursts. We also provide finding charts which show the apertures we used in our photometric measurements.
|Table 1 - Catalog Data Products|
|Data Product||FITS Format||ASCII Format|
|UVOT GRB Catalog Table||UvotGrbCatalogTable.fits||UvotGrbCatalogTable.txt|
|UVOT GRB Image Photometric Database (3" Source Apertures)||UvotGrbCatalog1.0__3.0_db.fits.gz||UvotGrbCatalog1.0__3.0_db.txt.gz|
|UVOT GRB Image Photometric Database (5" Source Apertures)||UvotGrbCatalog1.0__5.0_db.fits.gz||UvotGrbCatalog1.0__5.0_db.txt.gz|
|UVOT GRB Event Photometric Database||UvotGrbCatalogEvent1.0_db.fits.gz||UvotGrbCatalogEvent1.0_db.txt.gz|
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