Chandra X-ray observations of M81 (Swartz+, 2003)

Details Chandra X-ray observations of M81 (Swartz+, 2003) Chandra X-ray observations of M81 (Swartz+, 2003)

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ycat..21440213s&link_type=abstract

VizieR On-line Data Catalog: J/ApJS/144/213. Originally published in: 2003ApJS..144..213S

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The primary X-ray data set is a 49926s observation of M81 obtained on 2000 May 7 with the Chandra Advanced CCD Imaging Spectrometer (ACIS) spectroscopy array operating in imaging mode. Unless otherwise noted, references to X-ray data will refer to this data set. The X-ray data were reprocessed by the Chandra X-ray Center (CXC) on 2001 January 4. This reprocessed data are used in this work. There are no significant differences between the reprocessed data and the originally distributed data analyzed by Tennant et al. (2001ApJ...549L..43T). The observation was taken in faint timed exposure mode at 3.241s/frame at a focal plane temperature of -120{deg}C. Standard CXC processing has applied aspect corrections and compensated for spacecraft dither.
The primary target, SN 1993J, was located near the nominal aimpoint on the back-illuminated (BI) device S3. The nucleus of M81 lies 2.79' from SN 1993J toward the center of S3 in this observation. Accurate positions of these two objects and two G0 stars located on device S2 were used to identify any offset and to determine absolute locations of the remaining Chandra sources as well as objects in other X-ray images and those obtained at other wavelengths. No offset correction was applied to the Chandra X-ray positions.
(2 data files).

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