J/ApJ/625/633 Chandra sources in B1600+434 and B1608+656 fields (Dai+, 2005)
Chandra observations of the gravitational lenses B1600+434 and B1608+656.
Dai X., Kochanek C.S.
<Astrophys. J., 625, 633-642 (2005)>
=2005ApJ...625..633D 2005ApJ...625..633D
ADC_Keywords: Gravitational lensing ; Photometry, SDSS
Keywords: gravitational lensing
Abstract:
We observed B1600+434 and B1608+656 with Chandra ACIS, detecting both
quasar images in B1600+434 and three of four images in B1608+656. We
also detected 157 serendipitous X-ray sources in the two Chandra
fields and identified the brighter optical counterparts using the
Sloan Digital Sky Survey and Palomar Digital Sky Survey.
Description:
The data used in this paper are from the 2000 and 2002 Chandra
observations of the globular cluster 47 Tuc.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 122 75 Serendipitous sources detected in B1600+434 field
table5.dat 91 82 Serendipitous sources detected in B1608+656 field
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Byte-by-byte Description of file: table4.dat table5.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [CXO]
5- 20 A16 --- CXO Chandra identification
22- 30 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
32- 40 F9.6 deg DEdeg Declination in decimal degrees (J2000)
42- 44 F3.1 arcsec e_RAdeg Error in RAdeg
46- 48 F3.1 arcsec e_DEdeg Error in DEdeg
50- 52 I3 ct NCts Net counts
54- 55 I2 ct e_NCts Uncertainty in NCts
57- 61 F5.1 --- S/N Signal-to-noise ratio
63- 71 F9.5 deg ORAdeg ? Optical counterpart Right Ascension
in decimal degrees (J2000)
73- 81 F9.6 deg ODEdeg ? Optical counterpart Declination
in decimal degrees (J2000)
83- 85 F3.1 arcsec D(O-X) ? Angular distance between X-ray source and
optical counterpart
87- 93 F7.4 mag r'mag ? SDSS r' band magnitude (Cat. II/259)
95-122 A28 --- SDSSf SDSS flags on target
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 23-Nov-2005