J/A+A/499/395 R magnitudes of 5 double QSOs (Paraficz+, 2009)
Results of optical monitoring of 5 SDSS double QSOs with the
Nordic Optical Telescope.
Paraficz D., Hjorth J., Eliasdottir A.
<Astron. Astrophys. 499, 395 (2009)>
=2009A&A...499..395P 2009A&A...499..395P
ADC_Keywords: QSOs ; Photometry
Keywords: gravitational lensing, cosmological parameters - quasars: general
Abstract:
We present optical R-band light curves of five SDSS double QSOs
(SDSS J0903+5028, SDSS J1001+5027, SDSS J1206+4332, SDSS J1353+1138,
SDSS J1335+0118) obtained from monitoring at the Nordic Optical
Telescope (NOT) between September 2005 and September 2007. We also
present analytical and pixelated modeling of the observed systems. For
SDSS J1206+4332, we measured the time delay to be
Δτ=116+4-5days, which, for a Singular Isothermal
Ellipsoid model, corresponds to a Hubble constant of
73+3-4km/s/Mpc. Simultaneous pixelated modeling of five other
systems for which a time delay has now been previously measured at the
NOT leads to H0=61.5+8-4km/s/Mpc. Finally, by comparing
lightcurves of the two images of each system, suitably shifted by the
predicted or observed time-delays, we found no evidence for
microlensing variability over the course of the monitoring period.
Description:
Photometric parameters for five gravitationally lensed quasars
obtained at the Nordic Optical Telescope: SDSS J0903+5028,
SDSS J1001+5027, SDSS J1206+4332, SDSS J1353+1138, SDSS J1335+0118 are
presented. For each quasar image magnitudes and magnitude error are
given.
Objects:
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RA (2000) DE Designation(s) (File)
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09 03 34.9 +50 28 19 SDSS J0903+5028 = SDSS J090334.92+502819.2 (sdss0903.dat)
10 01 28.6 +50 27 57 SDSS J1001+5027 = SDSS J100128.61+502756.8 (sdss1001.dat)
12 06 29.6 +43 32 18 SDSS J1206+4332 = SDSS J120629.65+433217.6 (sdss1206.dat)
13 53 06.3 +11 38 05 SDSS J1353+1138 = SDSS J135306.35+113804.8 (sdss1353.dat)
13 35 34.8 +01 18 06 SDSS J1335+0118 = SDSS J133534.79+011805.5 (sdss1335.dat)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
sdss0903.dat 52 32 QSO SDSS 0903 photometric parameters for two images
sdss1001.dat 52 30 QSO SDSS 1001 photometric parameters for two images
sdss1206.dat 52 31 QSO SDSS 1206 photometric parameters for two images
sdss1335.dat 52 32 QSO SDSS 1335 photometric parameters for two images
sdss1353.dat 52 38 QSO SDSS 1353 photometric parameters for two images
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See also:
J/A+A/499/483 : Galactic center star cluster composition (Buchholz+, 2009)
http://www.sdss.org : SDSS Home Page
Byte-by-byte Description of file: sdss*.dat
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Bytes Format Units Label Explanations
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1- 9 F9.6 mag RmagA R magnitude of A component
11- 19 F9.6 mag RmagB R magnitude of B component
21- 29 F9.6 mag RmagRef ? R magnitude of reference
31- 38 F8.6 mag e_RmagRef ? Reference R magnitude error
40- 52 F13.5 d JD Julian date
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Acknowledgements:
Paraficz D., danka.dark(at)gmail.com
(End) Patricia Vannier [CDS] 09-Mar-2009