J/A+A/551/A104 Lensed QSO UM673/Q0142-100 VRi light curves (Ricci+, 2013)
Flux and color variations of the doubly imaged quasar UM673.
Ricci D., Elyiv A., Finet F., Wertz O., Alsubai K., Anguita T., Bozza V.,
Browne P., Burgdorf M., Calchi Novati S., Dodds P., Dominik M., Dreizler S.,
Gerner T., Glitrup M., Grundahl F., Hardis S., Harpsoe K., Hinse T.C.,
Hornstrup A., Hundertmark M., Jorgensen U.G., Kains N., Kerins E.,
Liebig C., Maier G., Mancini L., Masi G., Mathiasen M., Penny M., Proft S.,
Rahvar S., Scarpetta G., Sahu K., Schaefer S., Schoenebeck F., Schmidt R.,
Skottfelt J., Snodgrass C., Southworth J., Thoene C.C., Wambsganss J.,
Zimmer F., Zub M., Surdej J.
<Astron. Astrophys. 551, A104 (2013)>
=2013A&A...551A.104R 2013A&A...551A.104R
ADC_Keywords: Gravitational lensing ; QSOs ; Photometry
Keywords: quasar: general - gravitational lensing - techniques: photometric
Abstract:
We present four years of photometric observations of the doubly imaged
quasar UM673, carried out in three filters (VRi) with the Danish 1.54m
telescope at the La Silla Observatory. We studied the variations in
flux and in color index of each lensed component as a function of
time, and we obtained an independent estimation of the magnitude of
the faint lens galaxy, showing that its contribution cannot be
neglected.
Description:
The Table contains the light curves, in the V, R, and i bands, of the
two lensed components of the quasar UM673. The Table also contains the
light curve of the "B+G" component, obtained by superposing the flux
of the fainter B component and the flux of the lens galaxy.
Objects:
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RA (2000) DE Designation(s)
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01 45 16.5 -09 45 17 UM 673 = QSO B0142-100
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablevri.dat 80 99 Light curves in the VRi filters
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See also:
J/A+A/420/447 : VRI photometry of lensed quasar QSO B2237+0305 (Vakulik+, 2004)
J/A+A/528/A42 : VRi light curves of the lensed QSO HE 0435-1223 (Ricci+, 2011)
J/A+A/544/A51 : R-band photometry of the lensed quasar UM673 (Koptelova+, 2012)
Byte-by-byte Description of file: tablevri.dat
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Bytes Format Units Label Explanations
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1- 8 F8.2 d MJDi ?=- Modified Julian Date for i filter
10- 14 F5.2 mag i(A) ?=- Magnitude for A component in i filter (1)
16- 20 F5.2 mag i(B) ?=- Magnitude for B component in i filter (1)
22- 26 F5.2 mag i(BG) ?=- Magnitude for B+G component in i filter (1)
28- 35 F8.2 d MJDR ?=- Modified Julian Date for R filter
37- 41 F5.2 mag R(A) ?=- Magnitude for A component in R filter (1)
43- 47 F5.2 mag R(B) ?=- Magnitude for B component in R filter (1)
49- 53 F5.2 mag R(BG) ?=- Magnitude for B+G component in R filter (1)
55- 62 F8.2 d MJDV ?=- Modified Julian Date for V filter
64- 68 F5.2 mag V(A) ?=- Magnitude for A component in V filter (1)
70- 74 F5.2 mag V(B) ?=- Magnitude for B component in V filter (1)
76- 80 F5.2 mag V(BG) ?=- Magnitude for B+G component in V filter (1)
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Note (1): Typical errors of individual observations are near 0.02 and
0.05-0.08mag for the "A" and "B" components, respectively. For a more solid
calculation of the error, we averaged in the in the paper the data of each
season (see Fig. 5 and Table 3). The errors indicate the standard deviation
over the considered season.
"---" in the data file refer to an observing night with no observation in
that filter.
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Acknowledgements:
Davide Ricci, ricci(at)astro.ulg.ac.be
(End) Patricia Vannier [CDS] 28-Feb-2013