2014A&A...566A..36K


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.22CET23:39:07

2014A&A...566A..36K - Astronomy and Astrophysics, volume 566A, 36-36 (2014/6-1)

New near-infrared observations and lens-model constraints for UM 673.

KOPTELOVA E., CHIUEH T., CHEN W.P. and CHAN H.H.

Abstract (from CDS):

We performed a detailed photometric analysis of the lensed system UM673 (Q0142-100) and an analysis of the tentative lens models.High-resolution adaptive optics images of UM673 taken with the Subaru telescope in the H band were examined. We also analysed the J, H and K-band observational data of UM673 obtained with the 1.3m telescope at the CTIO observatory.We present photometry of quasar components A and B of UM673, the lens, and the nearby bright galaxy using H-band observational data obtained with the Subaru telescope. Based on the CTIO observations of UM673, we also present J- and H-band photometry and estimates of the J, H and K-band flux ratios between the two UM673 components in recent epochs. The near-infrared fluxes of the A and B components of UM673 and their published optical fluxes are analysed to measure extinction properties of the lensing galaxy. We estimate the extinction-corrected flux ratio between components A and B to be about 2.14mag. We discuss lens models for the UM673 system constrained with the positions of the UM673 components, their flux ratio, and the previously measured time delay.

Abstract Copyright:

Journal keyword(s): gravitational lensing: strong - methods: data analysis - quasars: individual: UM673

VizieR on-line data: <Available at CDS (J/A+A/566/A36): list.dat fits/*>

CDS comments: Table 3 calibration stars not in SIMBAD.

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 [SMS87] 0142-100 G G 01 44 -09.7           ~ 23 1
2 [LFK2000] 0142-100 G3 ? 01 45 16.0 -09 45 17           ~ 1 0
3 [LFK2000] 0142-100 G1 ? 01 45 16.0 -09 45 17           ~ 1 0
4 [LFK2000] 0142-100 G2 ? 01 45 16.0 -09 45 17           ~ 1 0
5 QSO B0142-100 QSO 01 45 16.5955770048 -09 45 17.269954127   17.23 16.95     ~ 221 1
6 QSO B0142-100B LeQ 01 45 17.3 -09 45 12     19.1     ~ 26 1
7 QSO B0142-100A LeQ 01 45 17.3 -09 45 12     16.9     ~ 37 1
8 Feige 16 * 01 54 34.6343481929 -06 45 59.686242437 12.410 12.397 12.405 12.412 12.409 A0 27 0
9 QSO B0909+5312 QSO 09 13 01.031 +52 59 28.90   17.29 16.71     ~ 127 1
10 QSO J1415+1129 QSO 14 15 46.25 +11 29 43.4   17.63 17.23     ~ 584 1

    Equat.    Gal    SGal    Ecl

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2020.01.22-23:39:07

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