Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-07-02T17:34:18.884Z Has data issue: false hasContentIssue false
  • English
  • Français

The Clover Leaf Quasar H1413+117: New Photometric Light Curves

Published online by Cambridge University Press:  25 May 2016

M. Remy ,
E. Gosset ,
D. Hutsemékers ,
B. Revenaz  and
J. Surdej
M. Remy
Affiliation:
Institut d'Astrophysique, Liège, Belgium
E. Gosset
Affiliation:
Institut d'Astrophysique, Liège, Belgium Chercheur Qualifié au FNRS, Belgium
D. Hutsemékers
Affiliation:
Institut d'Astrophysique, Liège, Belgium Chercheur Qualifié au FNRS, Belgium
B. Revenaz
Affiliation:
Space Telescope Science Institute, Baltimore, MD, USA
J. Surdej
Affiliation:
Space Telescope Science Institute, Baltimore, MD, USA Directeur de Recherches au FNRS, Belgium

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Direct CCD images of the gravitationally lensed BAL quasar H1413+117 (Bessel B, V, R, I; Gunn r and i), obtained during 1989-1994 in the framework of photometric monitorings at ESO and with the NOT, have been carefully (re-)analyzed. Simultaneous fitting of 4 PSFs, fixing the relative positions of components B, C and D with respect to A, has been achieved successfully. The relative light curves of the 4 lensed QSO images, with respect to a stable nearby comparison star, confirm the general trend already presented by Arnould et al. (1993). The amplitude of the light curves is found to be about 0.5 magnitude, peak-to-peak in the V filter. The four lensed components display brightness variations quasi-simultaneously and in parallel. In addition to these intrinsic light variations due to the source, we find that component D shows extra light variations with respect to the other components. These are very likely caused by micro-lensing.

Type
Chapter 8: Quasar Structure & Microlensing
Information
Symposium - International Astronomical Union , Volume 173: Astrophysical Applications of Gravitational Lensing , 1996 , pp. 261 - 262
Copyright
Copyright © Kluwer 1996 

References

Angonin, M.-C., et al., 1990, A&A, 223, L5 Google Scholar
Arnould, P., et al., 1993, in Gravitational Lenses in the Universe, eds. Surdej, J. et al., (Liège: Université de Liège) 169 Google Scholar