Imaging of the gravitational lens system PG 1115+080 with the Hubble Space Telescope
Abstract
This paper is the first of a series presenting observations of gravitational lenses and lens candidates, taken with the Wide Field/Planetary Camera (WFPC) of the Hubble Space Telescope (HST). We have resolved the gravitational lens system PG 1115 + 080 into four point sources and a red, extended object that is presumably the lens galaxy; we present accurate relative intensities, colors, and positions of the four images, and lower accuracy intensity and position of the lens galaxy, all at the epoch 1991.2. Comparison with earlier data shows no compelling evidence for relative intensity variations between the QSO components having so far been observed. The new data agree with earlier conclusions that the system is rather simple, and can be produced by the single observed galaxy. The absence of asymmetry in the HST images implies that the emitting region of the quasar itself has an angular radius smaller than about 10 milliarcsec (100 pc for H_0=50, q_0=0.5).
Additional Information
© 1993 American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1993 May 26. This research was conducted by the WFPC Investigation Definition Team, supported in part by NASA Grant No. NAS5-1661.Attached Files
Published - 1993AJ____106_1330K.pdf
Files
1993AJ____106_1330K.pdf
Additional details
Identifiers
- Eprint ID
- 52352
- Resolver ID
- CaltechAUTHORS:20141203-142235653
Related works
- Describes
- http://adsabs.harvard.edu/abs/1993AJ....106.1330K (URL)
Funding
- NASA
- NAS5-1661
Dates
- Created
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2014-12-03Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field