Maqola

Imaging of the gravitational lens system PG 1115+080 with the Hubble Space Telescope

J. KristianCarnegie Institution of Washington, Observatories, Pasadena CA, United StatesE. J. GrothPrinceton Univ., NJ (United States)E. ShayaMaryland, University College Park, United StatesD. P. SchneiderInst. for Advanced Studies Princeton, NJ, United StatesJon A. HoltzmanLowell Observatory Flagstaff, AZ., United StatesW. A. BaumWashington Univ. Seattle., United StatesB. CampbellA. D. CodeWashburn Observatory Madison, WI, United StatesD. G. CurrieMaryland, University College Park, United StatesG. E. DanielsonCalifornia Inst. of Tech. Pasadena., United StatesS. P. EwaldSpace Telescope Science Institute, 3700 San Martin Dr., Baltimore, Maryland 21218J. J. HesterDepartment of Physics and Astronomy, Arizona State University, Tempe, Arizona 85287R. M. LightInfrared Processing and Analysis Center, MS 100-22, California Institute of Technology, Pasadena, California 91125C. R. LyndsNational Optical Astronomy Observatories, P.O. Box 26732, Tucson, Arizona 85726Jr. O'Neil E. J.National Optical Astronomy Observatories, P.O. Box 26732, Tucson, Arizona 85726P. K. SeidelmannU.S. Naval Observatory, Nautical Almanac Office, Washington, DC 20392James A. WestphalDivision of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125

1993en

ABI

Annotatsiya

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_ = 05)

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1086/116729

Iqtiboslar va manbalar

2 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar