Fifth image and photometric variability in 2237 + 0305 ('Einstein Cross')
- Observatoire du Mont Megantic (Canada) Montreal, Universite, Montreal (Canada) Canada-France-Hawaii Telescope Corp., Kamuela, HI (United States)
The paper describes the morphological and photometric characteristics of the gravitational mirage 2237 + 0305, obtained by combining CCD frames in R and I taken with HRCam at the CFHT in a 0.4 arcsec (FWHM) observation on August 23, 1990. High S/N images of the 2237 + 0305 provided precise positions and relative magnitudes for the four brighter components and for the galaxy core, and new information on the light distribution in the lensing galaxy core was obtained. Compared with Yee's (1988) photometry, the present data show components B brighter by 0.25 mag and C fainter by 0.15 mag, while the brightness of A and D and the colors of all four images are unchanged. Possible reason for the variability trends of the four components are discussed. 19 refs.
- OSTI ID:
- 5184668
- Journal Information:
- Astronomical Journal; (United States), Vol. 102; ISSN 0004-6256
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comment on the discovery of the QSO and related galaxy 2237 + 0305
STATISTICS OF MICROLENSING CAUSTIC CROSSINGS IN Q 2237+0305: PECULIAR VELOCITY OF THE LENS GALAXY AND ACCRETION DISK SIZE
Related Subjects
GENERAL PHYSICS
GRAVITATIONAL LENSES
QUASARS
IMAGES
CHARGE-COUPLED DEVICES
COLOR
LUMINOSITY
MORPHOLOGY
PHOTOMETRY
VARIATIONS
COSMIC RADIO SOURCES
LENSES
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
SEMICONDUCTOR DEVICES
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources