Abstract
We present high spatial resolution images of the gravitational-lens system PG 1115+080 taken with the near-infrared camera (CISCO) on the Subaru telescope. The FWHM of the combined image is 0.″32 in the K′-band, yielding spatial resolution of 0.″14 after a deconvolution procedure. This is a first detection of an extended emission adjacent to the A1/A2 components, indicating the presence of a fairly bright, emission region with a characteristic angular radius of ∼ 5 mas (40 pc). The near-infrared image of the Einstein ring was extracted in both the J and K′ bands. The J - K′ color is found to be significantly redder than that of a synthetic model galaxy with an age of 3 Gyr, the age of the universe at the quasar redshift.
Original language | English |
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Pages (from-to) | 25-32 |
Number of pages | 8 |
Journal | Publications of the Astronomical Society of Japan |
Volume | 52 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2000 |
Externally published | Yes |
Keywords
- Galaxies: structure
- Gravitational lensing
- Quasars: individual (PG 1115+080)
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science