Infrared imaging of the gravitational lens PG 1115+080 with the Subaru telescope

被引：7

作者：

Iwamuro, F ^{[1
]}

Motohara, K

Maihara, T

Iwai, J

Tanabe, H

Taguchi, T

Hata, R

Terada, H

Goto, M

Oya, S

Akiyama, M

Ando, H

Aoki, T

Chikada, Y

Doi, M

Fukuda, T

Hamabe, M

Hayashi, M

Hayashi, SS

Horaguchi, T

Ichikawa, S

Ichikawa, T

Imanishi, M

Imi, K

Inata, M

Isobe, S

Itoh, Y

Iye, M

Kaifu, N

Kamata, Y

Kanzawa, T

Karoji, H

Kashikawa, N

Kato, T

Kobayashi, N

Kobayashi, Y

Kodaira, K

Kosugi, G

Kurakami, T

Mikami, Y

Miyashita, A

Miyata, T

Miyazaki, S

Mizumoto, Y

Nakagiri, M

Nakajima, K

Nakamura, K

Nariai, K

Nishihara, E

Nishikawa, J

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] Natl Astron Observ, Hilo, HI 96720 USA

[3] Kyoto Univ, Dept Astron, Kyoto 6068502, Japan

[4] Natl Astron Observ, Opt & Infrared Astron Div, Tokyo 1818588, Japan

[5] Commun Res Labs, Tokyo 1848975, Japan

[6] Univ Tokyo, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan

[7] Natl Astron Observ, Ctr Adv Technol, Tokyo 1818588, Japan

[8] Univ Tokyo, Inst Astron, Tokyo 1818588, Japan

[9] Natl Sci Museum, Taito Ku, Tokyo 1108718, Japan

[10] Natl Astron Observ, Astron Data Anal Ctr, Tokyo 1818588, Japan

[11] Tohoku Univ, Inst Astron, Aoba Ku, Sendai, Miyagi 9808578, Japan

[12] Hitotsubashi Univ, Tokyo 1868601, Japan

[13] Univ Tokyo, Cosm Ray Res Lab, Tokyo 1888502, Japan

[14] Natl Astron Observ, Publ Relat Off, Tokyo 1818588, Japan

[15] Univ Tokyo, Kiso Observ, Nagano 3970101, Japan

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2000年 / 52卷 / 01期

关键词：

galaxies : structure; gravitational lensing; quasars : individual (PG 1115+080);

D O I：

10.1093/pasj/52.1.25

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 similar to 5 mns (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.

引用

页码：25 / 32

页数：8

共 20 条

[1]

BAKER JC, 1995, ASTROPHYS J, V452, pL95, DOI 10.1086/309726

[2] Origin of the viewing-angle dependence of the optical continuum emission in quasars [J].