SDSSp J104433.04-012502.2 at z = 5.74 is gravitationally magnified by an intervening galaxy

Yasuhiro Shioya, Yoshiaki Taniguchi, Takashi Murayama, Masaru Ajiki, Tohru Nagao, Shinobu S. Fujita, Yuko Kakazu, Yutaka Komiyama, Sadanori Okamura, Shinki Oyabu, Kimiaki Kawara, Youichi Ohyama, Koji S. Kawabata, Hiroyasu Ando, Tetsuo Nishimura, Masahiko Hayashi, Ryusuke Ogasawara, Shin Ichi Ichikawa

研究成果: Article査読

15 被引用数 (Scopus)

抄録

During the course of our optical deep survey program on La emitters at z ≈ 5.7 in the sky area surrounding the quasar SDSSp J104433.04-012502.2 at z = 5.74, we found that a faint galaxy with mB(AB) ≈ 25 is located at 1.″9 southwest of the quasar. Its broad-band color properties from B to z′ suggest that the galaxy is located at a redshift of z ∼ 1.5-2.5. This is consistent with no strong emission line in our optical spectroscopy. Since the counter-image of the quasar cannot be seen in our deep optical images, the magnification factor seems not to be very high. Our modest estimate is that this quasar is gravitationally magnified by a factor of 2.

本文言語English
ページ(範囲)975-979
ページ数5
ジャーナルPublications of the Astronomical Society of Japan
54
6
DOI
出版ステータスPublished - 2002

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 宇宙惑星科学

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