Strong Emission-Line Galaxies at Low Redshifts in the Field around the Quasar SDSSp J104433.04−012502.2 | Zendy

M. Ajiki | Zendy; Yasuhiro Shioya | Zendy; Yoshiaki Taniguchi | Zendy; Takashi Murayama | Zendy; Tohru Nagao | Zendy; Shunji S. Sasaki | Zendy; Ryoko Sumiya | Zendy; Taichi Morioka | Zendy; Yuichiro Hatakeyama | Zendy; Asuka Yokouchi | Zendy; Mari Takahashi | Zendy; Osamu Koizumi | Zendy

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Strong Emission-Line Galaxies at Low Redshifts in the Field around the Quasar SDSSp J104433.04−012502.2

Author(s) -

M. Ajiki,

Yasuhiro Shioya,

Yoshiaki Taniguchi,

Takashi Murayama,

Tohru Nagao,

Shunji S. Sasaki,

Ryoko Sumiya,

Taichi Morioka,

Yuichiro Hatakeyama,

Asuka Yokouchi,

Mari Takahashi,

Osamu Koizumi

Publication year - 2006

Publication title -

publications of the astronomical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.99

H-Index - 110

eISSN - 2053-051X

pISSN - 0004-6264

DOI - 10.1093/pasj/58.1.113

Subject(s) - physics , redshift , astrophysics , quasar , full width at half maximum , equivalent width , galaxy , lambda , emission spectrum , center (category theory) , line (geometry) , spectral line , astronomy , optics , crystallography , chemistry , geometry , mathematics

We discuss observational properties of strong emission-line galaxies at lowredshift found by our deep imaging survey for high-redshift Ly alpha emitters.In our surveys, we used the narrowband filter, NB816 (lambda_center=8150A withFWHM = 120A), and the intermediate-band filter, IA827 (lambda_center = 8270Awith FWHM = 340A). In this survey, 62 NB816-excess (> 0.9 mag) and 21IA827-excess (> 0.8 mag) objects were found. Among them, we found 20NB816-excess and 4 IA827-excess Ly alpha emitter candidates. Therefore, itturns out that 42 NB816-excess and 17 IA827-excess objects are strongemission-line objects at lower redshift. Since 4 objects in the two low-zsamples are common, the total number of strong low-z emitters is 55. Applyingour photometric redshift technique, we identify 7 H alpha emitters at z~0.24,20 H beta-[OIII] ones at z~0.65, and 11 [OII] ones at z~1.19. However, wecannot determine reliable photometric redshifts of the remaining 17 emitters.The distributions of their rest frame equivalent widths are consistentlyunderstood with recent studies of galaxy evolution from z~1 to z~0.Comment: 28 pages, 8 figures, PASJ, Vol. 58, No. 1, in pres

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