The Intermediate-Band Dropout Method: A New Method to Search for High-Redshift Galaxies | Zendy

Yasuhiro Shioya | Zendy; Yoshiaki Taniguchi | Zendy; M. Ajiki | Zendy; Tohru Nagao | Zendy; Takashi Murayama | Zendy; Shunji Sasaki | Zendy; Ryoko Sumiya | Zendy; Yuichiro Hatakeyama | Zendy

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The Intermediate-Band Dropout Method: A New Method to Search for High-Redshift Galaxies

Author(s) -

Yasuhiro Shioya,

Yoshiaki Taniguchi,

M. Ajiki,

Tohru Nagao,

Takashi Murayama,

Shunji Sasaki,

Ryoko Sumiya,

Yuichiro Hatakeyama

Publication year - 2005

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/57.2.287

Subject(s) - physics , astrophysics , redshift , galaxy , subaru telescope , astronomy , dropout (neural networks) , stars , spectral line , spectrograph , machine learning , computer science

We propose a new method to search for high-redshift galaxies that is based onan intermediate-band dropout technique rather than the usual broad-band dropoutone. In this method, we use an intermediate-band filter whose centralwavelength is longer than 7000 \AA. This new method makes it possible todistinguish both very late-type stars such as L and T dwarfs and dusty galaxiesat intermediate redshift from real high-$z$ Lyman break galaxies. The reasonfor this is that such interlopers do not show strong intermediate-banddepression although they have very red broad-band colors that are indicative ofLyman break galaxies. Applying our new method to imaging data sets obtainedwith the Suprime-Cam on the Subaru Telescope, we find a new sample of Lymanbreak galaxies at $z \simeq 5$.Comment: 15 pages, 5 figures, PASJ, Vol.57, No.2, in pres

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