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The Subaru Seminar is usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you are interested in giving a seminar, please contact Subaru seminar organizers (Tomonori Usuda, Kumiko S. Usuda, Masayuki Akiyama) by email : (please change"_at" to @).

October 31, Tuesday at 11:00am

" Formation of Massive Galaxies in the Growing Large-Scale Structure at High Redshift "

Toru Yamada

(SUBARU Telescope)

With Subaru, and other facilities, we are now probing the significantly large volume of the Universe at high redshift to witness or approach to the rather (hopefully) complete view of the history of the galaxy-scale structure formation.
In this talk, we present our recent new results of the wide-field optical/infrared imaging and spectroscopic survey for galaxies at z=3.1 in/around SSA22 area.
Suprime Cam narrow-band image over the 1.5 sq. deg, or ~ 200Mpc (comoving) at the largest side, tells us the whole environments and the significance of the large-scale high-density region of the star-forming galaxies, compared with the similary deep narrow-band imaging in the general control fields. It was turned out that the highest density 'peak' with ~20Mpc scale (~1 SCam FOV!) has the overdensity of ~4 at z=3.1.
We also spectroscopically mapped a part of these structures with FOCAS, DEIMOS (Keck), and VIMOS (VLT) to understand the 3D density distribution of LyAlpha emitters as well as to investigate various spectroscopic properties (e.g., line width) of the very interesting targets such as extended Lyman Alpha Blobs, which are the candidates of massive galaxies in their forming phase, as well as a new class of interesting objects, the Very Large LyA Equivalent-Width Galaxies.
As the region has been mapped with the infrared facilities/projects such as Spitzer, WFCAM (UKIRT/UKIDSS), MOIRCS, I also briefly touch with the infrared view of this region.

The many of the work has been made in collabolation with Yuichi Matsuda (Kyoto) , Tomoki Hayashino (Tohoku), and colleagues in the projects.

Related Previous Papers;
Matsuda, Yamada et al. 2004, AJ, 128, 569
Matsuda, Yamada et al. 2005, ApJ, 634, L125
Matsuda, Yamada, et al. 2006, ApJ, 640, L123

Seminars are also held at JAC, CFHT, and IfA.

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