%0 Generic %1 ogura2017search %A Ogura, Kazuyuki %A Nagao, Tohru %A Imanishi, Masatoshi %A Kashikawa, Nobunari %A Taniguchi, Yoshiaki %A Kajisawa, Masaru %A Kobayashi, Masakazu A. R. %A Toba, Yoshiki %A Nobunara, Kodai %D 2017 %K absorbers correlation dla emitters lya %T A search for Ly-alpha emitters around a concentrated-region of strong Ly-alpha absorbers at z=2.3 %U http://arxiv.org/abs/1703.05756 %X In order to investigate the physical relationship between strong Ly-alpha absorbers (logN_HI>20.0 cm^-2) such as damped Ly-alpha absorption systems (DLAs) and young star-forming galaxies at high redshift, we have conducted narrow-band observations of Ly-alpha emitters (LAEs) in a concentrated region of strong Ly-alpha absorbers at z= 2.3, the J1230+34 field. Using a catalog of Ly-alpha absorbers with logN_HI>20.0 cm^-2 based on the baryon oscillation spectroscopic survey (BOSS), we found 6 fields where 3 or more absorbers are concentrated within a (50 Mpc)^3 cubic box in the comoving scale. Among them, we focus on the J1230+34 field, where 2 DLAs and 2 sub-DLAs present. Our narrow-band imaging observations with Subaru/Suprime-Cam using a custom-made filter, NB400 (lambda_c=4003 A and FWHM=92 A) yield a sample of 149 LAEs in this field. In the large scale (~50 Mpc), we have found no differences between the obtained Ly-alpha luminosity function and those in the blank fields at similar redshifts. We also compare the frequency distribution of the Ly-alpha rest-frame equivalent width (EW_0) in the target field and other fields including both overdensity region and blank field, but find no differences. On the other hand, in the small scale (~10 Mpc), we have found a possible overdensity of LAEs around a DLA with the highest HI column density (N_HI=21.08 cm^-2) in the target field while there are no density excess around the other absorbers with a lower N_HI.

@misc{ogura2017search, abstract = {In order to investigate the physical relationship between strong Ly-alpha absorbers (logN_HI>20.0 cm^-2) such as damped Ly-alpha absorption systems (DLAs) and young star-forming galaxies at high redshift, we have conducted narrow-band observations of Ly-alpha emitters (LAEs) in a concentrated region of strong Ly-alpha absorbers at z= 2.3, the J1230+34 field. Using a catalog of Ly-alpha absorbers with logN_HI>20.0 cm^-2 based on the baryon oscillation spectroscopic survey (BOSS), we found 6 fields where 3 or more absorbers are concentrated within a (50 Mpc)^3 cubic box in the comoving scale. Among them, we focus on the J1230+34 field, where 2 DLAs and 2 sub-DLAs present. Our narrow-band imaging observations with Subaru/Suprime-Cam using a custom-made filter, NB400 (lambda_c=4003 A and FWHM=92 A) yield a sample of 149 LAEs in this field. In the large scale (~50 Mpc), we have found no differences between the obtained Ly-alpha luminosity function and those in the blank fields at similar redshifts. We also compare the frequency distribution of the Ly-alpha rest-frame equivalent width (EW_0) in the target field and other fields including both overdensity region and blank field, but find no differences. On the other hand, in the small scale (~10 Mpc), we have found a possible overdensity of LAEs around a DLA with the highest HI column density (N_HI=21.08 cm^-2) in the target field while there are no density excess around the other absorbers with a lower N_HI.}, added-at = {2017-03-17T10:05:36.000+0100}, author = {Ogura, Kazuyuki and Nagao, Tohru and Imanishi, Masatoshi and Kashikawa, Nobunari and Taniguchi, Yoshiaki and Kajisawa, Masaru and Kobayashi, Masakazu A. R. and Toba, Yoshiki and Nobunara, Kodai}, biburl = {https://www.bibsonomy.org/bibtex/28f8c056fbe5100e6aff3b7f3fe581327/miki}, description = {[1703.05756] A search for Ly-alpha emitters around a concentrated-region of strong Ly-alpha absorbers at z=2.3}, interhash = {f9d715b3d3356897ddd8fc85c9c208e0}, intrahash = {8f8c056fbe5100e6aff3b7f3fe581327}, keywords = {absorbers correlation dla emitters lya}, note = {cite arxiv:1703.05756Comment: 15 pages, 15 figures, Accepted for publication to PASJ}, timestamp = {2017-03-17T10:05:36.000+0100}, title = {A search for Ly-alpha emitters around a concentrated-region of strong Ly-alpha absorbers at z=2.3}, url = {http://arxiv.org/abs/1703.05756}, year = 2017 }