%0 Generic %1 jeon2017infrared %A Jeon, Yiseul %A Im, Myungshin %A Kim, Dohyeong %A Kim, Yongjung %A Jun, Hyunsung David %A Pak, Soojong %A Taak, Yoon Chan %A Baek, Giseon %A Choi, Changsu %A Choi, Nahyun %A Hong, Jueun %A Hyun, Minhee %A Ji, Tae-Geun %A Karouzos, Marios %A Kim, Duho %A Kim, Jae-Woo %A Kim, Ji Hoon %A Kim, Minjin %A Kim, Sanghyuk %A Lee, Hye-In %A Lee, Seong-Kook %A Park, Won-Kee %A Park, Woojin %A Yoon, Yongmin %D 2017 %K high-z quasars z~5 %T The Infrared Medium-deep Survey. III. Survey of Luminous Quasars at 4.7 $łeq$ z $łeq$ 5.4 %U http://arxiv.org/abs/1706.08454 %X We present our first results of the survey for high redshift quasars at $5 z 5.7$. The search for quasars in this redshift range has been known to be challenging due to limitations of filter sets used in previous studies. We conducted a quasar survey for two specific redshift ranges, 4.60 $łeq$ z $łeq$ 5.40 and 5.50 $łeq$ z $łeq$ 6.05, using multi-wavelength data that include observations using custom-designed filters, $is$ and $iz$. Using these filters and a new selection technique, we were able to reduce the fraction of interlopers. Through optical spectroscopy, we confirmed seven quasars at 4.7 $łeq$ z $łeq$ 5.4 with $-27.4 < M_1450 < -26.4$ which were discovered independently by another group recently. We estimated black hole masses and Eddington ratios of four of these quasars from optical and near-infrared spectra, and found that these quasars are undergoing nearly Eddington-limited accretion which is consistent with the rapid growth of supermassive black holes in luminous quasars at z $\sim$ 5.

@misc{jeon2017infrared, abstract = {We present our first results of the survey for high redshift quasars at $5 \lesssim {\rm z} \lesssim 5.7$. The search for quasars in this redshift range has been known to be challenging due to limitations of filter sets used in previous studies. We conducted a quasar survey for two specific redshift ranges, 4.60 $\leq$ z $\leq$ 5.40 and 5.50 $\leq$ z $\leq$ 6.05, using multi-wavelength data that include observations using custom-designed filters, $is$ and $iz$. Using these filters and a new selection technique, we were able to reduce the fraction of interlopers. Through optical spectroscopy, we confirmed seven quasars at 4.7 $\leq$ z $\leq$ 5.4 with $-27.4 < M_{1450} < -26.4$ which were discovered independently by another group recently. We estimated black hole masses and Eddington ratios of four of these quasars from optical and near-infrared spectra, and found that these quasars are undergoing nearly Eddington-limited accretion which is consistent with the rapid growth of supermassive black holes in luminous quasars at z $\sim$ 5.}, added-at = {2017-06-27T10:28:36.000+0200}, author = {Jeon, Yiseul and Im, Myungshin and Kim, Dohyeong and Kim, Yongjung and Jun, Hyunsung David and Pak, Soojong and Taak, Yoon Chan and Baek, Giseon and Choi, Changsu and Choi, Nahyun and Hong, Jueun and Hyun, Minhee and Ji, Tae-Geun and Karouzos, Marios and Kim, Duho and Kim, Jae-Woo and Kim, Ji Hoon and Kim, Minjin and Kim, Sanghyuk and Lee, Hye-In and Lee, Seong-Kook and Park, Won-Kee and Park, Woojin and Yoon, Yongmin}, biburl = {https://www.bibsonomy.org/bibtex/2546e0c7a788f3afec89e60f575f9997e/miki}, description = {[1706.08454] The Infrared Medium-deep Survey. III. Survey of Luminous Quasars at 4.7 $\leq$ z $\leq$ 5.4}, interhash = {1e202d752b0cc4415042d84ac3679905}, intrahash = {546e0c7a788f3afec89e60f575f9997e}, keywords = {high-z quasars z~5}, note = {cite arxiv:1706.08454Comment: 16 pages, 12 figures, and 9 tables. Accepted for publication in ApJS}, timestamp = {2017-06-27T10:28:36.000+0200}, title = {The Infrared Medium-deep Survey. III. Survey of Luminous Quasars at 4.7 $\leq$ z $\leq$ 5.4}, url = {http://arxiv.org/abs/1706.08454}, year = 2017 }