Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Yiseul Jeon"'
Autor:
Jong-Hak Woo, Shu Wang, Suvendu Rakshit, Hojin Cho, Donghoon Son, Vardha N. Bennert, Elena Gallo, Edmund Hodges-Kluck, Tommaso Treu, Aaron J. Barth, Wanjin Cho, Adi Foord, Jaehyuk Geum, Hengxiao Guo, Yashashree Jadhav, Yiseul Jeon, Kyle M. Kabasares, Won-Suk Kang, Changseok Kim, Minjin Kim, Tae-Woo Kim, Huynh Anh N. Le, Matthew A. Malkan, Amit Kumar Mandal, Daeseong Park, Chance Spencer, Jaejin Shin, Hyun-il Sung, Vivian U, Peter R. Williams, Nick Yee
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 67 (2024)
We present the main results from a long-term reverberation mapping campaign carried out for the Seoul National University AGN Monitoring Project (SAMP). High-quality data were obtained during 2015–2021 for 32 luminous active galactic nuclei (AGNs;
Externí odkaz:
https://doaj.org/article/118912a1cbc54503bede1a5a195ee352
Autor:
Hojin Cho, Jong-Hak Woo, Shu Wang, Donghoon Son, Jaejin Shin, Suvendu Rakshit, Aaron J. Barth, Vardha N. Bennert, Elena Gallo, Edmund Hodges-Kluck, Tommaso Treu, Hyun-Jin Bae, Wanjin Cho, Adi Foord, Jaehyuk Geum, Yashashree Jadhav, Yiseul Jeon, Kyle M. Kabasares, Daeun Kang, Wonseok Kang, Changseok Kim, Donghwa Kim, Minjin Kim, Taewoo Kim, Huynh Anh N. Le, Matthew A. Malkan, Amit Kumar Mandal, Daeseong Park, Songyoun Park, Hyun-il Sung, Vivian U, Peter R. Williams
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 2, p 142 (2023)
The broad-line region (BLR) size–luminosity relation has paramount importance for estimating the mass of black holes in active galactic nuclei (AGNs). Traditionally, the size of the H β BLR is often estimated from the optical continuum luminosity
Externí odkaz:
https://doaj.org/article/d5b61d4a8a724fddba8a0f1a97c1f8dc
Autor:
Yongjung Kim, Myungshin Im, Yiseul Jeon, Minjin Kim, Linhua Jiang, Suhyun Shin, Changsu Choi, Minhee Hyun, Hyunsung D. Jun, Dohyeong Kim, Duho Kim, Jae-Woo Kim, Ji Hoon Kim, Bumhyun Lee, Seong-Kook Lee, Juan Molina, Soojong Pak, Won-Kee Park, Yoon Chan Taak, Yongmin Yoon
We present the result of the Infrared Medium-deep Survey (IMS) $z\sim6$ quasar survey, using the combination of the IMS near-infrared images and the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) optical images. The traditional color-selection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9300b40e00153bf2644bf033d30218ae
Autor:
Sungyong Hwang, Jae-Woo Kim, Seoyeon Byeon, Myungshin Im, Tae Geun Ji, Gregory S. H. Paek, Minjin Kim, Hyunsung David Jun, Marios Karouzos, Yongjung Kim, Yongmin Yoon, Yiseul Jeon, Changsu Choi, Yoon Chan Taak, Seong Kook Lee, Won Kee Park, Soojong Pak, Suhyun Shin, Insu Paek, Linhua Jiang, Jueun Hong, Woojin Park, Gu Lim, S. B. Kim, Hye In Lee, Minhee Hyun, Joonho Kim, D.-J. Kim, Ji-Hoon Kim, Dohyeong Kim
Faint $z\sim5$ quasars with $M_{1450}\sim-23$ mag are known to be the potentially important contributors to the ultraviolet ionizing background in the post-reionization era. However, their number density has not been well determined, making it diffic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a38467d9500b29c92d9aa4cfd2544da
Autor:
Changbom Park, Myungshin Im, Yongmin Yoon, Minhee Hyun, Ji-Hoon Kim, Peter Eisenhardt, Yiseul Jeon, Jae-Woo Kim, Duho Kim, Hyunsung David Jun, Jueun Hong
Publikováno v:
The Astrophysical Journal. 920:74
Autor:
Jueun Hong, Jae-Woo Kim, Duho Kim, Minjin Kim, Ji Hoon Kim, Yongjung Kim, Changsu Choi, Joonho Kim, Marios Karouzos, Sungyong Hwang, Seoyeon Byeon, Suhyun Shin, Tae-Geun Ji, Woojin Park, Won-Kee Park, Insu Paek, Yongmin Yoon, Soojong Pak, S. B. Kim, Yiseul Jeon, Minhee Hyun, Hyunsung David Jun, Seong-Kook Lee, Yoon Chan Taak, Gu Lim, Hye-In Lee, Dohyeong Kim, Myungshin Im
The faint quasars with $M_{1450}>-24$ mag are known to hold the key to the determination of the ultraviolet emissivity for the cosmic re-ionization. But only a few have been identified so far because of the limitations on the survey data. Here, we pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98ca062c51655e05b1afdfe82f936260
http://arxiv.org/abs/1811.08606
http://arxiv.org/abs/1811.08606
Autor:
Sanghyuk Kim, Minhee Hyun, Yongjung Kim, Woojin Park, Hye-In Lee, Yiseul Jeon, Myungshin Im, Soojong Pak
Publikováno v:
Journal of The Korean Astronomical Society. 49:25-35
Multiple color selection techniques have been successful in identifying quasars from wide-field broad-band imaging survey data. Among the quasars that have been discovered so far, however, there is a redshift gap at $5 \lesssim {\rm z} \lesssim 5.7$
Autor:
Songyoun Park, Minjin Kim, Edmund Hodges-Kluck, Huynh Anh N. Le, Marios Karouzos, Adi Foord, Wanjin Cho, Taewoo Kim, Matthew A. Malkan, Hyun-Il Sung, Vivienne F. Baldassare, Jaejin Shin, Daeseong Park, Wonseok Kang, Daeun Kang, Elena Gallo, Hojin Cho, Vardha N. Bennert, Suvendu Rakshit, Donghoon Son, Hyun-Jin Bae, Yiseul Jeon, Jong-Hak Woo
Publikováno v:
The Astrophysical Journal, vol 886, iss 2
ASTROPHYSICAL JOURNAL, vol 886, iss 2
ASTROPHYSICAL JOURNAL, vol 886, iss 2
Active galactic nuclei (AGNs) show a correlation between the size of the broad line region (BLR) and the monochromatic continuum luminosity at 5100 \AA, allowing black hole mass estimation based on single-epoch spectra. However, the validity of the c
Publikováno v:
Journal of The Korean Astronomical Society. 48:177-185
We develop a new auto-guiding system for the Camera for QUasars in the EArly uNiverse (CQUEAN). CQUEAN is an optical CCD camera system attached to the 2.1-m Otto-Struve Telescope (OST) at McDonald Observatory, USA. The new auto-guiding system differs
Autor:
Yiseul Jeon, Myungshin Im
Publikováno v:
Publications of The Korean Astronomical Society. 30:405-407
We describe a survey of quasars in the early universe, beyond z ∼ 5, which is one of the main science goals of the Infrared Medium-deep Survey (IMS) conducted by the Center for the Exploration of the Origin of the Universe (CEOU). We use multi-wave