Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Sang Gak Lee"'
Autor:
Hyung-Il Oh, Jeong-Eun Lee, Sunkyung Park, Hyun-Il Sung, Tae-Soo Pyo, Daniel T. Jaffe, Gregory N. Mace, Wonseok Kang, Sung-Yong Yoon, Tae Seog Yoon, Sang-Gak Lee, Joel D. Green
We present the results of high-resolution (R $\ge$ 30,000) optical and near-infrared spectroscopic monitoring observations of a FU Orionis-type object, V960 Mon, which underwent an outburst in 2014 November. We have monitored this object with the Boh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82f92e4611523beb6557d0901fbedc3f
Publikováno v:
Journal of The Korean Astronomical Society. 49:175-192
CCD photometric observations of the globular cluster (GC), M53 (NGC 5024), are performed using the 1.8 m telescope at the Bohyunsan Optical Astronomy Observatory in Korea on the same nights (2002 April and 2003 May) as the observations of the GC M92
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d6ce2f2e979c56a732d620730818b8c
https://doi.org/10.5303/jkas.2016.49.5.175
https://doi.org/10.5303/jkas.2016.49.5.175
Publikováno v:
Journal of The Korean Astronomical Society. 48:333-341
A search for hot and bright white dwarfs (WDs) in the Milky Way globular clusters M13 (NGC 6205) and M22 (NGC 6656) is carried out using the deep and homogeneous V I photometric catalog of Anderson et al. and and Sarajedini et al., based on data take
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b95e4b3aa12fe45a405f62441eecc34
https://doi.org/10.5303/jkas.2015.48.6.333
https://doi.org/10.5303/jkas.2015.48.6.333
Autor:
Won Kee Park, Dong Hwan Cho, Keun Hong Park, Tae Seog Yoon, Wonseok Kang, Sang Gak Lee, Hyun Il Sung, Yuna Yang, Jeong-Eun Lee, Sunkyung Park
Publikováno v:
Journal of The Korean Astronomical Society. 46:253-259
We present near-infrared light curves of HBC 722 after its the September 2010 outburst. We have been monitoring its near-infrared light curves since November 2010 with Korean Astronomy and Space Science Institute Infrared Camera System (KASINICS). HB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdb64a510a05c54d8d1cfbb66a752b2f
https://doi.org/10.5303/jkas.2013.46.6.253
https://doi.org/10.5303/jkas.2013.46.6.253
Autor:
Wonseok Kang, Sang-Gak Lee
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 425:3162-3171
We present a tool for measuring the equivalent width (EW) in high-resolution spectra. The Tool for Automatic Measurement of Equivalent width (tame) provides the EWs of spectral lines by profile fitting in an automatic or interactive mode, which can y
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::152dbae78c2244160951728ad276ad93
https://doi.org/10.1111/j.1365-2966.2012.21613.x
https://doi.org/10.1111/j.1365-2966.2012.21613.x
Autor:
Y.-B. Jeon, Byeong-Cheol Lee, Wonseok Kang, Joel D. Green, Sang-Gak Lee, Hwankyung Sung, Hyun-Il Sung, Jeong-Eun Lee
Publikováno v:
Journal of The Korean Astronomical Society. 44:67-72
We report the results of our high resolution optical spectroscopic monitoring campaign ($\lambda$ = 3800 -- 8800 A, R = 30000 -- 45000) of the new FU Orionis-type object HBC 722. We observed HBC 722 with the BOES 1.8-m telescope between 2010 November
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::261d81c076a276cf87bb5e13ba982efd
https://doi.org/10.5303/jkas.2011.44.2.67
https://doi.org/10.5303/jkas.2011.44.2.67
Autor:
Gregory N. Mace, Hwihyun Kim, Jae-Joon Lee, Kang-Min Kim, Moo-Young Chun, Chan Park, Wonseok Kang, Kyle F. Kaplan, Sang-Gak Lee, Sunkyung Park, Jae Sok Oh, In-Soo Yuk, Daniel T. Jaffe, Jeong-Eun Lee, Sungho Lee
Publikováno v:
The Astrophysical Journal Supplement Series. 238:29
We present a library of high-resolution (R $\equiv$ $\lambda$/$\Delta$$\lambda$ $\sim$ 45,000) and high signal-to-noise ratio (S/N $\geq$ 200) near-infrared spectra for stars of a wide range of spectral types and luminosity classes. The spectra were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0f778d38da3969d419c930ac3ae5eb0
https://doi.org/10.3847/1538-4365/aadd14
https://doi.org/10.3847/1538-4365/aadd14
Autor:
Myung Gyoon Lee, Hong Soo Park, Young-Wook Lee, Soo-Chang Rey, Young-Jong Sohn, Ho Seong Hwang, Sang-Gak Lee, Ho-Il Kim, Jang-Hyun Park, Sang Chul Kim
Publikováno v:
The Astrophysical Journal. 674:857-868
We present the measurement of radial velocities for globular clusters in M60, giant elliptical galaxy in the Virgo cluster. Target globular cluster candidates were selected using the Washington photometry based on the deep $16\arcmin \times 16\arcmin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ab1e5aa8ca9707fa9e40bd0e007ff12
https://doi.org/10.1086/522956
https://doi.org/10.1086/522956
Publikováno v:
Publications of The Korean Astronomical Society. 22:133-140
We have determined the disk size of Be stars by using emission. We observed spectra of Be stars with telescope in SNU, equipped with SB SGS (Santa Babara Self Guided Spectrograph) and CCD ST-8. The size of disk of Be stars was estimated with the Be s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb08a70b5bf1a84a77b4dc7e040ab386
https://doi.org/10.5303/pkas.2007.22.4.133
https://doi.org/10.5303/pkas.2007.22.4.133
Publikováno v:
The Astronomical Journal. 133:2163-2178
We carried out wide-field BVI CCD photometric observations of the GCs M3 and M13 using the BOAO 1.8 m telescope equipped with a 2K CCD. We present CMDs of M3 and M13. We have found AGB bumps at V = 14.85 for M3 at V = 14.25 for M13. It is found that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac08a957e3dd2cc158bdf39ebc27ac3f
https://doi.org/10.1086/513315
https://doi.org/10.1086/513315