Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Carlos Contreras Peña"'
Autor:
Geumsook Park, Doug Johnstone, Carlos Contreras Peña, Jeong-Eun Lee, Sheng-Yuan Liu, Gregory Herczeg, Steve Mairs, Zhiwei Chen, Jennifer Hatchell, Kee-Tae Kim, Mi-Ryang Kim, Keping Qiu, Yao-Te Wang, Xu Zhang, The JCMT Transient Team
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 122 (2024)
We present a comprehensive analysis of young stellar object (YSO) variability within the M17 Southwest Extension (M17 SWex), using 3.5 yr of monitoring data from the James Clerk Maxwell Telescope (JCMT) Transient Survey at submillimeter and 9 yr from
Externí odkaz:
https://doaj.org/article/ed04094cc26b432bb716c9e16b0f4ecc
Autor:
Sieun Lee, Jeong-Eun Lee, Carlos Contreras Peña, Doug Johnstone, Gregory Herczeg, Seonjae Lee
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 38 (2024)
Variability in the brightness of young stellar objects (YSOs) is a common phenomenon that can be caused by changes in various factors, including accretion, extinction, disk morphology, interactions between the disk and the stellar photosphere, and th
Externí odkaz:
https://doaj.org/article/7c10ed44990f49c592d51c115eea3f52
Autor:
Chul-Hwan Kim, Jeong-Eun Lee, Carlos Contreras Peña, Doug Johnstone, Gregory J. Herczeg, John J. Tobin, Neal J. Evans II
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 108 (2024)
Protostellar outflows often present a knotty appearance, providing evidence of sporadic accretion in stellar mass growth. To understand the direct relation between mass accretion and ejection, we analyze the contemporaneous accretion activity and ass
Externí odkaz:
https://doaj.org/article/b288e840fe7f4197af2dd4e09acfd557
Autor:
Mu-Tian Wang, Gregory J. Herczeg, Hui-Gen Liu, Min Fang, Doug Johnstone, Ho-Gyu Lee, Frederick M. Walter, Franz-Josef Hambsch, Carlos Contreras Peña, Jeong-Eun Lee, Mervyn Millward, Andrew Pearce, Berto Monard, Lihang Zhou
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 2, p 113 (2023)
EX Lup is the archetype for the class of young stars that undergoes repeated accretion outbursts of ∼5 mag at optical wavelengths that last for months. Despite extensive monitoring that dates back 130 yr, the accretion history of EX Lup remains mos
Externí odkaz:
https://doaj.org/article/67ed1f34b52142599ef211c9caed81e2
Autor:
Matthew L. N. Ashby, Joseph L. Hora, Kiran Lakshmipathaiah, Sarita Vig, Rama Krishna Sai Subrahmanyam Gorthi, Miju Kang, Volker Tolls, Gary J. Melnick, Michael W. Werner, Brendan P. Crill, Daniel C. Masters, Carlos Contreras Peña, Jeong-Eun Lee, Jaeyeong Kim, Ho-Gyu Lee, Sung-Yong Yoon, Soung-Chul Yang, Nicholas Flagey, Bertrand Mennesson
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 105 (2023)
One of the primary objectives of the SPHEREx mission is to understand the origin of molecules such as H _2 O, CO _2 , and other volatile compounds at the early stages of planetary system formation. Because the vast majority of these compounds—typic
Externí odkaz:
https://doaj.org/article/7181e7dee674455c9e6b79ef904ca035
Autor:
Carlos Contreras Peña, Gregory J Herczeg, Mizna Ashraf, Jessy Jose, Ho-Gyu Lee, Doug Johnstone, Jeong-Eun Lee, Xing-yu Zhou, Hanpu Liu, Sung-Yong Yoon
Mid-infrared (mid-IR) variability in young stellar objects (YSOs) is driven by several physical mechanisms, which produce a variety of amplitudes and light curve shapes. One of these mechanisms, variable disk accretion is predicted by models of episo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae9f6628f01dd380a0e3311448410596
Autor:
Hanpu Liu, Gregory J. Herczeg, Doug Johnstone, Carlos Contreras-Peña, Jeong-Eun Lee, Haifeng Yang, Xingyu Zhou, Sung-Yong Yoon, Ho-Gyu Lee, Masanobu Kunitomo, Jessy Jose
FU Ori type objects (FUors) are decades-long outbursts of accretion onto young stars that are strong enough to viscously heat disks so that the disk outshines the central star. We construct models for FUor objects by calculating emission components f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16b994c26542faa6460b44e812f74501
http://arxiv.org/abs/2207.13324
http://arxiv.org/abs/2207.13324
Autor:
Logan Francis, Doug Johnstone, Jeong-Eun Lee, Gregory J. Herczeg, Feng Long, Steve Mairs, Carlos Contreras Peña, Gerald Moriarty-Schieven
Protostars likely accrete material at a highly time variable rate, however, measurements of accretion variability from the youngest protostars are rare, as they are still deeply embedded within their envelopes. Sub-mm/mm observations can trace the th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4b9d277300248687d6b6917d6f59837
Autor:
Jonathan M. C. Rawlings, Helen Kirk, Dipen Sahu, Oscar Morata, Samuel Pearson, Yuri Aikawa, James Lane, Aashish Gupta, Jaehan Bae, Fujun Du, Shu-ichiro Inutsuka, Daniel Harsono, Geumsook Park, Giseon Baek, Yi-Jehng Kuan, Geoffrey C. Bower, Gregory J. Herczeg, Spencer Plovie, Aleks Scholz, Doug Johnstone, Chin-Fei Lee, Zhen Guo, Hsien Shang, Hyunju Yoo, Graham S. Bell, Jeong-Eun Lee, Yong-Hee Lee, Carlos Contreras-Peña, Woojin Kwon, Paula S. Teixeira, Sheng-Yuan Liu, Gerald H. Moriarty-Schieven, Bhavana Lalchand, Somnath Dutta, Jan Forbrich, Ziyan Xu, Shih-Yun Tang, Huei-Ru Vivien Chen, Dimitris Stamatellos, Jennifer Hatchell, Colton Broughton, Tim Naylor, Wen Ping Chen, Yao-Te Wang, Tanvi Sharma, Tyler L. Bourke, Andy Pon, Steve Mairs, Shih-Ping Lai, Logan Francis, Miju Kang, Scott Chapman, Tie Liu
We present the four-year survey results of monthly submillimeter monitoring of eight nearby ($< 500 $pc) star-forming regions by the JCMT Transient Survey. We apply the Lomb-Scargle Periodogram technique to search for and characterize variability on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e4f1c59752b69b4df00540c0289c176
https://clok.uclan.ac.uk/42661/1/Lee_2021_ApJ_920_119.pdf
https://clok.uclan.ac.uk/42661/1/Lee_2021_ApJ_920_119.pdf
Autor:
Gregory J. Herczeg, Dimitris Stamatellos, Carlos Contreras Peña, Giseon Baek, Jeong-Eun Lee, B. A. Macfarlane, Huei-Ru Vivien Chen, Watson P. Varricatt, Doug Johnstone, Klaus W. Hodapp, Sung-ju Kang
In the episodic accretion scenario, a large fraction of the protostellar mass accretes during repeated and large bursts of accretion. Since outbursts on protostars are typically identified at specific wavelengths, interpreting these outbursts require
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::293294e71978406f524db32fbc7d5cea
http://arxiv.org/abs/2004.05600
http://arxiv.org/abs/2004.05600