Zobrazeno 1 - 10
of 915
pro vyhledávání: '"Chun, So Hyun"'
Autor:
Lim, Dongwook, Chun, Sang-Hyun, Lee, Young-Wook, Chung, Chul, Koch-Hansen, Andreas J., Hong, Seungsoo
Context. With the increasing number of discoveries of globular clusters in the inner Milky Way, the need for spectroscopic confirmation and further investigation of their stellar populations and chemodynamical properties has become crucial. Aims. Gra
Externí odkaz:
http://arxiv.org/abs/2410.21578
Young massive star clusters, like the six red supergiant clusters in the Scutum complex, provide valuable insights into star-formation and galaxy structures. We investigated the high-resolution near-infrared spectra of 60 RSG candidates in these clus
Externí odkaz:
http://arxiv.org/abs/2403.13993
Wide binaries, with separations between two stars from a few AU to more than several thousand AU, are valuable objects for various research topics in Galactic astronomy. As the number of newly reported wide binaries continues to increase, studying th
Externí odkaz:
http://arxiv.org/abs/2311.08461
Autor:
Van Dyk, Schuyler D., Srinivasan, Sundar, Andrews, Jennifer E., Soraisam, Monika, Szalai, Tamas, Howell, Steve B., Isaacson, Howard, Matheson, Thomas, Petigura, Erik, Scicluna, Peter, Stephens, Andrew W., Van Zandt, Judah, Zheng, WeiKang, Chun, Sang-Hyun, Filippenko, Alexei V.
We follow our first paper with an analysis of the ensemble of the extensive pre-explosion ground- and space-based infrared observations of the red supergiant (RSG) progenitor candidate for the nearby core-collapse supernova SN 2023ixf in Messier 101,
Externí odkaz:
http://arxiv.org/abs/2308.14844
Autor:
Soraisam, Monika D., Szalai, Tamás, Van Dyk, Schuyler D., Andrews, Jennifer E., Srinivasan, Sundar, Chun, Sang-Hyun, Matheson, Thomas, Scicluna, Peter, Vasquez-Torres, Diego A.
Observational evidence points to a red supergiant (RSG) progenitor for SN 2023ixf. The progenitor candidate has been detected in archival images at wavelengths (>0.6 micron) where RSGs typically emit profusely. This object is distinctly variable in t
Externí odkaz:
http://arxiv.org/abs/2306.10783
Autor:
Park, Tae Gwan, Baek, Seungil, Park, Junho, Shin, Eui-Cheol, Na, Hong Ryeol, Oh, Eon-Taek, Chun, Seung-Hyun, Kim, Yong-Hyun, Lee, Sunghun, Rotermund, Fabian
Reversible control of the topological invariants from nontrivial to trivial states has fundamental implications for quantum information processors and spintronics, by realizing of an on/off switch for robust and dissipationless spin-current. Although
Externí odkaz:
http://arxiv.org/abs/2306.09766
We report a spectroscopic study on red supergiant stars (RSGs) in the irregular dwarf galaxy IC 1613 in the Local Group. We derive the effective temperatures ($T_\mathrm{eff}$) and metallicities of 14 RSGs by synthetic spectral fitting to the spectra
Externí odkaz:
http://arxiv.org/abs/2210.10608
Publikováno v:
A&A 666, A62 (2022)
Globular clusters (GCs) play an important role in the formation and evolution of the Milky Way. New candidates are continuously found, particularly in the high-extinction low-latitude regions of the bulge, although their existence and properties have
Externí odkaz:
http://arxiv.org/abs/2208.02887
Autor:
Byun, Woowon, Ko, Jongwan, Kim, Yunjong, Seon, Kwang-Il, Chang, Seunghyuk, Kim, Dohoon, Choi, Changsu, Chun, Sang-Hyun, Jeon, Young-Beom, Kim, Jae-Woo, Lee, Chung-Uk, Lee, Yongseok, Park, Hong Soo, Sung, Eon-Chang, Yoo, Jaewon, Lee, Gayoung, Lee, Hyoungkwon
In a $\Lambda$CDM universe, most galaxies evolve by mergers and accretions, leaving faint and/or diffuse structures, such as tidal streams and stellar halos. Although these structures are a good indicator of galaxies' recent mass assembly history, th
Externí odkaz:
http://arxiv.org/abs/2207.14553
Autor:
Lee, Jun-Uk, Park, So Yoon, Lee, Kwansoo, Farzana, Sumaiya, Chun, Ho Hyun, Shin, Bo-Sung, Lee, Patrick C.
Publikováno v:
In Carbon November 2024 230
