4.3k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Seoul National UniversityKR1.2k papers
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168 papers · 1 filter
De-Trending Time Series for Astronomical Variability Surveys
Dae-Won Kim, Pavlos Protopapas, Charles Alcock +2
We present a de-trending algorithm for the removal of trends in time series. Trends in time series could be caused by various systematic and random noise sources such as cloud pass…
Molecular gas and star formation in the red-sequence counter-rotating disc galaxy NGC 4550
Alison F. Crocker, Hyunjin Jeong, Shinya Komugi +4
We present observations of the CO(1-0) emission in the central 750 pc (10 arcsec) of the counter-rotating disc galaxy NGC 4550, obtained at the Institut de Radioastronomie Millimet…
The Correlation of Star Formation Quenching with Internal Galaxy Properties and Environment
Taysun Kimm, Rachel S. Somerville, Sukyoung K. Yi +8
We investigate the correlation of star formation quenching with internal galaxy properties and large scale environment (halo mass) in empirical data and theoretical models. We make…
Star Formation Rates and Metallicities of K-selected Star Forming Galaxies at z~2
Masao Hayashi, Kentaro Motohara, Kazuhiro Shimasaku +7
We present spectroscopy of 15 star-forming BzK galaxies (sBzKs) with K(AB)<23 in the Subaru Deep Field, for which Halpha and some other emission lines are detected in 0.9 to 2.3 mi…
Destruction of Molecular Gas Reservoirs in Early-Type Galaxies by Active Galactic Nucleus Feedback
Kevin Schawinski, Chris J. Lintott, Daniel Thomas +11
Residual star formation at late times in early-type galaxies and their progenitors must be suppressed in order to explain the population of red, passively evolving systems we see t…
First Results From The Taiwanese-American Occultation Survey (TAOS)
Z. -W. Zhang, F. B. Bianco, M. J. Lehner +22
Results from the first two years of data from the Taiwanese-American Occultation Survey (TAOS) are presented. Stars have been monitored photometrically at 4 Hz or 5 Hz to search fo…
VLBI Astrometry of AGB Variables with VERA -- A Semiregular Variable S Crateris --
Akiharu Nakagawa, Miyuki Tsushima, Kazuma Ando +40
We present a distance measurement for the semiregular variable S Crateris (S Crt) based on its annual parallax. With the unique dual beam system of the VLBI Exploration for Radio A…
Distance to VY Canis Majoris with VERA
Yoon Kyung Choi, Tomoya Hirota, Mareki Honma +33
We report astrometric observations of H2O masers around the red supergiant VY Canis Majoris (VY CMa) carried out with VLBI Exploration of Radio Astrometry (VERA). Based on astromet…
Astrometry of HO Masers in Nearby Star-Forming Regions with VERA. III. IRAS 22198+6336 in L1204G
Tomoya Hirota, Kazuma Ando, Takeshi Bushimata +35
We present results of multi-epoch VLBI observations with VERA (VLBI Exploration of Radio Astrometry) of the 22 GHz HO masers associated with a young stellar object (YSO) IRAS…
Compact stellar systems in the Fornax cluster: a UV perspective
Steffen Mieske, Michael Hilker, Dominik J. Bomans +4
In recent years, increasing evidence for chemical complexity and multiple stellar populations in massive globular clusters (GCs) has emerged, including extreme horizontal branches…
Distance to NGC 281 in a Galactic Fragmenting Superbubble: Parallax Measurements with VERA
Mayumi Sato, Tomoya Hirota, Mareki Honma +30
We have used the Japanese VLBI array VERA to perform high-precision astrometry of an H2O maser source in the Galactic star-forming region NGC 281 West, which has been considered to…
LSST: from Science Drivers to Reference Design and Anticipated Data Products
Željko Ivezić, Steven M. Kahn, J. Anthony Tyson +310
(Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a sin…
A Suprime-Cam study of the stellar population of Ursa Major I dwarf spheroidal galaxy
Sakurako Okamoto, Nobuo Arimoto, Yoshihiko Yamada +1
We present deep and wide V, I CCD photometry of Ursa Major I (UMa I) dwarf spheroidal galaxy (dSph) in Local Group. The images of the galaxy were taken by Subaru/Suprime-Cam wide f…
Testing the AGB Scenario as the Origin of the Extreme-Helium Population in omega Centauri
Ena Choi, Sukyoung K. Yi
The most massive Galactic globular cluster, Omega centauri, appears to have multiple populations. Its bluest main sequence and extended horizontal branch stars are suggested to hav…
Lyman alpha emitting galaxies at 0.2 < z < 0.35 from GALEX spectroscopy
Jean-Michel Deharveng, Todd Small, Tom A. Barlow +19
The GALEX (Galaxy Evolution Explorer) spectroscopic survey mode, with a resolution of about 8 A in the FUV (1350 - 1750 A) and about 20 A in the NUV (1950 - 2750 A) is used for a s…
Supernova Shock Breakout from a Red Supergiant
Kevin Schawinski, Stephen Justham, Christian Wolf +21
Massive stars undergo a violent death when the supply of nuclear fuel in their cores is exhausted, resulting in a catastrophic "core-collapse" supernova. Such events are usually on…
Kinemetry of SINS High-Redshift Star-Forming Galaxies: Distinguishing Rotating Disks from Major Mergers
K. L. Shapiro, R. Genzel, N. M. Forster Schreiber +23
We present a simple set of kinematic criteria that can distinguish between galaxies dominated by ordered rotational motion and those involved in major merger events. Our criteria a…
The Taiwanese-American Occultation Survey: The Multi-Telescope Robotic Observatory
M. J. Lehner, C. -Y. Wen, J. -H. Wang +16
The Taiwanese-American Occultation Survey (TAOS) operates four fully automatic telescopes to search for occultations of stars by Kuiper Belt Objects. It is a versatile facility tha…
A cgi synthetic CMD calculator for the YY Isochrones
P. Demarque, S. N. Virani, E. J. Murphy +3
We describe a web-based cgi calculator for constructing synthetic color-magnitude diagrams for a simple stellar population (SSP) using the Yonsei-Yale (YY) isochrone data base. Thi…
On the Origin of Bimodal Horizontal-Branches in Massive Globular Clusters: The Case of NGC 6388 and NGC 6441
Suk-Jin Yoon, Seok-Joo Joo, Chang H. Ree +3
Despite the efforts of the past decade, the origin of the bimodal horizontal-branch (HB) found in some globular clusters (GCs) remains a conundrum. Inspired by the discovery of mul…
A Search for Extended Ultraviolet Disk (XUV-disk) Galaxies in the Local Universe
David A. Thilker, Luciana Bianchi, Gerhardt Meurer +26
We have initiated a search for extended ultraviolet disk (XUV-disk) galaxies in the local universe. Herein, we compare GALEX UV and visible--NIR images of 189 nearby (D40 Mpc) S…
Ultraviolet, Optical, and Infrared Constraints on Models of Stellar Populations and Dust Attenuation
Benjamin D. Johnson, David Schiminovich, Mark Seibert +19
The color of galaxies is a fundamental property, easily measured, that constrains models of galaxies and their evolution. Dust attenuation and star formation history (SFH) are the…
A Spectro-photometric Search for Galaxy Clusters in SDSS
Joo H. Yoon, Kevin Schawinski, Yun-Kyeong Sheen +2
Recent large-scale galaxy spectroscopic surveys, such as the Sloan Digital Sky Survey (SDSS), enable us to execute a systematic, relatively-unbiased search for galaxy clusters. Suc…
The UV-Optical Color Magnitude Diagram II: Physical Properties and Morphological Evolution On and Off of a Star-Forming Sequence
David Schiminovich, Ted K. Wyder, D. Christopher Martin +23
We use the UV-optical color magnitude diagram in combination with spectroscopic and photometric measurements derived from the SDSS spectroscopic sample to measure the distribution…