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18 papers · 1 filter
Connecting the Physical Properties of Galaxies with the Overdensity and Tidal Shear of the Large-Scale Environment
Jounghun Lee, Cheng Li
We have examined the correlations between the large-scale environment of galaxies and their physical properties, using a sample of 28,354 nearby galaxies drawn from the Sloan Digit…
Seoul National University Bright Quasar Survey in Optical (SNUQSO) I: First Phase Observations and Results
Induk Lee, Myungshin Im, Minjin Kim +7
We present results from the first phase of the Seoul National University Bright Quasar Survey in Optical (SNUQSO) as well as its basic observational setup. Previous and current lar…
First-Year Spectroscopy for the SDSS-II Supernova Survey
Chen Zheng, Roger W. Romani, Masao Sako +77
This paper presents spectroscopy of supernovae discovered in the first season of the Sloan Digital Sky Survey-II Supernova Survey. This program searches for and measures multi-band…
Galaxy Orbits for Galaxy Clusters in Sloan Digital Sky Survey and 2dF Galaxy Redshift Survey
Ho Seong Hwang, Myung Gyoon Lee
We present the results of a study for galaxy orbits in galaxy clusters using a spectroscopic sample of galaxies in Sloan Digital Sky Survey (SDSS) and 2dF Galaxy Redshift Survey (2…
A Catalog of Bright Star Clusters in the Interacting Galaxy M51
Narae Hwang, Myung Gyoon Lee
We present a catalog of star clusters with V_{F555W}<23 mag detected in the interacting spiral galaxy M51 system based on the mosaic images taken with HST ACS by the Hubble Heritag…
Galactic 511 keV line from MeV millicharged dark matter
Ji-Haeng Huh, Jihn E. Kim, Jong-Chul Park +1
We present a possible explanation of the recently observed 511 keV -ray anomaly with a new ``millicharged'' fermion. The new fermion is light () but has nev…