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5 papers · 2 filters
Initial Size Distribution of the Galactic Globular Cluster System
Jihye Shin, Sungsoo Kim, Suk-Jin Yoon +1
Despite the importance of their size evolution in understanding the dynamical evolution of globular clusters (GCs) of the Milky Way, studies are rare that focus specifically on thi…
Variability at the Edge: Optical Near/IR Rapid Cadence Monitoring of Newly Outbursting FU Orionis Object HBC 722
Joel D. Green, Paul Robertson, Giseon Baek +7
We present the detection of day-timescale periodic variability in the r-band lightcurve of newly outbursting FU Orionis-type object HBC 722, taken from > 42 nights of observation w…
Water and Methanol Maser Activities in the NGC 2024 FIR 6 Region
Minho Choi, Miju Kang, Do-Young Byun +1
The NGC 2024 FIR 6 region was observed in the water maser line at 22 GHz and the methanol class I maser lines at 44, 95, and 133 GHz. The water maser spectra displayed several velo…
CO J=2-1 Observations toward the Supernova Remnant G54.1+0.3
Jung-Won Lee, Bon-Chul Koo, Jeong-Eun Lee
We present 12CO J = 2-1 line observations of G54.1+0.3, a composite supernova remnant with a mid-infrared (MIR) loop surrounding the central pulsar wind nebula (PWN). We mapped an…
Radio Imaging of the NGC 2024 FIR 5/6 Region: a Hypercompact H II Region Candidate in Orion
Minho Choi, Jeong-Eun Lee, Miju Kang
The NGC 2024 FIR 5/6 region was observed in the 6.9 mm continuum with an angular resolution of about 1.5 arcsec. The 6.9 mm continuum map shows four compact sources, FIR 5w, 5e, 6c…