activity
19972015
most citedDistance and Proper Motion Measurement of the Red Supergiant, S Persei, with VLBI H2O Maser Astrometry

63 citations · 826 across the 42 of their papers we have counts for

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29 papers · 1 filter

astro-ph2008

Clustering of Meter-wave Luminous Objects toward Monoceros

Shuji Deguchi, Kazutaka Koike

A distribution of the meter-wave luminous objects, which are bright at frequency 74 MHz (a wavelength of 4 m) but not detectable at 1.4 GHz (21 cm) in the VLA surveys, shows a nota…

astro-ph2008

Molecular Line Observations of the SiO Maser Source IRAS 19312+1950

Jun-ichi Nakashima, Shuji Deguchi, Hiroshi Imai +1

IRAS 19312+1950 is a unique SiO maser source, exhibiting a rich set of molecular radio lines, although SiO maser sources are usually identified as oxygen-rich evolved stars, in whi…

astro-ph2007★ 4 cited

JVN observations of H2O masers around the evolved star IRAS 22480+6002

H. Imai, T. Fujii, T. Omodaka +1

We report on the H2O maser distributions around IRAS 22480+6002 (=IRC+60370) observed with the Japanese VLBI Network (JVN) at three epochs spanning 2 months. This object was identi…

astro-ph2007★ 12 cited

A Measurement of Proper Motions of SiO Maser Sources in the Galactic Center with the VLBA

T. Oyama, M. Miyoshi, S. Deguchi +2

We report on the high-precision astrometric observations of maser sources around the Galactic Center in the SiO J=1--0 v=1 and 2 lines with the VLBA during 2001 -- 2004. With phase…

astro-ph2007★ 32 cited

Correlation between Infrared Colors and Intensity Ratios of SiO Maser Lines

Jun-ichi Nakashima, Shuji Deguchi

We present the results of SiO millimeter-line observations of a sample of known SiO maser sources covering a wide dust-temperature range. A cold part of the sample was selected fro…

astro-ph2007★ 23 cited

Identification of Very Red Counterparts of SiO Maser and OH/IR Objects in the GLIMPSE Survey

S. Deguchi, J. Nakashima, S. Kwok +1

Using the 3.6/4.5/5.8/8.0 micron images with 1.2 arcsec pixel resolution from the Spitzer/GLIMPSE survey, we investigated 23 masing and 18 very red objects that were not identified…