CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959 (2009)
Imai, Hiroshi, He, Jin-Hua, Nakashima, Jun-ichi, Ukita, Nobuharu, Deguchi, Shuji, Koning, Nico
We observed CO J=3-2 emission from the "water fountain" sources, which exhibit high-velocity collimated stellar jets traced by water maser emission, with the Atacama Submillimeter Telescope...
A molecular line survey of the extreme carbon star CRL 3068 at millimeter wavelengths (2009)
Zhang, Yong, Kwok, Sun, Nakashima, Jun-ichi
We present the results of a molecular line survey of the extreme carbon star CRL 3068. The observations were carried out with the Arizona Radio Observatory (ARO) 12m telescope and the Heinrich Hertz...
Morpho-Kinematic Properties of the 21-Micron Source IRAS 07134+1005 (2008)
Nakashima, Jun-ichi, Koning, Nico, Kwok, Sun, Zhang, Yong
We report the results of a Submillimeter Array (SMA) interferometric observation of 21-micron source IRAS 07134+1005 in the CO J=3-2 line. In order to determine the morpho-kinematic properties of the...
Molecular Line Observations of the SiO Maser Source IRAS 19312+1950 (2008)
Nakashima, Jun-ichi, Deguchi, Shuji, Imai, Hiroshi, Kemball, Athol
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 which chemistry is...
Submillimeter Array Observation of the Proto-Planetary Nebula CRL 618 in the CO J=6-5 Line (2007)
Nakashima, Jun-ichi, Fong, David, Hasegawa, Tatsuhiko, Hirano, Naomi, Koning, Nico, Kwok, Sun, ...
We report on the results of a Submillimeter Array interferometric observation of the proto-planetary nebula CRL 618 in the 12CO J=6-5 line. With the new capability of SMA enabling us to use two...
Correlation between Infrared Colors and Intensity Ratios of SiO Maser Lines (2007)
Nakashima, Jun-ichi, Deguchi, Shuji
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 from the SiO maser...
SiO maser observations of a wide dust-temperature range sample (2007)
Nakashima, Jun-ichi, Deguchi, Shuji
We present the results of SiO line observations of a sample of known SiO maser sources covering a wide dust-temperature range. The aim of the present research is to investigate the causes of the...
Disklike Structure in the Semiregular Pulsating Star X Her (2006)
The author presents the results of Berkeley-Illinois-Maryland (BIMA) array interferometric observations in the CO J=1-0 line toward X Her and EP Aqr, the semiregular pulsating stars with a composite...
This paper reports the results of a Berkeley-Illinois-Maryland array interferometric observation of EP Aqr, a semiregular pulsating star with a double component line profile in the CO J=1-0 line. The...
Nakashima, Jun-ichi, Deguchi, Shuji
We report the results of mapping observations of the bipolar nebula with SiO maser emission, IRAS 19312+1950, in the CO (J=1-0 and J=2-1), 13CO (J=1-0 and J=2-1), C18O (J=1-0), CS (J=2-1), SO...
Disk-Like Structure in the Semi-Regular Pulsating Star, X Her (2004)
The author reports a result of an interferometric observation of the semiragular pulsating star with an unusual narrow molecular line profile, X Her, in the CO J=1-0 line with the...
Detection of Bipolar Flow toward an Unusual SiO Maser Source IRAS 19312+1950 (2004)
Nakashima, Jun-ichi, Deguchi, Shuji
We report a result of an interferometric observation toward an SiO maser source, IRAS 19312+1950, in the HCO+ J=1-0 line with the Berkeley-Illinois-Maryland-Association (BIMA) Millimeter Array. In...
MAPPING OBSERVATIONS OF AN UNUSUAL SIO MASER SOURCE, IRAS $19312+1950$ (2004)
Nakashima, Jun-Ichi, Deguchi,Shuji, Kuno, Nario
The Graduate University for Asvanced Studies, Nobeyama Radio Observatroy, Minamimaki, Minamisaku, Nagano 384-1305, Japan.
SiO Maser Survey toward the Inner Galactic Disk: 40 < l < 70 and |b| < 10 (2003)
Nakashima, Jun-ichi, Deguchi, Shuji
We present the results of an SiO maser survey for color-selected IRAS sources in the area 40 < l < 70 and |b| < 10 in the SiO J=1-0, v=1 and 2 transitions. We detected 134 out of 272 observed sources...
SiO Maser Survey of Cold IRAS Sources (2003)
Nakashima, Jun-ichi, Deguchi, Shuji
We present the results of observations of cold IRAS sources in the Galactic disk area, -10 < l < 100 and |b|
Observations of SiO Maser Sources within a Few Parsec from the Galactic Center (2002)
Deguchi, Shuji, Fujii, Takahiro, Miyoshi, Makoto, Nakashima, Jun-ichi
Mapping and monitoring observations of SiO maser sources near the Galactic center were made with the Nobeyama 45-m telescope at 43 GHz. Rectangular mapping an area of approximately 200'' x 100''$ in...
SiO maser survey of southern IRAS sources (2001)
Deguchi, Shuji, Nakashima, Jun-Ichi, Ramesh, B.
Restricted Access.
Detections of SiO and H$_2$O Masers in the Bipolar Nebula IRAS 19312+1950 (2000)
Nakashima, Jun-ichi, Deguchi, Shuji
We report on the detection of SiO and water masers toward a newly found bipolar nebula, IRAS 19312+1950. This object exhibits extreme red IRAS color log (F25/F12)=0.5 and log (F60/F25)=0.7 and a...
Period Measurement of AGB Stars in the Outer Galactic Disk (1999)
Nakashima, Jun-ichi, Jiang, B. W., Deguchi, Shuji, Sadakane, Kozo, Nakada, Yoshikazu
Light variation of the 47 AGB star candidates in the outer Galactic disk has been monitored at I-band for 5 years. Periods were determined well for 18 of them and less reliably for the other 25. The...