Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Shuji DEGUCHI"'
Autor:
Shuji Deguchi
Publikováno v:
Proceedings of the International Astronomical Union. 8:265-274
I review recent developments of SiO maser observations of miras, and discuss their kinematics in the Galaxy. They are deeply related to problems in other fields, such as the noncircular motion of Galactic spiral arms, streaming motions of stars in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9835d2e29171ff03a37490453c94fc16
https://doi.org/10.1017/s1743921312007119
https://doi.org/10.1017/s1743921312007119
Publikováno v:
The Astrophysical Journal. 721:267-277
We have conducted VLBA phase-referencing monitoring of H2O masers around the red supergiant, S Persei, for six years. We have fitted maser motions to a simple expanding-shell model with a common annual parallax and stellar proper motion, and obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d9584bd85452fa19e5f9a5fb36309ac
https://doi.org/10.1088/0004-637x/721/1/267
https://doi.org/10.1088/0004-637x/721/1/267
Autor:
Akiharu Nakagawa, Takumi Nagayama, Shuji Deguchi, Hiroshi Imai, Jun-ichi Nakashima, Aya Yamauchi
Publikováno v:
Publications of the Astronomical Society of Japan. 62:431-439
We report first on two-epoch mapping observations of SiO v = 3 J = 1–0 maser emission in the semiregular variable W Hydrae using the Japanese VLBI Network. The flux density of the v = 3 J = 1–0 emission detected on 2009 February 28 was two orders
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f159e2c77603d92be2a38eecea762e60
https://doi.org/10.1093/pasj/62.2.431
https://doi.org/10.1093/pasj/62.2.431
Publikováno v:
Publications of the Astronomical Society of Japan. 62:391-407
We present the result of radio observations of red supergiants in the star cluster, Stephenson's #2, and candidates for red supergiants in the star clusters, Mercer et al. (2005)'s #4, #8, and #13, in the SiO and H$_2$O maser lines.The Stephenson's #
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be319101f690cf2d2a20e5ad06572df1
https://doi.org/10.1093/pasj/62.2.391
https://doi.org/10.1093/pasj/62.2.391
Publikováno v:
Publications of the Astronomical Society of Japan. 61(6):1365-1372
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 Experiment (ASTE) 10 m telescope. We detected the CO emissio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e14f2ec7715d6bc6996c6a99df7e3a17
http://hdl.handle.net/10232/26220
http://hdl.handle.net/10232/26220
Autor:
Toshihisa Maeda, Hiroshi Imai, Naoko Matsumoto, Toshihiro Omodaka, Ryuichi Kamohara, Kosuke Ueda, Shuji Deguchi
Publikováno v:
Publications of the Astronomical Society of Japan. 60:1051-1056
We present two-epoch maps of SiO masers (v = 1a ndv = 2, J = 1–0) associated with the M-type star IRC � 10414, which were obtained with the Japanese VLBI Network (JVN). The spatial and Doppler velocity distributions, and the intensity ratio of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7a1fa608faf7ebb3f38271e58b4a93f
https://doi.org/10.1093/pasj/60.5.1051
https://doi.org/10.1093/pasj/60.5.1051
Autor:
Shuji Deguchi, Jun-ichi Nakashima
Publikováno v:
Proceedings of the International Astronomical Union. 3:266-270
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 correlation between infrared colors and SiO maser inten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec91b65d90600c39741cbbb429b16613
https://doi.org/10.1017/s1743921307013117
https://doi.org/10.1017/s1743921307013117
Autor:
Shuji Deguchi
Publikováno v:
Proceedings of the International Astronomical Union. 3:200-207
Using the SiO J=1−0 v=1 and v=2 lines near 43 GHz, we have detected about 2000 of 3600 sources observed with the Nobeyama 45-m radio telescope. The sources were chosen from IRAS/MSX/2MASS catalogs using color-selection criteria to pick up mass-losi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2ac37c99154e91a14cdb8306f01cfe7
https://doi.org/10.1017/s1743921307012975
https://doi.org/10.1017/s1743921307012975
Autor:
Svetlana V. Salii, Bosco H. K. Yung, Shuji Deguchi, Yong Zhang, Jun-ichi Nakashima, Andrej M. Sobolev
Publikováno v:
Publications of the Astronomical Society of Japan
We report the result of a systematic methanol observation toward IRAS 19312+1950. The properties of the SiO, H2O and OH masers of this object are consistent with those of mass-losing evolved stars, but some other properties are difficult to explain i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75d04fb826c0e6f184d7efbbb1657862
http://arxiv.org/abs/1506.06551
http://arxiv.org/abs/1506.06551
Publikováno v:
Journal of Physics: Conference Series. 54:166-170
A pilot project is carried out to measure circumstellar CO emission from three OH/IR, stars close to the GC using the Nobeyama Millimeter Array at 115 GHz and the Sub-Millimeter Array at 230 GHz. An interferometer is necessary as a 'spatial filter' i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8cb20548ba00923552e1008194a0abd
https://doi.org/10.1088/1742-6596/54/1/028
https://doi.org/10.1088/1742-6596/54/1/028