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相关论文: Observations of SiO Maser Sources within a Few Par…

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A moderately deep survey of stellar maser sources toward the Galactic center has been made in the SiO J=1-0 v=1 and v=2 transitions (~ 43 GHz) with the Nobeyama 45-m telescope of a beam size of about 40". At the Galactic center (Sgr A*), 7…

天体物理学 · 物理学 2009-10-30 Hideyuki Izumiura , Shuji Deguchi , Takahiro Fujii

We have surveyed 401 color selected IRAS sources in the Galactic disk in the SiO J=1--0 v= 1 and 2 maser lines at 43 GHz, resulting in 254 (239 new) detections. The observed sources lie mostly in a strip of the inner Galactic disk with…

天体物理学 · 物理学 2015-06-24 S. Deguchi , T. Fujii , I. S. Glass , H. Imai , Y. Ita , H. Izumiura , O. Kameya , A. Miyazaki , Y. Nakada , J. Nakashima

We have surveyed ~400 known large-amplitude variables within 15' of the galactic center in the SiO J=1--0 v=1 and 2 maser lines at 43 GHz, resulting in 179 detections. SiO lines were also detected from 16 other resulting in 180 detections.…

天体物理学 · 物理学 2015-06-24 S. Deguchi , H. Imai , T. Fujii , I. S. Glass , Y. Ita , H. Izumiura , O. Kameya , A. Miyazaki , Y. Nakada , J. Nakashima

We present results of 3 mm observations of SiO maser sources in the Galactic Centre (GC) from observations with the Australia Telescope Compact Array between $2010-2014$, along the transitions of the SiO molecule at $v = 1, J = 2-1$ at…

We present results on a search for 86.243 GHz SiO (J = 2 -- 1, v = 1) maser emission toward 67 OH/IR stars located near the Galactic Centre. We detected 32 spectral peaks, of which 28 correspond to SiO maser lines arising from the envelopes…

星系天体物理 · 物理学 2020-07-08 M. Messineo , L. O. Sjouwerman , H. J. Habing , A. Omont

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 in SiO masers; 127 were new detections.…

天体物理学 · 物理学 2015-06-24 Jun-ichi Nakashima , Shuji Deguchi

We present the Australia Telescope Compact Array (ATCA) observations of the SiO masers in the Galactic center in transitions of v=1, J=2--1 at 86 GHz and v=1, J=1--0 at 43 GHz. Two 86-GHz SiO masers were detected within the central parsec,…

星系天体物理 · 物理学 2010-07-28 Juan Li , Tao An , Zhi-Qiang Shen , Atsushi Miyazaki

We present the results of observations of cold IRAS sources in the Galactic disk area, -10 < l < 100 and |b|<5, in the SiO J=1-0, v=1 and 2 maser lines. SiO masers were detected in 51 out of 143 observed sources; 45 were new detections in…

天体物理学 · 物理学 2015-06-24 Jun-ichi Nakashima , Shuji Deguchi

We have surveyed known large-amplitude variables within 15' of the Galactic center in the SiO J=1-0 v=1 and 2 maser lines at 43 GHz, resulting in 79 detections and 58 non-detections. The detection rate of 58 percent is comparable to that…

天体物理学 · 物理学 2015-06-24 H. Imai , S. Deguchi , T. Fujii , I. S. Glass , Y. Ita , H. Izumiura , O. Kameya , A. Miyazaki , Y. Nakada , J. Nakashima

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-referencing interferometry referred to the radio continuum…

天体物理学 · 物理学 2015-05-13 T. Oyama , M. Miyoshi , S. Deguchi , H. Imai , Z-Q. Shen

We investigated stellar maser sources with no IRAS counterpart at the radio, middle-infrared, and near-infrared wavelengths. A 43 GHz SiO maser search for 120 2MASS/MSX objects, and 10 OH 1612 MHz sources with no or a very faint MSX…

天体物理学 · 物理学 2015-06-24 S. Deguchi , J. Nakashima , T. Miyata , Y. Ita

We have searched for the SiO J=1--0 v= 1 and 2 maser lines at ~ 43 GHz in 277 2MASS/MSX/IRAS sources off the Galactic plane (|b|> 3 deg), which resulted in 119 (112 new) detections. Among the new detections, are two very faint objects with…

We present 86 GHz (v = 1, J = 2 -1) SiO maser line observations with the IRAM 30-m telescope of a sample of 441 late-type stars in the Inner Galaxy (-4 degr < l < +30 degr). These stars were selected on basis of their infrared magnitudes…

天体物理学 · 物理学 2009-11-07 M. Messineo , H. J. Habing , L. O. Sjouwerman , A. Omont , K. M. Menten

We present sensitive Australia Telescope Compact Array (ATCA) observations of SiO masers in the inner parsecs of the Galactic center (GC). We detected five SiO J=2-1, v=1 (86 GHz) masers in the innner 25 arcsec (1 pc) of the GC. All the…

星系天体物理 · 物理学 2010-02-08 Juan Li , Tao An , Zhi-Qiang Shen , Atsushi Miyazaki

We report on the detection of SiO J=2--1 v=1 (86 GHz) maser emission from the red supergiant IRAS04553--6825 in the LMC. It has thereby become the first known source of SiO maser emission outside the Milky Way. We used the Swedish-ESO Submm…

天体物理学 · 物理学 2009-10-26 Jacco Th. van Loon , Albert A. Zijlstra , Valentin Bujarrabal , Lars-Ake Nyman

We present the results of a short time scale monitoring of SiO maser emission (v=1 J=1-0 transition) in four known strong sources. These sources were monitored nightly for a period of about a month. The aim of these observations is to…

天体物理学 · 物理学 2007-05-23 F. P. Pijpers , J. R. Pardo , V. Bujarrabal

We conducted an SiO maser survey towards 221 O-rich AGB stars with the aim of identifying maser emission associated with the Sagittarius stellar stream. In this survey, maser emission was detected in 44 targets, of which 35 were new…

星系天体物理 · 物理学 2017-11-29 Yuanwei Wu , Noriyuki Matsunaga , Ross A. Burns , Bo Zhang

We surveyed 291 MSX/2MASS infrared objects in the 7 x 2 deg area of the galactic center in the 43 GHz SiO J=1--0 v=1 and 2 maser lines, obtaining accurate radial velocities of 163 detected objects. The surveyed area is the region where the…

We report Very Long Baseline Array (VLBA) observations of 43 GHz v=1, J=1-0 SiO masers in the circumstellar envelope of the M-type semi-regular variable star VX Sgr at 3 epochs during 1999 April-May. These high-resolution VLBA images reveal…

天体物理学 · 物理学 2008-11-26 Xi Chen , Zhi-Qiang Shen , Hiroshi Imai , Ryuichi Kamohara

We have searched for 22 GHz H2O and 43/86/129 GHz SiO masers in bright IRAS point sources in the SMC and LMC, to test whether the kinematics of the mass loss from these stars depends on metallicity. H2O masers were detected in the red…

天体物理学 · 物理学 2009-11-06 Jacco Th. van Loon , Albert A. Zijlstra , Valentin Bujarrabal , Lars-Ake Nyman
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