VERA Observations of SiO Masers in the Symbiotic Star R Aquarii

Kamohara Ryuichi; Bujarrabal Valentin; Bushimata Takeshi; Choi Yoon Kyung; Hirota Tomoya; Honma Mareki; Imai Hiroshi; Iwadate Kenzaburo; Jike Takaaki; Kameya Osamu; Kan-Ya Yukitoshi; Kawaguchi Noriyuki; Kim Mi Kyoung; Kijima Masachika; Kobayashi Hideyuki; Kuji Seisuke; Kurayama Tomoharu; Manabe Seiji; Miyaji Takeshi; Nagayama Takumi; Nakagawa Akiharu; Oh Chung Sik; Omodaka Toshihiro; Oyama Tomoaki; Sakai Satoshi; Sasao Tetsuo; Sato Katsuhisa; Sato Mayumi; Shibata Katsunori M.; Tamura Yoshiaki; Yamashita Kazuyoshi

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VERA Observations of SiO Masers in the Symbiotic Star R Aquarii

机译：共生星R Aquarii中SiO Masers的VERA观测

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Wepresentphase-referencedmapsoftheSiOmasertransitions$$v=$$1$$J=$$1-0and$$v=$$2$$J=$$1-0fromthesymbioticstellarsystemRAquarii,whichhostsanevolvedAGBstarplusahotcompanion.Observationswereperformedattwoepochs:2004.98and2005.98.Accurateabsolutecoordinatesandpropermotionsoftheemissioncentroidwereobtained;theerrorsexpectedfortheseparametersarealsogiven.WecomparetheVERAdatawiththepreviousastrometrybyHipparcos.Thisrepresentsapossibilitytoimprovetheorbitalparametersofthesysteminadifferentwaythanthatdonebefore.Thankstoouraccurateastrometry,wehavealsoestimatedthepercentageofspotcoincidencesbetweenbothmasertransitions,aparameterthathasbeenproposedtoberelevanttodiscriminatebetweendifferentmaserpumpingschemes.Althoughtheoveralldistributionsofbothlinesarealwayssimilar,thespotsarerarelycoincident,inapercentagerangingbetween3%and20%ofthecases.Thelackofsystematiccoincidencefavors,inprinciple,radiativepumping.However,wearguethatnofirmconclusioncanbereachedduetoalackofmodelsthatincludeanoverlapofrovibrationallines,andthataccuratelyaddressthecoincidenceofveryintensespotsofdifferentmasertransitions.

机译：Wepresentphase-referencedmapsoftheSiOmasertransitions $$ V = $$ 1 $$ J = $$ 1-0and $$ V = $$ 2 $$ J = $$ 1-0fromthesymbioticstellarsystemRAquarii，whichhostsanevolvedAGBstarplusahotcompanion.Observationswereperformedattwoepochs：2004.98and2005.98.Accurateabsolutecoordinatesandpropermotionsoftheemissioncentroidwereobtained; theerrorsexpectedfortheseparametersarealsogiven.WecomparetheVERAdatawiththepreviousastrometrybyHipparcos.Thisrepresentsapossibilitytoimprovetheorbitalparametersofthesysteminadifferentwaythanthatdonebefore.Thankstoouraccurateastrometry ，wehavealsoestimatedthepercentageofspotcoincidencesbetweenbothmasertransitions，aparameterthathasbeenproposedtoberelevanttodiscriminatebetweendifferentmaserpumpingschemes.Althoughtheoveralldistributionsofbothlinesarealwayssimilar，thespotsarerarelycoincident，inapercentagerangingbetween3％and20％ofthecases.Thelackofsystematiccoincidencefavors，inprinciple，radiativepumping.However，wearguethatnofirmconclusioncanbereachedduetoalackofmodelsthatincludeanoverlapofrovibrat正确地解决了许多不同过渡点的重合问题。

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《PASJ: Publications of the Astronomical Society of Japan》 |2008年第5期|共页
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Kamohara Ryuichi; Bujarrabal Valentin; Bushimata Takeshi; Choi Yoon Kyung; Hirota Tomoya; Honma Mareki; Imai Hiroshi; Iwadate Kenzaburo; Jike Takaaki; Kameya Osamu; Kan-Ya Yukitoshi; Kawaguchi Noriyuki; Kim Mi Kyoung; Kijima Masachika; Kobayashi Hideyuki; Kuji Seisuke; Kurayama Tomoharu; Manabe Seiji; Miyaji Takeshi; Nagayama Takumi; Nakagawa Akiharu; Oh Chung Sik; Omodaka Toshihiro; Oyama Tomoaki; Sakai Satoshi; Sasao Tetsuo; Sato Katsuhisa; Sato Mayumi; Shibata Katsunori M.; Tamura Yoshiaki; Yamashita Kazuyoshi;
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1. VERA Observations of SiO Masers in the Symbiotic Star R Aquarii [J] . Ryuichi KAMOHARA, Valentin BUJARRABAL, Takeshi BUSHIMATA, PASJ: Publications of the Astronomical Society of Japan . 2008,第5期

机译：共生星R Aquarii中SiO Masers的VERA观测
2. VERA observations of SiO maser emission from R Aquarii [J] . R. Kamohara, V. Bujarrabal, M. Honma, Astronomy and astrophysics . 2010,第18期

机译：R Aquarii的SiO maser排放的VERA观测
3. SIMULTANEOUS OBSERVATIONS OF SiO AND H2O MASERS TOWARD SYMBIOTIC STARS [J] . Se-Hyung Cho, Jaeheon Kim The Astrophysical journal . 2010,第1期

机译：SiO和H2O物质对共星的同时观测
4. VLBI phase-referencing observations of SiO masers towards R Aquarii [C] . Ryuichi Kamohara, VERA team International Astronomical Union . 2008

机译：VLBI相位参考SIO玩具对R Aquarii的观察
5. The structure and polarization properties of the SiO masers in the extended atmosphere of R Aquarii [D] . Boboltz, David Allen, Jr. 1997

机译：R Aquarii大气中SiO的结构和极化性质
6. Interferometric observations of SiO thermal emission in the inner wind of M-type AGBstars IK Tauri and IRC+10011 [O] . J. L. Verbena, V. Bujarrabal, J. Alcolea, -1

机译：M型AGB内风中SiO热散发的干涉测量观察IK Tauri和IRC + 10011星星
7. VERA observations of SiO maser emission from R Aquarii [O] . R. Kamohara, V. Bujarrabal, M. Honma, 2010

机译：VERA观察R aquarii的SiO Maser排放
8. Infrared and SiO Maser Observations of OH/IR Stars [R] . Nyman, L. A., Hall, P. J., Le Bertre, T. 1993

机译：OH / IR星的红外和siO maser观测

VERA Observations of SiO Masers in the Symbiotic Star R Aquarii

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