9lbm1^ 7`a%b - kagoshima...

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9LBM1^_7‘a%b cd$%&efYghi3 2008j1k18l 3!"#$%& 1. ’()*+,-%.%!/0"* 12345-46, astrometry7 2. 89:;,<=>?@AB#"CD 91E>##+97FGHI"$J K9(AGB/post-AGB stars7":;"$J 3. 9LBMN,BMOPQR<= -%.%ST 9FGUVW9XUV":; 9LY3"Z[\]

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Page 1: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

9LBM1^_7`a%b

cd$%&efYghi3

2008j1k18l

3!"#$%&1. '()*+,-%.%!/0"*

12345-46, astrometry7

2. 89:;,<=>?@AB#"CD

• 91E>##+97FGHI"$J

• K9(AGB/post-AGB stars7":;"$J

3. 9LBMN,BMOPQR<=

• -%.%ST

• 9FGUVW9XUV":;

• 9LY3"Z[\]

Page 2: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

-%.%!/0"*1astrometry7

• -%.%§¨©%ª�«¬��~2345-46– -%.%3­�41Y3®7: ¯g°~1AU

100&g�5±& @ 10 kpc

– �²³´µ¶·¸¹(VLBI)º»'

VERA1�¼½V�*¾¿À) 20mÀ4³q 2Á%ÂÃ\qÄ�V

VLBA (Very Long Baseline Array @ÅÆ) 25mÀ10³

ZÇÈ'��

VSOP-2 (VLBI Space Observatory Programme-2)

2012jÉÊËÌÍ�q �V

-%.%!/0"*1astrometry7

• '()*+"mTGnVERA2345-46"$%&

– 9FGUVop##+9FGUVqrstpD=2%6 kpc

– uvwxy91z{#+97|OH/IR91##+97'()uvwxy9X}%y~��3�%6i`�"

��~;

– E���"����!"�� �Number one �� only one�

– '()z�9� D=R0~7.5 kpc

�#�v���%a�"Y3��W�##+FG

VSOP-22345-46"$%&

– '()��� RGal>15 kpc, D>8 kpc 1 �V¡¢7

– #{&£vi¤ (RGal ~50 kpc)

– '()¥a¦ (D~6-10 kpc)

Page 3: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

jX(ÎÏÐ)Ñ(2008j1kSÒ7

D=8.0+0.9-0.7 kpc

(Imai, Sahai & Morris, 2007

ApJ, 669, 424)

89:;,<=>?@AB#"CD

• 9FGHI"$Jo 9LÓLÔ 89–##+9(M>10Msun)"FGHI

z{#+9ÕÖ"×�ØppÙÚÛY3ÜÝØ

–rstÞß"9FG1à~¶Ø7

–'()���ß"9FG1ØØØ7

• K9:;"$Jop89Ô 9LÓL–K9���>?@AB#áâo §¨ãäå

–æçxy�èé¶êë

– AGB9Ô post-AGB9�":;>ìí9X�":;

–K9¦î�4ïð9s9¤"FG

Page 4: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

89:;,<=>?@AB#"CD

• 9XY3Éç"$JÔ -%.%**"ñ/ò– �ó&n$ôo õö÷øST"ù+

– úûÉço üýþâ~ÿ�4a!""#

– úûÉçx;$W(´â~%6&4oáâST1'Nø(Ê7",)"*

9LBMN,BMOPQR<=

9LÓL=*+ßOSß,Ûó-.s/WM0s/

-%.%ST

9FGUVW9XUV":;

9LY3"Z[\]

Page 5: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

-%.%ST• 1!"2'\G$%&

• 3�1pumping) op45a6%��!

• 78(amplification)opBMs/1à~ï9~7

• :�-;(beaming)op<=ïâ~!\]

• -%.%ST©ìí1ù>ß,A7��"?�@Ø

• -%.%��"AÒB$

• -%.%��CS"Dgui`

• *+BMOP�ÕE�íÛsF.�º»'

• -%.%3­�4�G#H>�AnI

• JK-%.%!"L"ønIWnM

• -%.%N%D"O)P$I

• KQRuST%RUi>�A-%.%ST"M$

9FGUVW9XUV":;

• 89º>VWAXY@1Y3"à~ï9~ïZ!ï[G7Ø• 9LY3"\W©]^_AÔ VLBI2345-46

• 9LZ!""*Ô `¶"*(polarimetry) with·¸"

• '() v.s. #{&£vi¤

• 89º>VW¬a@bíÛA"Ø

• 89ÕÖ"×��cd

• 9XY3Wne¤"f-\WµgUVh#>�AcdÔ高い画質が必要なのでVLBI/ ALMA等が必要

• K9åij,CkW¬Y3"lmn(B#CD"DgÂ3�%a7@Ø

• ½(o(>10”)�p~µ¶&�b(OH-%.%, HIö)º»'

ÔSquare Kilometer Array (SKA)へ

Page 6: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

9LY3"Z[\]

• �9"¬Vq�(10,000AU)@�9"¬r�(~1AU, ~10K)åiß,AØ

–à~stÛne¤åi"nuï#+vw–neY3"Z[\]"vw>�A

ne¤ïx2"FG

• xiy�4ÛVLBIµ¶!©z{�«¬|}´(HI, H2CO)"/[**

VLBI~C�@HI1zò��Y3"®7«åÛó

ne¤"¬rop1,000AUI~"�"ºB��;

Page 7: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

��"$%&(H20j~4j>��cd7

• VERA ��~��/0"* (SÒ:lzq1%��7

– uvwxy9"X}%y~��3�%6i`�"��~;

– z�g�0b5¦î�4 (D=2%6kpc)

• VSOP-2 ����cd1�1q��7

– #{&£vi¤z"�-%.%!"N%DnI

–  ��-%.%!2345-46cd"��

• AKARI1zL�¿��´�¼�97N%D"��1~�zq��7

– 2!�D5`"L"ønI

– �-%.%!��"¬�"cd"��

VERA ��~��/0"*

• jX(Î���jÉç""*– uvwxy9"X}%y~��3�%6i`�"��~;

 ¡)åi 2kpc¢Þ"

²X}xy9ºmT1!D/D<10%)

£>**:lz"��"jX(Î"* (���W¤7

a¥"¬�>���"**©¦�_A(2��/¤7

§¨-%.%!©ªD%"sF"#

VLBI2345-46>�A«�"¬­(Matsui et al. 2008, PASJ submitted)

Page 8: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

VERA ��~��/0"*

• jX(Î���jÉç""*– z�g�0b5¦î�4 (D=2%6kpc)

ÂaÃÄ3ïó¾¸tï���"

9FGUV"�g�Éç

""*

£>**:lz"��"jX(Î"* (���W¤7

a¥"¬�>���"**©¦�_A(2��/¤7

§¨-%.%!©ªD%"sF"#

VSOP-2 ����cd

• VSOP-2: 2012jåi"**ËÌ

–®¯ LBA�°'«¬±²øÛ³'()>�´*+

–#{&£vi¤o '()«��qµ¶·+

–��>?BÛ¸¹ïÙ~q%øºG"+»«©¼½¾?m»'º¿A

–l±cdÀº2Á"Key Science Program�

Page 9: 9LBM1^ 7`a%b - Kagoshima Umilkyway.sci.kagoshima-u.ac.jp/~imai/Research_ImaiG_2008.pdfjX(ÎÏÐ)Ñ(2008j1kSÒ7 D=8.0+0.9-0.7 kpc (Imai, Sahai & Morris, 2007 89:;, ?@ABApJ#,

VSOP-2 ����cd• #{&£vi¤z"�-%.%!"N%DnI

ACTA (Australian Compact Telescope Array)

– -%.%!"?BÛ/0�Þ�19FGUV7Éç""#– VSOP-2 2345-46**�!ÛºA���

•  ��-%.%!2345-46cd"��

– LMC/SMC

– '()z�"ÙÚíÛ

– '()�-%.%!

• VSOP-2 Science Working Group �"ÇáWÜÝ

AKARI1zL�¿��´�¼�97N%D"��

• IRAS2!�D5`>ÅÆAÇÈ�D5`"»'ò

– IRAS2!op¸¹�~ºÉóqn$ôµó

– KUxy9�D5`@äʼ½Ëm«¬1Ìó7

– VERA©Êó¬-%.%��@��ÍÎ

– NRO45m, GBT100m©Ïо��«¬÷ºÑÐ�Ò$ø

• AKARI2!�D5`

– �í_Ó66%3Ø

– �-%.%!º~CkW¬IRAS2!"ò#""#

– mÔ_AAKARI2!©Õ��2�b

– Öóר"-%.%!��>!ÛØA

– K-band*y**"¬�"��D5`"(G