Spectral Line Database

1
???????????????

• ???? ??? ??????
• ????? ????????
• ?? ???

2
????

• ????????????????
• 1940???????CN??????160??
• (??????)
• ?????????????

CDMS??
3
ALMA???

• ?? ??????
• ???????????
• ????950 GHz??
• ?? ????
• ????????????????????????

???????
4
?????????????????????????????????1

• ????????????????????????????????????? ?????
• ??????????????????? ?????????
• ??????????????????????????? ??????????????????????
  ??????????????????? ??

5
?????????????????????????????????2

• ???????????????????????????????????
• 1 MHz??????????????????????
• ???6 THz?????????????

6

• ???????????

• 1975 Discovered in Sgr B2
• (Brown et al.)
• ??????????????????????????
• ???????????????????????????????????????????????
• ???????????????????????????????????????

http//www.nro.nao.ac.jp/nro45mrt/ results/latest
.html
7
?????????
50kHz
100 kHz
8
??????????(?????)
707 - 616

• 200 GHz????35,000 ?(?15 ????)

9
Nobeyama Radio Observatory

• 45m radio
• telescope
• 30 years old
• 20-116 GHz

10

• Orion KL????HCOOCH3 (vt 1)

all vt1 853-752E 863-762E
854-753E
836-735A 845-744A 844-743A
844-743E
? ? ? ? ? ?
?
Nobeyama 45 m
Ohishi et al. ApJ, 329, 511 (1988)
Kobayashi et al. ApJ, 657, L17 (2007)
11
HCOOCH3 in the vt 0,1,2 state

• ?????????????

Tvib gt Trot
Takano et al. PASJ In Press
12
????

• 20 - 200 GHz
• ?????(CH3OH)
• ?????(CH3CONH2)
• ?????(HCOOCH3 )
• trans-??????????
• (CH3CH2OCH3 )

??????2008?????
13
?????????????

• CDMS Cologne Database for Molecular Spectroscopy
• http//www.cdms.de/
• JPL Microwave, Millimeter and Submillimeter
  Spectral Line Catalog
• http//spec.jpl.nasa.gov
• ToyaMA Toyama Microwave Atlas for spectroscopists
  and astronomers
• http//www.sci.u-toyama.ac.jp/phys/4ken/atlas/

14
?? ?12,000?????????????
15

• 6???12????