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Data:
H
2
O
,
SiO
,
CH3OH_I
DEG12B - Maser Emission toward the Infrared Dark Cloud G359.94+0.17 Seen in Silhouette against the Galactic Center
Short title
: Deguchi et al. (2012b)
Authors
: Deguchi, Shuji Tafoya, Daniel Nagisa, Shino
Journal
: Publications of the Astronomical Society of Japan, Vol.64, No.2, article id.28,
6
pp.
Bibcode
:
2012PASJ...64...28D
BiBTeX
PDF
:
DEG12B.pdf
Target type
: IRDC
Transitions
: SiO_1-0v0,CH3OH_36(I),CH3OH_44(I),CH3OH_95(I),CH3OH_132(I)
Abstract
The infrared dark cloud G359.94+0.17 is a conspicuous, opaque cloud, which is seen in silhouette against the Galactic center. We found unexpectedly strong (&tilde 50 Jy) maser emission of CH
3
OH at 44 GHz with additional weak 22 GHz H
2
O maser and 43 GHz SiO thermal emissions toward this cloud. Detections of these molecular lines indicate that strong star-forming activities are proceeding in this cloud, which was not reported previously despite of numerous studies toward the Galactic center. The line profiles of the NH
3
inversion lines at 23 GHz indicate that G359.94+0.17 is composed of mainly two clouds with V
1sr
= 0, and 15 km s
-1
overlapped on the line of sight. The maser emission is associated with the 15 km s
-1
cloud, suggesting that it is located at the Norma spiral arm. eprintid:
arXiv:1109.0677
Comments:
Infrared Dark Cloud G359.94+0.17
Input tables
: Table 1
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Detection table from Deguchi et al. (2012b)
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individual components
ID
Obs. RA
Obs. Dec
l
b
Source name
Line
V
peak
T
a
∫T
a
dv
Telescope
RMS
Beam
Date
(J2000)
(J2000)
(deg.)
(deg.)
CH
3
OH (class I)
(km/s)
(K)
(K*km/s)
(Jy)
(arcsec)
1
17 44 53.7
-28 54 4.1
359.9470
0.1538
G359.94+0.17
44 GHz (I)
16.5
18.029
19.245
NRO
0.087
40
2011 February 26
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2MASS source distance (arcsec)
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select MAX(met1_data.ra_hms) as ra_hms,MAX(met1_data.dec_dms) as dec_dms,MAX(met1_data.source_name) as source_name,MAX(met1_data.ra) as ra,MAX(met1_data.dec) as dec,MAX(met1_data.l) as l,MAX(met1_data.b) as b,MAX(met1_data.other_name) as other_name,MAX(met1_data.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(met1_data.line) as line,MAX(met1_data.vrange) as vrange,MAX(met1_data.vpeak) as vpeak,MAX(met1_data.peak) as peak,MAX(met1_data.fwhm) as fwhm,MAX(met1_data.int) as int,MAX(met1_data.rms) as rms,MAX(met1_data.units) as units,MAX(met1_data.units_rms) as units_rms,MAX(met1_data.date_txt) as date_txt,MAX(met1_data.telescope_ref) as telescope_ref,MAX(met1_data.beam) as beam,MAX(met1_data.beam_maj) as beam_maj,MAX(met1_data.beam_min) as beam_min,MAX(met1_data.beam_pa) as beam_pa,MAX(met1_data.ref) as ref,MAX(met1_data.list_ref) as list_ref,MAX(met1_data.ascii) as ascii,MAX(met1_data.image) as image,MAX(met1_data.descr) as descr,MAX(met1_data.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(met1_data.dist) as dist,MAX(met1_data.date_txt) as date_txt,BOOL_OR(classii) as classii FROM met1_data LEFT JOIN transitions ON met1_data.line=transitions."Line" WHERE ref ilike 'DEG12B' AND detected=true AND hide=false GROUP BY ref
select met1_data.ra_hms,met1_data.dec_dms,met1_data.source_name,met1_data.ra,met1_data.dec,met1_data.l,met1_data.b,met1_data.other_name,met1_data.other_desc,met1_data.thermal,met1_data.line,met1_data.vrange,met1_data.vpeak,met1_data.peak,met1_data.fwhm,met1_data.int,met1_data.rms,met1_data.units,met1_data.units_rms,met1_data.date_txt,met1_data.telescope_ref,met1_data.beam,met1_data.beam_maj,met1_data.beam_min,met1_data.beam_pa,met1_data.ref,met1_data.list_ref,met1_data.ascii,met1_data.image,met1_data.descr,met1_data.id,met1_data.mjy_flag,met1_data.rms_mjy_flag,met1_data.dist,met1_data.date_txt,met1_data.classii FROM met1_data LEFT JOIN transitions ON met1_data.line=transitions."Line" WHERE ref ilike 'DEG12B' AND detected=true AND hide=false ORDER BY detected DESC,id
