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CH3OH_I
ZUB07 - Methanol Masers Observations in the 3-mm Bandwidth at the Radio Telescope RT-22 CrAO
Short title
: Zubrin et al. (2007)
Authors
: Zubrin, S. Yu. Antyufeyev, A. V. Myshenko, V. V. Shulga, V. M.
Journal
: YSC 14 Proceedings of Contributed Papers (eds. G. Ivashchenko, A. Golovin), pp. 95-98
Bibcode
:
2007ysc..conf...95Z
PDF
:
ZUB07.pdf
Target type
: Other
Transitions
: OH_1665,SiO_1-0v0,CH3OH_9(I),CH3OH_23.4(I),CH3OH_25-30_GHz(I),CH3OH_36(I),CH3OH_44(I),CH3OH_95(I),CH3OH_132(I),CH3OH_6(II),CH3OH_23.1(II)
Abstract
We report the beginning of the astronomical masers investigations in the 3-mm bandwidth at the radio telescope RT-22 (CrAO, Ukraine). For this purpose the special complex for maser lines investigation in 85...115 GHz frequency band is developed. It is made on the base of the low noise cryogenic Shottky-diode receiver and the high resolution Fourier-spectrometer. The cryogenic receiver has the DSB noise temperature less than 100K. The spectral channel separation of the Fourier-spectrometer is about 4kHz and the spectrometer bandwidth is 8 MHz. Results of maser observations of 8^{0}-7^{1} A^{ +} transition of methanol (95.169GHz) towards DR-21(OH), DR-21W and NGC7538 are in good agreement with early obtained results by other authors. On the basis of the analysis of the location of masers in the NGC7538 direction we can assume that the origin of all known class I methanol masers in this region is connected with existing molecular outflows from young stars.
Input tables
: Table 1
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Detection table from Zubrin et al. (2007)
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individual components
ID
Obs. RA
Obs. Dec
l
b
Group id
Source name
Line
V
peak
FWHM
F
peak
Telescope
Beam
Detection
Date
(J2000)
(J2000)
(deg.)
(deg.)
CH
3
OH (class I)
(km/s)
(km/s)
(Jy)
(arcsec)
Yes
/
No
1
23 13 46.5
+61 27 32.7
111.5404
0.7663
G111.542+0.766
NGC7538
95 GHz (I)
-57.44
0.75
21
RT22_CrAO
40
+H
2
O
+CH
3
OH I
+CH
3
OH II
+OH
November 2004
2
20 38 59.2
+42 22 48.7
81.7183
0.5755
G81.722+0.572
DR21(OH)
95 GHz (I)
0.16
0.73
136
RT22_CrAO
40
+CH
3
OH I
+CH
3
OH II
+OH
-SiO
November 2004
3
20 38 54.6
+42 19 23.5
81.6644
0.5521
G81.665+0.551
DR21-W
95 GHz (I)
-2.69
1.18
52
RT22_CrAO
40
-H
2
O
+CH
3
OH I
+CH
3
OH II
November 2004
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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.grp) as grp,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,MAX(line_det) as line_det FROM met1_data LEFT JOIN all_objects_withmet ON met1_data.grp=all_objects_withmet.group_name LEFT JOIN transitions ON met1_data.line=transitions."Line" WHERE ref ilike 'ZUB07' 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.grp,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,line_det FROM met1_data LEFT JOIN all_objects_withmet ON met1_data.grp=all_objects_withmet.group_name LEFT JOIN transitions ON met1_data.line=transitions."Line" WHERE ref ilike 'ZUB07' AND detected=true AND hide=false ORDER BY detected DESC,id
