J/A+A/413/233 12.2 GHz methanol survey (Blaszkiewicz+, 2004)
12.2 GHz survey towards 6.7 GHz methanol masers.
A comparison of 12.2 GHz and 6.7 GHz spectra.
Blaszkiewicz, L., Kus, A. J.
<Astron. Astrophys. 413, 233 (2004)>
=2004A&A...413..233B 2004A&A...413..233B
ADC_Keywords: Masers ; H II regions ; Radio lines ; Spectroscopy
Keywords: masers - surveys - stars: formation - ISM: molecules -
radio lines: ISM - HII regions
Abstract:
We present results of 12.2GHz methanol maser survey done with the
Torun 32 meter radio telescope. We examined 261 star forming sites,
known as containing 6.7GHz maser emission sources. The survey resulted
in 49 sources with maser line detection, with 21 previously unknown
emissions. All detected 12.2GHz masers have been observed at 6.7GHz
transition. Only one 12.2GHz source has no 6.7GHz counterpart. We
compared basic spectral line properties at both transitions. In a few
cases we observed absorption features and emitting counterparts in the
other monitored frequency, at the same velocity.
Description:
File table2.dat contains 49 sources of 12.2GHz maser emission and one
absorption source. Four of emitting sources have double records
because of the presence of two groups of emissions detected towards
them. The follow columns list: the name of the source (IRAS name or
name based on galactic longitude and latitude), the coordinates, the
integrated flux density, the peak flux density, the peak LSR velocity,
the start and the end LSR velocity of the emission (or absorption),
RMS level and references for first observation. The last column are
the other name. File table3.dat contains 48 sources of 6.7GHz maser
emission, two of them are doubled alike in table2.dat. Two absorption
lines are also included into table3.dat. The scheme of columns of
table3.dat is identical to those for table2.dat.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 98 54 Results for 12.2 GHz observations
table3.dat 98 52 Results for 6.7 GHz observations
refs.dat 45 19 References
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See also:
J/A+AS/134/115 : Medicina 6.7GHz methanol masers survey (Slysh+ 1999)
J/A+AS/143/269 : 6.7GHz methanol maser emission survey (Szymczak+, 2000)
J/A+A/403/1095 : 6.7GHz methanol masers survey of low-mass YSO (Minier+, 2003)
Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Name Name of the source
15- 16 I2 h RAh Right Ascension J2000 (hours)
18- 19 I2 min RAm Right Ascension J2000 (minutes)
21- 24 F4.1 s RAs Right Ascension J2000 (seconds)
28 A1 --- DE- Declination J2000 (sign)
29- 30 I2 deg DEd Declination J2000 (degrees)
32- 33 I2 arcmin DEm Declination J2000 (minutes)
35- 36 I2 arcsec DEs Declination J2000 (seconds)
39- 44 F6.1 Jy.km/s Sint Integrated Flux Density
47- 52 F6.1 Jy Speak Peak Flux Density (1)
57- 61 F5.1 km/s Vpeak LSR velocity of peak emission (1)
67- 71 F5.1 km/s Vstart Start LSR velocity of emission (1)
74- 78 F5.1 km/s Vend End LSR velocity of emission (1)
82- 85 F4.2 Jy e_Speak RMS level
87- 88 I2 --- r_Name Discovery reference, detailed in
file "refs.dat"
91- 98 A8 --- Region Star formation region name
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Note (1): At 12.2 GHz for table2.dat, 6.7 GHz for table3.dat
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 ---- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 43 A20 --- Aut Author's name
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Acknowledgements: Leszek Blaszkiewicz
(End) Leszek Blaszkiewicz [TCfA Torun, Poland] 16-Apr-2003