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J/AZh/84/839 Methanol emission of isolated maser condensations (Larionov+, 2007)

The methanol emission of isolated maser condensations: statistical velocity distribution. Larionov G.M., Val'tts I.E. <Astron. Zh. 84, 839 (2007)> =2007AZh....84..839L =2007ARep...51..756L
ADC_Keywords: Molecular clouds ; Masers ; Radial velocities Abstract: The distribution of the radial velocities of class I methanol masers relative to the velocities of their parent molecular clouds is analyzed. This analysis is based on catalog data for methanol masers detected up to the present time in both the northern and southern hemispheres, together with catalog data for the CS(2-1) line, which traces dense, quiescent gas. Results for a large sample of sources show that, in contrast to class II methanol masers, which undergo Keplerian motions in protoplanetary disks, class I methanol masers retain their velocities in the local system of rest of the surrounding medium, and do not participate in the ejection of matter in bipolar out flows. They can be adequately described using a model in which matter ejected from active parts of the associated star-forming regions flows around isolated maser condensations. This compresses the maser clumps, enhancing the concentration of methanol and facilitating collisional pumping of the masers. Description: We present a master list of masers toward which CS(2-1) line emission formed in the dense medium surrounding the maser condensation is observed. This table includes parameters for features in 72 class I masers, whose data are taken from the catalogs [9-13], together with the parameters of associated CS(2-1) lines, whose data are taken from [14-19]. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table.dat 74 148 Parameters of methanol maser lines at 44GHz and CS(2-1) thermal lines observed toward class I methanol masers
See also: J/AZh/71/37 : Thermal Methanol from 33 Clouds at 48 GHz (Slysh+, 1994) J/A+AS/124/85 : OH emission from IRAS sources (Slysh+ 1997) J/AZh/72/22 : A 95 GHz Survey of Methanol Masers (Valtts+, 1995) J/A+AS/134/115 : Medicina 6.7GHz methanol masers survey (Slysh+ 1999) J/AZh/79/328 : Methanol maser condensations in W 48 (Val'tts+, 2002) J/AZh/84/579 : Catalog of Class I methanol masers (Val'tts+, 2007) Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Name Source name 15- 16 I2 h RAh Right ascension (B1950) 18- 19 I2 min RAm Right ascension (B1950) 21- 25 F5.2 s RAs Right ascension (B1950) 27 A1 --- DE- Declination sign (B1950) 28- 29 I2 deg DEd Declination (B1950) 31- 32 I2 arcmin DEm Declination (B1950) 34- 38 F5.2 arcsec DEs Declination (B1950) 39 A1 --- R [*] Note on NGC 6334 F position (1) 40- 45 F6.2 km/s Vlsr1 ? CH3OH(70-61A+) LSR velocity 47- 52 F6.2 Jy Flux ? CH3OH(70-61A+) flux 55- 56 I2 --- r_Flux ? Reference for CH3OH data (3) 59- 64 F6.2 km/s Vlsr2 ? CS(2-1) LSR velocity 66- 70 F5.2 K TA ? CS(2-1) antenne temperature 71 A1 --- n_TA [d] Note (2) 73- 74 I2 --- r_TA ? Reference for CS(2-1) data (3)
Note (1): For NGC 6334 F, there were no position in the original table. The position presented is from Simbad and added by CDS. Note (2): Note from Larionov et al. (1999A&AS..139..257L) data not explained in their paper. Note (3): References as follows: 9 = 1994MNRAS.268..464S Slysh et al. 10 = 1990A&A...240..116B Bachiller et al. 11 = 1990ApJ...354..556H Haschick et al. 12 = 1992AZh....69.1002K Kalenskij et al. 13 = 2004ApJS..155..149K Kurtz et al. Cat. J/ApJS/155/149 14 = 1999A&AS..139..257L Larionov et al. 15 = 1996A&AS..115...81B Bronfman et al. Cat. J/A+AS/115/81 16 = 1996A&AS..118..191J Juvela Cat. J/A+AS/118/191 17 = 1992ApJS...78..505P Plume et al. 18 = 1996ApJ...463..205A Anglada et al. Cat. J/ApJ/463/205 19 = 1989ApJ...342L..87S Sugitani et al.
History: From electronic version of the journal
(End) Veta Avedisova [INASAN], Patricia Vannier [CDS] 07-Apr-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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