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J/ApJ/463/205     CS and NH3 Survey of H2O Maser Emission    (Anglada+ 1996)

A CS and NH3 Survey of H2O Maser Emission Anglada G., Estalella R., Pastor J., Rodriguez L.F., Haschick A.D. <Astrophys. J. 463, 205 (1996)> =1996ApJ...463..205A
ADC_Keywords: Masers ; Radio lines Keywords: ISM: clouds; ISM: molecules; masers; radio lines: molecular; lines, interstellar; stars: formation of Abstract: CS J=1-0 and NH(J,K)=(1,1) observations toward a large sample of H2O maser regions are reported. A total of 172 sources were observed. 107 were observed in CS and 164 in NH3. The main purpose of this work was to study the relationship between the parameters that characterize the high velocity H2O maser emission, which originates in very small (about 10 AU) and very dense (107-109/cm3) regions, and those that characterize the molecular emission coming from quiescent, more extended (0.1-1.0 pc) high density (104-105/cm3) regions, traced by the CS and NH3 emissions. The observations were carried out between 1986 and 1990 with the 37 m radio telescope at Haystack Observatory The emission of the (J,K)=(1,1) inversion transition of the NH3 molecule at 23.694496 GHz, and the emission of the J=1->0 rotational transition of the CS molecule at 48.990968 GHz were observed. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file aaspp4.sty 109 490 Style file for csh2o.txt csh2o.txt 74 863 *The original paper in ASCII csh2o.tex 93 982 *The original paper in LaTeX table1.dat 83 204 *Regions with known H2O maser emission table2.dat 90 106 Parameters of CS and NH3 maser emission table5.dat 90 106 H2O masers detected in CS or NH3 refs.dat 80 241 References
Note on csh2o.tex and csh2o.txt: These are complete except for the following portions: Tables 1, 2, and 5 and the references (these are in separate files); the figure captions (the figures are unavailable and are described in the text); the notes and references for tables 1 and 5 (as table refs.dat) Note on table1.dat: Known interstellar H2O masers with δ > -38° in August 1986. Reference numbers were changed to agree with those of Table 5.
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 15 A15 --- ID Region name 17- 18 I2 h RAh Right Ascension B1950 (hours) 19- 20 I2 min RAm Right Ascension B1950 (minutes) 21- 24 F4.1 s RAs Right Ascension B1950 (seconds) 25 A1 --- DE- Declination B1950 (sign) 26- 27 I2 deg DEd Declination B1950 (degrees) 28- 29 I2 arcmin DEm Declination B1950 (minutes) 30- 33 F4.1 arcsec DEs Declination B1950 (seconds) 35- 36 I2 --- r_Vel Reference to data 38- 42 F5.1 km/s Vel ?Central velocity of the observed bandwidth 44- 49 F6.3 K sigCS ?1σ sensitivity for CS 51- 54 A4 --- det_CS [Yes No ?] Has CS been detected? 56- 60 F5.3 K sigNH3 ?1σ sensitivity for NH3 (23.69GHz) 62- 65 A4 --- det_NH3 [Yes No ?] Has NH3 been detected? 67 A1 --- note *[abc] Note 69- 83 A15 --- altID Other name for region
Note on note: a = Detection has been obtained by adding several positions from a five-points map. b = Includes G32.80+0.19 (1) and G32.80+0.19 (2). c = Includes G32.75+0.08.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 16 A16 --- ID Region designation 18- 21 F4.2 K Ta_CS ?Antenna temperature for CS 23- 26 F4.2 K eTaCS ?Mean error of Ta for CS 28- 34 F7.2 km/s VelCS ?Central velocity of CS line 36- 39 F4.2 km/s e_VelCS ?Mean error of VelCS 41- 46 F6.2 km/s dVelCS ?Line width (FWHM) for CS 48- 51 F4.2 km/s e_dVelCS ?Mean error of dVelCS 56- 59 F4.2 K Ta_NH3 ?Antenna temperature for NH3 (23.69GHz) 61- 64 F4.2 K eTaNH3 ?Mean error of Ta for NH3 67- 73 F7.2 km/s VelNH3 ?Central velocity of NH3 line (23.69GHz) 75- 78 F4.2 km/s e_VelNH3 ?Mean error of VelNH3 80- 85 F6.2 km/s dVelNH3 ?Line width (FWHM) for NH3 87- 90 F4.2 km/s e_dVelNH3 ?Mean error of dVelNH3
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 15 A15 --- ID Region 17- 21 F5.1 km/s Velmin Minimum of velocity range for H2O 24- 28 F5.1 km/s Velmax Maximum of velocity range for H2O 31- 35 F5.1 km/s Velm Velocity of the maximum emission 38- 42 F5.1 km/s Vela *Average of the mean velocities 45- 49 F5.1 km/s Velc Velocity centroid of the maser emission 52- 67 A16 --- r_Vel Reference(s) for H2O data 69- 73 F5.1 km/s Vel *Velocity of the high-density gas 75- 78 F4.1 kpc dist ?Distance of region 80- 81 I2 --- r_dist ?Reference to region data 83- 90 E8.1 solLum L(H2O) ?Maximum Luminosity of H2O emission
Note on Vela: Average of the mean velocities of the components of each spectrum. Note on Vel: Velocity of the high-density gas, taken as the average of the velocities of the CS and NH3 emission.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- RefNo *?=0 Reference number 4- 9 A6 --- RefID Reference abbreviation 11- 80 A70 --- Text Text of reference, starting by the 19-digit bibcode
Note on RefNo: All references are included in this table, and RefNo is repeated when several lines are necessary. Note that the reference numbers of table1.dat were changed compared to the printed version, to agree with the reference numbers used in table5.dat.
Table 3: Summary of the sources observed in CS or NH3 --------------------------------------------------- CS NH3 --------------------------------------------------- Observed sources 107 164 Detected sources (SNR>5) 75 82 Detected sources (3<SNR<5) 2 13 Non-detected sources (SNR<3) 30 69 --------------------------------------------------- Table 4: Summary of the sources observed both in CS and NH3 ---------------------------------------------- Strength a b c ---------------------------------------------- Detected in NH3 (SNR>5) 61 1 9 Detected in NH3 (3<SNR<5) 4 0 2 Non-detected in NH3 (SNR<3) 8 1 13 ---------------------------------------------- a: Detected in CS (SNR>5) b: Detected in CS (3<SNR,5) c: Non-detected in CS (SNR<3) ----------------------------------------------
(End) N. G. Roman [ADC/SSDOO] 22-Jul-1997, rev. F. Ochsenbein [CDS] 01-Jan-2000
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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