J/A+AS/124/85 OH emission from IRAS sources (Slysh+ 1997)
Further search for OH emission from IRAS sources.
Slysh V.I., Dzura A.M., Val'tts I.E., Gerard E.
<Astron. Astrophys. Suppl. Ser. 124, 85 (1997)>
=1997A&AS..124...85S 1997A&AS..124...85S (SIMBAD/NED BibCode)
ADC_Keywords: Infrared sources ; Masers ; Radio lines
Mission_Name: IRAS
Keywords: ISM: clouds - ISM: molecules - masers - radio lines: ISM - surveys
Abstract:
Results of a continued search for OH main line emission from IRAS
sources are reported. Towards a sample of 182 sources which consists
of IRAS sources selected by the colour criterion for ultracompact HII
region, and several IRAS cores, H2O masers and bipolar outflows, we
detected 19 new OH masers of Class I and 5 OH/IR candidates. The
correlation between IR and OH maser flux is confirmed. Also 51 thermal
and 4 absorption sources were detected. The low radial velocities and
derived OH column densities suggest that the thermal OH emission comes
from nearby dark clouds. There is evidence that IRAS sources towards
which thermal emission was detected are connected with these dark
clouds.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 103 77 Masers
table2 78 59 Thermal sources
tables.tex 174 444 LaTeX version of the tables
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See also:
II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)
Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name IRAS or other names
11 A1 --- n_Name [ab] Note (1)
13- 17 F5.1 deg GLON Galactic longitude
18- 22 F5.1 deg GLAT Galactic latitude
24- 29 F6.2 km/s V(1667MHz) ? Velocity (Gaussian fit for 1667MHz line)
31- 34 F4.2 km/s e_V(1667MHz) ? rms uncertainty on V(1667MHz)
36- 39 F4.2 km/s FWHM(1667MHz) ? FWHM (Gaussian fit for 1667MHz line)
41- 44 F4.2 km/s e_FWHM(1667MHz) ? rms uncertainty on FWHM(1667MHz)
46 A1 --- l_S1667MHz Limit flag on S1667MHz
47- 51 F5.2 Jy S1667MHz ? Flux (Gaussian fit for 1667MHz line)
53- 56 F4.2 Jy e_S1667MHz ? rms uncertainty on S1667MHz
57 A1 --- Pol [RLHVT] Polarization type (2)
59- 64 F6.2 km/s V(1665MHz) ? Velocity (Gaussian fit for 1665MHz line)
66- 69 F4.2 km/s e_V(1665MHz) ? rms uncertainty on V(1665MHz)
71- 75 F5.2 km/s FWHM(1665MHz) ? FWHM (Gaussian fit for 1665MHz line)
77- 80 F4.2 km/s e_FWHM(1665MHz) ? rms uncertainty on FWHM(1665MHz)
82 A1 --- l_S1665MHz Limit flag on S1665MHz
83- 86 F4.2 Jy S1665MHz ? Flux (Gaussian fit for 1665MHz line)
88- 91 F4.2 Jy e_S1665MHz ? rms uncertainty on S1665MHz
92 A1 --- Pol2 [RLHVT] Polarization type (2)
93 A1 --- Note [c] c: 1665Mhz parameters are 1612MHz OH
line ones (For 17269-2235 only)
95-103 A9 --- OtherName Other name
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Note (1): a: 1665 V profile centered at -21km/s and 1665 H profile at -27km/s
were not observed with high velocity resolution.
b: Detection reported in the Paper I.
Note (2): R: right circular polarization
L: left circular polarization
H: horizontal linear polarization
V: vertical linear polarization
T: line supposed to be thermal
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name IRAS or other names
12- 19 A8 --- Lynds Associations of an IRAS source with
nebulae of Lynds
21- 25 F5.1 deg GLON Galactic longitude
26- 30 F5.1 deg GLAT Galactic latitude
32 A1 --- l_S1667MHz Limit flag on S1667MHz
33- 37 F5.2 Jy S1667MHz Flux at 1667MHz (result of Gaussian fits)
39 A1 --- l_S1665MHz Limit flag on S1667MHz
40- 44 F5.2 Jy S1665MHz ? Flux at 1665MHz (result of Gaussian fits)
46- 50 F5.1 km/s RV Radial velocity (result of Gaussian fits)
52- 54 F3.1 km/s FWHM FWHM (result of Gaussian fits)
56- 60 F5.2 10+14cm-2 N(OH) ? Estimates of OH column density.
62- 67 F6.2 km/s V(CO) ? CO radial velocities
70 I1 --- r_V(CO) ? Reference for radial velocity (1)
72- 78 A7 --- IRAScloud Name of a associated IRAS cloud or core
(Wood et al. 1994, Cat. J/ApJS/95/457)
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Note (1): 1: Myers et al. (1983ApJ...264..517)
2: Terebey et al. (1989ApJ...340..472T 1989ApJ...340..472T)
3: Casoli et al. (1986A&A...169..281C 1986A&A...169..281C)
4: Heyer et al. (1987ApJ...321..370H 1987ApJ...321..370H)
5: Wouterloot and Brand (1989, Cat. J/A+AS/80/149)
6: de Geus et al. (1990A&A...231..137D 1990A&A...231..137D)
7: Benson et al. (1989)
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Acknowledgements: Eric Gerard
(End) Patricia Bauer [CDS] 12-Nov-1996