J/A+A/366/481 ATCA/VLA OH 1612 MHz survey. III. (Sevenster+, 2001)
The ATCA/VLA OH 1612 MHz survey.
III. Observations of the Northern Galactic Plane.
Sevenster M.N., van Langevelde H.J., Moody R.A., Chapman J.M., Habing H.J.,
Killeen N.E.B.
<Astron. Astrophys. 366, 481 (2001)>
=2001A&A...366..481S 2001A&A...366..481S
ADC_Keywords: Masers ; Radio lines
Keywords: surveys - techniques: image processing - stars: AGB and post-AGB -
radio lines: stars - Galaxy: stellar content
Abstract:
We present observations of the region between 5°≤l≤45° and
|b|≤3°, in the OH 1612.231MHz line, taken from 1993 to 1995 with
NRAO's Very Large Array (VLA). These observations are the last part of
a larger survey, covering |l|≤45° and |b|≤3°, with the
Australia Telescope Compact Array (ATCA) and the VLA. The region was
systematically observed on a 30'x30' grid in (l,b) and the resulting
coverage was 92%, with 965 pointings. We found 286 OH-masing objects,
161 of which are new detections and 207 have reliable IRAS
point-source identifications. The outflow velocity was determined for
276 sources. A total of 766 sources were detected in the combined
ATCA/VLA survey, of which 29 were detected in two regions of the
survey.
Description:
File table2 contains information on the compact OH-maser sources
detected in the northern galactic Disk region with the Very Large
Array.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 138 286 Compact OH-maser sources in the
northern Galactic disk region
table2.tex 350 342 LaTeX version of table2
--------------------------------------------------------------------------------
See also:
J/A+AS/122/79 : Galactic Bulge Region OH 1612MHz survey. I. (Sevenster+ 1997)
J/A+AS/124/509 : ATCA/VLA OH 1612 MHz survey. II. (Sevenster+ 1997)
Table 1 : All observing runs, with array configuration, RFI type, maximum
baseline length (ranging with observing direction and time of day)
and number of useful fields in the run.
--------------------------------------------------------------------------------
Date Array RFI types (1) UVMax N
--------------------------------------------------------------------------------
200293 AB G 75-110 73
080693 BC W, G, S206 30-37 71
090693 C W, G, S206 16-18 70
100693 C G 17-18 70
310893 C G, S226 7-12 73
020993 CD W, G 7-12 46
090993 CD W, G, S226 7-12 72
210594 AB W, G, S210 100-120 38
260594 AB W, G 70-120 69
280594 AB W, G, S200204 75-120 73
310594 AB W, G, S208 80-120 62
010694 AB W, G 75-105 59
030694 AB G 55 13
160994 BC W, G, S208225 25-37 62
210994 BC G, W 25-37 70
220994 BC G, W 24-37 74
210695 A W, G 180-200 51
--------------------------------------------------------------------------------
Note (1): Three kinds of RFI corrupted the data during most of the observing
dates. One was the usual broad-band Glonass RFI (G), often accompanied by a
single-channel spike (S, sub-/superscripts indicating channel of spike). The
third was interference from a nearby military base (W), depending in strength
on u-v direction rather than baseline length, which saturated the correlator
to give non-random noise characteristics.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Seq Source number
5- 20 A16 --- Name Name in the OHl-b convention (offset 2000)
22- 27 I6 "DDMMYY" Obs ?=000000 Date of observation (1)
29- 30 I2 h RAh Right ascension of the brightest peak (J2000)
32- 33 I2 min RAm Right ascension of the brightest peak (J2000)
35- 40 F6.3 s RAs Right ascension of the brightest peak (J2000)
42 A1 --- DE- Declination sign of the brightest peak (J2000)
43- 44 I2 deg DEd Declination of the brightest peak (J2000)
46- 47 I2 arcmin DEm Declination of the brightest peak (J2000)
49- 53 F5.2 arcsec DEs Declination of the brightest peak (J2000)
55- 59 F5.3 arcsec errPos ? Formal measurement error in position
60 A1 --- n_errPos [N] N: undetermined errPos
61- 64 F4.1 arcmin Offset Radial offset of the source from
pointing centre
66- 71 F6.1 km/s VL Line-of-sight velocity with respect to the LSR
of the blue-shifted peak
73- 78 F6.1 km/s VH ? Line-of-sight velocity with respect to the
LSR of the red-shifted peak
(absent for single-peaked sources)
80- 85 F6.1 km/s VC Stellar velocity
(average of red- and blue-shifted velocities)
87- 90 F4.1 km/s VE Outflow velocity (half the peak separation;
zero for single-peaked sources)
92- 97 F6.3 Jy FpL Flux density of the blue-shifted peak
99-105 F7.3 Jy FpH ? Flux density of the red-shifted peak
107 A1 --- n_Fpeak [*] *: sources for which there is an extra
calibration error in the flux density
109-113 F5.1 Jy e_Fpeak ? Formal measurement error in flux density
114 A1 --- neFpeak [N*] N: Errors were undetermined
115-117 I3 mJy Rms Empirical noise in `empty' cube
119 A1 --- Flag [*+x-] OH identification symbol (2)
121-130 A10 --- IRAS IRAS point source with highest identification
probability N
132-138 F7.3 --- N Ratio between the size of the error ellipse
of, and the distance to, the IRAS PS,
in the direction of the OH position
--------------------------------------------------------------------------------
Note (1): Date `000000' means data were taken during more than one observing run
Note (2): OH identification symbols:
*: ATCA Bulge survey
x: te Lintel H. et al., 1989A&AS...78..399T 1989A&AS...78..399T
+: other identification
-: no previous identification
--------------------------------------------------------------------------------
Acknowledgements: Maartje Sevenste
(End) Patricia Bauer [CDS] 14-Nov-2000