J/A+AS/122/79 Galactic Bulge Region OH 1612MHz survey. I. (Sevenster+ 1997)
The ATCA/VLA OH 1612 MHz survey. I. Observations of the Galactic Bulge Region
Sevenster M.N., Chapman J.M., Habing H.J., Killeen N.E.B., Lindqvist M.
<Astron. Astrophys. Suppl. Ser. 122, 79 (1997)>
=1997A&AS..122...79S 1997A&AS..122...79S (SIMBAD/NED BibCode)
ADC_Keywords: Radio lines ; Masers
Keywords: techniques: image processing - surveys - stars: AGB and post-AGB -
Galaxy: Center - radio lines: stars - Galaxy: stellar content
Abstract:
We present observations of the region between |l|≤10° and
|b|≤3° in the OH 1612.231MHz line, taken in 1993 October and
November with the Australia Telescope Compact Array. The region was
systematically searched for OH/IR stars and was covered completely
with 539 pointing centres separated by 30'. The size of the dataset
calls for a special reduction technique that is fast, reliable and
minimizes the output (positions and velocities of possible stars
only). Having developed such a reduction method we found 307 OH masing
objects, 145 of which are new detections. Out of these, 248 have a
standard double-peaked spectral profile, 55 a single-peaked profile
and 4 have nonstandard or irregular profiles. In this article we
analyse the data statistically and give classifications and
identifications with known sources where possible. The astrophysical,
kinematical, morphological and dynamical properties of subsets of the
data will be addressed in future articles. These observations are part
of a larger survey, covering |l|≤45° and |b|≤3°, with the
Australia Telescope Compact Array and the Very Large Array. The
electronic version of this paper, that includes table and spectra, can
be obtained from http://www.ed-phys.fr.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 139 307 Compact OH-maser sources
fig2a.eps 83 8416 The spectra for all the sources in Table 1
fig2b.eps 83 8299 figure2 continued
fig2c.eps 83 8419 figure2 continued
fig2d.eps 83 8481 figure2 continued
fig2e.eps 83 8163 figure2 continued
fig2f.eps 83 8294 figure2 continued
fig2g.eps 83 8552 figure2 continued
fig2h.eps 83 8308 figure2 continued
fig2i.eps 83 8498 figure2 continued
fig2j.eps 83 8415 figure2 continued
fig2k.eps 83 8204 figure2 continued
table1.tex 290 766 LaTeX version of table1
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See also:
J/A+AS/124/509 : ATCA/VLA OH 1612 MHz survey. II. (Sevenster+ 1997)
Byte-by-byte Description of file: table1
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Bytes Format Units Label Explanations
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2- 4 I3 --- No Source number
6- 21 A16 --- Name Source name (based on galactic longitude
and latitude)
23 A1 --- Type Spectrum type
25- 26 I2 h RAh Right ascension J2000
28- 29 I2 min RAm Right ascension J2000
31- 36 F6.3 s RAs Right ascension J2000
38 A1 --- DE- Declination sign
39- 40 I2 deg DEd Declination J2000
42- 43 I2 arcmin DEm Declination J2000
45- 49 F5.2 arcsec DEs Declination J2000
51- 54 F4.2 arcsec Delta Position scatter
56- 59 F4.1 arcmin R Offset from pointing centre
61- 66 F6.1 km/s VL Velocity blue-shifted peak
68- 73 F6.1 km/s VH ? Velocity red-shifted peak
75- 80 F6.1 km/s VC ? Velocity central star
82- 85 F4.1 km/s VE ? Outflow velocity shell
87- 93 F7.3 Jy SL Flux density blue-shifted peak
95-101 F7.3 Jy SH ? Flux density red-shifted peak
103-105 I3 mJy Rms Rms noise in empty cubes
107-108 I2 --- Ref ? Number reference for previous detection
110-119 A10 --- IRAS Name of nearest IRAS point source II/125
121-126 F6.3 --- N Distance to nearest IRAS PS as fraction of IRAS
error ellipse
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(End) M.N. Sevenster [Sterrewacht Leiden, NL] 19-Jul-1996