J/AJ/133/2487 VERA 22GHz Fringe Search Survey (Petrov+, 2007)
VERA 22 GHz fringe search survey.
Petrov L., Hirota T., Honma M., Shibata K.M., Jike T., Kobayashi H.
<Astron. J., 133, 2487-2494 (2007)>
=2007AJ....133.2487P 2007AJ....133.2487P
ADC_Keywords: Radio sources ; Surveys ; Interferometry
Keywords: catalogs - radio continuum: general - surveys
Abstract:
This paper presents results of a survey search for bright compact
radio sources at 22GHz with the VERA radio interferometer.
Each source from a list of 2494 objects was observed in one scan for 2
minutes. The purpose of this survey was to find compact extragalactic
sources bright enough at 22GHz to be useful as phase calibrators.
Observed sources were either (1) within 6° of the Galactic plane,
or (2) within 11° of the Galactic center, or (3) within 2° of
known water masers. Among the observed sources, 549 were detected,
including 180 extragalactic objects that were not previously observed
with the very long baseline interferometry technique. Estimates of the
correlated flux densities of the detected sources are presented. It
was found that the probability of detecting a 200mJy source with 120s
of integration time is 60%.
Description:
The Galactic Plane Survey (GaPS) observations were scheduled mainly
within gaps between regular VERA observations (Table 1). Some
observations were performed only at three antennas when one of
the stations was not available.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 75 533 List of detected continuum spectrum sources
table3.dat 70 1945 List of not detected sources
--------------------------------------------------------------------------------
See also:
J/A+A/445/465 : ACTA 18.5 and 22GHz fluxes of Kuehr 5GHz sample (Ricci+, 2006)
J/PASJ/52/631 : Galactic plane VERA survey (Honma+, 2000)
J/AJ/119/2801 : 8.35 and 14.35GHz flux at Galactic plane (Langston+, 2000)
J/AJ/96/1655 : Galactic plane VLA survey (Garwood+ 1988)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- JName The IAU J2000.0 source name (JHHMM+DDMM)
12- 19 A8 --- BName The IAU B1950.0 source name (HHMM+DDd)
21- 22 I2 h RAh Hour of Right Ascension (J2000)
24- 25 I2 min RAm Minute of Right Ascension (J2000)
27- 31 F5.2 s RAs Second of Right Ascension (J2000)
33 A1 --- DE- Sign of the Declination (J2000)
34- 35 I2 deg DEd Degree of Declination (J2000)
37- 38 I2 arcmin DEm Arcminute of Declination (J2000)
40- 43 F4.1 arcsec DEs Arcsecond of Declination (J2000)
45 A1 --- Det [DM] Detection status (1)
47- 51 F5.2 Jy F1 ? Correlated flux density from 0-70
Megawavelengths baseline projections range
53- 57 F5.2 Jy F2 ? Correlated flux density from 70-100
Megawavelengths baseline projections range
59- 63 F5.2 Jy F3 ? Correlated flux density from 100-200
Megawavelengths baseline projections range
65- 71 E7.1 --- Prob Probability of false detection
73- 75 A3 --- Com New observation (G1)
--------------------------------------------------------------------------------
Note (1): Note as follows:
D = reliably detected, probability of false detection <1.0E-5;
M = marginally detected, probability of false detection
in range [1.0E-2, 1.0E-5].
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- JName The IAU J2000.0 source name (JHHMM+DDMM)
12- 19 A8 --- BName The IAU B1950.0 source name (HHMM+DDd)
21- 22 I2 h RAh Hour of Right Ascension (J2000)
24- 25 I2 min RAm Minute of Right Ascension (J2000)
27- 31 F5.2 s RAs Second of Right Ascension (J2000)
33 A1 --- DE- Sign of the Declination (J2000)
34- 35 I2 deg DEd Degree of Declination (J2000)
37- 38 I2 arcmin DEm Arcminute of Declination (J2000)
40- 43 F4.1 arcsec DEs Arcsecond of Declination (J2000)
45 A1 --- l_MinF Limit flag on MinF
46- 50 F5.2 Jy MinF Minimal flux density detection limit (1)
52- 56 F5.2 Jy AvrF Average flux density detection limit (1)
58- 62 F5.2 Jy MaxF Maximal flux density detection limit (1)
64- 66 I3 --- Num Number of observations correlated
68- 70 A3 --- Com New observation (G1)
--------------------------------------------------------------------------------
Note (1): Over all observations.
The flux density detection limit corresponds to S/N=6.0
--------------------------------------------------------------------------------
Global Notes:
Note (G1): Note as follows:
KNO = previously observed at X-band;
NEW = not observed with VLBI before.
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-May-2009