J/other/KFNT/27.299 ICRF stars near extragalactic radio sources (Ryl'kov+ 2011)
A compiled catalogue of reference stars around 227 ICRF extragalactic radio
sources.
Ryl'kov V.P., Narizhnaya N.V., Dement'eva A.A., Pinigin G.I.,
Maigurova N.V., Martinov M.V.
<Kinematika Fiz. Nebesn. Tel., 27, 299-303 (2011)>
=2011KFNT...27..299R 2011KFNT...27..299R
ADC_Keywords: Fundamental catalog ; Radio sources ; Positional data
Keywords: extragalactic radio sources - astrometric data -
astrometric reference star
Abstract:
The compiled catalogue of 231044 stars was created from photographic
and CCD observations of position catalogues observed by ground based
telescopes. The catalogue destine for optical observations VLBI-ICRS
astrometrical extragalactic radiosources (ERS) with telescopes
equiped with CCD-cameras.
The main purpose of this catalogue is to ensure the reference stars
in optics for reducing positions of faint astrometrical ERS 17-22mag
relative to more bright reference stars 14-17mag. The catalogue
contains 231044 star positions in fields 40'x40' near 240 ERS.
More than nine catalogues of stars coordinates were used for compiling
the Pul-ERS catalogue. For 69% of stars the proper motions were taken
from UCAC3 catalogue to convert the position stars to the common
epoch. The number of position measurements for each star varies from
one to more than ten records. The inner precision of positions of
stars in Pul-ERS is from 4 to 150mas. 159331 stars of the compiled
catalogue were identified with stars of the UCAC3. The average internal
accuracy of positions on both coordinates is not worse 0.11".
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ccrsdat.dat 95 231044 Compiled catalogue of reference stars around
extragalactic radio sources: positions,
magnitudes and proper motions
centers.dat 46 240 Identification ERS and coordinate of centers
of 240 fields with ERS
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA, 1997)
I/259 : The Tycho-2 Catalogue (Hog+ 2003)
I/304 : Carlsberg Meridian Catalog (CMC 14) (CMC, 2006)
I/315 : UCAC3 Catalogue (Zacharias+, 2009)
I/251 : VLBI International Celestial Reference Frame (ICRF) (Ma+, 1997)
I/323 : International Celestial Reference Frame 2, ICRF2 (Ma+, 2009)
Byte-by-byte Description of file: ccrsdat.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- Seq [1/231044] Sequential Number Compiled catalogue
8- 18 F11.7 deg RAdeg Right ascension (Eq=J2000.0, on Epoch)
20- 22 I3 mas e_RAdeg [0/998] Internal error of RA (1)
24- 25 I2 --- o_RAdeg [3/14] Number of used observations RA
27- 37 F11.7 deg DEdeg Declination (Eq=J2000.0, on Epoch)
39- 41 I3 mas e_DEdeg [0/990] Internal error of DE (1)
43- 44 I2 --- o_DEdeg [2/14] Number of used observations DE
46- 53 F8.3 yr Epoch [1973/2010] Mean epoch of observation for the
right ascension and declination
55- 59 F5.2 mag f.mag [4.4/17] UCAC3 fit model magnitude (579-642nm)
61- 62 I2 h RAh Right ascension (Eq=J2000.0, on Epoch)
63- 64 I2 min RAm Right ascension (Eq=J2000.0, on Epoch)
65- 70 F6.3 s RAs Right ascension (Eq=J2000.0, on Epoch)
72 A1 --- DE- Declination sign (Eq=J2000.0, on Epoch)
73- 74 I2 deg DEd Declination (Eq=J2000.0, on Epoch)
75- 76 I2 arcsec DEm Declination (Eq=J2000.0, on Epoch)
77- 81 F5.2 arcsec DEs Declination (Eq=J2000.0, on Epoch)
83- 88 F6.1 mas/yr pmRA [-520/801]?=9999.9 Proper motion in RA (2)
90- 95 F6.1 mas/yr pmDE [-999.9/371]?=9999.9 Proper motion in DE (2)
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Note (1): error of RA, DE for calculate of middle position
Note (2): proper motion from UCAC3 for near to UCAC3 stars; if the proper
motion of star in the used catalogues was absent, then the meaning of
pmRA, pmDE are given a value equal to 9999.9.
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Byte-by-byte Description of file: centers.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- IERS Name of ERS (old classification,
HHMM+DDd, B1950)
10- 24 A15 --- ICRF Identification name from Ma et al.,
Cat. I/151, HHMMSS.s+DDMMSS, J2000)
26- 27 I2 h RAh Right ascension (Eq=J2000.0,ICRF)
28- 29 I2 min RAm Right ascension (Eq=J2000.0,ICRF)
30- 35 F6.3 s RAs Right ascension (Eq=J2000.0,ICRF)
37 A1 --- DE- Declination sign (Eq=J2000.0,ICRF)
38- 39 I2 deg DEd Declination (Eq=J2000.0,ICRF)
40- 41 I2 arcmin DEm Declination (Eq=J2000.0,ICRF)
42- 46 F5.2 arcsec DEs Declination (Eq=J2000.0,ICRF)
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Acknowledgements:
Ryl'kov Vladimir, vrylk1145(at)yandex.ru
Narizhnaya Natalia, nnat(at)gao.spb.ru
References:
1. Ma C., Arias E.F., Eubanks T.M., et al.,1998, Astron.J., v.116, 516-546,
The International Celestial Reference Frame as Realized by Very Long
Baseline Interferometry. Cat. I/151
2. Babenko Y., Daniltsev A., Pinigin G., Ryl'kov V., et al., 2003, Romanian
Astronomical Jurnal, v.13, N1, 77-81, Reduction of Compiled Catalogue in
the Selected Extragalactic Radio Source Fields. Preliminary Estimation.
3. Ryl'kov V., Dement'eva A., Narizhnaya N., et al. 2005, Kinematics and
Physics of Celestial Bodies, Supl.Ser., N5, 328-332, Compiled Catalogue
of Reference Stars around Extragalactic Radio Sources, Reduction
Techniques and the First Results,
4. Ryl'kov V., Narizhnaya N.,Dement'eva A., et al., 2013, Proceeding of the
GAO, N220, 541-546, Catalogue of 231043 stars for position observation of
Extragalactic Radio Sources.
(End) Ryl'kov and Narizhnaya [GAO, Russia], Patricia Vannier [CDS] 09-Oct-2014