I/290 Pulkovo catalogue of 58483 stars (Pul-3) (Khrutskaya+, 2004)
Pul-3: A catalogue of positions and proper motions of 58483 stars on the ICRS system at the Pulkovo plates with galaxies. Khrutskaya E.V.,Khovritchev M.Yu., Bronnikova N.M. <Izv. Glav. Astron. Obs., 216, 336-348 (2002)> The Pul-3 catalogue of 58483 stars on the Tycho-2 system. Khrutskaya E.V., Khovritchev M.Yu., Bronnikova N.M. <Astron. Astrophys., 418, 357-362 (2004)> =2002IzPul.216..336K =2004A&A...418..357K
ADC_Keywords: Photographic catalog; Stars, faint; Positional data; Proper motions Description: A catalogue of positions and proper motions of 58483 stars (Pul-3) has been constructed at the Pulkovo observatory. The Pul-3 is based on the results of measurements of the photographic plates ((x,y)-data) with galaxies (Deutsch's plan). The observations were made with Pulkovo Normal Astrograph (F=3467mm, D=330mm) during the periods from 1935 till 1960 (the first epoch) and from 1969 till 1986 (the second epoch). The radius of working field was 50 arcmin for all plates. The exposure times were 1 hour. All plates were taken near the meridian. The measurements of the plates were made at the Pulkovo observatory in 1970-s and in 1980-s with ASCORECORD measuring machine. Photographic magnitudes of these stars have been determined at the Pulkovo observatory. The Pulkovo plates contain stars mainly 12-16.5 magnitudes in 146 field in declination zone from -5 to +85 degrees. The maximal density of stars in the Pulkovo plates is 500 stars per square degree. The Tycho-2 catalogue (Cat. I/259) has been used as a reference catalogue for astrometric reductions of the photographic plates. The great stars density of the Tycho-2 provides 40-65 reference stars in working field of the Pulkovo plates. Only approximate equatorial coordinates of the optical centers of all plates had been known in initial stage of construction of the Pul-3 catalogue and thus recalculation of ones has been done. A six-parameter plate model has been used for the astrometric reduction of the plates. The residuals of the tangential coordinates of reference stars have been analysed to investigate residual systematic errors. The coma parameters have been determined and coma-dependent systematic errors have been excluded. The magnitude-dependent systematic errors and color-dependent ones were investigated. The most significant corrections for magnitude equation have been obtained for stars brighter than 9 magnitude and fainter than 14 magnitude. The most significant color corrections have been obtained in equatorial zone for declinations of stars. The corrected coordinates of all stars have been determined. On the whole, recalculation of the plates optical centers and taking into account of all revealed systematic errors provide improvement of the accuracy of coordinates of stars on 64mas and 51mas for right ascension and declination correspondingly. The new proper motions have been determined for all stars. The mean position has been calculated at the mean epoch of observations of each star using it proper motion. The mean epoch of the Pul-3 is 1963.25. The internal positional accuracy of the Pul-3 catalogue at the mean epoch of observations is 80mas. The internal accuracy of the proper motions is 5mas/yr. Comparisons of the Pul-3 with Tycho-2 and ARIHIP have been done. The Pul-3 external positional accuracy relative to Tycho-2 is 150mas at the mean epoch of the Pulovo plates. The Pul-3 catalogue successfully represents the Tycho-2 system for more than 50000 stars which are fainter than 12 magnitude in 146 fields. The stars from the Pul-3 catalogue may be used as reference stars for reductions of the positional CCD-observations of the extragalactic radio sources and small bodies of the Solar system. The 40-years difference between Pul-3 observational epoch and modern epoch will allow to determine high precision proper motions of the faint stars of the Pul-3 catalogue (about 2mas/yr-3mas/yr). Proper motions of stars from Pul-3 catalogue may be used for stellar kinematics investigations. There are two data files for user's convenience: - the file pul3.dat represents the Pul-3 catalogue; - the file centers.dat contains the equatorial coordinates of centers of the Pulkovo fields (RA, DE). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file pul3.dat 158 58483 Pul-3 catalogue centers.dat 83 146 Equatorial coordinates of the centers of the Pulkovo fields
See also: I/259 : The Tycho-2 Catalogue (Hog+ 2000) Byte-by-byte Description of file: pul3.dat
Bytes Format Units Label Explanations
1- 7 I7 --- Pul-3 *Pul-3 number 11- 12 I2 h RAh *Right Ascension J2000, at Epoch (hours) 14- 15 I2 min RAm Right Ascension J2000, at Epoch (minutes) 17- 22 F6.3 s RAs Right Ascension J2000, at Epoch (seconds) 26 A1 --- DE- Declination J2000, at Epoch (sign) 27- 28 I2 deg DEd *Declination J2000, at Epoch (degrees) 30- 31 I2 arcmin DEm Declination J2000, at Epoch (minutes) 33- 37 F5.2 arcsec DEs [0,60] Declination J2000, at Epoch (seconds) 41- 44 F4.2 arcsec e_RAs *?=0 rms error in RA*cos(DE) 48- 51 F4.2 arcsec e_DEs *?=0 rms error in DE 55- 61 F7.2 mas/yr pmRA Proper motion in RA*cos(DE) 65- 71 F7.2 mas/yr pmDE Proper motion in DE 75- 79 F5.2 mas/yr e_pmRA *?=0 rms error in pmRA*cos(DE) 83- 87 F5.2 mas/yr e_pmDE *?=0 rms error in pmDE 91- 98 F8.3 yr Epoch Mean epoch of observation 102-105 F4.1 mag Bmag *?=0 B magnitude obtained at Pulkovo 109 I1 --- Npos Number of positions used 113-115 I3 --- Flag *Indicator of overlap fields 119-122 I04 --- TYC1 *?=0 Tycho-2 (Cat. <I/259>) TYC1 number 123-127 I05 --- TYC2 *?=0 Tycho-2 (Cat. <I/259>) TYC2 number 128 I01 --- TYC3 *?=0 Tycho-2 (Cat. <I/259>) TYC3 number 132-137 I6 --- HIP *?=0 HIPPARCOS (Cat. <I/239>) number 141-143 I3 --- POSSI *?=0 Number from POSS-I survey 147-150 F4.1 mag Busno *?=0 B magnitude from USNO-A2.0 catalogue 154-157 F4.1 mag Rusno *?=0 R magnitude from USNO-A2.0 catalogue
Note on Pul-3: The first three symbols represent the number of the Pulkovo field, the last four symbols represent the star number in this field. Note on RAh, DEd: Equinox J2000.0, epoch of observation Note on e_RAs, e_DEs, e_pmRA, e_pmDE: The values are 0 if the errors were not determined (Npos=2). Note on Bmag: The value is 0, if magnitude was not determined. Note on Flag: The flag is 1 if star is situated in this field only, or the flag indicates the number of fields which contain this star. Note on TYC1, TYC2, TYC3, HIP: The value is 0 if star is not contained in the Tycho-2 or Hipparcos catalogues. Note on POSSI, Busno, Rusno: The values are 0 if star is not identified with USNO-A2.0 (Cat. I/252) catalogue.
Byte-by-byte Description of file: centers.dat
Bytes Format Units Label Explanations
1- 3 I3 --- NField Number of field in the Pul-3 7- 8 I2 h RAh Right Ascension J2000 (hours) 10- 11 I2 min RAm Right Ascension J2000 (minutes) 13- 16 F4.1 s RAs Right Ascension J2000 (seconds) 20 A1 --- DE- Declination J2000 (sign) 21- 22 I2 deg DEd Declination J2000 (degrees) 24- 25 I2 arcmin DEm Declination J2000 (minutes) 27- 28 I2 arcsec DEs Declination J2000 (seconds) 32- 35 I4 --- Nstars Number of stars in field 39- 82 A44 --- ICRF *ICRF Designations
Note on ICRF: If radio sources from ICRF-Ext.1 (see Cat. I/251 and http://hpiers.obspm.fr/webiers/results/icrf/Icrf.html) are situated in this Pulkovo field then their ICRF designations are given.
Author's address: Evgeniya Vladimirovna Khrutskaya
(End) Evgeniya Vladimirovna Khrutskaya [Central Astron.Obs.of RAS] 07-Oct-2003
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