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J/A+AS/53/181  Star positions in 14 southern galactic clusters (Andersen+, 1983)

Positions of stars in regions of 14 southern galactic clusters. Andersen T.B., Reiz A. <Astron. Astrophys. Suppl. Ser. 53, 181 (1983)> =1983A&AS...53..181A
ADC_Keywords: Associations, stellar ; Positional data Keywords: photographic astrometry - galactic clusters - field correctors - Ritchey-Chretien telescopes Abstract: Positions for a total of 3487 stars, scattered over 14 regions, have been determined using the Danish 1.5-m telescope at La Silla. The 14 regions are centred on one of the southern galactic clusters NGC 1981, 2287, 2437, 2451, 2516, 2546, 2547, 2548, 3114, 3532, IC 2391, 2395, 2602 and Trumpler 10. Combining the Ritchey-Chretien reflector optics with a single element Schmidt-type corrector, gives a considerably enlarged flat field (radius about 25 minutes of arc, or 95mm) with stellar images of excellent definition. With the exception of distortion, which can be allowed for, the effect of the primary aberrations is negligible. A frame of reference has been established for each region using ESO Schmidt plates centred on the clusters, each plate containing from 20 to 35 measurable Perth 70 stars. These objects have served for determining positions of some 200 to 400 fainter stars within a central field of 25 minutes of arc radius, covering the corresponding 1.5-m plates. The fainter stars serve as a secondary standard. Based on three 1.5-m plates for each region, taken on different nights, an internal mean error in one plate position in the range 0.030 to 0.048 seconds of arc has been derived. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 05 35 12.0 -04 26 00 NGC 1981 06 46 54.0 -20 44 00 NGC 2287 07 41 48.0 -14 49 00 NGC 2437 07 45 24.0 -37 58 00 NGC 2451 07 58 18.0 -60 52 00 NGC 2516 08 12 24.0 -37 38 00 NGC 2546 08 10 25.7 -49 10 03 NGC 2547 08 13 48.0 -05 48 00 NGC 2548 10 02 42.0 -60 07 00 NGC 3114 11 05 33.0 -58 43 48 NGC 3532 08 40 12.0 -53 04 00 IC 2391 08 42 37.0 -48 06 48 IC 2395 10 44 18.0 -64 19 48 IC 2602 08 47 48.0 -42 29 00 Cl Trumpler 10 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 94 3487 Positions of 3487 stars in 14 southern open clusters
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [Cl*] 5- 15 A11 --- Cl Cluster name 17- 18 A2 --- --- [AR] 20- 22 I3 --- Seq Star designation in Cluster (<Cl* Cluster AR NNN> in Simbad) 24- 25 I2 h RAh Right ascension (1950.0) 27- 28 I2 min RAm Right ascension (1950.0) 30- 35 F6.3 s RAs Right ascension (1950.0) 37 A1 --- DE- Declination sign (1950.0) 38- 39 I2 deg DEd Declination (1950.0) 41- 42 I2 arcmin DEm Declination (1950.0) 44- 48 F5.2 arcsec DEs Declination (1950.0) 50- 60 A11 --- CPD CPD (I/108) or Zh (Zurhellen, 1909VeBon..11....1Z) or ZS (Li Khen, 1954, Ann. Obs. Astron. Zo-Se 23, 1) designation 62- 72 A11 --- BD/CD BD (I/122) or CD (I/114) designation 74- 77 A4 --- --- [AC#1] 79- 83 I5 ---- AC1 ? AC1 designation (1) 84 A1 --- u_AC1 [?] Uncertainty flag on AC1 86- 89 A4 ---- --- [AC#2] 91- 94 I4 ---- AC2 ? AC2 designation (1)
Note (1): Plates from the Astrographic Catalogue used for identification: ------------------------------------------------------------------- Region AC Zone Plate #1 Plate #2 ------------------------------------------------------------------- NGC 1981 San Fernando -05° 05h 32min NGC 2287 Byderabad -21° 06h 44min NGC 2437 Tucubaya -14° 07h 36min NGC 2451 Perth -38° 07h 40min NGC 2516 Sydney -61° 07h 52min NGC 2546 Perth -37° 08h 05min -37° 08h 15min NGC 2547 Cape -49° 08h 06min NGC 2548 San Fernando -05° 08h 04min -05° 08h 12min NGC 3114 Sydney -60° 09h 52min -60° 10h 08min NGC 3532 Sydney -58° 11h 00min IC 2391 Sydney -53° 08h 30min -53° 08h 42min IC 2395 Cape -48° 08h 40min IC 2602 Sydney -64° 10h 30min -64° 10h 48min Tr 10 Cape -42° 08h 40min -42° 08h 50min -------------------------------------------------------------------
History: * 17-Jan-2011: Prepared via OCR at CDS. * 01-Jul-2011: Some CPD/BD and CD designation corrected by CDS
(End) Marie-Jose Wagner, Patricia Vannier [CDS] 10-Jan-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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