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J/A+A/373/153       CCD Δa-photometry of 5 open clusters (Paunzen+, 2001)

CCD photometric search for peculiar stars in open clusters. II. NGC 2489, NGC 2567, NGC 2658, NGC 5281 and NGC 6208 Paunzen E., Maitzen H.M. <Astron. Astrophys. 373, 153 (2001)> =2001A&A...373..153P
ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, narrow-band Keywords: stars: chemically peculiar - stars: early-type - techniques: photometric - open clusters and associations: general Description: High accurate photometric data in the three filter, narrow band Delta a-system for five open clusters (NGC 2489, NGC 2567, NGC 2658, NGC 5281 and NGC 6208) are presented permitting one to detect apparent chemically peculiar stars. The ages and distances are wide spread to improve the statistics of peculiar stars in our Milky Way. A total of 235 stars within these clusters have been observed. We have detected ten apparent peculiar objects (six with significant positive and four with negative Δa-values) in four open clusters. Although three of them within the boundaries of NGC 2567 are probably not members of this cluster. Since no Stromgren uvbybeta data are available from the literature, Johnson UB-Vphotometry was used to test and calibrate our photometric data. The results from a comparison of both systems are excellent. The tables presented here include all photometric observations of these five clusters. For a description of the Δa photometric system, see e.g. GCPD/75 Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 07 56 12 -30 04 NGC 2489 08 18 27.1 -30 38 52 NGC 2567 08 43 24 -32 39 NGC 2658 13 46 36 -62 54 NGC 5281 16 49 30 -53 49 NGC 6208 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 75 59 Observed program stars of NGC 2489 table5.dat 75 50 Observed program stars of NGC 2567 table6.dat 73 55 Observed program stars of NGC 2658 table7.dat 72 30 Observed program stars of NGC 5281 table8.dat 73 41 Observed program stars of NGC 6208
See also: J/A+A/371/L5 : CCD Δa-photometry of NGC 1866 (Maitzen+, 2001) J/A+A/385/867 : NGC 2439, 3960, 6134, 6192 and 6451 (Paunzen+, 2002) J/A+A/395/823 : Collinder 272, Pismis 20, Lynga 14, NGC 6396 and 6611 (Paunzen+, 2002) J/A+A/412/721 : NGC 2099, 3114, 6204, 6705 and 6756 (Paunzen+, 2003) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 2 I2 --- No1 Notation for stars sorted after X and Y 4- 5 I2 --- LJ ? Notation according to Lindoff & Johansson (1968ArA.....5...45L, NGC 2489 NNN) 7- 8 I2 --- RP ? Notation according to Ramsay & Pollaco (1992, Cat. J/A+AS/94/73, Cl* NGC 2489 RP NNN) 11- 15 F5.1 pix Xpix X-coordinate 18- 22 F5.1 pix Ypix Y-coordinate 25- 29 F5.2 mag Vmag Mean V value 32- 36 F5.3 mag a Mean a index 38- 42 F5.3 mag e_a rms uncertainty on a 44- 49 F6.3 mag g1-y Mean (g1-y) index 51- 55 F5.3 mag e_g1-y rms uncertainty on (g1-y) 57- 62 F6.3 mag da(g1-y) Deviation from cluster line (Δa) 65- 68 F4.2 mag B-V ? (B-V) from the literature 70- 75 F6.3 mag da(B-V) ? Deviation from cluster line (Δa)
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 2 I2 --- No1 Notation for stars sorted after X and Y 4- 5 I2 --- L ? Notation according to Lindoff (1968ArA.....4..587L) 7- 9 I3 --- RP ? Notation according to Ramsay & Pollaco (1992 Cat. J/A+AS/94/73, Cl* NGC 2567 RP NNN) 12- 16 F5.1 pix Xpix X-coordinate 19- 23 F5.1 pix Ypix Y-coordinate 26- 30 F5.2 mag Vmag Mean V value 33- 37 F5.3 mag a Mean a index 39- 43 F5.3 mag e_a rms uncertainty on a 45- 50 F6.3 mag g1-y Mean (g1-y) index 52- 56 F5.3 mag e_g1-y rms uncertainty on (g1-y) 58- 63 F6.3 mag da(g1-y) Deviation from cluster line (Δa) 65- 68 F4.2 mag B-V ? (B-V) from the literature 70- 75 F6.3 mag da(B-V) ? Deviation from cluster line (Δa)
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 2 I2 --- No1 Notation for stars sorted after X and Y 4- 6 I3 --- RP ? Notation according to Ramsay & Pollaco (1992 Cat. J/A+AS/94/73, Cl* NGC 2658 RP NNN)) 9- 13 F5.1 pix Xpix X-coordinate 16- 20 F5.1 pix Ypix Y-coordinate 23- 27 F5.2 mag Vmag Mean V value 30- 34 F5.3 mag a Mean a index 36- 40 F5.3 mag e_a rms uncertainty on a 42- 47 F6.3 mag g1-y Mean (g1-y) index 49- 53 F5.3 mag e_g1-y rms uncertainty on (g1-y) 55- 60 F6.3 mag da(g1-y) Deviation from cluster line (Δa) 63- 66 F4.2 mag B-V ? (B-V) from the literature 68- 73 F6.3 mag da(B-V) ? Deviation from cluster line (Δa)
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 2 I2 --- No1 Notation for stars sorted after X and Y 4- 5 I2 --- MV ? Notation according to Moffat & Vogt (1973A&AS...10..135M, Cl NGC 5281 NN) 8- 12 F5.1 pix Xpix X-coordinate 15- 19 F5.1 pix Ypix Y-coordinate 22- 26 F5.2 mag Vmag Mean V value 29- 33 F5.3 mag a Mean a index 35- 39 F5.3 mag e_a rms uncertainty on a 41- 46 F6.3 mag g1-y Mean (g1-y) index 48- 52 F5.3 mag e_g1-y rms uncertainty on (g1-y) 54- 59 F6.3 mag da(g1-y) Deviation from cluster line (Δa) 62- 65 F4.2 mag B-V ? (B-V) from the literature 67- 72 F6.3 mag da(B-V) ? Deviation from cluster line (Δa)
Byte-by-byte Description of file: table8.dat
Bytes Format Units Label Explanations
1- 2 I2 --- No1 Notation for stars sorted after X and Y 4- 6 I3 --- L ? Notation according to Lindoff (1972A&AS....7..231L, NGC 6208 NNNa) 9- 13 F5.1 pix Xpix X-coordinate 16- 20 F5.1 pix Ypix Y-coordinate 23- 27 F5.2 mag Vmag Mean V value 30- 34 F5.3 mag a Mean a index 36- 40 F5.3 mag e_a rms uncertainty on a 42- 47 F6.3 mag g1-y Mean (g1-y) index 49- 53 F5.3 mag e_g1-y rms uncertainty on (g1-y) 55- 60 F6.3 mag da(g1-y) Deviation from cluster line (Δa) 63- 66 F4.2 mag B-V ? (B-V) from the literature 68- 73 F6.3 mag da(B-V) ? Deviation from cluster line (Δa)
Acknowledgements: Ernst Paunzen History: Table5.dat was modified by the authors on 27-Aug-2001. References: Bayer et al., Paper I 2000A&AS..147...99B Paunzen & Maitzen, Paper III 2002A&A...385..867P, Cat. J/A+A/385/867 Paunzen et al., Paper IV 2002A&A...395..823P, Cat. J/A+A/395/823
(End) E. Paunzen [IfA, Vienna] , Patricia Bauer [CDS] 27-Aug-2001
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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