CCD photometric search for peculiar stars in open clusters - V. NGC 2099, NGC 3114, NGC 6204, NGC 6705 and NGC 6756

@article{Paunzen2003CCDPS,
  title={CCD photometric search for peculiar stars in open clusters - V. NGC 2099, NGC 3114, NGC 6204, NGC 6705 and NGC 6756},
  author={Ernst Paunzen and Hans Michael Maitzen and Osservatorio Astronomico di Padova Inaoe Inst. fur Astronomie d Wien and Austria and Dep. de Fisica and Facultad de Tecnolog{\'i}a and Universidad Nacional de Tucuman and Argentina.},
  journal={Astronomy and Astrophysics},
  year={2003},
  volume={412},
  pages={721-725}
}
We have investigated 1008 objects in the area of five intermediate age open clusters (NGC 2099, NGC 3114, NGC 6204, NGC 6705 and NGC 6756) via the narrow band Δa-system. The detection limit for photometric peculiarity is very low (always less than 0.009 mag) due to the high number of individual frames used (193 in total). We have detected six peculiar objects in NGC 6705 and NGC 6756 from which one in the latter is almost certainly an unreddened late type foreground star. The remaining five… 

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References

SHOWING 1-10 OF 16 REFERENCES
CCD photometric search for peculiar stars in open clusters - I. NGC 2169, Melotte 105 and NGC 6250
The search for chemically peculiar (CP) stars in open clusters using photoelectric photometry sampling the presence of the characteristic flux depression feature at 5200 A via the -system (Maitzen
CCD photometric search for peculiar stars in open clusters IV. Collinder 272, Pismis 20, Lyngå 14, NGC 6396 and NGC 6611 ?
The time scale on which chemical peculiarity in upper main sequence stars begins is unknown. Results from the Hipparcos measurements indicate that the classical chemically peculiar (CP) stars occupy
A comprehensive study of the rich open star cluster NGC 2099 based on deep BVI CCD observations
The CCD observations of the rich open star cluster NGC 2099 and its surrounding eld region have been carried out up to a limiting magnitude of V 22 mag in B, V and I passbands for the rst time. A
The intermediate age galactic cluster M11
We present a deep CCD investigation of stars in a selected region near the center of the galactic cluster M11. The cluster photometry has been extended to objects about 7 mag fainter than previous
Star clusters in the Carina complex: UBVRI photometry of NGC 3114, Collinder 228 and vdB-Hagen 99
In this paper we present and analyze CCD UBVRI photometry in the region of the three young open clusters NGC 3114, Collinder 228, and vdB-Hagen 99, located in the Carina spiral feature. NGC 3114 lies
The status of Galactic field λ Bootis stars in the post‐Hipparcos era
The λ Bootis stars are Population I, late B- to early F-type stars, with moderate to extreme (up to a factor 100) surface underabundances of most Fe-peak elements and solar abundances of lighter
Introduction to Astronomical Photometry
1. General Definitions and Energy Distribution for Various Spectral Types.- 1.1. Definition of Photometric Measurement, A Special Case of Astronomical Measurement.- 1.2. Description of the Energy
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1
2
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