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UBV(RI)C JHK observations of Hipparcos-selected nearby stars
- C. Koen, D. Kilkenny, F. Wyk, F. Marang
- Physics
- 21 April 2010
We present homogeneous, standardized UBV(RI)C photometry for over 700 nearby stars selected on the basis of Hipparcos parallaxes. Additionally, we list JHK photometry for about half of these stars,…
The EC 14026 stars - VIII. PG 1336 - 018: a pulsating sdB star in an HW Vir-type eclipsing binary
- D. Kilkenny, D. O’Donoghue, C. Koen, A. Lynas-Gray, F. Wyk
- Physics
- 11 May 1998
Post-AGB stars with hot circumstellar dust: binarity of the low-amplitude pulsators
- H. Winckel, T. Evans, W. Zima
- Physics, Geology
- 24 June 2009
Context. The influence of binarity on the late stages of stellar evolut ion. Aims. While the first binary post-AGB stars were serendipitously d iscovered, the distinct characteristics of their…
The EC 14026 stars -- X. A multi-site campaign on the sdBV star PG 1605+072
- D. Kilkenny, C. Koen, S. Kawaler
- Physics
- 1 March 1999
Results are reported from a multi-site photometric campaign on PG 1605+072, a member of the recently discovered class of pulsating hot subdwarfs, or EC 14026 stars. The main part of the campaign…
Variability studies of Seyfert galaxies – I. Broad-band optical photometry
- H. Winkler, I. Glass, K. Sekiguchi
- Physics
- 15 August 1992
The results of a four-year campaign to monitor the variations of 35 southern Seyfert galaxies, using UBV(RI) c multi-aperture photometry, are presented. Most of the galaxies are found to be variable.…
Resolving the 47 Tucanae Distance Problem
- S. Percival, M. Salaris, F. Wyk, D. K. L. J. M. University, South African astronomical Observatory
- Physics
- 11 March 2002
We present new B-, V-, and I-band photometry for a sample of 43 local subdwarfs with Hipparcos parallax errors less than 13%, in the metallicity range -1.0 < [Fe/H] < -0.3, which we use to perform…
Frequency variability in the rapidly oscillating Ap star HR 3831: three more years of monitoring
- D. Kurtz, F. Wyk, D. Kilkenny
- Environmental Science
- 1 May 1997
Supplementary southern standards for UBV(RI)C photometry
- D. Kilkenny, F. Wyk, G. Roberts, F. Marang, D. Cooper
- Physics
- 11 February 1998
We present UBV(RI)C photometry for 80 southern red and blue stars for use as additional standards. The data are tied to the Johnson UBV and Cousins (RI)C systems and extend the range of the available…
THE UBV(RI)(C) COLORS OF THE SUN
- I. Ramirez, R. Michel, B. Castilho
- Physics, Geology
- 3 April 2012
Photometric data in the UBV(RI)C system have been acquired for 80 solar analog stars for which we have previously derived highly precise atmospheric parameters T eff, log g, and [Fe/H] using…
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