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UBV(RI)C JHK observations of Hipparcos-selected nearby stars
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,
Post-AGB stars with hot circumstellar dust: binarity of the low-amplitude pulsators
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
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
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
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
Supplementary southern standards for UBV(RI)C photometry
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
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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