منابع مشابه
Multiaperture UBV RIzJHK Photometry of Galaxies in the Coma Cluster
We present a set of UBV RIzJHKs photometry for 745 J +H band selected objects in a 22.5 × 29.2 region centered on the core of the Coma cluster. This includes 516 galaxies and is at least 80% complete to H = 16, with a spectroscopically complete sample of 111 cluster members (nearly all with morphological classification) for H < 14.5. For each object we present total Kron (1980) magnitudes and a...
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We report the first deep UBV RI CCD photometry of 2460 stars in the field of two poorly studied OB associations Bochum 1 and Bochum 6. We selected 15 and 14 probable members in Bochum 1 and Bochum 6 respectively using photometric criteria and proper motion data of Tycho 2. Our analysis indicates variable reddening having mean value of E(B − V ) = 0.47±0.10 and 0.71±0.13 mag for Bochum 1 and Boc...
متن کاملUBV JHKLM photometry and modeling of R Coronae Borealis
We present the results of UBV JHKLM photometry of RCrB spanning the period from 1976 to 2001. Studies of the optical light curve have shown no evidence of any stable harmonics in the variations of the stellar emission. In the L band we found semi-regular oscillations with the two main periods of ∼ 3.3 yr and ∼ 11.9 yr and the full amplitude of ∼ 0. 8 and ∼ 0. 6, respectively. The colors of the ...
متن کاملSynthetic photometry from ATLAS9 models in the UBV Johnson system
Several grids of synthetic UBV color indices computed in the Johnson system and based on ATLAS9 atmospheric models are compared and discussed. We present synthetic colors which differ from those computed by Kurucz (1995) only for the convective models and for a very small shift of the zero-points. We compare these colors, called C97, with colors computed by Kurucz (1993a), Kurucz (1995) (K95), ...
متن کاملUBV(RI)C photometric comparison sequences for symbiotic stars. II
We present accurate UBV(RI)C photometric sequences for an additional 20 symbiotic stars. As for the 20 targets of Paper I, the sequences extend over wide brightness and color ranges, and are suited to cover both quiescence and outburst phases. The sequences are intended to assist both present time photometry as well as measurement of photographic plates from historical archives.
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 1971
ISSN: 0004-6280,1538-3873
DOI: 10.1086/129097