Search results for "Medium band photometry"

showing 2 items of 2 documents

uvby{beta} photometry of h and chi Per

2002

We present CCD uvby{beta} photometry for stars in the nuclei of the young double cluster {h} and {chi} Persei. We find that the reddening is highly variable through the {h} Per nucleus, increasing from west to east, with values ranging from E(b-y)=0.328+/-0.022 in the western part to E(b-y)=0.465+/-0.025 in the south-east. Towards {chi} Persei the reddening is fairly constant, with E(b-y)=0.398+/-0.025. Both clusters share a common distance modulus of 11.7+/-0.1mag, and an age of logt=7.10+/-0.05 years. Cone search capability for table J/A+A/394/479/table6 (Coordinates and photometry for stars in h Per) Cone search capability for table J/A+A/394/479/table7 (Coordinates and photometry for st…

observational astronomyOpen star clustersPhotometryMedium band photometryAstrophysics and AstronomyH beta photometryPhysicsB starsCCD photometryNatural Sciencesstellar astronomyOptical astronomy
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NW Ser and V1446 Aql uvby light curves

2007

We present accurate photometric time series of two Be stars: NW Ser and V1446 Aql. Both stars were observed at the Observatorio de Sierra Nevada (Granada) in July 2003 with an automatic four-channel Stroemgren photometer. We also present a preliminary theoretical study showing that the periodic variations exhibited by these stars can be due to pulsation.

observational astronomyPhotometryMedium band photometryAstrophysics and AstronomyStellar AstronomyBe starsPhysicsNatural SciencesOptical astronomy
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