75 citations · 581 across the 40 of their papers we have counts for
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An Investigation of Four Chemically Peculiar Stars with Photometric Periods below 12 Hours
Stefan Hümmerich, Klaus Bernhard, Ernst Paunzen +3
We present an investigation of three chemically peculiar (CP) stars and one CP star candidate which exhibit photometric periods below 12 hours. New spectroscopic observations have…
A New Sample of Mid-Infrared Bright, Long-Period Mira Variables from the MACHO Galactic Bulge Fields
Klaus Bernhard, Stefan Uttenthaler, Stefan Hümmerich
Mid-infrared bright objects in the direction of the Galactic Bulge were investigated using time series photometry from the MACHO data archive, which led to the discovery of a large…
An investigation of the RCB star candidate GDS J0702414-023501
Stefan Huemmerich, Klaus Bernhard
2MASS J07024146-0235017 = GDS J0702414-023501 was included in the "Catalogue enriched with R CrB stars" on grounds of its near- and mid-infrared colours. The object, which correspo…
New Photometrically Variable Magnetic Chemically Peculiar Stars in the ASAS-3 Archive
Stefan Hümmerich, Ernst Paunzen, Klaus Bernhard
The magnetic Ap or CP2 stars are natural atomic and magnetic laboratories and ideal testing grounds for the evaluation of model atmospheres. CP2 stars exhibiting photometric variab…
NSV 1907 - A new eclipsing, nova-like cataclysmic variable
Stefan Hümmerich, Rainer Gröbel, Franz-Josef Hambsch +6
NSV 1907, formerly listed as an irregular variable in variability catalogues, was classified as an Algol-type eclipsing binary in the Catalina Surveys Periodic Variable Star Catalo…
Fine detrending of raw Kepler and MOST photometric data of KIC 6950556 and HD 37633
Zdenek Mikulasek, Ernst Paunzen, Miloslav Zejda +8
We present a simple phenomenological method for detrending of raw Kepler and MOST photometry, which is illustrated by means of photometric data processing of two periodically varia…