Smalley, B, Paunzen, E, Lüftinger, T, Moffat, AFJ, Pigulski, A, Rucinski, S, Sikora, J, Wade, GA and Weiss, W (2018) On the non-variability of HR 7653 (15 Vul) based on BRITE data. Bulgarian Astronomical Journal, 28. pp. 27-36. ISSN 1314-5592

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We present space-based BRITE photometric observations of the metallic line (CP1) star HR 7653 (15 Vul). This chemically peculiar star of the upper main sequence was suspected to show variability due to rotation and a magnetic field. Such a variabilityis quite unusual among the, in general, non-magnetic CP1 stars. We investigated the astrophysical parameters of HR 7653 placing it close to the terminal age main sequence or even in the subgiant phase. The longest BRITE data set has a time base of 18.01 d from which we conclude that there are no coherent long-period variations (>1 d) visible above 2.1mmag in the red and 6.6mmag in the blue. Furthermore, we searched for Scuti type pulsations. On the basis of a discrete Fourier analysis method, we find no peaks in the Fourier spectra above 0.5mmag and 8.6mmag, for the red and blue filters, respectively.

Item Type: Article
Additional Information: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Bulgarian Academy of Sciences at - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: stars, early-type, fundamental parameters, techniques, photometric
Subjects: Q Science > QB Astronomy > QB460 Astrophysics
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Depositing User: Symplectic
Date Deposited: 28 Mar 2018 08:43
Last Modified: 28 Mar 2018 08:55

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