Multi-wavelength photometric variation of PG1605+072

TL;DR

This study presents a comprehensive multi-wavelength photometric analysis of the pulsating sdB star PG1605+072, combining spectroscopic and photometric data across various wavelengths to enhance understanding of its pulsation modes.

Contribution

It provides a detailed analysis of multi-wavelength photometric data, including chromatic amplitudes, to complement existing spectroscopic observations of PG1605+072.

Findings

Identification of chromatic amplitudes across four colours

Enhanced understanding of pulsation modes through multi-wavelength data

Complementary FUV spectra and light curves analyzed

Abstract

In a large coordinated attempt to further our understanding of the $p$-mode pulsating sdB star PG1605+072, the Multi-Site Spectroscopic Telescope (MSST) collaboration has obtained simultaneous time-resolved spectroscopic and photometric observations. The photometry was extended by additional WET data which increased the time base. This contribution outlines the analysis of the MSST photometric light curve, including the four-colour BUSCA data from which chromatic amplitudes have been derived, as well as supplementary FUV spectra and light curves from two different epochs. These results have the potential to complement the interpretation of the published spectroscopic information.