VizieR Online Data Catalog: p-mode-dominated subdwarf B pulsators in binaries (Reed+, 2019)

As part of our follow-up spectroscopic survey (Telting et al. 2012ASPC..452..147T) of Kepler-observed sdBV stars, we used ALFOSC at the 2.6m Nordic Optical Telescope (see Djupvik & Andersen 2010ASSP...14..211D for a description of instrumentation), with grism #18 and a 0.5arcsec slit providing R=2000 resolution or 2.2Å, to obtain 5 spectra of PG 0048+091 and 12 of PG 1315-123. The instrument was equipped with CCD8 for the first 4 spectra of PG 1315-123 and later with CCD14 for the remaining spectra of both stars. The exposure time was 600s, giving 53<signal to noise (S/N)<70 for PG 0048+091 and 26<S/N<71 for PG 1315-123. The data were homogeneously reduced and analysed. Standard reduction steps within iraf included bias subtraction, removal of pixel-to-pixel sensitivity variations, optimal spectral extraction, and wavelength calibration based on arc-lamp spectra. The target spectra and the mid-exposure times were shifted to the barycentric frame of the Solar system. A final pixel shift was applied to the velocity scale, to account for non-perfect centring of the target in the slit, based on slit images taken directly before and after the spectral exposures.

(6 data files).