VizieR Online Data Catalog: Rotationally variable A stars from TESS (Sikora+, 2019)

TESS is optimized to detect planetary transit signatures in light curves of MS dwarf stars having IC magnitudes of approximately 4-13 (Ricker et al. 2015JATIS...1a4003R). The passband of the filter used by the onboard photometer has an effective wavelength of ~7500Å and a width of ~4000Å (Sullivan et al. 2015ApJ...809...77S, Cat. J/ApJ/809/77). In this study, we used the 2-min PDC_SAP light curves processed by the TESS Science Team and available at the Mikulski Archive for Space Telescopes (MAST) (https://archive.stsci.edu/tess/). We refer the reader to Jenkins et al. (2016SPIE.9913E..3EJ) for a description of the pipeline that produces these light curves.

The TESS data considered in this study consist of targets located in sectors 1-4. These sectors are in the southern ecliptic and contain targets with right ascension (RA) values of RA<131° and RA>308° and declination (Dec) values of -85<Dec<+12°. The observations have been obtained over a period of ~4months from July 25 to November 14, 2018.

We have identified 134 high-probability candidate rotational variable stars based on 2-min cadence TESS light curves among a sample of 1962 A-type stars. More than half of these 134 stars (76 of 134) are identified in the literature as Ap stars, which are expected to exhibit photometric rotational modulation.

(1 data file).