Publikace ÚTF

The All-Sky Automated Survey for Supernovae (ASAS-SN) provides long baseline (~4 yr) light curves for sources brighter than V ? 17 mag across the whole sky. As part of our effort to characterize the variability of all the stellar sources visible in ASAS-SN, we have produced ~30.1 million V-band light curves for sources in the Southern hemisphere using the APASS DR9 (AAVSO Photometric All-Sky Survey Data Release) catalogue as our input source list. We have systematically searched these sources for variability using a pipeline based on random forest classifiers. We have identified ~ 220 000 variables, including ~ 88 300 new discoveries. In particular, we have discovered ~ 48 000 red pulsating variables, ~ 23 000 eclipsing binaries, ~ 2200 d-Scuti variables, and ~ 10 200 rotational variables. The light curves and characteristics of the variables are all available through the ASAS-SN variable stars data base (https://asas-sn.osu.edu/variables). The pre-computed ASAS-SN V-band light curves for all the ~ 30.1 million sources are available through the ASAS-SN photometry data base (https://asas-sn.osu.edu/photometry). This effort will be extended to provide ASAS-SN light curves for sources in the Northern hemisphere and for V ? 17 mag sources across the whole sky that are not included in APASS DR9.