{
  "id": "1907.10609",
  "version": "v1",
  "published": "2019-07-24T18:00:00.000Z",
  "updated": "2019-07-24T18:00:00.000Z",
  "title": "The ASAS-SN Catalog of Variable Stars V: Variables in the Southern Hemisphere",
  "authors": [
    "T. Jayasinghe",
    "K. Z. Stanek",
    "C. S. Kochanek",
    "B. J. Shappee",
    "T. W. -S. Holoien",
    "Todd A. Thompson",
    "J. L. Prieto",
    "Subo Dong",
    "M. Pawlak",
    "O. Pejcha",
    "J. V. Shields",
    "G. Pojmanski",
    "S. Otero",
    "N. Hurst",
    "C. A. Britt",
    "D. Will"
  ],
  "comment": "17 pages, 14 figures. Submitted to MNRAS",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "The All-Sky Automated Survey for Supernovae (ASAS-SN) provides long baseline (${\\sim}4$ yrs) light curves for sources brighter than V$\\lesssim17$ 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 ${\\sim}30.1$ million V-band light curves for sources in the southern hemisphere using the APASS DR9 catalog as our input source list. We have systematically searched these sources for variability using a pipeline based on random forest classifiers. We have identified ${\\sim} 220,000$ variables, including ${\\sim} 88,300$ new discoveries. In particular, we have discovered ${\\sim}48,000$ red pulsating variables, ${\\sim}23,000$ eclipsing binaries, ${\\sim}2,200$ $\\delta$-Scuti variables and ${\\sim}10,200$ rotational variables. The light curves and characteristics of the variables are all available through the ASAS-SN variable stars database (https://asas-sn.osu.edu/variables). The pre-computed ASAS-SN V-band light curves for all the ${\\sim}30.1$ million sources are available through the ASAS-SN photometry database (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$\\lesssim17$ mag sources across the whole sky that are not included in APASS DR9.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-07-24T18:00:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "southern hemisphere",
      "asas-sn catalog",
      "million v-band light curves",
      "pre-computed asas-sn v-band light curves",
      "asas-sn light curves"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}