{
  "id": "1705.01185",
  "version": "v1",
  "published": "2017-05-02T21:54:23.000Z",
  "updated": "2017-05-02T21:54:23.000Z",
  "title": "Nearby, Young, Active, Late-type Dwarfs in {\\it Gaia}'s First Data Release",
  "authors": [
    "Joel H. Kastner",
    "Germano Sacco",
    "David Rodriguez",
    "Kristina Punzi",
    "B. Zuckerman",
    "Laura Vican Haney"
  ],
  "comment": "30 pages, 4 tables, 7 figures; to appear in The Astrophysical Journal",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "The Galex Nearby Young Star Survey (GALNYSS) has yielded a sample of $\\sim$2000 UV-selected objects that are candidate nearby ($D \\stackrel{<}{\\sim}$150 pc), young (age $\\sim$10--100 Myr), late-type stars. Here, we evaluate the distances and ages of the subsample of (19) GALNYSS stars with Gaia Data Release 1 (DR1) parallax distances $D \\le 120$ pc. The overall youth of these 19 mid-K to early-M stars is readily apparent from their positions relative to the loci of main sequence stars and giants in Gaia-based color-magnitude and color-color diagrams constructed for all Galex- and WISE-detected stars with parallax measurements included in DR1. The isochronal ages of all 19 stars lie in the range $\\sim$10--100 Myr. Comparison with Li-based age estimates indicates a handful of these stars may be young main-sequence binaries rather than pre-main sequence stars. Nine of the 19 objects have not previously been considered as nearby, young stars, and all but one of these are found at declinations north of $+$30$^\\circ$. The Gaia DR1 results presented here indicate that the GALNYSS sample includes several hundred nearby, young stars, a substantial fraction of which have not been previously recognized as having ages $\\stackrel{<}{\\sim}$100 Myr.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-05-02T21:54:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "late-type dwarfs",
      "first data",
      "galex nearby young star survey",
      "main sequence stars"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 30,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}