{
  "id": "2310.09777",
  "version": "v1",
  "published": "2023-10-15T08:46:00.000Z",
  "updated": "2023-10-15T08:46:00.000Z",
  "title": "A global view on star formation: The GLOSTAR Galactic plane survey. IX. Radio Source Catalog III: 2<l<28, 36<l<40, 56<l<60 and |b|<1, VLA B-configuration",
  "authors": [
    "A. Y. Yang",
    "S. A. Dzib",
    "J. S. Urquhart",
    "A. Brunthaler",
    "S. -N. X. Medina",
    "K. M. Menten",
    "F. Wyrowski",
    "G. N. Ortiz-León",
    "W. D. Cotton",
    "Y. Gong",
    "R. Dokara",
    "M. R. Rugel",
    "H. Beuther",
    "J. D. Pandian",
    "T. Csengeri",
    "V. S. Veena",
    "N. Roy",
    "H. Nguyen",
    "B. Winkel",
    "J. Ott",
    "C. Carrasco-Gonzalez",
    "S. Khan",
    "A. Cheema"
  ],
  "comment": "25pages, 21 figures, has been accepted for publication in Astronomy & Astrophysics (A&A)",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "As part of the GLOSTAR (GLObal view of STAR formation in the Milky Way) survey, we present the high-resolution continuum source catalog for the regions (l = 2-28, 36-40, 56-60, &|b|<1.0), observed with the Karl G. Jansky Very Large Array (VLA) in its B-configuration. The continuum images are optimized to detect compact sources on angular scales up to 4\", and have a typical noise level of 1sigma ~ 0.08mJy/beam for an angular resolution of 1\", which makes GLOSTAR currently the highest resolution as well as the most sensitive radio survey of the northern Galactic plane at 4-8GHz. We extracted 13354 sources above a threshold of 5sigma and 5437 sources above 7sigma that represent the high-reliability catalog. We determined the in-band spectral index (alpha) for the sources in the 7sigma-threshold catalog. The mean value is alpha=-0.6, which indicates that the catalog is dominated by sources emitting non-thermal radio emission. We identified the most common source types detected in radio surveys: 251 HII region candidates (113 new), 282 planetary nebulae (PNe) candidates (127 new), 784 radio star candidates (581 new), and 4080 extragalactic radio source candidates (2175 new). A significant fraction of HII regions and PNe candidates have alpha<-0.1 indicating that these candidates could contain radio jets, winds or outflows from high-mass and low-mass stellar objects. We identified 245 variable radio sources by comparing the flux densities of compact sources from the GLOSTAR survey and the Co-Ordinated Radio `N' Infrared Survey for High-mass star formation (CORNISH), and find that most of them are infrared quiet. The catalog is typically 95% complete for point sources at a flux density of 0.6 mJy (i.e. typical 7sigma level) and the systematic positional uncertainty is <= 0.1\". The GLOSTAR data and catalogs are available online at https://glostar.mpifr-bonn.mpg.de.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-10-15T08:46:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "glostar galactic plane survey",
      "star formation",
      "radio source catalog",
      "global view",
      "vla b-configuration"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 25,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}