{
  "id": "2210.07581",
  "version": "v1",
  "published": "2022-10-14T07:18:27.000Z",
  "updated": "2022-10-14T07:18:27.000Z",
  "title": "Grantecan spectroscopic observations and confirmations of Planetary Nebulae candidates in the Northern Galactic Plane",
  "authors": [
    "A. Ritter",
    "Q. A. Parker",
    "L. Sabin",
    "P. Le Dû",
    "L. Mulato",
    "D. Patchick"
  ],
  "comment": "Accepted for publication by MNRAS",
  "categories": [
    "astro-ph.SR",
    "astro-ph.GA"
  ],
  "abstract": "We present Grantecan 10 m telescope (GTC) spectroscopic confirmations of 55 faint Planetary Nebulae (PNe) candidates discovered largely in the INT Photometric H$_\\alpha$ Survey of the Northern Galactic Plane (IPHAS) by our pro-am collaboration. We confirm 46 of them as 'True' (T), 4 as 'Likely' (L) and 5 as 'Possible' (P) PNe and including 5 new PNe central star (CSPN) discoveries. This was from observations of 62 new candidates yielding a maximum PN discovery success rate of 89%. The sensitivity and longer wavelength coverage of IPHAS allows PNe to be found in regions of greater extinction and at these lower Galactic latitudes, including PNe in a more advanced evolutionary state and at larger distances compared to previously known Galactic PNe. We use an holistic set of observed characteristics and optical emission-line diagnostics to confirm candidates. Plasma properties have been determined in a self-consistent way using PyNeb. This work is facilitated by the functionality of our powerful, multi-wavelength database 'HASH' (Hong Kong, Australian Astronomical Observatory, Strasbourg Observatory H-alpha Planetary Nebula catalogue) that federates known imaging, spectroscopy and other pertinent data for all Galactic T, L, P PNe and the significant numbers of mimics. Reddenings, corrected radial velocities and PNe electron density and temperature estimates are provided for these new PNe where possible.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-10-14T07:18:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "northern galactic plane",
      "planetary nebulae candidates",
      "grantecan spectroscopic observations",
      "observatory h-alpha planetary nebula",
      "h-alpha planetary nebula catalogue"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}