{
  "id": "2106.08865",
  "version": "v1",
  "published": "2021-06-16T15:40:21.000Z",
  "updated": "2021-06-16T15:40:21.000Z",
  "title": "MONOS.II. Orbit review and analysis for 35 single-lined spectroscopic binary systems and candidates",
  "authors": [
    "E. Trigueros Páez",
    "R. H. Barbá",
    "I. Negueruela",
    "J. Maíz Apellániz",
    "S. Simón-Díaz",
    "G. Holgado"
  ],
  "comment": "Any feedback will be welcomed. Tables and Appendices will be available online",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "[ABRIDGED] AIMS: The MONOS project is collecting information and studying O-type spectroscopic binaries with delta > -20 deg. In this 2nd paper, we tackle the study of the 35 single-line spectroscopic binary (SB1) systems identified in the previous paper of the series (arXiv:1904.11385) by analyzing our data and reviewing the literature orbits of such systems. METHODS: We have measured the radial velocities for the ~700 spectra in our database using two different methods: Gaussian fitting for several diagnostic lines per object and cross-correlation using synthetic spectra. We also explored the TESS database and analyzed the light curves for 31 of the systems. RESULTS: We have confirmed 21 SB1 systems, discarded the binary nature of 6 stars (9 Sge, HD 192 281, HDE 229 232 AB, 68 Cyg, HD 108 and \\alpha Cam), and left 6 stars as inconclusive due to lack of data. The remaining two stars are 15 Mon Aa which has been classified as SB2, and Cyg OB2-22 C, for which we find evidence that it is most likely a triple system where the O star is orbiting an eclipsing SB1. We have also recalculated 20 new orbital solutions, including the first spectroscopic orbital solution for V747 Cep. For Cyg OB2-22 C we have obtained new ephemerides but no new orbit.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-06-16T15:40:21.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "single-lined spectroscopic binary systems",
      "orbit review",
      "first spectroscopic orbital solution",
      "candidates",
      "single-line spectroscopic binary"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}