{
  "id": "2107.04586",
  "version": "v1",
  "published": "2021-07-08T06:14:01.000Z",
  "updated": "2021-07-08T06:14:01.000Z",
  "title": "On the superhumps and mass ratio of CzeV404",
  "authors": [
    "Taichi Kato"
  ],
  "comment": "2 pages, to appear in VSOLJ Variable Star Bulletin",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "CzeV404 is an SU UMa-type dwarf nova in the period gap. Kara et al. (2021) (arXiv:2107.02664) recently published photometric and spectroscopic observations and obtained a mass ratio q=0.16, which is in severe disagreement of q~0.32 estimated from superhump observations (Bakowska et al., 2014). I here present what analysis was wrong or outdated in Bakowska et al. (2014) and provide a new value of q=0.247(5), consistent with the known behavior of superhumps and the evolution of cataclysmic variables. CzeV404 does not look like an unusual dwarf nova as suggested by Kara et al. (2021) and I discuss that the link between SW Sex and SU UMa systems suggested by Kara et al. (2021) is not supported.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-07-08T06:14:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "mass ratio",
      "su uma-type dwarf nova",
      "su uma systems",
      "unusual dwarf nova",
      "period gap"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 2,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}