---
res:
  bibo_abstract:
  - 'We present volume-limited samples of cataclysmic variables (CVs) and AM CVn binaries
    jointly selected from SRG/eROSITA eRASS1 and Gaia DR3 using an X-ray + optical
    color–color diagram (the "X-ray Main Sequence"). This tool identifies all CV subtypes,
    including magnetic and low-accretion rate systems, in contrast to most previous
    surveys. We find 23 CVs, 3 of which are AM CVns, out to 150 pc in the Western
    Galactic Hemisphere. Our 150 pc sample is spectroscopically verified and complete
    down to LX = 1.3 × 1029 erg s−1 in the 0.2–2.3 keV band, and we also present CV
    candidates out to 300 pc and 1000 pc. We discovered two previously unknown systems
    in our 150 pc sample: the third nearest AM CVn and a magnetic period bouncer.
    We find the mean LX of CVs to be 〈LX〉 ≈ 4.6 × 1030 erg s−1, in contrast to previous
    surveys which yielded 〈LX〉 ∼ 1031−1032 erg s−1. We construct X-ray luminosity
    functions that, for the first time, flatten out at LX ∼ 1030 erg s−1. We infer
    average number, mass, and luminosity densities of ρN,CV = (3.7 ± 0.7) × 10−6pc−3,
    (math formular), and (math formular), respectively, in the solar neighborhood.
    Our uniform selection method also allows us to place meaningful estimates on the
    space density of AM CVns, ρN,AM CVn = (5.5 ± 3.7) × 10−7 pc−3. Magnetic CVs and
    period bouncers make up 35% and 25% of our sample, respectively. This work, through
    a novel discovery technique, shows that the observed number densities of CVs and
    AM CVns, as well as the fraction of period bouncers, are still in tension with
    population synthesis estimates.@eng'
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Antonio C.
      foaf_name: Rodriguez, Antonio C.
      foaf_surname: Rodriguez
  - foaf_Person:
      foaf_givenName: Kareem
      foaf_name: El-Badry, Kareem
      foaf_surname: El-Badry
  - foaf_Person:
      foaf_givenName: Valery
      foaf_name: Suleimanov, Valery
      foaf_surname: Suleimanov
  - foaf_Person:
      foaf_givenName: Anna F.
      foaf_name: Pala, Anna F.
      foaf_surname: Pala
  - foaf_Person:
      foaf_givenName: Shrinivas R.
      foaf_name: Kulkarni, Shrinivas R.
      foaf_surname: Kulkarni
  - foaf_Person:
      foaf_givenName: Boris
      foaf_name: Gaensicke, Boris
      foaf_surname: Gaensicke
  - foaf_Person:
      foaf_givenName: Kaya
      foaf_name: Mori, Kaya
      foaf_surname: Mori
  - foaf_Person:
      foaf_givenName: R. Michael
      foaf_name: Rich, R. Michael
      foaf_surname: Rich
  - foaf_Person:
      foaf_givenName: Arnab
      foaf_name: Sarkar, Arnab
      foaf_surname: Sarkar
  - foaf_Person:
      foaf_givenName: Tong
      foaf_name: Bao, Tong
      foaf_surname: Bao
  - foaf_Person:
      foaf_givenName: Raimundo Lopes
      foaf_name: De Oliveira, Raimundo Lopes
      foaf_surname: De Oliveira
  - foaf_Person:
      foaf_givenName: Gavin
      foaf_name: Ramsay, Gavin
      foaf_surname: Ramsay
  - foaf_Person:
      foaf_givenName: Paula
      foaf_name: Szkody, Paula
      foaf_surname: Szkody
  - foaf_Person:
      foaf_givenName: Matthew
      foaf_name: Graham, Matthew
      foaf_surname: Graham
  - foaf_Person:
      foaf_givenName: Thomas A.
      foaf_name: Prince, Thomas A.
      foaf_surname: Prince
  - foaf_Person:
      foaf_givenName: Ilaria
      foaf_name: Caiazzo, Ilaria
      foaf_surname: Caiazzo
      foaf_workInfoHomepage: http://www.librecat.org/personId=8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
    orcid: 0000-0002-4770-5388
  - foaf_Person:
      foaf_givenName: Zachary P.
      foaf_name: Vanderbosch, Zachary P.
      foaf_surname: Vanderbosch
  - foaf_Person:
      foaf_givenName: Jan Van
      foaf_name: Roestel, Jan Van
      foaf_surname: Roestel
  - foaf_Person:
      foaf_givenName: Kaustav K.
      foaf_name: Das, Kaustav K.
      foaf_surname: Das
  - foaf_Person:
      foaf_givenName: Yu Jing
      foaf_name: Qin, Yu Jing
      foaf_surname: Qin
  - foaf_Person:
      foaf_givenName: Mansi M.
      foaf_name: Kasliwal, Mansi M.
      foaf_surname: Kasliwal
  - foaf_Person:
      foaf_givenName: Avery
      foaf_name: Wold, Avery
      foaf_surname: Wold
  - foaf_Person:
      foaf_givenName: Steven L.
      foaf_name: Groom, Steven L.
      foaf_surname: Groom
  - foaf_Person:
      foaf_givenName: Daniel
      foaf_name: Reiley, Daniel
      foaf_surname: Reiley
  - foaf_Person:
      foaf_givenName: Reed
      foaf_name: Riddle, Reed
      foaf_surname: Riddle
  bibo_doi: 10.1088/1538-3873/ada185
  bibo_issue: '1'
  bibo_volume: 137
  dct_date: 2025^xs_gYear
  dct_identifier:
  - UT:001393204700001
  dct_isPartOf:
  - http://id.crossref.org/issn/0004-6280
  dct_language: eng
  dct_publisher: IOP Publishing@
  dct_title: 'Cataclysmic variables and AM CVn binaries in SRG/eROSITA + Gaia: Volume
    limited samples, X-ray luminosity functions, and space densities@'
...