The Components of Cepheid Systems: The FN Vel System*
Abstract Cepheid masses continue to be important tests of evolutionary tracks for intermediate-mass stars as well as important predictors of their future fate. For systems where the secondary is a B star, Hubble Space Telescope ultraviolet spectra have been obtained. From these spectra a temperature can be derived, and from this a mass of the companion M 2 . Once Gaia DR4 is available, proper motions can be used to determine the inclination of the orbit. Combining mass of the companion, M 2 , the mass function from the ground-based orbit of the Cepheid and the inclination produces the mass of the Cepheid, M 1 . The Cepheid system FN Vel is used here to demonstrate this approach and what limits can be put on the Cepheid mass for inclination between 50° and 130°.
Authors
- Charles Proffitt (ORCID: https://orcid.org/0000-0001-7617-5665)
- Richard I. Anderson (ORCID: https://orcid.org/0000-0001-8089-4419)
- Joanna Kuraszkiewicz (ORCID: https://orcid.org/0000-0001-5513-029X)
- Hans Moritz Günther (ORCID: https://orcid.org/0000-0003-4243-2840)
- Boris Trahin (ORCID: https://orcid.org/0000-0001-5875-5340)
- A. Mérand (ORCID: https://orcid.org/0000-0003-2125-0183)
- Nancy Remage Evans (ORCID: https://orcid.org/0000-0002-4374-075X)
- A. Gallenne (ORCID: https://orcid.org/0000-0001-7853-4094)
- P. Kervella (ORCID: https://orcid.org/0000-0003-0626-1749)
- Giordano Viviani (ORCID: https://orcid.org/0009-0001-6201-2897)
- Shreeya Shetye
Publication Details
- Journal
- The Astronomical Journal
- Published
- 2024-10-24
- DOI
- https://doi.org/10.3847/1538-3881/ad7fea
- Citations
- 3
- Primary Topic
- Stellar, planetary, and galactic studies
- Type
- article
- Field-Weighted Citation Impact
- 0.99
Funders
- National Aeronautics and Space Administration
- Space Telescope Science Institute
- European Space Agency
- European Commission
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Vlaamse regering
- Agencia Nacional de Investigación y Desarrollo
- European Research Council
- Astrophysics Division
- Fondo Nacional de Desarrollo Científico y Tecnológico
- HORIZON EUROPE European Research Council