The post-common-envelope binary central star of the planetary nebula ETHOS 1
| Autor: | Miguel Santander-García, Pablo Rodríguez-Gil, David Jones, M. M. Rubio-Díez, Henri M. J. Boffin, Brent Miszalski, Romano L. M. Corradi, Jorge García-Rojas, J. Munday, Paulina Sowicka |
|---|---|
| Přispěvatelé: | Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737, National Science Centre, Poland (NCN), Agencia Estatal de Investigación (AEI), Munday, J. [0000-0002-1872-5398], Jones, D. [0000-0003-3947-5946], García Rojas, J. [0000-0002-6138-1869], Boffin, H. [0000-0002-9486-4840], Miszalski, B. [0000-0003-2561-6306], Swicka, P. [0000-0002-6605-0268], European Regional Development Fund (ERDF), Ministerio de Ciencia e Innovación (MICINN), Polish National Center for Science (NCN) |
| Rok vydání: | 2020 |
| Předmět: |
FOS: Physical sciences
Astrophysics Star (graph theory) 01 natural sciences Common envelope Emission nebula 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Binary system 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Solar and Stellar Astrophysics (astro-ph.SR) individual: PN PN G068.1+11.0 [Planetary nebulae] Physics Nebula 010308 nuclear & particles physics White dwarf Astronomy White dwarfs Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Planetary nebula Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) AGB and post AGB [Stars] Astrophysics::Earth and Planetary Astrophysics close [Binaries] Main sequence |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial Universidad de Alicante (UA) Instituto Nacional de Técnica Aeroespacial (INTA) |
| DOI: | 10.48550/arxiv.2009.03577 |
| Popis: | We present a detailed study of the binary central star of the planetary nebula ETHOS 1 (PN G068.1+11.0). Simultaneous modelling of light and radial velocity curves reveals the binary to comprise a hot and massive pre-white dwarf with an M-type main-sequence companion. A good fit to the observations was found with a companion that follows expected mass–temperature–radius relationships for low-mass stars, indicating that despite being highly irradiated, it is consistent with not being significantly hotter or larger than a typical star of the same mass. Previous modelling indicated that ETHOS 1 may comprise the first case where the orbital plane of the central binary does not lie perpendicular to the nebular symmetry axis, at odds with the expectation that the common envelope is ejected in the orbital plane. We find no evidence for such a discrepancy, deriving a binary inclination in agreement with that of the nebula as determined by spatio-kinematic modelling. This makes ETHOS 1 the ninth post-common-envelope planetary nebula in which the binary orbital and nebular symmetry axes have been shown to be aligned, with as yet no known counter-examples. The probability of finding such a correlation by chance is now less than 0.000 02 per cent. With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (MDM-2017-0737) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|