Conferencia de Pepa Martínez sobre ordenadores cuánticos, miércoles 16 de marzo
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Etiqueta: CEFCA
Charla de Carlos López Sanjuan: La evolución espectral de enanas blancas con J-PLUS
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Dr. Carlos López Sanjuan is a researcher at CEFCA (Centro de Estudios de Física del Cosmos de Aragón).
Abstract: White dwarfs are the degenerate compact remnants of stars with masses below 8 Msun. They do not have an internal source of energy and just cool down with time. In addition, they show a diversity of atmospheric compositions in their spectra, with sources presenting hydrogen (H) lines (DA type), helium (He) lines (DO and DB type), metal lines (DZ type), and featureless spectra (DC type) among others. In this seminar we present our recent work about the spectral evolution of white dwarfs with effective temperature (i.e., their age) using the Javalambre Photometric Local Universe Survey (J-PLUS). We analysed 5926 white dwarfs with r <= 19.5 mag in common between the white dwarf catalogue presented in Gentile Fusillo et al. 2021, defined from Gaia EDR3, and J-PLUS DR2. We estimated their effective temperature (Teff), surface gravity, parallax, and spectral type; and the probability of having a H-dominated atmosphere (p_H) for each source. Our analysis yields a 21 +- 3% increase in the fraction of He-dominated white dwarfs from Teff = 20000 K to Teff = 5000 K.
Horario: 12:00, del jueves 10 de marzo, en el seminario de Física Nuclear. On-line
Exposición en Teruel: los últimos 11.000 millones de años del Universo a partir de fotos del observatorio de Javalambre
Noticia en el periódico «Heraldo de Aragón»
La exposición ‘Abre los ojos’, que muestra imágenes del firmamento captadas por uno de los telescopios del observatorio del Pico del Buitre, en Javalambre, se puede ver en el edificio del Banco de España de Teruel.
En su inauguración, el director general de Universidades ha comunicado la impartición el próximo curso 21-22 del Máster de Física del Universo promovido por CAPA. Desde la DGA están trabajando en el convenio que establece los términos de la colaboración entre las distintas instituciones para poder realizar prácticas en el CEFCA o en el Laboratorio Subterráneo de Canfranc.
Six tenure track positions of Researcher in Astrophysics and Cosmology at CEFCA
The «Centro de Estudios de Física del Cosmos de Aragón» (CEFCA) invites applications for six tenure track positions of Researcher in Astrophysics and Cosmology. The positions are initially for five years, that will turn into a permanent Researcher Staff position after a positive evaluation before the end of the contract.
Successful candidates will join the Research Division at CEFCA to have a leading role in the scientific exploitation of the present and future OAJ surveys, like e.g. J-PAS and J-PLUS. The six positions aim to cover a wide range of fields in Astrophysical topics, like moving objects of the Solar System, atmospheric parameters and variability of Milky Way stars, star formation and stellar populations of spatially resolved and distant galaxies, Supernovae detection and characterization, clusters of galaxies, the environment of galaxies, supermassive black holes, etc.
The call will be permanently open until the six offered positions are awarded. The first deadline for submitting applications is Oct 15th at 23:59:59h CEST. More information can be found at the call webpage: https://www.cefca.es/cefca_en/reference_0078
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