Mostrar el registro sencillo del ítem
The sdA problem : II. Photometric and spectroscopic follow-up
dc.contributor.author | Pelisoli, Ingrid Domingos | pt_BR |
dc.contributor.author | Kepler, Souza Oliveira | pt_BR |
dc.contributor.author | Koester, Detlev | pt_BR |
dc.contributor.author | Castanheira, Bárbara Garcia | pt_BR |
dc.contributor.author | Romero, Alejandra Daniela | pt_BR |
dc.contributor.author | Fraga, Luciano | pt_BR |
dc.date.accessioned | 2018-09-26T02:33:37Z | pt_BR |
dc.date.issued | 2018 | pt_BR |
dc.identifier.issn | 0035-8711 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/182665 | pt_BR |
dc.description.abstract | The spectral classification ‘subdwarfA’ (sdA) is given to stars showingH-rich spectra and submain- sequence surface gravities, but effective temperature lower than the zero-age horizontal branch. Their evolutionary origin is an enigma. In this work, we discuss the results of followup observations of selected sdAs. We obtained time-resolved spectroscopy for 24 objects and time-series photometry for another 19 objects. For two targets, we report both spectroscopy and photometry observations. We confirm seven objects to be new extremely low-mass white dwarfs (ELMs), one of which is a known eclipsing star.We also find the eighth member of the pulsating ELM class. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Monthly notices of the royal astronomical society. Oxford. Vol. 478, no. 1 (July 2018), p. 867–884 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Anãs brancas | pt_BR |
dc.subject | Subdwarfs | en |
dc.subject | Binaries: general | en |
dc.subject | Evolucao estelar | pt_BR |
dc.subject | Estrelas binarias | pt_BR |
dc.subject | Stars: evolution | en |
dc.subject | White dwarfs | en |
dc.title | The sdA problem : II. Photometric and spectroscopic follow-up | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001074986 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
Ficheros en el ítem
Este ítem está licenciado en la Creative Commons License
![](/themes/Mirage2Novo//images/lume/cc.png)
-
Artículos de Periódicos (39401)Ciencias Exactas y Naturales (5976)