Zobrazeno 1 - 10
of 37
pro vyhledávání: '"V. F. Braga"'
Autor:
V. F. Braga, J. Crestani, M. Fabrizio, G. Bono, C. Sneden, G. W. Preston, J. Storm, S. Kamann, M. Latour, H. Lala, B. Lemasle, Z. Prudil, G. Altavilla, B. Chaboyer, M. Dall’Ora, I. Ferraro, C. K. Gilligan, G. Fiorentino, G. Iannicola, L. Inno, S. Kwak, M. Marengo, S. Marinoni, P. M. Marrese, C. E. Martínez-Vázquez, M. Monelli, J. P. Mullen, N. Matsunaga, J. Neeley, P. B. Stetson, E. Valenti, M. Zoccali
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 1, p 69 (2023)
Externí odkaz:
https://doaj.org/article/0c28fb08e81244bba836723ec0b8d23d
Autor:
V. F. Braga, J. Crestani, M. Fabrizio, G. Bono, C. Sneden, G. W. Preston, J. Storm, S. Kamann, M. Latour, H. Lala, B. Lemasle, Z. Prudil, G. Altavilla, B. Chaboyer, M. Dall’Ora, I. Ferraro, C. K. Gilligan, G. Fiorentino, G. Iannicola, L. Inno, S. Kwak, M. Marengo, S. Marinoni, P. M. Marrese, C. E. Martínez-Vázquez, M. Monelli, J. P. Mullen, N. Matsunaga, J. Neeley, P. B. Stetson, E. Valenti, M. Zoccali
Publikováno v:
The Astrophysical Journal, Vol 919, Iss 2, p 85 (2021)
We collected the largest spectroscopic catalog of RR Lyrae (RRLs) including ≈20,000 high-, medium-, and low-resolution spectra for ≈10,000 RRLs. We provide the analytical forms of radial velocity curve (RVC) templates. These were built using 36 R
Externí odkaz:
https://doaj.org/article/bddd061a9ae74f6b8a1a2b3d68860a0e
Publikováno v:
Acta Polytechnica CTU Proceedings, Vol 2, Iss 1, Pp 192-196 (2015)
In this paper we present the elementary assumptions of our research on the role of the magnetic field in modelling the quiescence-outbursts cycle in Cataclysmic Variables (CVs). The behaviour of the magnetic field is crucial not only to integrate the
Externí odkaz:
https://doaj.org/article/d55f17b475d84f74a3e92eb8d1ebf8b8
Autor:
C. F. Resende, V. F. Braga, P. F. Pereira, C. J. Silva, V. F. Vale, R. E. Bianchetti, R. C. Forzza, C. Ribeiro, P. H. P. Peixoto
Publikováno v:
Brazilian Journal of Biology, Vol 76, Iss 1, Pp 218-227
Abstract This study aimed to evaluate the variation in the levels of proline, oxidative metabolism and photosynthetic pigments in plants of Pitcairnia encholirioides grown in vitro under different conditions and after acclimatization. The analyses we
Externí odkaz:
https://doaj.org/article/477f413c032a49dcacf3200b8b373766
Autor:
Z. Prudil, A. J. Koch-Hansen, B. Lemasle, E. K. Grebel, T. Marchetti, C. J. Hansen, J. Crestani, V. F. Braga, G. Bono, B. Chaboyer, M. Fabrizio, M. Dall’Ora, C. E. Martínez-Vázquez
We report the discovery of high-velocity candidates among RR Lyrae stars found in the Milky Way halo. We identified nine RR Lyrae stars with Galactocentric velocities exceeding the local escape velocity based on the assumed Galaxy potential. Furtherm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef8623e80777bd7deb86750abb824569
https://hdl.handle.net/2108/316406
https://hdl.handle.net/2108/316406
Autor:
F. Nikzat, C. E. Ferreira Lopes, M. Catelan, R. Contreras Ramos, M. Zoccali, A. Rojas-Arriagada, V. F. Braga, D. Minniti, J. Borissova, I. Becker
Context. Long-period variable stars (LPVs) are pulsating red giants, primarily in the asymptotic giant branch phase, and they include both Miras and semi-regular variables (SRVs). Their period-age and period-luminosity relations enable us to trace di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1eafc69e4b0ecc07adccd7af1ff33007
http://arxiv.org/abs/2203.06162
http://arxiv.org/abs/2203.06162
Autor:
Alan Alves-Brito, J. P. Mullen, H. Lala, Jesper Storm, P. M. Marrese, Peter B. Stetson, Massimo Dall'Ora, J. Neeley, M. Marengo, Manuela Zoccali, Brian Chaboyer, J. Crestani, A. J. Koch-Hansen, C. E. Martínez-Vázquez, Mario Nonino, F. Thévenin, Noriyuki Matsunaga, M. Monelli, M. Fabrizio, V. F. Braga, Maurizio Salaris, Bertrand Lemasle, Christopher Sneden, Elena Valenti, R. da Silva, S. Marinoni, Z. Prudil, G. Altavilla, I. Ferraro, Giuliana Fiorentino, Giuseppe Bono, George W. Preston, G. Iannicola, C. K. Gilligan, Eva K. Grebel, Valentina D'Orazi
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2021, 914 (1), pp.10. ⟨10.3847/1538-4357/abfa23⟩
The Astrophysical Journal, American Astronomical Society, 2021, 914 (1), pp.10. ⟨10.3847/1538-4357/abfa23⟩
We provide the largest and most homogeneous sample of $\alpha$-element (Mg, Ca, Ti) and iron abundances for field RR Lyrae (RRLs, 162 variables) by using high-resolution spectra. The current measurements were complemented with similar abundances avai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1025e051de8aced2bc1bfa43c49d707
https://hal.archives-ouvertes.fr/hal-03375259
https://hal.archives-ouvertes.fr/hal-03375259
Autor:
J. Neeley, C. E. Martínez-Vázquez, J. Crestani, Brian Chaboyer, Massimo Dall'Ora, M. Fabrizio, Giuliana Fiorentino, Massimo Marengo, Frédéric Thévenin, C. K. Gilligan, Giuseppe Bono, J. P. Mullen, Christopher Sneden, M. Monelli, V. F. Braga
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 503 (4), pp.4719-4733. ⟨10.1093/mnras/stab857⟩
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 503 (4), pp.4719-4733. ⟨10.1093/mnras/stab857⟩
Accurate metallicities of RR Lyrae are extremely important in constraining period-luminosity-metallicity relationships (PLZ), particularly in the near-infrared. We analyse 69 high-resolution spectra of Galactic RR Lyrae stars from the Southern Africa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03474d9b2cc5bb077c17f7352a90ff78
https://hal.archives-ouvertes.fr/hal-03375224
https://hal.archives-ouvertes.fr/hal-03375224
Autor:
I. Ferraro, Laura Inno, P. B. Stetson, H. Lala, G. Iannicola, G. Altavilla, V. F. Braga, Christopher Sneden, M. Zoccali, Giuseppe Bono, George W. Preston, J. Crestani, Noriyuki Matsunaga, S. Marinoni, M. Fabrizio, C. K. Gilligan, Brian Chaboyer, Giuliana Fiorentino, J. Neeley, J. P. Mullen, M. Marengo, R. da Silva, Eva K. Grebel, Valentina D'Orazi, Jesper Storm, Z. Prudil, Elena Valenti, A. R. Walker, F. Thévenin, Mario Nonino, C. E. Martínez-Vázquez, Alan Alves-Brito, Massimo Dall'Ora, B. Lemasle, M. Monelli, P. M. Marrese
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2021, 908 (1), pp.20. ⟨10.3847/1538-4357/abd183⟩
The Astrophysical Journal, American Astronomical Society, 2021, 908 (1), pp.20. ⟨10.3847/1538-4357/abd183⟩
We performed the largest and most homogeneous spectroscopic survey of field RR Lyraes (RRLs). We secured $\approx$6,300 high resolution (HR, R$\sim$35,000) spectra for 143 RRLs (111 fundamental, RRab; 32 first overtone, RRc). The atmospheric paramete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86f39ac48861b5a5e65d8c9aab33a66f
http://hdl.handle.net/2108/301068
http://hdl.handle.net/2108/301068
Autor:
C. E. Martínez-Vázquez, P. M. Marrese, M. Fabrizio, Sebastian Kamann, M. Latour, P. B. Stetson, Giuseppe Bono, G. Altavilla, I. Ferraro, Massimo Dall'Ora, J. Crestani, C. K. Gilligan, Noriyuki Matsunaga, Giuliana Fiorentino, H. Lala, B. Lemasle, M. Zoccali, Brian Chaboyer, M. Monelli, J. Neeley, S. Kwak, Z. Prudil, J. P. Mullen, Jesper Storm, V. F. Braga, G. Iannicola, M. Marengo, Christopher Sneden, George W. Preston, S. Marinoni, Laura Inno, Elena Valenti
We collected the largest spectroscopic catalog of RR Lyrae (RRLs) including $\approx$20,000 high-, medium- and low-resolution spectra for $\approx$10,000 RRLs. We provide the analytical forms of radial velocity curve (RVC) templates. These were built
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::348968c6968a24879c04c47c4d6ca295
http://hdl.handle.net/11367/106221
http://hdl.handle.net/11367/106221