Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Pedicelli, S"'
Autor:
Lemasle, B., Groenewegen, M. A. T., Grebel, E. K., Bono, G., Fiorentino, G., François, P., Inno, L., Kovtyukh, V. V., Matsunaga, N., Pedicelli, S., Primas, F., Pritchard, J., Romaniello, M., da Silva, R.
Publikováno v:
A&A 608, A85 (2017)
Context: Cepheids are excellent tracers of young stellar populations. They play a crucial role in astrophysics as standard candles. The chemistry of classical Cepheids in the Milky Way is now quite well-known. Despite a much larger sample, the chemic
Externí odkaz:
http://arxiv.org/abs/1709.03083
Autor:
Genovali, K., Lemasle, B., Bono, G., Romaniello, M., Fabrizio, M., Ferraro, I., Iannicola, G., Laney, C. D., Nonino, M., Bergemann, M., Buonanno, R., Francois, P., Inno, L., Kudritzki, R. -P., Matsunaga, N., Pedicelli, S., Primas, F., Thevenin, F.
We present homogeneous and accurate iron abundances for 42 Galactic Cepheids based on high-spectral resolution (R~38,000) high signal-to-noise ratio (SNR>100) optical spectra collected with UVES at VLT (128 spectra). The above abundances were complem
Externí odkaz:
http://arxiv.org/abs/1403.6128
Autor:
Lemasle, B., Francois, P., Genovali, K., Kovtyukh, V. V., Bono, G., Inno, L., Laney, C. D., Kaper, L., Bergemann, M., Fabrizio, M., Matsunaga, N., Pedicelli, S., Primas, F., Romaniello, M.
Context: Galactic abundance gradients set strong constraints to chemo-dynamical evolutionary models of the Milky Way. Given the PL relations that provide accurate distances and the large number of spectral lines, Cepheids are excellent tracers of the
Externí odkaz:
http://arxiv.org/abs/1308.3249
Autor:
Genovali, K., Lemasle, B., Bono, G., Romaniello, M., Primas, F., Fabrizio, M., Buonanno, R., François, P., Inno, L., Laney, C. D., Matsunaga, N., Pedicelli, S., Thévenin, F.
Publikováno v:
Genovali et al. (2013), A&A, 554, 132
We present homogeneous and accurate iron abundances for almost four dozen (47) of Galactic Cepheids using high-spectral resolution (R$\sim$40,000) high signal-to-noise ratio (S/N $\ge$ 100) optical spectra collected with UVES at VLT. A significant fr
Externí odkaz:
http://arxiv.org/abs/1305.2742
Autor:
Causi, G. Li, Antoniucci, S., Bono, G., Pedicelli, S., Lorenzetti, D., Giannini, T., Nisini, B.
Optical-infrared interferometry can provide direct geometrical measurements of the radii of Cepheids and/or reveal unknown binary companions of these stars. Such information is of great importance for a proper calibration of Period-Luminosity relatio
Externí odkaz:
http://arxiv.org/abs/1211.4698
We present a new derivation of the CORS Baade-Wesselink method in the Walraven photometric system. We solved the complete Baade-Wesselink equation by calibrating the surface brightness function with a recent grid of atmosphere models. The new approac
Externí odkaz:
http://arxiv.org/abs/1012.4376
Autor:
Pedicelli, S., Lemasle, B., Groenewegen, M., Romaniello, M., Bono, G., Laney, C. D., Francois, P., Buonanno, R., Caputo, F., Lub, J., Pel, J. W., Primas, F., Pritchard, J.
We provided accurate estimates of distances, radii and iron abundances for four metal-rich Cepheids, namely V340 Ara, UZ Sct, AV Sgr and VY Sgr. The main aim of this investigation is to constrain their pulsation properties and their location across t
Externí odkaz:
http://arxiv.org/abs/1003.3854
Autor:
Romaniello, M., Primas, F., Mottini, M., Pedicelli, S., Lemasle, B., Bono, G., Francois, P., Groenewegen, M. A. T., Laney, C. D.
The dependency of the Cepheid Period-Luminosity Relation on chemical composition at different wavelengths is assessed via direct detailed abundance analysis of Galactic and Magellanic Cepheids, as derived from high resolution, high signal-to-noise sp
Externí odkaz:
http://arxiv.org/abs/0907.3655
Autor:
Pedicelli, S., Bono, G., Lemasle, B., Francois, P., Groenewegen, M., Lub, J., Pel, J. W., Laney, D., Piersimoni, A., Romaniello, M., Buonanno, R., Caputo, F., Cassisi, S., Castelli, F., Leurini, S., Pietrinferni, A., Primas, F., Pritchard, J.
Aims: The iron abundance gradient in the Galactic stellar disk provides fundamental constraints on the chemical evolution of this important Galaxy component. However the spread around the mean slope is, at fixed Galactocentric distance, larger than e
Externí odkaz:
http://arxiv.org/abs/0906.3140
Autor:
Lemasle, B., Francois, P., Piersimoni, A., Pedicelli, S., Bono, G., Laney, C. D., Primas, F., Romaniello, M.
Context: Classical Cepheids can be adopted to trace the chemical evolution of the Galactic disk since their distances can be estimated with very high accuracy. Aims: Homogeneous iron abundance measurements for 33 Galactic Cepheids located in the oute
Externí odkaz:
http://arxiv.org/abs/0810.0205