Zobrazeno 1 - 10
of 741
pro vyhledávání: '"Aguirre V"'
Autor:
White T. R., Aguirre V. Silva, Boyajian T., Creevey O., Huber D., von Braun K., Bedding T. R., Elsworth Y., Hekker S., Stello D., Weiss A.
Publikováno v:
EPJ Web of Conferences, Vol 101, p 06068 (2015)
The asteroseismic scaling relations for the frequency of maximum oscillation power, vmax, and the large frequency separation, Δν, provide an easy way to directly determine the masses and radii of stars with detected solar-like oscillations. With th
Externí odkaz:
https://doaj.org/article/9bb129aa39034eb4942a1e8264133840
Publikováno v:
A&A 648, L5 (2021)
In the past, the cumulative metallicity distribution function (CMDF) turned out as a useful tool to constrain the accretion history of various components of the Milky Way. In this Letter, by means of analytical, leaky-box chemical evolution models (i
Externí odkaz:
http://arxiv.org/abs/2103.10965
Autor:
Spitoni, E., Verma, K., Aguirre, V. Silva, Vincenzo, F., Matteucci, F., Vaičekauskaitė, B., Palla, M., Grisoni, V., Calura, F.
Publikováno v:
A&A 647, A73 (2021)
The analysis of the APOGEE DR16 data suggests the existence of a clear distinction between two sequences of disc stars at different Galactocentric distances in the [$\alpha$/Fe] vs. [Fe/H] abundance ratio space: the so-called high-$\alpha$ sequence,
Externí odkaz:
http://arxiv.org/abs/2101.08803
Autor:
Pietrinferni, A., Hidalgo, S. L., Cassisi, S., Salaris, M., Savino, A., Mucciarelli, A., Verma, D., Aguirre, V. Silva, Aparicio, A., Ferguson, J.
This is the second paper of a series devoted to present an updated release of the BaSTI ( a Bag of Stellar Tracks and Isochrones) stellar model and isochrone library. Following the publication of the updated solar scaled library, here we present the
Externí odkaz:
http://arxiv.org/abs/2012.10085
Autor:
Nissen, P. E., Christensen-Dalsgaard, J., Mosumgaard, J. R., Aguirre, V. Silva, Spitoni, E., Verma., K.
Publikováno v:
A&A 640, A81 (2020)
HARPS spectra with signal-to-noise ratios S/N > 600 at 6000 A were analysed with MARCS model atmospheres to obtain 1D LTE abundances of C, O, Na, Mg, Al, Si, Ca, Ti, Cr, Fe, Ni, Sr, and Y for 72 nearby solar-type stars with metallicities in the range
Externí odkaz:
http://arxiv.org/abs/2006.06013
Publikováno v:
A&A 642, A113 (2020)
In their evolution, star-forming galaxies are known to follow scaling relations between some fundamental physical quantities, such as the mass-metallicity and the main sequence relations. We aim at studying the evolution of galaxies that, at a given
Externí odkaz:
http://arxiv.org/abs/2003.02347
Autor:
Christensen-Dalsgaard, J., Aguirre, V. Silva, Cassisi, S., Bertolami, M. Miller, Serenelli, A., Stello, D., Weiss, A., Angelou, G., Jiang, C., Lebreton, Y., Spada, F., Bellinger, E. P., Deheuvels, S., Ouazzani, R. M., Pietrinferni, A., Mosumgaard, J. R., Townsend, R. H. D., Battich, T., Bossini, D., Constantino, T., Eggenberger, P., Hekker, S., Mazumdar, A., Miglio, A., Nielsen, K. B., Salaris, M.
Context. The large quantity of high-quality asteroseismic data that obtained from space-based photometric missions and the accuracy of the resulting frequencies motivate a careful consideration of the accuracy of computed oscillation frequencies of s
Externí odkaz:
http://arxiv.org/abs/2002.02816
Autor:
Casagrande L., Baudin F., Mosser B., Valentini M., Noels A., Montalbán J., Girardi L., Chaplin W.J., Barbieri M., Morel T., Chiappini C., Miglio A., Fossati L., Aguirre V. Silva, Baglin A.
Publikováno v:
EPJ Web of Conferences, Vol 43, p 03004 (2013)
Solar-like oscillating giants observed by the space-borne satellites CoRoT and Kepler can be used as key tracers of stellar populations in the Milky Way. When combined with additional photometric/spectroscopic constraints, the pulsation spectra of so
Externí odkaz:
https://doaj.org/article/31a71e9054c14be0837cd7a26773e7ca
Autor:
Aguirre, V. Silva, Christensen-Dalsgaard, J., Cassisi, S., Bertolami, M. Miller, Serenelli, A. M., Stello, D., Weiss, A., Angelou, G., Jiang, C., Lebreton, Y., Spada, F., Bellinger, E. P., Deheuvels, S., Ouazzani, R. M., Pietrinferni, A., Mosumgaard, J. R., Townsend, R. H. D., Battich, T., Bossini, D., Constantino, T., Eggenberger, P., Hekker, S., Mazumdar, A., Miglio, A., Nielsen, K. B., Salaris, M.
Publikováno v:
A&A 635, A164 (2020)
(Abridged). We introduce the Aarhus Red Giants Challenge, a series of detailed comparisons between widely used stellar evolution and oscillation codes aiming at establishing the minimum level of uncertainties in properties of red giants arising solel
Externí odkaz:
http://arxiv.org/abs/1912.04909
Publikováno v:
A&A 635, A58 (2020)
With the wealth of information from large surveys and observational campaigns in the contemporary era, it is critical to properly exploit the data to constrain the parameters of Galactic chemical evolution models and quantify the associated uncertain
Externí odkaz:
http://arxiv.org/abs/1912.04312