Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Meszaros, Sz."'
Autor:
Dencs, Z., Derekas, A., Mitnyan, T., Andersen, M. F., Cseh, B., Grundahl, F., Hegedűs, V., Kovács, J., Kriskovics, L., Palle, P. L., Pál, A., Szigeti, L., Mészáros, Sz.
Understanding the atmospheric parameters of stars on the top of the RGB is essential to reveal the chemical composition of the Milky Way, as they can be used to probe the farthest parts of our Galaxy. Our goal is to determine the chemical composition
Externí odkaz:
http://arxiv.org/abs/2404.13176
Autor:
Masseron, T., Osorio, Y., García-Hernández, D. A., Prieto, C. Allende, Zamora, O., Mészáros, Sz.
Publikováno v:
A&A 647, A24 (2021)
Hydrodynamical (or 3D) and non-local thermodynamic equilibrium (NLTE) effects are known to affect abundance analyses. However, there are very few observational abundance testsof 3D and NLTE models. We developed a new way of testing the abundance pred
Externí odkaz:
http://arxiv.org/abs/2101.11643
Autor:
Derekas, A., Murphy, S. J., Dalya, G., Szabo, R., Borkovits, T., Bokon, A., Lehmann, H., Kinemuchi, K., Southworth, J., Bloemen, S., Csak, B., Isaacson, H., Kovacs, J., Shporer, A., Szabo, Gy. M., Thygesen, A. O., Meszaros, Sz.
We started a program to search for companions around hybrid $\delta$ Sct/$\gamma$ Dor stars with the frequency modulation method using Kepler data. Our best candidate was KIC 5709664, where we could identify Fourier peaks with sidelobes, suggesting b
Externí odkaz:
http://arxiv.org/abs/1904.03490
Autor:
Masseron, T., García-Hernández, D. A., Mészáros, Sz., Zamora, O., Dell'Agli, F., Prieto, C. Allende, Edvardsson, B., Shetrone, M., Plez, B., Fernández-Trincado, J. G., Cunha, K., Jönsson, H., Geisler, D., Beers, T. C., Cohen, R. E.
Publikováno v:
A&A 622, A191 (2019)
We analyze a large sample of 885 GCs giants from the APOGEE survey. We used the Cannon results to separate the red giant branch and the asymptotic giant branch stars, not only allowing for a refinement of surface gravity from isochrones, but also pro
Externí odkaz:
http://arxiv.org/abs/1812.08817
Autor:
Schiappacasse-Ulloa, J., Tang, B., Fernández-Trincado, J. G., Zamora, O., Geisler, D., Frinchaboy, P., Schultheis, M., Dell'Agli, F., Villanova, S., Masseron, T., Mészáros, Sz., Souto, D., Hasselquist, S., Cunha, K., Smith, V. V., García-Hernández, D. A., Vieira, K., Robin, A. C., Minniti, D., Zasowski, G., Moreno, E., Pérez-Villegas, A., Lane, R. R., Ivans, I. I., Pan, K., Nitschelm, C., Santana, F. A., Carrera, R., Roman-Lopes, A.
IC 166 is an intermediate-age open cluster ($\sim 1$ Gyr) which lies in the transition zone of the metallicity gradient in the outer disc. Its location, combined with our very limited knowledge of its salient features, make it an interesting object o
Externí odkaz:
http://arxiv.org/abs/1806.09575
Autor:
Fernández-Trincado, José G., Zamora, O., Souto, Diogo, Cohen, R. E., Dell'Agli, F., García-Hernández, D. A., Masseron, T., Schiavon, R. P., Mészáros, Sz., Cunha, K., Hasselquist, Sten, Shetrone, M., Ulloa, J. Schiappacasse, Tang, B., Geisler, D., Schleicher, D. R. G., Villanova, S., Mennickent, R. E., Minniti, D., Alonso-Garcia, J., Manchado, A., Beers, T. C., Sobeck, J., Zasowski, G., Schultheis, M., Majewski, S. R., Rojas-Arriagada, A., Almeida, A., Santana, F., Oelkers, R. J., Longa-Peña, P., Carrera, R., Burgasser, A. J., Lane, R. R., Roman-Lopes, A., Ivans, Inese I., Hearty, F. R.
We present elemental abundance analysis of high-resolution spectra for five giant stars, deriving Fe, Mg, Al, C, N, O, Si and Ce abundances, and spatially located within the innermost regions of the bulge globular cluster NGC 6522, based on H-band sp
Externí odkaz:
http://arxiv.org/abs/1801.07136
Autor:
Zasowski, G., Cohen, R. E., Chojnowski, S. D., Santana, F., Oelkers, R. J., Andrews, B., Beaton, R. L., Bender, C., Bird, J. C., Bovy, J., Carlberg, J. K., Covey, K., Cunha, K., Dell'Agli, F., Fleming, S. W., Frinchaboy, P. M., Garcia-Hernandez, D. A., Harding, P., Holtzman, J., Johnson, J. A., Kollmeier, J. A., Majewski, S. R., Meszaros, Sz., Munn, J., Munoz, R. R., Ness, M. K., Nidever, D. L., Poleski, R., Zuniga, C. Roman, Shetrone, M., Simon, J. D., Smith, V. V., Sobeck, J. S., Stringfellow, G. S., Szigetiaros, L., Tayar, J., Troup, N.
APOGEE-2 is a high-resolution, near-infrared spectroscopic survey observing roughly 300,000 stars across the entire sky. It is the successor to APOGEE and is part of the Sloan Digital Sky Survey IV (SDSS-IV). APOGEE-2 is expanding upon APOGEE's goals
Externí odkaz:
http://arxiv.org/abs/1708.00155
Autor:
Fernández-Trincado, J. G., Zamora, O., Garcia-Hernandez, D. A., Souto, Diogo, Dell'Agli, F., Schiavon, R. P., Geisler, D., Tang, B., Villanova, S., Hasselquist, Sten, Mennickent, R. E., Cunha, Katia, Shetrone, M., Prieto, Carlos Allende, Vieira, K., Zasowski, G., Sobeck, J., Hayes, C. R., Majewski, S. R., Placco, V. M., Beers, T. C., Schleicher, D. R. G., Robin, A. C., Meszaros, Sz., Masseron, T., Perez, Ana E. Garcia, Anders, F., Meza, A., Alves-Brito, A., Carrera, R., Minniti, D., Lane, R. R., Fernandez-Alvar, E., Moreno, E., Pichardo, B., Perez-Villegas, A., Schultheis, M., Roman-Lopes, A., Fuentes, C. E., Nitschelm, C., Harding, P., Bizyaev, D., Pan, K., Oravetz, D., Simmons, A., Ivans, Inese I., Blanco-Cuaresma, S., Hernandez, J., Alonso-Garcia, J., Valenzuela, O., Chaname, J.
We report the peculiar chemical abundance patterns of eleven atypical Milky Way (MW) field red giant stars observed by the Apache Point Observatory Galactic Evolution Experiment (APOGEE). These atypical giants exhibit strong Al and N enhancements acc
Externí odkaz:
http://arxiv.org/abs/1707.03108
Autor:
Ventura, P., García--Hernández, D. A., Dell'Agli, F., D'Antona, F., Meszaros, Sz., Lucatello, S., Di Criscienzo, M., Shetrone, M., Tailo, M., Tang, Baitian, Zamora, O.
We study the formation of multiple populations in globular clusters (GC), under the hypothesis that stars in the second generation formed from the winds of intermediate-mass stars, ejected during the asymptotic giant branch (AGB) phase, possibly dilu
Externí odkaz:
http://arxiv.org/abs/1610.03243
Galactic Archaeology with asteroseismology and spectroscopy: Red giants observed by CoRoT and APOGEE
Autor:
Anders, F., Chiappini, C., Rodrigues, T. S., Miglio, A., Montalbán, J., Mosser, B., Girardi, L., Valentini, M., Noels, A., Morel, T., Johnson, J. A., Schultheis, M., Baudin, F., Peralta, R. de Assis, Hekker, S., Themeßl, N., Kallinger, T., García, R. A., Mathur, S., Baglin, A., Santiago, B. X., Martig, M., Minchev, I., Steinmetz, M., da Costa, L. N., Maia, M. A. G., Prieto, C. Allende, Cunha, K., Beers, T. C., Epstein, C., Pérez, A. E. García, García-Hernández, D. A., Harding, P., Holtzman, J., Majewski, S. R., Mészáros, Sz., Nidever, D., Pan, K., Pinsonneault, M., Schiavon, R. P., Schneider, D. P., Shetrone, M. D., Stassun, K., Zamora, O., Zasowski, G.
Publikováno v:
A&A 597, A30 (2017)
With the advent of the space missions CoRoT and Kepler, it has become feasible to determine precise asteroseismic masses and ages for large samples of red-giant stars. In this paper, we present the CoRoGEE dataset -- obtained from CoRoT lightcurves f
Externí odkaz:
http://arxiv.org/abs/1604.07763