Zobrazeno 1 - 10
of 297
pro vyhledávání: '"Smith, V V"'
Autor:
Barbuy, B., Friaça, A. C. S., Ernandes, H., da Silva, P., Souza, S. O., Fernández-Trincado, J. G., Cunha, K., Smith, V. V., Masseron, T., Pérez-Villegas, A., Chiappini, C., Queiroz, A. B. A., Santiago, B. X., Beers, T. C., Anders, F., Schiavon, R. P., Valentini, M., Minniti, D., Geisler, D., Souto, D., Placco, V. M., Zoccali, M., Feltzing, S., Schultheis, M., Nitschelm, C.
Stars presently identified in the bulge spheroid are probably very old, and their abundances can be interpreted as due to the fast chemical enrichment of the early Galactic bulge. The abundances of the iron-peak elements are important tracers of nucl
Externí odkaz:
http://arxiv.org/abs/2410.13751
Autor:
Sales-Silva, J. V., Cunha, K., Smith, V. V., Daflon, S., Souto, D., Guerço, R., Queiroz, A., Chiappini, C., Hayes, C. R., Masseron, T., Hasselquist, Sten, Horta, D., Prantzos, N., Zoccali, M., Prieto, C. Allende, Barbuy, B., Beaton, R., Bizyaev, D., Fernández-Trincado, J. G., Frinchaboy, P. M., Holtzman, J. A., Johnson, J. A., Jönsson, Henrik, Majewski, S. R., Minniti, D., Nidever, D. L., Schiavon, R. P., Schultheis, M., Sobeck, J., Stringfellow, G. S., Zasowski, G.
This study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of $\sim$2000 stars in the Galactic Bulge/bar spatially contained within $|X_{Gal}|<$5 kpc, $|Y_{Gal}|<
Externí odkaz:
http://arxiv.org/abs/2402.14898
Autor:
Loaiza-Tacuri, V., Cunha, K., Souto, D., Smith, V. V., Guerço, R., Chiappini, C., Silva, J. V. Sales, Horta, D., Prieto, C. Allende, Beaton, R., Bizyaev, D., Daflon, S., Frinchaboy, P., Hasselquist, S., Hayes, C. R., Holtzman, J. A., Jönsson, H., Majewski, S. R., Mészáros, S., Nidever, D. L., Pinsonneault, M., Zasowski, G.
Previous results in the literature have found the young inner-disk open cluster NGC 6705 to be mildly $\alpha$-enhanced. We examined this possibility via an independent chemical abundance analysis for 11 red-giant members of NGC 6705. The analysis is
Externí odkaz:
http://arxiv.org/abs/2309.10778
Autor:
Razera, R., Barbuy, B., Moura, T. C., Ernandes, H., Pérez-Villegas, A., Souza, S. O., Chiappini, C., Queiroz, A. B. A., Anders, F., Fernández-Trincado, J. G., Friaça, A. C. S., Cunha, K., Smith, V. V., Santiago, B. X., Schiavon, R. P., Valentini, M., Minniti, D., Schultheis, M., Geisler, D., Sobeck, J., Placco, V. M, Zoccali, M.
The central part of the Galaxy host a multitude of stellar populations, including the spheroidal bulge stars, stars moved to the bulge through secular evolution of the bar, inner halo, inner thick disk, inner thin disk, as well as debris from past ac
Externí odkaz:
http://arxiv.org/abs/2208.06634
Autor:
Sales-Silva, J. V., Daflon, S., Cunha, K., Souto, D., Smith, V. V., Chiappini, C., Donor, J., Frinchaboy, P. M., García-Hernández, D. A., Hayes, C., Majewski, S. R., Masseron, T., Schiavon, R. P., Weinberg, D. H., Beaton, R. L., Fernández-Trincado, J. G., Jönsson, H., Lane, R. R., Minniti, D., Manchado, A., Bidin, C. Moni, Nitschelm, C., O'Connell, J., Villanova, S.
The APOGEE Open Cluster Chemical Abundances and Mapping (OCCAM) survey is used to probe the chemical evolution of the s-process element cerium in the Galactic disk. Cerium abundances were derived from measurements of Ce II lines in the APOGEE spectra
Externí odkaz:
http://arxiv.org/abs/2112.02196
Publikováno v:
Proceedings of the International Astronomical Union, IAU Symposium, Volume 332, pp. 237-241 (2018)
The element boron belongs, together with lithium and beryllium, to a known trio of important elements for the study of evolutionary processes in low mass stars. Because B is the least fragile of this trio to be destroyed in the stellar interiors, it
Externí odkaz:
http://arxiv.org/abs/1911.12856
Autor:
Charbonnel, C., Lagarde, N., Jasniewicz, G., North, P., Shetrone, M., Hollek, J. Krugler, Smith, V. V., Smiljanic, R., Palacios, A., Ottoni, G.
Publikováno v:
A&A 633, A34 (2020)
Lithium is extensively known to be a good tracer of non-standard mixing processes occurring in stellar interiors. We present the results of a new large Lithium survey in red giant stars and combine it with surveys from the literature to probe the imp
Externí odkaz:
http://arxiv.org/abs/1910.12732
Autor:
Anguiano, B., Majewski, S. R., Allende-Prieto, C., Meszaros, S., Jönsson, H., García-Hernández, D. A., Beaton, R. L., Stringfellow, G. S., Cunha, K., Smith, V. V.
Publikováno v:
A&A 620, A76 (2018)
We undertake a critical and comprehensive comparison of the radial velocities and the main stellar atmospheric parameters for stars in common between the latest data releases from the APOGEE and the LAMOST surveys. There is a total of 42,420 dwarfs/g
Externí odkaz:
http://arxiv.org/abs/1807.07625
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:
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