Zobrazeno 1 - 10
of 261
pro vyhledávání: '"Zasowski G."'
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:
Poovelil, Vijith Jacob, Zasowski, G., Hasselquist, S., Seth, A., Donor, John, Beaton, Rachael L., Cunha, K., Frinchaboy, Peter M., García-Hernández, D. A., Hawkins, K., Kratter, K. M., Lane, Richard R., Nitschelm, C.
The chemical homogeneity of surviving stellar clusters contains important clues about interstellar medium (ISM) mixing efficiency, star formation, and the enrichment history of the Galaxy. Existing measurements in a handful of open clusters suggest h
Externí odkaz:
http://arxiv.org/abs/2009.06777
Autor:
Rojas-Arriagada, A., Zasowski, G., Schultheis, M., Zoccali, M., Hasselquist, S., Chiappini, C., Cohen, R. E., Cunha, K., Fernández-Trincado, J. G., Fragkoudi, F., García-Hernández, D. A., Geisler, D., Lian, J., Majewski, S., Minniti, D., Nitschelm, C., Queiroz, A. B. A.
We use data of $\sim$13,000 stars from the SDSS/APOGEE survey to study the shape of the bulge MDF within the region $|\ell|\leq11^\circ$ and $|b|\leq13^\circ$, and spatially constrained to ${\rm R_{GC}\leq3.5}$ kpc. We apply Gaussian Mixture Modeling
Externí odkaz:
http://arxiv.org/abs/2007.13967
Autor:
Queiroz, A. B. A., Chiappini, C., Perez-Villegas, A., Khalatyan, A., Anders, F., Barbuy, B., Santiago, B. X., Steinmetz, M., Cunha, K., Schultheis, M., Majewski, S. R., Minchev, I., Minniti, D., Beaton, R. L., Cohen, R. E., da Costa, L. N., Fernández-Trincado, J. G., Garcia-Hernández, D. A., Geisler, D., Hasselquist, S., Lane, R. R., Nitschelm, C., Rojas-Arriagada, A., Roman-Lopes, A., Smith, V., Zasowski, G.
Publikováno v:
A&A 656, A156 (2021)
We investigate the inner regions of the Milky Way with a sample of unprecedented size and coverage thanks to APOGEE DR16 and Gaia EDR3 data. Our inner Galactic sample has more than 26,000 stars within $|X_{\rm Gal}| <5$ kpc, $|Y_{\rm Gal}| <3.5$ kpc,
Externí odkaz:
http://arxiv.org/abs/2007.12915
Publikováno v:
EPJ Web of Conferences, Vol 19, p 06006 (2012)
Due to the very strong interstellar extinction in the inner Galaxy, the stellar complexities of this region have only recently begun to be explored, with many infrared surveys now taking advantage of the reduced extinction at longer wavelengths to st
Externí odkaz:
https://doaj.org/article/4c56eece42214d298e298d0d0c510ef0
Autor:
Rojas-Arriagada, A., Zoccali, M., Schultheis, M., Recio-Blanco, A., Zasowski, G., Minniti, D., Jönsson, H., Cohen, R. E.
The Galactic bulge has a bimodal metallicity distribution function: different kinematic, spatial, and, potentially, age distributions characterize the metal-poor and metal-rich components. Despite this observed dichotomy, which argues for different f
Externí odkaz:
http://arxiv.org/abs/1905.01364
Autor:
Zasowski, G., Finkbeiner, D. P., Green, G. M., Kollmeier, J. A., Nataf, D. M., Peek, J. E. G., Schlafly, E. F., Aguirre, V. Silva, Speagle, J. S., Tchernyshyov, K., Trujillo, J. D., Zucker, C.
Galactic interstellar dust has a profound impact not only on our observations of objects throughout the Universe, but also on the morphology, star formation, and chemical evolution of the Galaxy. The advent of massive imaging and spectroscopic survey
Externí odkaz:
http://arxiv.org/abs/1903.05150
Autor:
Zasowski, G., Schultheis, M., Hasselquist, S., Cunha, K., Sobeck, J., Johnson, J. A., Rojas-Arriagada, A., Majewski, S. R., Andrews, B. H., Jonsson, H., Beers, T. C., Chojnowski, S. D., Frinchaboy, P. M., Holtzman, J. A., Minniti, D., Nidever, D. L., Nitschelm, C.
We present an overview of the distributions of 11 elemental abundances in the Milky Way's inner regions, as traced by APOGEE stars released as part of SDSS Data Release 14/15 (DR14/DR15), including O, Mg, Si, Ca, Cr, Mn, Co, Ni, Na, Al, and K. This s
Externí odkaz:
http://arxiv.org/abs/1811.01097
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