Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Hasselquist, S"'
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:
Schultheis, M., Rojas-Arriagada, A., Cunha, K., Zoccali, M., Chiappini, C., Queiroz, A. B. A., Minniti, D., Fritz, T., García-Hernández, D. A., Nitschelm, C., Zamora, O., Hasselquist, S., Fernández-Trincado, J. G., Munoz, R. R.
Publikováno v:
A&A 642, A81 (2020)
The Galactic Center region, including the nuclear disk, has until recently been largely avoided in chemical census studies because of extreme extinction and stellar crowding. Making use of the latest APOGEE data release (DR16), we are able for the fi
Externí odkaz:
http://arxiv.org/abs/2008.13687
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
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
Autor:
Zasowski, G., Johnson, Jennifer A., Frinchaboy, P. M., Majewski, S. R., Nidever, D. L., Pinto, H. J. Rocha, Girardi, L., Andrews, B., Chojnowski, S. D., Cudworth, K. M., Jackson, K., Munn, J., Skrutskie, M. F., Beaton, R. L., Blake, C. H., Covey, K., Deshpande, R., Epstein, C., Fabbian, D., Fleming, S. W., Hernandez, A. Garcia, Herrero, A., Mahadevan, S., Meszaros, Sz., Schultheis, M., Sellgren, K., Terrien, R., van Saders, J., Prieto, C. Allende, Bizyaev, D., Burton, A., Cunha, K., da Costa, L. N., Hasselquist, S., Hearty, F., Holtzman, J., Perez, A. E. Garcia, Maia, M. A. G., O'Connell, R. W., O'Donnell, C., Pinsonneault, M., Santiago, B. X., Schiavon, R. P., Shetrone, M., Smith, V., Wilson, J. C.
The Apache Point Observatory Galactic Evolution Experiment (APOGEE) is a high-resolution infrared spectroscopic survey spanning all Galactic environments (i.e., bulge, disk, and halo), with the principal goal of constraining dynamical and chemical ev
Externí odkaz:
http://arxiv.org/abs/1308.0351
Autor:
Loaiza-Tacuri, V, Cunha, K, Souto, D, Smith, V V, Guerço, R, Chiappini, C, Sales-Silva, J V, 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
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Dec2023, Vol. 526 Issue 2, p2378-2393, 16p
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