Zobrazeno 1 - 10
of 10 205
pro vyhledávání: '"Sneden AT"'
Autor:
D'Orazi, Valentina, Storm, Nicholas, Casey, Andrew R., Braga, Vittorio F., Zocchi, Alice, Bono, Giuseppe, Fabrizio, Michele, Sneden, Christopher, Massari, Davide, Giribaldi, Riano E., Bergemann, Maria, Campbell, Simon W., Casagrande, Luca, de Grijs, Richard, De Silva, Gayandhi, Lugaro, Maria, Zucker, Daniel B., Bragaglia, Angela, Feuillet, Diane, Fiorentino, Giuliana, Chaboyer, Brian, Dall'Ora, Massimo, Marengo, Massimo, Martínez-Vázquez, Clara E., Matsunaga, Noriyuki, Monelli, Matteo, Mullen, Joseph P., Nataf, David, Tantalo, Maria, Thevenin, Frederic, Vitello, Fabio R., Kudritzki, Rolf-Peter, Bland-Hawthorn, Joss, Buder, Sven, Freeman, Ken, Kos, Janez, Lewis, Geraint F., Lind, Karin, Martell, Sarah, Sharma, Sanjib, Stello, Dennis, Zwitter, Tomaž
Stellar mergers and accretion events have been crucial in shaping the evolution of the Milky Way (MW). These events have been dynamically identified and chemically characterised using red giants and main-sequence stars. RR Lyrae (RRL) variables can p
Externí odkaz:
http://arxiv.org/abs/2405.04580
Autor:
Xylakis-Dornbusch, T., Hansen, T. T., Beers, T. C., Christlieb, N., Ezzeddine, R., Frebel, A., Holmbeck, E., Placco, V. M., Roederer, I. U., Sakari, C. M., Sneden, C.
Context. In recent years, the R-Process Alliance (RPA) has conducted a successful search for stars enhanced in elements produced by the rapid neutron-capture (r-)process. In particular, the RPA has uncovered a number of stars strongly enriched in lig
Externí odkaz:
http://arxiv.org/abs/2404.03379
We have investigated the absorption shapes of atomic lines and H{\alpha} in RR Lyrae stars. We used the database of high resolution spectra gathered with the Las Campanas Observatory du Pont Telescope, analyzing a set of about 2700 short exposure spe
Externí odkaz:
http://arxiv.org/abs/2404.01420
Autor:
Nandakumar, Govind, Ryde, Nils, Mace, Gregory, Kaplan, Kyle F., Nieuwmunster, Niels, Jaffe, Daniel, Rich, R. Michael, Schultheis, Mathias, Agertz, Oscar, Andersson, Eric, Sneden, Christopher, Strickland, Emily, Thorsbro, Brian
We report the first high resolution, detailed abundances of 21 elements for giants in the Galactic bulge/bar within $1^\circ$ of the Galactic plane, where high extinction has rendered such studies challenging. Our high S/N and high-resolution, near-i
Externí odkaz:
http://arxiv.org/abs/2401.13991
Autor:
Brady, K. E., Sneden, C., Pilachowski, C. A., Afşar, Melike, Mace, G. N., Jaffe, D. T., Gosnell, N. M., Seifert, R.
Publikováno v:
AJ, 166, 154. 2023
We report on the first detailed infrared chemical analysis of five binary members (S277, S997, S975, S1031, and S1195) in the open cluster M67 (NGC 2682). These stars are located outside (bluer and/or brighter than) the main-sequence turnoff region i
Externí odkaz:
http://arxiv.org/abs/2309.16863
Autor:
Zhang, Zhoujian, Mollière, Paul, Hawkins, Keith, Manea, Catherine, Fortney, Jonathan J., Morley, Caroline V., Skemer, Andrew, Marley, Mark S., Bowler, Brendan P., Carter, Aarynn L., Franson, Kyle, Maas, Zachary G., Sneden, Christopher
AF Lep A+b is a remarkable planetary system hosting a gas-giant planet that has the lowest dynamical mass among directly imaged exoplanets. We present an in-depth analysis of the atmospheric composition of the star and planet to probe the planet's fo
Externí odkaz:
http://arxiv.org/abs/2309.02488
Autor:
da Silva, R., D'Orazi, V., Palla, M., Bono, G., Braga, V. F., Fabrizio, M., Lemasle, B., Spitoni, E., Matteucci, F., Jonsson, H., Kovtyukh, V., Magrini, L., Bergemann, M., Dall'Ora, M., Ferraro, I., Fiorentino, G., Francois, P., Iannicola, G., Inno, L., Kudritzki, R. -P., Matsunaga, N., Monelli, M., Nonino, M., Sneden, C., Storm, J., Thevenin, F., Tsujimoto, T., Zocchi, A.
Publikováno v:
A&A 678, A195 (2023)
Classical Cepheids (CCs) are solid distance indicators and tracers of young stellar populations. Our aim is to provide iron, oxygen, and sulfur abundances for the largest and most homogeneous sample of Galactic CCs ever analyzed. The current sample c
Externí odkaz:
http://arxiv.org/abs/2308.01928
Autor:
Pignatari, Marco, Trueman, Thomas C. L., Womack, Kate A., Gibson, Brad K., Côté, Benoit, Turrini, Diego, Sneden, Christopher, Mojzsis, Stephen J., Stancliffe, Richard J., Fong, Paul, Lawson, Thomas V., Keegans, James D., Pilkington, Kate, Passy, Jean-Claude, Beers, Timothy C., Lugaro, Maria
Theoretical physical-chemical models for the formation of planetary systems depend on data quality for the Sun's composition, that of stars in the solar neighbourhood, and of the estimated "pristine" compositions for stellar systems. The effective sc
Externí odkaz:
http://arxiv.org/abs/2307.12330
Autor:
Hanks, Patrick, Lenarčič, Simon
Publikováno v:
Dictionary of American Family Names, 2 ed., 2022.
Externí odkaz:
http://www.oxfordreference.com/view/10.1093/acref/9780190245115.001.0001/acref-9780190245115-e-69871
We have gathered optical-region spectra, derived model atmosphere parameters, and computed elemental abundances for 15 red giant stars in the open cluster NGC 7789. We focus on the light element group CNOLi that provides clues to evolutionary changes
Externí odkaz:
http://arxiv.org/abs/2304.07359