Zobrazeno 1 - 10
of 5 134
pro vyhledávání: '"Price-Whelan A"'
Autor:
Nidever, David L., Price-Whelan, Adrian M., Choi, Yumi, Beaton, Rachael L., Hansen, Terese T., Boubert, Douglas, Aguado, David, Ezzeddine, Rana, Oh, Semyeong, Evans, N. Wyn
We report spectroscopic measurements of stars in the recently discovered young stellar association Price-Whelan 1 (PW 1), which was found in the vicinity of the Leading Arm (LA) of the Magellanic Stream. We obtained Magellan+MIKE high-resolution spec
Externí odkaz:
http://arxiv.org/abs/1910.05360
We present radial velocities for five member stars of the recently discovered young (age= 100-150 Myr) stellar system Price-Whelan 1 (PW 1), that is located far away in the Galactic Halo (D~ 29 kpc, Z~ 15 kpc), and that is probably associated to the
Externí odkaz:
http://arxiv.org/abs/1910.04899
Autor:
Lu, Yuxi, Colman, Isabel L., Sayeed, Maryum, Amard, Louis, Buder, Sven, Manea, Catherine, Hattori, Soichiro, Pinsonneault, Marc H., Price-Whelan, Adrian M., Bedell, Megan, Nidever, David, Johnson, Jennifer A., Ness, Melissa, Angus, Ruth, Claytor, Zachary R., Horta, Danny, Behmard, Aida
The existence of high-$\alpha$ stars with inferred ages < 6 Gyr has been confirmed recently with large spectroscopic and photometric surveys. However, stellar mergers or binary interactions can induce properties associated with young ages, such as hi
Externí odkaz:
http://arxiv.org/abs/2410.02962
Autor:
Brooks, Richard A. N., Garavito-Camargo, Nicolás, Johnston, Kathryn V., Price-Whelan, Adrian M., Sanders, Jason L., Lilleengen, Sophia
The infall of the LMC into the Milky Way (MW) has dynamical implications throughout the MW's dark matter halo. We study the impact of this merger on the statistical properties of populations of simulated stellar streams. Specifically, we investigate
Externí odkaz:
http://arxiv.org/abs/2410.02574
We present cogsworth, an open-source Python tool for producing self-consistent population synthesis and galactic dynamics simulations. With cogsworth one can (1) sample a population of binaries and star formation history, (2) perform rapid (binary) s
Externí odkaz:
http://arxiv.org/abs/2409.04543
Autor:
Foote, Hayden R., Besla, Gurtina, Garavito-Camargo, Nicolás, Patel, Ekta, Thomas, Guillaume F., Bonaca, Ana, Price-Whelan, Adrian M., Peter, Annika H. G., Zaritsky, Dennis, Conroy, Charlie
Stellar streams in the Milky Way are promising detectors of low-mass dark matter (DM) subhalos predicted by $\Lambda$CDM. Passing subhalos induce perturbations in streams that indicate the presence of the subhalos. Understanding how known DM-dominate
Externí odkaz:
http://arxiv.org/abs/2408.06415
Autor:
Foster, Steve, Schiavon, Ricardo P., de Castro, Denise B., Lucatello, Sara, Daher, Christine, Penoyre, Zephyr, Price-Whelan, Adrian, Badenes, Carles, Fernández-Trincado, JJ. G., García-Hernández, D. A., Holtzman, Jon, Jönsson, Henrik, Shetrone, Matthew
Carbon abundances in first-ascent giant stars are usually lower than those of their main-sequence counterparts. At moderate metallicities, stellar evolution of single stars cannot account for the existence of red-giant branch stars with enhanced carb
Externí odkaz:
http://arxiv.org/abs/2407.18130
Galaxies are not in a dynamical steady state. They continually undergo perturbations, e.g., from infalling dwarf galaxies and dark-matter substructure. After a dynamical perturbation, stars phase mix towards a new steady state; in so doing they gener
Externí odkaz:
http://arxiv.org/abs/2407.07149
Autor:
Bonaca, Ana, Price-Whelan, Adrian M.
The hierarchical model of galaxy formation predicts that the Milky Way halo is populated by tidal debris of dwarf galaxies and globular clusters. Due to long dynamical times, debris from the lowest mass objects remains coherent as thin and dynamicall
Externí odkaz:
http://arxiv.org/abs/2405.19410
Autor:
Hackshaw, Zoe, Hawkins, Keith, Filion, Carrie, Horta, Danny, Laporte, Chervin F. P., Carr, Chris, Price-Whelan, Adrian M.
Chemical cartography of the Galactic disk provides insights to its structure and assembly history over cosmic time. In this work, we use chemical cartography to explore chemical gradients and azimuthal substructure in the Milky Way disk with giant st
Externí odkaz:
http://arxiv.org/abs/2405.18120