Zobrazeno 1 - 10
of 3 999
pro vyhledávání: '"Chervin A"'
Autor:
Rix, Hans-Walter, Chandra, Vedant, Zasowski, Gail, Pillepich, Annalisa, Khoperskov, Sergey, Feltzing, Sofia, Wyse, Rosemary F., Frankel, Neige, Horta, Danny, Kollmeier, Juna, Stassun, Keivan G., Ness, Melissa, Bird, Jonathan C., Nidever, David L., Fernandez, Jose G., Amarante, João A., Laporte, Chervin F., Lian, Jianhui
We show with Gaia XP spectroscopy that extremely metal-rich stars in the Milky Way (EMR; $[M/H]_{XP} > 0.5$) - but only those - are largely confined to a tight "knot" at the center of the Galaxy. This EMR knot is round in projection, has a fairly abr
Externí odkaz:
http://arxiv.org/abs/2406.01706
Autor:
Chandra, Vedant, Naidu, Rohan P., Conroy, Charlie, Garavito-Camargo, Nicolas, Laporte, Chervin, Bonaca, Ana, Cargile, Phillip A., Cunningham, Emily, Han, Jiwon Jesse, Johnson, Benjamin D., Rix, Hans-Walter, Ting, Yuan-Sen, Woody, Turner, Zaritsky, Dennis
The infall of the Large Magellanic Cloud (LMC) is predicted to displace the inner Milky Way (MW), imprinting an apparent 'reflex motion' on the observed velocities of distant halo stars. We construct the largest all-sky spectroscopic dataset of lumin
Externí odkaz:
http://arxiv.org/abs/2406.01676
Several works have recently applied Jeans modelling to Gaia-based datasets to infer the circular velocity curve for the Milky Way. Such works have consistently found evidence for a continuous decline in the rotation curve beyond $\sim$15kpc possibly
Externí odkaz:
http://arxiv.org/abs/2405.19028
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
Publikováno v:
A&A 690, A166 (2024)
We use Legacy Survey photometric data to probe the stellar halo in multiple directions of the sky using a probabilistic methodology to identify Blue Horizontal Branch (BHB) stars. The measured average radial density profile follows a double power law
Externí odkaz:
http://arxiv.org/abs/2404.09825
Autor:
Debattista, Victor P., Khachaturyants, Tigran, Amarante, Joao A. S., Carr, Christopher, Silva, Leandro Beraldo e, Laporte, Chervin F. P.
We study azimuthal variations in the mean stellar metallicity, <[Fe/H]>, in a self-consistent, isolated simulation in which all stars form out of gas. We find <[Fe/H]> variations comparable to those observed in the Milky Way and which are coincident
Externí odkaz:
http://arxiv.org/abs/2402.08356
Autor:
Ji, Alexander P., Curtis, Sanjana, Storm, Nicholas, Chandra, Vedant, Schlaufman, Kevin C., Stassun, Keivan G., Heger, Alexander, Pignatari, Marco, Price-Whelan, Adrian M., Bergemann, Maria, Stringfellow, Guy S., Frohlich, Carla, Reggiani, Henrique, Holmbeck, Erika M., Tayar, Jamie, Shah, Shivani P., Griffith, Emily J., Laporte, Chervin F. P., Casey, Andrew R., Hawkins, Keith, Horta, Danny, Cerny, William, Thibodeaux, Pierre, Usman, Sam A., Amarante, Joao A. S., Beaton, Rachael L., Cargile, Phillip A., Chiappini, Cristina, Conroy, Charlie, Johnson, Jennifer A., Kollmeier, Juna A., Li, Haining, Loebman, Sarah, Meynet, Georges, Bizyaev, Dmitry, Brownstein, Joel R., Gupta, Pramod, Morrison, Sean, Pan, Kaike, Ramirez, Solange V., Rix, Hans-Walter, Sanchez-Gallego, Jose
Stars formed with initial mass over 50 Msun are very rare today, but they are thought to be more common in the early universe. The fates of those early, metal-poor, massive stars are highly uncertain. Most are expected to directly collapse to black h
Externí odkaz:
http://arxiv.org/abs/2401.02484
Autor:
Borbolato, Lais, Perottoni, Hélio D., Rossi, Silvia, Limberg, Guilherme, Pérez-Villegas, Angeles, Anders, Friedrich, Antoja, Teresa, Laporte, Chervin F. P., Rocha-Pinto, Helio J., Santucci, Rafael M.
We explore the kinematic and chemical properties of Monoceros stellar overdensity by combining data from 2MASS, WISE, APOGEE, and $\text{Gaia}$. Monoceros is a structure located towards the Galactic anticenter and close to the disk. We identified tha
Externí odkaz:
http://arxiv.org/abs/2309.15321
Autor:
Thomas, Guillaume F., Famaey, Benoit, Monari, Giacomo, Laporte, Chervin F. P., Ibata, Rodrigo, de Laverny, Patrick, Hill, Vanessa, Boily, Christian
Tidal streams of disrupted clusters are routinely detected in the halo of the Milky Way. It was recently shown that tidal streams of open clusters can now also be detected within the disc. In this work, we highlight the fact that tidal streams provid
Externí odkaz:
http://arxiv.org/abs/2309.05733
Publikováno v:
Disabilities, Vol 4, Iss 3, Pp 724-740 (2024)
Innovative initiatives emerge in line with the recommendations of the United Nations Convention on the Rights of Persons with Disabilities. They are often place-based, context-dependent, and are not easily adapted for use in other contexts. It raises
Externí odkaz:
https://doaj.org/article/cadbcb56f0e2498e8d579116d8bb9803
