Zobrazeno 1 - 10
of 6 248
pro vyhledávání: '"Casey, A. R."'
Autor:
Das, Pradosh Barun, Zucker, Daniel B., De Silva, Gayandhi M., Borsato, Nicholas W., Mura-Guzmán, Aldo, Buder, Sven, Ness, Melissa, Nordlander, Thomas, Casey, Andrew R., Martell, Sarah L., Bland-Hawthorn, Joss, de Grijs, Richard, Freeman, Ken C., Kos, Janez, Stello, Dennis, Lewis, Geraint F., Hayden, Michael R., Sharma, Sanjib
Analysing stellar parameters and abundances from nearly one million Gaia DR3 Radial Velocity Spectrometer (RVS) spectra poses challenges due to the limited spectral coverage (restricted to the infrared Ca II triplet) and variable signal-to-noise rati
Externí odkaz:
http://arxiv.org/abs/2410.12272
Autor:
Saydjari, Andrew K., Finkbeiner, Douglas P., Wheeler, Adam J., Holtzman, Jon A., Wilson, John C., Casey, Andrew R., Sánchez-Maes, Sophia, Brownstein, Joel R., Hogg, David W., Blanton, Michael R.
The radial velocity catalog from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) is unique in its simultaneously large volume and high precision as a result of its decade-long survey duration, multiplexing (600 fibers), and spectr
Externí odkaz:
http://arxiv.org/abs/2408.07126
Autor:
Kemp, Alex J., Karakas, Amanda I., Casey, Andrew R., Cote, Benoit, Izzard, Robert G., Osborn, Zara
Context. The explosive burning that drives nova eruptions results in unique nucleosynthesis that heavily over-produces certain isotopes relative to the solar abundance. However, novae are often ignored when considering the chemical evolution of our G
Externí odkaz:
http://arxiv.org/abs/2407.18718
Publikováno v:
MNRAS 531(4), 2024, 4538-4544
Spectral synthesis codes are essential for inferring stellar parameters and detailed chemical abundances. These codes require many physical inputs to predict an emergent spectrum. Developers adopt the best measurements of those inputs at the time the
Externí odkaz:
http://arxiv.org/abs/2407.01861
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:
Castro-Ginard, Alfred, Penoyre, Zephyr, Casey, Andrew R., Brown, Anthony G. A., Belokurov, Vasily, Cantat-Gaudin, Tristan, Drimmel, Ronald, Fouesneau, Morgan, Khanna, Shourya, Kurbatov, Evgeny P., Price-Whelan, Adrian M., Rix, Hans-Walter, Smart, Richard L.
Publikováno v:
A&A 688, A1 (2024)
Gaia can not individually resolve very close binary systems, however, the collected data can still be used to identify them. A powerful indicator of stellar multiplicity is the sources reported Renormalized Unit Weight Error (ruwe), which effectively
Externí odkaz:
http://arxiv.org/abs/2404.14127
Autor:
Hogg, David W., Casey, Andrew R.
When there are many observations of an astronomical source - many images with different dithers, or many spectra taken at different barycentric velocities - it is standard practice to shift and stack the data, to (for example) make a high signal-to-n
Externí odkaz:
http://arxiv.org/abs/2403.11011
Autor:
Rains, Adam D., Nordlander, Thomas, Monty, Stephanie, Casey, Andrew R., Rojas-Ayala, Bárbara, Žerjal, Maruša, Ireland, Michael J., Casagrande, Luca, McKenzie, Madeleine
Detailed chemical studies of F/G/K -- or Solar-type -- stars have long been routine in stellar astrophysics, enabling studies in both Galactic chemodynamics, and exoplanet demographics. However, similar understanding of the chemistry of M and late-K
Externí odkaz:
http://arxiv.org/abs/2402.14639
Autor:
Worley, C. C., Smiljanic, R., Magrini, L., Frasca, A., Franciosini, E., Montes, D., Feuillet, D. K., Tabernero, H. M., Hernández, J. I. González, Villanova, S., Mikolaitis, Š., Lind, K., Tautvaišienė, G., Casey, A. R., Korn, A. J., Bonifacio, P., Soubiran, C., Caffau, E., Guiglion, G., Merle, T., Hourihane, A., Gonneau, A., François, P., Randich, S., Gilmore, G., Lewis, J. R., Murphy, D. N. A., Jeffries, R. D., Koposov, S. E., Blomme, R., Lanzafame, A. C., Bensby, T., Bragaglia, A., Alfaro, E. J., Walton, N. A., Vallenari, A., Prusti, T., Biazzo, K., Jofré, P., Zaggia, S., Heiter, U., Marfil, E., Jiménez-Esteban, F., Albarrán, M. L. Gutiérrez, Morbidelli, L.
The Gaia-ESO Survey is an European Southern Observatory (ESO) public spectroscopic survey that targeted $10^5$ stars in the Milky Way covering the major populations of the disk, bulge and halo. The observations were made using FLAMES on the VLT obtai
Externí odkaz:
http://arxiv.org/abs/2402.06076
Autor:
Cantat-Gaudin, Tristan, Fouesneau, Morgan, Rix, Hans-Walter, Brown, Anthony G. A., Drimmel, Ronald, Castro-Ginard, Alfred, Khanna, Shourya, Belokurov, Vasily, Casey, Andrew R.
The spatial distribution of Galactic stars with different chemical abundances encodes information on the processes that drove the formation and evolution of the Milky Way. Survey selection functions are indispensable for analysing astronomical catalo
Externí odkaz:
http://arxiv.org/abs/2401.05023