Zobrazeno 1 - 10
of 29
pro vyhledávání: '"García-Hernández, Domingo Aníbal"'
Autor:
McCormick, Caroline, Majewski, Steven R., Smith, Verne V., Hayes, Christian R., Cunha, Katia, Masseron, Thomas, Weiss, Achim, Shetrone, Matthew, Almeida, Andrés, Frinchaboy, Peter M., García-Hernández, Domingo Aníbal, Nitschelm, Christian
Standard stellar evolution theory poorly predicts the surface abundances of chemical species in low-mass, red giant branch (RGB) stars. Observations show an enhancement of p-p chain and CNO cycle products in red giant envelopes, which suggests the ex
Externí odkaz:
http://arxiv.org/abs/2307.11191
Autor:
Hegedűs, Viola, Mészáros, Szabolcs, Jofré, Paula, Stringfellow, Guy S., Feuillet, Diane, García-Hernández, Domingo Aníbal, Nitschelm, Christian, Zamora, Olga
Publikováno v:
A&A 670, A107 (2023)
SDSS-IV APOGEE-2, GALAH and Gaia-ESO are high resolution, ground-based, multi-object spectroscopic surveys providing fundamental stellar atmospheric parameters and multiple elemental abundance ratios for hundreds of thousands of stars of the Milky Wa
Externí odkaz:
http://arxiv.org/abs/2211.03416
Autor:
Taylor, Dominic J., Mason, Andrew C., Schiavon, Ricardo P., Horta, Danny, Nataf, David M., Geisler, Doug, Kisku, Shobhit, Phillips, Siân G., Cohen, Roger E., Fernández-Trincado, José G., Beers, Timothy C., Bizyaev, Dmitry, García-Hernández, Domingo Aníbal, Lane, Richard R., Longa-Peña, Penélope, Minniti, Dante, Muñoz, Cesar, Pan, Kaike, Villanova, Sandro
It has been proposed that the globular cluster-like system Terzan 5 is the surviving remnant of a primordial building block of the Milky Way bulge, mainly due to the age/metallicity spread and the distribution of its stars in the $\alpha$-Fe plane. W
Externí odkaz:
http://arxiv.org/abs/2204.01753
Autor:
Kounkel, Marina, Covey, Kevin R., Stassun, Keivan G., Price-Whelan, Adrian M., Holtzman, Jon, Chojnowski, Drew, Longa-Peña, Penélope, Román-Zúñiga, Carlos G., Hernandez, Jesus, Serna, Javier, Badenes, Carles, De Lee, Nathan, Majewski, Steven, Stringfellow, Guy S., Kratter, Kaitlin M., Moe, Maxwell, Frinchaboy, Peter M., Beaton, Rachael L., Fernández-Trincado, José G., Mahadevan, Suvrath, Minniti, Dante, Beers, Timothy C., Schneider, Donald P., Barbá, Rodolfo H., Brownstein, Joel R., García-Hernández, Domingo Aníbal, Pan, Kaike, Bizyaev, Dmitry
APOGEE spectra offer $\lesssim$1 km s$^{-1}$ precision in the measurement of stellar radial velocities (RVs). This holds even when multiple stars are captured in the same spectrum, as happens most commonly with double-lined spectroscopic binaries (SB
Externí odkaz:
http://arxiv.org/abs/2107.10860
Autor:
Price-Whelan, Adrian M., Hogg, David W., Johnston, Kathryn V., Ness, Melissa K., Rix, Hans-Walter, Beaton, Rachael L., Brownstein, Joel R., García-Hernández, Domingo Aníbal, Hasselquist, Sten, Hayes, Christian R., Lane, Richard R., Zasowski, Gail
Publikováno v:
The Astrophysical Journal, Volume 910, Issue 1, id.17, 16 pp., 2021
Many approaches to galaxy dynamics assume that the gravitational potential is simple and the distribution function is time-invariant. Under these assumptions there are traditional tools for inferring potential parameters given observations of stellar
Externí odkaz:
http://arxiv.org/abs/2012.00015
Autor:
Cheng, Xinlun, Anguiano, Borja, Majewski, Steven R., Hayes, Christian, Arras, Phil, Chiappini, Cristina, Hasselquist, Sten, Queiroz, Anna Bárbara de Andrade, Nitschelm, Christian, Garcıa-Hernández, Domingo Anıbal, Lane, Richard R., Roman-Lopes, Alexandre, Frinchaboy, Peter
Previous analyses of large databases of Milky Way stars have revealed the stellar disk of our Galaxy to be warped and that this imparts a strong signature on the kinematics of stars beyond the solar neighborhood. However, due to the limitation of acc
Externí odkaz:
http://arxiv.org/abs/2010.10398
Autor:
Lian, Jianhui, Thomas, Daniel, Maraston, Claudia, Zamora, Olga, Tayar, Jamie, Pan, Kaike, Tissera, Patricia, Fernández-Trincado, José G., Garcia-Hernandez, Domingo Anibal
We investigate the age-chemical abundance structure of the outer Galactic disc at a galactocentric distance of r > 10 kpc as recently revealed by the SDSS/APOGEE survey. Two sequences are present in the [alpha/Fe]-[Fe/H] plane with systematically dif
Externí odkaz:
http://arxiv.org/abs/2003.11549
Autor:
Queiroz, Anna B. A., Anders, Friedrich, Santiago, Basílio X., Chiappini, Cristina, Steinmetz, Matthias, Ponte, Marina Dal, Stassun, Keivan G., da Costa, Luiz N., Maia, Marcio A. G., Beers, Timothy C., Crestani, Juliana, Fernández-Trincado, J. G., García-Hernández, Domingo Aníbal, Roman-Lopes, Alexandre, Zamora, Olga
Understanding the formation and evolution of our Galaxy requires accurate distances, ages and chemistry for large populations of field stars. Here we present several updates to our spectro-photometric distance code, that can now also be used to estim
Externí odkaz:
http://arxiv.org/abs/1710.09970
Autor:
Sakari, Charli M., Shetrone, Matthew D., Schiavon, Ricardo P., Bizyaev, Dmitry, Prieto, Carlos Allende, Beers, Timothy C., Caldwell, Nelson, Garcia-Hernandez, Domingo Anibal, Lucatello, Sara, Majewski, Steven, O'Connell, Robert W., Pan, Kaike, Strader, Jay
Chemical abundances are presented for 25 M31 globular clusters (GCs), based on moderately high resolution (R = 22, 500) H-band integrated light spectra from the Apache Point Observatory Galactic Evolution Experiment (APOGEE). Infrared spectra offer l
Externí odkaz:
http://arxiv.org/abs/1607.06811
Autor:
Fleming, Scott W., Mahadevan, Suvrath, Deshpande, Rohit, Bender, Chad F., Terrien, Ryan C., Marchwinski, Robert C., Wang, Ji, Roy, Arpita, Stassun, Keivan G., Prieto, Carlos Allende, Cunha, Katia, Smith, Verne V., Agol, Eric, Ak, Hasan, Bastien, Fabienne A., Bizyaev, Dmitry, Crepp, Justin R., Ford, Eric B., Frinchaboy, Peter M., García-Hernández, Domingo Aníbal, Pérez, Ana Elia García, Gaudi, B. Scott, Ge, Jian, Hearty, Fred, Ma, Bo, Majewski, Steve R., Mészáros, Szabolcs, Nidever, David L., Pan, Kaike, Pepper, Joshua, Pinsonneault, Marc H., Schiavon, Ricardo P., Schneider, Donald P., Wilson, John C., Zamora, Olga, Zasowski, Gail
The Kepler mission has yielded a large number of planet candidates from among the Kepler Objects of Interest (KOIs), but spectroscopic follow-up of these relatively faint stars is a serious bottleneck in confirming and characterizing these systems. W
Externí odkaz:
http://arxiv.org/abs/1502.05035