Zobrazeno 1 - 10
of 721
pro vyhledávání: '"Carlos Allende"'
Autor:
Xiao-Jin Xie, Jianrong Shi, Hong-Liang Yan, Tian-Yi Chen, Carlos Allende Prieto, Timothy C. Beers, Shuai Liu, Chun-Qian Li, Ming-Yi Ding, Yao-Jia Tang, Ruizhi Zhang, Renjing Xie
Publikováno v:
The Astrophysical Journal Letters, Vol 970, Iss 2, p L30 (2024)
Highly r -process-enhanced (RPE) stars are rare and usually metal poor ([Fe/H] < −1.0), and they mainly populate the Milky Way halo and dwarf galaxies. This study presents the discovery of a relatively bright ( V = 12.72), highly RPE ( r -II) star
Externí odkaz:
https://doaj.org/article/9142c84e25a9493dbcf3460632d832fe
Autor:
Avrajit Bandyopadhyay, Rana Ezzeddine, Carlos Allende Prieto, Nima Aria, Shivani P. Shah, Timothy C. Beers, Anna Frebel, Terese T. Hansen, Erika M. Holmbeck, Vinicius M. Placco, Ian U. Roederer, Charli M. Sakari
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 274, Iss 2, p 39 (2024)
Understanding the abundance pattern of metal-poor stars and the production of heavy elements through various nucleosynthesis processes offers crucial insights into the chemical evolution of the Milky Way, revealing primary sites and major sources of
Externí odkaz:
https://doaj.org/article/9f18dccd1b74412c9634953d3a692cb4
Autor:
Byström, Amanda, Koposov, Sergey E., Lilleengen, Sophia, Li, Ting S., Bell, Eric, Silva, Leandro Beraldo e, Carrillo, Andreia, Chandra, Vedant, Gnedin, Oleg Y., Han, Jiwon Jesse, Medina, Gustavo E., Najita, Joan, Riley, Alexander H., Thomas, Guillaume, Valluri, Monica, Aguilar, Jessica N., Ahlen, Steven, Prieto, Carlos Allende, Brooks, David, Claybaugh, Todd, Cole, Shaun, Dawson, Kyle, de la Macorra, Axel, Font-Ribera, Andreu, Forero-Romero, Jaime E., Gaztañaga, Enrique, Gontcho, Satya Gontcho A, Kremin, Anthony, Lambert, Andrew, Landriau, Martin, Guillou, Laurent Le, Levi, Michael E., Meisner, Aaron, Miquel, Ramon, Moustakas, John, Prada, Francisco, Pérez-Ràfols, Ignasi, Rossi, Graziano, Sanchez, Eusebio, Schlegel, David, Schubnell, Michael, Sprayberry, David, Tarlé, Gregory, Weaver, Benjamin A., Zou, Hu
The Large Magellanic Cloud (LMC) is a Milky Way (MW) satellite that is massive enough to gravitationally attract the MW disc and inner halo, causing significant motion of the inner MW with respect to the outer halo. In this work, we probe this intera
Externí odkaz:
http://arxiv.org/abs/2410.09149
Autor:
Wanderley, Fábio, Cunha, Katia, Smith, Verne, Kochukhov, Oleg, Souto, Diogo, Prieto, Carlos Allende, Mahadevan, Suvrath, Majewski, Steven, Muirhead, Philip, Pinsonneault, Marc, Terrien, Ryan
Stellar magnetic fields have a major impact on space weather around exoplanets orbiting low-mass stars. From an analysis of Zeeman-broadened Fe I lines measured in near-infrared SDSS/APOGEE spectra, mean magnetic fields are determined for a sample of
Externí odkaz:
http://arxiv.org/abs/2409.06637
Stars play a decisive role in our Universe, from its beginning throughout its complete evolution. For a thorough understanding of their properties, evolution, and physics of their outer envelopes, stellar spectra need to be analyzed by comparison wit
Externí odkaz:
http://arxiv.org/abs/2409.03329
Autor:
Carlos Allende Prieto
Publikováno v:
Atoms, Vol 11, Iss 3, p 61 (2023)
Stellar atmospheres separate the hot and dense stellar interiors from the emptiness of space. Radiation escapes from the outermost layers of a star, carrying direct physical information. Underneath the atmosphere, the very high opacity keeps radiatio
Externí odkaz:
https://doaj.org/article/6ef99e9c878749bdb569666e2f1ff4ff
Autor:
Bandyopadhyay, Avrajit, Ezzeddine, Rana, Prieto, Carlos Allende, Aria, Nima, Shah, Shivani P., Beers, Timothy C., Frebel, Anna, Hansen, Terese T., Holmbeck, Erika M., Placco, Vinicius M., Roederer, Ian U., Sakari, Charli M.
Publikováno v:
The Astrophysical Journal Supplement , 2024, Volume 274, Number 2, Page 39
Understanding the abundance pattern of metal-poor stars and the production of heavy elements through various nucleosynthesis processes offers crucial insights into the chemical evolution of the Milky Way, revealing primary sites and major sources of
Externí odkaz:
http://arxiv.org/abs/2408.03731
Autor:
Xie, Xiao-Jin, Shi, Jianrong, Yan, Hong-Liang, Chen, Tian-Yi, Prieto, Carlos Allende, Beers, Timothy C., Liu, Shuai, Li, Chun-Qian, Ding, Ming-Yi, Tang, Yao-Jia, Zhang, Ruizhi, Xie, Renjing
Publikováno v:
ApJL, 2024, Volume 970, Number 2, L30
Highly r-process-enhanced stars are rare and usually metal-poor ([Fe/H] < - 1.0), and mainly populate the Milky Way halo and dwarf galaxies. This study presents the discovery of a relatively bright (V = 12.72), highly r-process-enhanced (r-II) star (
Externí odkaz:
http://arxiv.org/abs/2407.11572
Autor:
Mészáros, Szabolcs, Bohlin, Ralph, Prieto, Carlos Allende, Cseh, Borbála, Kovács, József, Fleming, Scott W., Dencs, Zoltán, Deustua, Susana, Gordon, Karl D., Hubeny, Ivan, Mező, György, Truszek, Márton
Context. The modeling of stellar spectra of flux standards observed by the Hubble and James Webb space telescopes requires a large synthetic spectral library that covers a wide atmospheric parameter range. Aims. The aim of this paper is to present an
Externí odkaz:
http://arxiv.org/abs/2407.10872
Autor:
Valluri, Monica, Fagrelius, Parker, Koposov, Sergey. E., Li, Ting S., Gnedin, Oleg Y., Bell, Eric F., Carlberg, Raymond G., Cooper, Andrew P., Aguilar, Jessia N., Prieto, Carlos Allende, Belokurov, Vasily, Silva, Leandro Beraldo e, Brooks, David, Byström, Amanda, Claybaugh, Todd, Dawson, Kyle, Dey, Arjun, Doel, Peter, Forero-Romero, Jaime E., Gaztañaga, Enrique, Gontcho, Satya Gontcho A, Honscheid, Klaus, Kisner, T ., Kremin, Anthony, Lambert, A., Landriau, Martin, Guillou, L. Le, Levi, Michael E., de la Macorra, Axel, Manera, Mark, Martini, Paul, Medina, Gustavo E., Meisner, Aaron, Miquel, Ramon, Moustakas, John, Myer, Adam D., Najita, Joan, Poppett, Claire, Prada, Francisco, Rezaie, Mehdi, Rossi, Graziano, Riley, Alex H., Sanchez, Eusebio, Schlegel, David, Schubnell, Michael, Sprayberry, David, Tarlé, Gregory, Thomas, Guillaume, Weaver, Benjamin A., Wechsler, Risa H., Zhou, Rongpu, Zou, Hu
We present ~ 126 new spectroscopically identified members of the GD-1 tidal stream obtained with the 5000-fiber Dark Energy Spectroscopic Instrument (DESI). We confirm the existence of a ``cocoon'' which is broad (FWHM~2.932deg~460pc) and kinematical
Externí odkaz:
http://arxiv.org/abs/2407.06336