Zobrazeno 1 - 10
of 361
pro vyhledávání: '"Zúñiga, Carlos"'
Autor:
Zamora-Aviles, Manuel, Camacho, Vianey, Ballesteros-Paredes, Javier, Vázquez-Semadeni, Enrique, Palau, Aina, Román-Zúñiga, Carlos, Hernández-Cruz, Andrés, Gómez, Gilberto C., Quesada-Zúñiga, Fabián, Naranjo-Romero, Raúl
We explore the Schmidt-Kennicutt (SK) relations and the star formation efficiency per free-fall time ($\eff$), mirroring observational studies, in numerical simulations of filamentary molecular clouds undergoing gravitational contraction. We find tha
Externí odkaz:
http://arxiv.org/abs/2409.11588
Autor:
Sánchez-Sanjuán, Sergio, Hernández, Jesús, Pérez-Villegas, Ángeles, Román-Zúñiga, Carlos, Aguilar, Luis, Ballesteros-Paredes, Javier, Bonilla-Barroso, Andrea
In this work, we analysed young stellar clusters with spatial and kinematic coherence in the Orion star-forming complex. For this study, we selected a sample of pre-main sequence candidates using parallaxes, proper motions and positions on the colour
Externí odkaz:
http://arxiv.org/abs/2409.09206
Autor:
Ballesteros-Paredes, Javier, Zamora-Avilés, Manuel, Román-Zúñiga, Carlos, Palau, Aina, Cervantes-Sodi, Bernardo, Gutiérrez-Dávila, Karla, Camacho, Vianey, Jiménez-Andrade, Eric, Gazol, Adriana
We explain the large variety of star formation laws in terms of one single, simple law that can be inferred from the definition of the star formation rate and basic algebra. The resulting equation, $\SFR = \eff\ \Mcollapsing/\tauff$, although it has
Externí odkaz:
http://arxiv.org/abs/2408.13636
Autor:
López-Valdivia, Ricardo, Adame, Lucía, Lagunas, Eduardo Zagala, Román-Zúñiga, Carlos G., Hernández, Jesús, Sánchez, Edilberto, Fernández-Trincado, José G., Carigi, Leticia, Kounkel, Marina, Lane, Richard R., Stassun, Keivan G., Villanova, Sandro
To date, we have access to enormous inventories of stellar spectra that allow the extraction of atmospheric parameters and chemical abundances essential in stellar studies. However, characterizing such a large amount of data is complex and requires a
Externí odkaz:
http://arxiv.org/abs/2407.17640
Autor:
Serna, Javier, Pinzón, Giovanni, Hernández, Jesús, Manzo-Martínez, Ezequiel, Mauco, Karina, Román-Zúñiga, Carlos G., Calvet, Nuria, Briceño, Cesar, López-Valdivia, Ricardo, Kounkel, Marina, Stringfellow, Guy S., Stassun, Keivan G., Pinsonneault, Marc, Adame, Lucia, Cao, Lyra, Covey, Kevin, Bayo, Amelia, Roman-Lopes, Alexandre, Nitschelm, Christian, Lane, Richard R.
We developed a grid of stellar rotation models for low-mass and solar-type Classical T Tauri stars (CTTS) ($0.3M_{\odot}
Externí odkaz:
http://arxiv.org/abs/2403.07505
Autor:
Saad, Serat, Lane, Kaitlyn, Kounkel, Marina, Stassun, Keivan G., López-Valdivia, Ricardo, Kim, Jinyoung Serena, Ramírez, Karla Peña, Stringfellow, Guy S., Román-Zúñiga, Carlos G., Hernández, Jesús, Wolk, Scott J., Hillenbrand, Lynne A.
We developed a tool that measures equivalent widths of various lines in low resolution optical spectra, and it was applied to stellar spectra obtained as part of SDSS-V and LAMOST programs. These lines, such as Li I which directly indicates stellar y
Externí odkaz:
http://arxiv.org/abs/2401.01932
Autor:
Kounkel, Marina, Zari, Eleonora, Covey, Kevin, Tkachenko, Andrew, Zúñiga, Carlos Román, Stassun, Keivan, Stutz, Amelia M., Stringfellow, Guy, Roman-Lopes, Alexandre, Hernández, Jesús, Ramírez, Karla Peña, Bayo, Amelia, Kim, Jinyoung Serena, Cao, Lyra, Wolk, Scott J., Kollmeier, Juna, López-Valdivia, Ricardo, Rojas-Ayala, Bárbara
The fifth iteration of the Sloan Digital Sky Survey (SDSS-V) is set to obtain optical and near-infrared spectra of $\sim$5 million stars of all ages and masses throughout the Milky Way. As a part of these efforts, APOGEE & BOSS Young Star Survey (ABY
Externí odkaz:
http://arxiv.org/abs/2301.07186
Autor:
Román-Zúñiga, Carlos G., Kounkel, Marina, Hernández, Jesús, Ramírez, Karla Peña, López-Valdivia, Ricardo, Covey, Kevin R., Stutz, Amelia M., Román-López, Alexandre, Campbell, Hunter, Khilfeh, Eliott, Tapia, Mauricio, Stringfellow, Guy S., Downes, Juan José, Stassun, Keivan G., Minniti, Dante, Bayo, Amelia, Kim, Jinyoung Serena, Suárez, Genaro, Ybarra, Jason, Fernández-Trincado, José G., Longa-Peña, Penélope, Ramírez-Preciado, Valeria, Serna, Javier, Lane, Richard R., García-Hernández, D. A., Beaton, Rachael L., Bizyaev, Dmitry, Pan, Kaike
The Sloan Digital Sky Survey IV (SDSS-IV) APOGEE-2 primary science goal was to observe red giant stars throughout the Galaxy to study its dynamics, morphology, and chemical evolution. The APOGEE instrument, a high-resolution 300 fiber H-band (1.55-1.
Externí odkaz:
http://arxiv.org/abs/2211.09217
Autor:
Campbell, Hunter, Khilfeh, Elliott, Covey, Kevin R., Kounkel, Marina, Ballantyne, Richard, Corey, Sabrina, Román-Zúñiga, Carlos G., Hernández, Jesús, Martínez, Ezequiel Manzo, Ramírez, Karla Peña, Roman-Lopes, Alexandre, Stassun, Keivan G., Stringfellow, Guy S., Borissova, Jura, Chojnowski, S. Drew, Ramírez-Preciado, Valeria, Kim, Jinyoung Serena, Serna, Javier, Stutz, Amelia M., López-Valdivia, Ricardo, Suárez, Genaro, Ybarra, Jason E., Longa-Peña, Penélope, Fernández-Trincado, José G.
Very young (t $\lesssim$ 10 Myrs) stars possess strong magnetic fields that channel ionized gas from the interiors of their circumstellar discs to the surface of the star. Upon impacting the stellar surface, the shocked gas recombines and emits hydro
Externí odkaz:
http://arxiv.org/abs/2211.06454
Autor:
Straumit, Ilya, Tkachenko, Andrew, Gebruers, Sarah, Audenaert, Jeroen, Xiang, Maosheng, Zari, Eleonora, Aerts, Conny, Johnson, Jennifer A., Kollmeier, Juna A., Rix, Hans-Walter, Beaton, Rachael L., Van Saders, Jennifer L., Teske, Johanna, Roman-Lopes, Alexandre, Ting, Yuan-Sen, Román-Zúñiga, Carlos G.
The Sloan Digital Sky Survey has recently initiated its 5th survey generation (SDSS-V), with a central focus on stellar spectroscopy. In particular, SDSS-V Milky Way Mapper program will deliver multi-epoch optical and near-infrared spectra for more t
Externí odkaz:
http://arxiv.org/abs/2203.14538