Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Bizyaev, Dmitry"'
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:
Wanderley, Fábio, Cunha, Katia, Souto, Diogo, Smith, Verne V., Cao, Lyra, Pinsonneault, Marc, Prieto, C. Allende, Covey, Kevin, Masseron, Thomas, Pascucci, Ilaria, Stassun, Keivan G., Terrien, Ryan, Bergsten, Galen J., Bizyaev, Dmitry, Fernández-Trincado, José G., Jönsson, Henrik, Hasselquist, Sten, Holtzman, Jon A., Lane, Richard R., Mahadevan, Suvrath, Majewski, Steven R., Minniti, Dante, Pan, Kaike, Serna, Javier, Sobeck, Jennifer, Stringfellow, Guy S.
We present a spectroscopic analysis of a sample of 48 M dwarf stars ($0.2 M_{\odot}< M < 0.6 M_{\odot}$) from the Hyades open cluster using high-resolution H-band spectra from the SDSS/APOGEE survey. Our methodology adopts spectrum synthesis with LTE
Externí odkaz:
http://arxiv.org/abs/2305.07065
Autor:
Cañas, Caleb I., Bender, Chad F., Mahadevan, Suvrath, Bizyaev, Dmitry, De Lee, Nathan, Fleming, Scott W., Hearty, Fred, Majewski, Steven R., Nitschelm, Christian, Schneider, Donald P., Serna, Javier, Stassun, Keivan G., Stefánsson, Guðmundur, Stringfellow, Guy S., Wilson, John C.
Publikováno v:
ApJS (2023), 265, 50
We report the characterization of 28 low-mass ($0.02\mathrm{~M_\odot}\le\mathrm{~M_{2}}\le0.25\mathrm{~M_\odot}$) companions to $\textit{Kepler}$ objects of interest (KOIs), eight of which were previously designated confirmed planets. These objects w
Externí odkaz:
http://arxiv.org/abs/2302.07713
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:
Lazarz, Daniel, Yan, Renbin, Wilhelm, Ronald, Chen, Yanping, Hill, Lewis, Holtzman, Jon A., Imig, Julie, Maraston, Claudia, Mészáros, Szabolcs, Stringfellow, Guy S., Thomas, Daniel, Beers, Timothy C., Bizyaev, Dmitry, Drory, Niv, Lane, Richard R., Nitschelm, Christian
We present a stellar parameter catalog built to accompany the MaStar Stellar Library, which is a comprehensive collection of empirical, medium-resolution stellar spectra. We constructed this parameter catalog by using a multicomponent $\chi^{2}$ fitt
Externí odkaz:
http://arxiv.org/abs/2210.13511
Autor:
Myers, Natalie, Donor, John, Spoo, Taylor, Frinchaboy, Peter M., Cunha, Katia, Price-Whelan, Adrian M., Majewski, Steven R., Beaton, Rachael L., Zasowski, Gail, O'Connell, Julia, Ray, Amy E., Bizyaev, Dmitry, Chiappini, Cristina, García-Hernández, D. A., Geisler, Doug, Jönsson, Henrik, Lane, Richard R., Longa-Peña, Penélope, Minchev, Ivan, Minniti, Dante, Nitschelm, Christian, Roman-Lopes, A.
The goal of the Open Cluster Chemical Abundances and Mapping (OCCAM) survey is to constrain key Galactic dynamic and chemical evolution parameters by the construction and analysis of a large, comprehensive, uniform data set of infrared spectra for st
Externí odkaz:
http://arxiv.org/abs/2206.13650
Autor:
Spoo, Taylor, Tayar, Jamie, Frinchaboy, Peter M., Cunha, Katia, Myers, Natalie, Donor, John, Majewski, Steven R., Bizyaev, Dmitry, Garcia-Hernandez, D. A., Jonsson, Henrik, Lane, Richard R., Pan, Kaike, Longa-Pena, Penelope, Roman-Lopes, A.
Large scale surveys open the possibility to investigate Galactic evolution both chemically and kinematically, however, reliable stellar ages remain a major challenge. Detailed chemical information provided by high-resolution spectroscopic surveys of
Externí odkaz:
http://arxiv.org/abs/2203.05463
Autor:
Hill, Lewis, Thomas, Daniel, Maraston, Claudia, Yan, Renbin, Neumann, Justus, Lundgren, Andrew, Lazarz, Daniel, Chen, Yan-Ping, Cappellari, Michele, Holtzman, Jon A., Imig, Julie, Cunha, Katia, Stringfellow, Guy, Bizyaev, Dmitry, Law, David R., Stassun, Keivan G., Drory, Niv, Merrifield, Michael, Beers, Timothy C.
We calculate the fundamental stellar parameters effective temperature, surface gravity and iron abundance - T$_{\rm eff}$, log g, [Fe/H] - for the final release of the Mapping Nearby Galaxies at APO (MaNGA) Stellar Library (MaStar), containing 59,266
Externí odkaz:
http://arxiv.org/abs/2111.05347
Autor:
Beaton, Rachael L., Oelkers, Ryan J., Hayes, Christian R., Covey, Kevin R., Chojnowski, S. D., De Lee, Nathan, Sobeck, Jennifer S., Majewski, Steven R., Cohen, Roger, Fernandez-Trincado, Jose, Longa-Pena, Penelope, O'Connell, Julia E., Santana, Felipe A., Stringfellow, Guy S., Zasowski, Gail, Aerts, Conny, Anguiano, Borja, Bender, Chad, Canas, Caleb I., Cunha, Katia, Fleming, John Donor Scott W., Frinchaboy, Peter M., Feuillet, Diane, Harding, Paul, Hasselquist, Sten, Holtzman, Jon, Johnson, Jennifer A., Kollmeier, Juna A., Kounkel, Marina, Mahadevan, Suvrath, Price-Whelan, Adrian. M., Rojas-Arriagada, Alvaro, Roman-Zuniga, Carlos, Schlafly, Edward F., Schultheis, Mathias, Shetrone, Matthew, Simon, Joshua D., Stassun, Keivan G., Stutz, Amelia M., Tayar, Jamie, Teske, Johanna, Tkachenko, Andrew, Troup, Nick, Albareti, Franco D., Bizyaev, Dmitry, Bovy, Jo, Burgasser, Adam J., Comparat, Johan, Downes, Juan Jose, Geisler, Doug, Inno, Laura, Manchado, Arturo, Ness, Melissa K., Pinsonneault, Marc H., Prada, Francisco, Roman-Lopes, Alexandre, Simonian, Gregory V. A., Smith, Verne V., Yan, Renbin, Zamora, Olga
APOGEE-2 is a dual-hemisphere, near-infrared (NIR), spectroscopic survey with the goal of producing a chemo-dynamical mapping of the Milky Way Galaxy. The targeting for APOGEE-2 is complex and has evolved with time. In this paper, we present the upda
Externí odkaz:
http://arxiv.org/abs/2108.11907
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