Navegação Ciências Exatas e da Terra por Autor "Minchev, Ivan"

Resultados 1-8 de 8

    • Cardinal kinematics – I. : rotation fields of the APOGEE survey 

      Kordopatis, Georges; Wyse, Rosemary F.G.; Chiappini, C.C.M.; Minchev, Ivan; Anders, Friedrich; Santiago, Basilio Xavier (2017) [Artigo de periódico]
      Correlations between stellar chemistry and kinematics have long been used to gain insight into the evolution of the Milky Way Galaxy. Orbital angular momentum is a key physical parameter and it is often estimated from ...

    • Chemodynamics of the Milky Way I. The first year of APOGEE data 

      Anders, Friedrich; Chiappini, C.C.M.; Santiago, Basilio Xavier; Rocha-Pinto, H.J.; Girardi, Leo Alberto; Costa, Luiz N. da; Maia, Marcio Antonio Geimba; Steinmetz, M.; Minchev, Ivan; Schultheis, Mathias; Boeche, Corrado; Miglio, Andrea; Montalbán, Josefina; Schneider, D.P.; Beers, T.C.; Cunha, Katia; Allende Prieto, Carlos; Balbinot, Eduardo; Bizyaev, D.; Brauer, Dorothée; Brinkmann, Jon; Frinchaboy, P.M.; García Pérez, Ana Elia; Hayden, Michael; Hearty, Frederick R.; Holtzman, J.A.; Johnson, J.A.; Kinemuchi, Karen; Majewski, Steven Raymond; Malanushenko, E.; Malanushenko, V.; Nidever, D.L.; O'Connell, Robert West; Pan, K.; Robin, A.C.; Schiavon, Ricardo P.; Shetrone, M.; Skrutskie, M.F.; Smith, Verne V.; Stassun, Keivan G.; Zasowski, G. (2014) [Artigo de periódico]
      Context. The Apache Point Observatory Galactic Evolution Experiment (APOGEE) features the first multi-object high-resolution fiber spectrograph in the near-infrared ever built, thus making the survey unique in its capabilities: ...

    • Estimating stellar birth radii and the time evolution of Milky Way’s ISM metallicity gradient 

      Minchev, Ivan; Anders, Friedrich; Recio-Blanco, Alejandra; Chiappini, C.C.M.; Laverny, Patrick de; Queiroz, Anna Bárbara de Andrade; Steinmetz, M.; Adibekyan, Vardan; Carrillo, Ismael; Cescutti, Gabriele; Guiglion, Guillaume; Hayden, Michael; Jong, Roelof S. de; Kordopatis, Georges; Majewski, Steven Raymond; Martig, Marie; Santiago, Basilio Xavier (2018) [Artigo de periódico]
      We present a semi-empirical, largelymodel-independent approach for estimatingGalactic birth radii, rbirth, for Milky Way disc stars. The technique relies on the justifiable assumption that a negative radial metallicity ...

    • Kinematics with Gaia DR2 : the force of a dwarf 

      Carrillo, Ismael; Minchev, Ivan; Steinmetz, M.; Monari, Giacomo; Laporte, Chervin F. P.; Anders, Friedrich; Queiroz, Anna Bárbara de Andrade; Chiappini, C.C.M.; Khalatyan, Arman V.; Martig, Marie; McMillan, Paul; Santiago, Basilio Xavier; Youakim, Kris (2019) [Artigo de periódico]
      We use Gaia DR2 astrometric and line-of-sight velocity information combined with two sets of distances obtained with a Bayesian inference method to study the 3D velocity distribution in the Milky Way disc. We search for ...

    • A new method for estimating the pattern speed of spiral structure in the Milky Way 

      Junqueira, Thiago Correr; Chiappini, C.C.M.; Lépine, Jacques Raymond Daniel; Minchev, Ivan; Santiago, Basilio Xavier (2015) [Artigo de periódico]
      In the last few decades, many efforts have been made to understand the effect of spiral arms on the gas and stellar dynamics in the Milky Way disc. One of the fundamental parameters of the spiral structure is its angular ...

    • Sloan Digital Sky Survey IV : mapping the Milky Way, nearby galaxies, and the distant universe 

      Blanton, M.R.; Bershady, Matthew A.; Abolfathi, Bela; Albareti, Franco D.; Allende Prieto, Carlos; Almeida, Andres; Alonso Garcia, Javier; Anders, Friedrich; Anderson, Scott F.; Andrews, Brett H.; Aquino-Ortíz, Erik; Aragón-Salamanca, Alfonso; Argudo-Fernández, Maria; Armengaud, Eric; Aubourg, Éric; Avila-Reese, Vladimir; Badenes, Carles; Bailey, Stephen; Barger, Kathleen A.; Barrera-Ballesteros, Jorge; Bartosz, Curtis; Bates, Dominic; Baumgarten, Falk; Bautista, Julian; Beaton, Rachael Lynn; Beers, T.C.; Belfiore, Francesco; Bender, Chad Frederick; Berlind, Andreas A.; Bernardi, Mariangela; Beutler, Florian; Bird, Jonathan C.; Bizyaev, D.; Blanc, Guillermo A.; Blomqvist, Michael C.; Bolton, Adam S.; Boquien, Médéric; Borissova, Jura; Bosch, Remco van den; Bovy, Jo; Brandt, W.N.; Brinkmann, Jon; Brownstein, Joel R.; Bundy, Kevin; Burgasser, Adam J.; Burtin, Etienne; Busca, Nicolas G.; Cappellari, Michele; Carigi, Leticia; Carlberg, J.K.; Carnero Rosell, Aurelio; Carrera, Ricardo; Chanover, Nancy J.; Cherinka, Brian; Cheung, Edmond; Chew, Yilen Gómez Maqueo; Chiappini, C.C.M.; Choi, Peter Doohyun; Chojnowski, Stephen Drew; Chuang, Chia-Hsun; Chung, Haeun; Cirolini, Rafael Fernando; Clerc, Nicolas; Cohen, Roger; Comparat, Johan; Costa, Luiz N. da; Cousinou, Marie-Claude; Covey, Kevin; Crane, Jeffrey D.; Croft, Rupert A.C.; Cruz-Gonzalez, Irene; Cuadra, Daniel Garrido; Cunha, Katia; Damke, Guillermo J.; Darling, Jeremy; Davies, Roger L.; Dawson, K.S.; Macorra, Axel de la; Dell'Agli, Flavia; De Lee, Nathan M.; Delubac, Timothée; Di Mille, Francesco; Diamond-Stanic, Aleksandar M.; Cano-Díaz, Mariana; Donor, John; Downes Wallace, Juan Jose; Drory, Niv; Du Mas Des Bourboux, Hélion; Duckworth, Christopher; Dwelly, Tom; Dyer, Jamie Christine; Ebelke, Garrett L.; Eigenbrot, Arthur D.; Eisenstein, Daniel, J.; Emsellem, Eric; Eracleous, Michael; Escoffier, Stephanie; Evans, Michael L.; Fan, Xiaohui; Fernández Alvar, Emma; Fernández-Trincado, José Gregorio; Feuillet, Diane; Finoguenov, Alexis; Fleming, S.W.; Font-Ribera, A.; Fredrickson, Alexander; Freischlad, Gordon; Frinchaboy, P.M.; Fuentes, Carla E.; Galbany, Lluís; Dias, Rafael Augusto Garcia; García-Hernández, D. A.; Gaulme, Patrick; Geisler, Doug; Gelfand, Joseph D.; Gil-Marín, Héctor; Gillespie, Bruce A.; Goddard, Daniel; Gonzalez-Perez, Violeta; Grabowski, Kathleen; Green, Paul J.; Grier, Catherine J.; Gunn, James E.; Guo, Hong; Guy, Julien; Hagen, Alex; Hahn, ChangHoon; Hall, Matthew; Harding, Paul; Hasselquist, Sten; Hawley, Suzanne L.; Hearty, Frederick R.; González Hernández, Jonay I.; Ho, Shirley; Hogg, D.W.; Holley-Bockelmann, Kelly; Holtzman, J.A.; Holzer, Parker H.; Huehnerhoff, Joseph; Hutchinson, Timothy A.; Hwang, Ho Seong; Ibarra Medel, Hector Javier; Ilha, Gabriele da Silva; Ivans, Inese I.; Ivory, KeShawn; Jackson, Kelly M.; Jensen, Trey W.; Johnson, Jennifer A.; Jones, Amy P.; Jönsson, Henrik; Jullo, Eric; Kamble, Vikrant Anand; Kinemuchi, Karen; Kirkby, David; Kitaura, Francisco-Shu; Klaene, Mark A.; Knapp, G. R.; Kneib, J.P.; Kollmeier, Juna A.; Lacerna, Ivan; Lane, Richard R.; Lang, Dustin; Law, David R.; Lazarz, Daniel; Lee, Youngbae; Le Goff, Jean-Marc; Liang, Fu-Heng; Li, Cheng; Li, Hongyu; Lian, Jianhui; Lima, Marcos Vinicius Borges Teixeira; Lin, Lihwai; Lin, Y.-T.; Lis, Sara Bertran de; Lizaola, Miguel Angel C. de Icaza; Long, Daniel C.; Lucatello, Sara; Lundgren, B.; Macdonald, Nicholas; Machado, Alice Deconto; MacLeod, Chelsea L.; Mahadevan, Suvrath; Maia, Marcio Antonio Geimba; Maiolino, Roberto; Majewski, Steven Raymond; Malanushenko, E.; Malanushenko, V.; Manchado, Arturo; Mao, Shude; Maraston, Claudia; Marques-Chaves, Rui; Masseron, Thomas; Masters, K.L.; McBride, Cameron K.; McDermid, Richard; McGrath, Brianne; McGreer, Ian D.; Medina Peña, Nicolás; Melendez, Matthew; Merloni, Andrea; Merrifield, Michael; Mészáros, S.; Meza, Andres; Minchev, Ivan; Minniti, Dante; Miyaji, Takamitsu; More, Surhud Shrikant; Mulchaey, John Scott; Muller-Sanchez, Francisco; Muna, Demitri; Mũñoz, Ricardo R.; Myers, A.D.; Nair, Preethi B.; Nandra, Kirpal; Nascimento, Janaina Correa do; Negrete, Alenka; Ness, Melissa; Newman, Jeffrey A.; Nichol, Robert C.; Nidever, D.L.; Nitschelm, Christian; Ntelis, Pierros; O'Connell, Julia E.; Oelkers, Ryan J.; Oravetz, Audrey; Oravetz, Daniel J.; Pace, Zach; Padilla, Nelson; Palanque-Delabrouille, Nathalie; Alonso Palicio, Pedro; Pan, K.; Parejko, J.K.; Parikh, Taniya; Pâris, Isabelle; Park, Changbom; Patten, Alim Y.; Peirani, Sébastien; Pellejero-Ibanez, Marcos; Penny, Samantha J.; Percival, Will J.; Pérez-Fournon, Ismael; Petitjean, P.; Pieri, Matthew M.; Pinsonneault, Marc H.; Pisani, Alice; Poleski, Radosław; Prada, Francisco; Prakash, Abhishek; Queiroz, Anna Bárbara de Andrade; Raddick, M. Jordan; Raichoor, Anand; Rembold, Sandro Barboza; Richstein, Hannah; Riffel, Rogemar André; Riffel, Rogério; Rix, H.-W.; Robin, Annie C.; Rockosi, C.M.; Rodríguez-Torres, Sergio; Roman-Lopes, Alexandre; Román-Zñiga, Carlos Gerardo; Rosado, Margarita; Ross, Ashley Jacob; Rossi, Graziano; Ruan, John J.; Ruggeri, Rossana; Rykoff, Eli; Salazar-Albornoz, Salvador; Salvato, Mara; Sánchez, Ariel G.; Sánchez Aguado, David; Sánchez-Gallego, José Ramón; Santana, Felipe A.; Santiago, Basilio Xavier; Sayres, Conor; Schiavon, Ricardo P.; Schimoia, Jáderson da Silva; Schlafly, Edward F.; Schlegel, David J.; Schneider, D.P.; Schultheis, Mathias; Schuster, William J.; Schwope, Axel D.; Seo, Hee-Jong; Shao, Zhengyi; Shen, Shiyin; Shetrone, M.; Shull, John Michael; Simon, Josh D.; Skinner, Danielle; Skrutskie, M.F.; Slosar, A.; Smith, Verne V.; Sobeck, Jennifer S.; Sobreira, Flávia; Somers, Garrett; Souto, Diogo Martins; Stark, David V.; Stassun, Keivan G.; Stauffer, Fritz; Steinmetz, M.; Storchi-Bergmann, Thaisa; Streblyanska, Alina; Stringfellow, Guy S.; Suárez, Genaro; Sun, Jing; Suzuki, Nao; Szigeti, Laszlo; Taghizadeh-Popp, Manuchehr; Tang, Baitian; Tao, Charling; Tayar, Jamie; Tembe, Mita; Teske, Johanna K.; Thakar, Aniruddha R.; Thomas, D.; Thompson, Benjamin A.; Tinker, Jeremy; Tissera, Patricia Beatriz; Tojeiro, R.; Hernandez-Toledo, Hector M.; Torre, Sylvain De La; Tremonti, Christy A.; Troup, Nicholas W.; Valenzuela, Octavio; Valpuesta, Inma Martinez; Vargas-González, Jaime; Vargas Magaña, Mariana; Vazquez, Jose Alberto; Villanova , Sandro; Vivek, M.; Vogt, N.P.; Wake, D.A.; Walterbos, Rene A. M.; Wang, Yuting; Weaver, Benjamin A.; Weijmans, Anne Marie; Weinberg, D.H.; Westfall, Kyle B.; Whelan, David G.; Wild, Vivienne; Wilson, John C.; Wood-Vasey, W.M.; Wylezalek, Dominika; Xiao, Ting; Yan, Renbin; Yang, Meng; Ybarra, Jason E.; Yèche, Christophe; Zakamska, Nadia L.; Zamora, Olga; Zarrouk, Pauline; Zasowski, G.; Zhang, Kai; Zhao, Gong-Bo; Zheng, Zheng; Zhou, Xu; Zhou, Zhimin; Zhu, Guangtun; Zoccali, Manuela; Zou, Hu (2017) [Artigo de periódico]
      We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands ...

    • StarHorse results for spectroscopic surveys and Gaia DR3 : chrono-chemical populations in the solar vicinity, the genuine thick disk, and young alpha-rich stars 

      Queiroz, Anna Bárbara de Andrade; Anders, Friedrich; Chiappini, C.C.M.; Barbuy, Beatriz; Khalatyan, Arman V.; Santiago, Basilio Xavier; Nepal, Samir; Steinmetz, M.; Gallart, Carme; Valentini, Marica; Dal Ponte, Marina; Barbuy, Beatriz; Pérez Villegas, Maria de Los Angeles; Masseron, Thomas; Fernández-Trincado, José Gregorio; Khoperskov, Sergey A.; Minchev, Ivan; Fernández Alvar, Emma; Lane, Richard R.; Nitschelm, Christian (2023) [Artigo de periódico]
      The Gaia mission has provided an invaluable wealth of astrometric data for more than a billion stars in our Galaxy. The synergy between Gaia astrometry, photometry, and spectroscopic surveys gives us comprehensive information ...

    • Young (α/Fe)-enhanced stars discovered by CoRoT and APOGEE : what is their origin? 

      Chiappini, C.C.M.; Anders, Friedrich; Rodrigues, Thaise da Silva; Miglio, Andrea; Montalbán, Josefina; Mosser, Benoît; Girardi, Leo Alberto; Valentini, Marica; Noels, Arlette; Morel , Thierry; Minchev, Ivan; Steinmetz, M.; Santiago, Basilio Xavier; Schultheis, Mathias; Martig, Marie; Costa, Luiz N. da; Maia, Marcio Antonio Geimba; Allende Prieto, Carlos; Assis Peralta, R. de; Hekker, Saskia; Themeßl, Nathalie; Kallinger, Thomas; Garcia, Rafael A.; Mathur, Savita; Baudin, Frederic; Beers, T.C.; Cunha, Katia; Harding, Paul; Holtzman, J.A.; Majewski, Steven Raymond; Mészáros, S.; Nidever, D.L.; Pan, K.; Schiavon, Ricardo P.; Shetrone, M.; Schneider, D.P.; Stassun, Keivan G. (2015) [Artigo de periódico]
      We report the discovery of a group of apparently young CoRoT red-giant stars exhibiting enhanced [ /Fe] abundance ratios (as determined from APOGEE spectra) with respect to solar values. Their existence is not explained ...