2-process Model and Residual Abundance Analysis of the Milky Way Massive Satellites

Autor: Hasselquist, Sten, Hayes, Christian R., Griffith, Emily J., Weinberg, David, Sit, Tawny, Beaton, Rachael L., Horta, Danny

The ``2-process Model'' is a promising technique for interpreting stellar chemical abundance data from large-scale surveys (e.g., SDSS-IV/V, GALAH), enabling more quantitative empirical studies of differences in chemical enrichment history between ga

Externí odkaz: http://arxiv.org/abs/2408.10393

GHOST Commissioning Science Results III: Characterizing an iron-poor damped Lyman $\alpha$ system

Autor: Berg, Trystyn A. M., Hayes, Christian R., Cristiani, Stefano, McConnachie, Alan, Robertson, J. Gordon, Sestito, Federico, Simpson, Chris, Waller, Fletcher, Chin, Timothy, Densmore, Adam, Diaz, Ruben J., Edgar, Michael L., Lettura, Javier Fuentes, Gómez-Jiménez, Manuel, Kalari, Venu M., Lawrence, Jon, Margheim, Steven, Pazder, John, Ruiz-Carmona, Roque, Salinas, Ricardo, Silva, Karleyne M. G., Silversides, Katherine, Venn, Kim A.

The Gemini High-resolution Optical SpecTrograph (GHOST) is a new echelle spectrograph available on the Gemini-South telescope as of Semester 2024A. We present the first high resolution spectrum of the quasar J1449-1227 (redshift z_em=3.27) using data

Externí odkaz: http://arxiv.org/abs/2404.10058

The discovery of the faintest known Milky Way satellite using UNIONS

Autor: Smith, Simon E. T., Cerny, William, Hayes, Christian R., Sestito, Federico, Jensen, Jaclyn, McConnachie, Alan W., Geha, Marla, Navarro, Julio, Li, Ting S., Cuillandre, Jean-Charles, Errani, Raphaël, Chambers, Ken, Gwyn, Stephen, Hammer, Francois, Hudson, Michael J., Magnier, Eugene, Martin, Nicolas

We present the discovery of Ursa Major III/UNIONS 1, the least luminous known satellite of the Milky Way, which is estimated to have an absolute V-band magnitude of $+2.2^{+0.4}_{-0.3}$ mag, equivalent to a total stellar mass of 16$^{+6}_{-5}$ M$_{\o

Externí odkaz: http://arxiv.org/abs/2311.10147

Probing the early Milky Way with GHOST spectra of an extremely metal-poor star in the Galactic disk

Autor: Dovgal, Anya, Venn, Kim A., Sestito, Federico, Hayes, Christian R., McConnachie, Alan W., Navarro, Julio F., Placco, Vinicius M., Starkenburg, Else, Martin, Nicolas F., Pazder, John S., Chiboucas, Kristin, Deibert, Emily, Gamen, Roberto, Heo, Jeong-Eun, Kalari, Venu M., Martioli, Eder, Xu, Siyi, Diaz, Ruben, Gomez-Jiminez, Manuel, Henderson, David, Prado, Pablo, Quiroz, Carlos, Robertson, J. Gordon, Ruiz-Carmona, Roque, Simpson, Chris, Urrutia, Cristian, Waller, Fletcher, Berg, Trsytyn, Burley, Gregory, Hartman, Zachary, Ireland, Michael, Margheim, Steve, Perez, Gabriel, Thomas-Osip, Joanna

Publikováno v: MNRAS 527 (2024) 7810-7824

Pristine_183.6849+04.8619 (P1836849) is an extremely metal-poor ([Fe/H]$=-3.3\pm0.1$) star on a prograde orbit confined to the Galactic disk. Such stars are rare and may have their origins in protogalactic fragments that formed the early Milky Way, i

Externí odkaz: http://arxiv.org/abs/2310.03075

The 13th Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey Mapping Nearby Galaxies at Apache Point Observatory

Autor: Albareti, Franco D., Prieto, Carlos Allende, Almeida, Andres, Anders, Friedrich, Anderson, Scott, Andrews, Brett H., Aragón-Salamanca, Alfonso, Argudo-Fernández, Maria, Armengaud, Eric, Aubourg, Eric, Avila-Reese, Vladimir, Badenes, Carles, Bailey, Stephen, Barbuy, Beatriz, Barger, Kat, Barrera-Ballesteros, Jorge, Bartosz, Curtis, Basu, Sarbani, Bates, Dominic, Battaglia, Giuseppina, Baumgarten, Falk, Baur, Julien, Bautista, Julian, Beers, Timothy C., Belfiore, Francesco, Bershady, Matthew, de Lis, Sara Bertran, Bird, Jonathan C., Bizyaev, Dmitry, Blanc, Guillermo A., Blanton, Michael, Blomqvist, Michael, Bolton, Adam S., Borissova, J., Bovy, Jo, Brandt, William Nielsen, Brinkmann, Jonathan, Brownstein, Joel R., Bundy, Kevin, Burtin, Etienne, Busca, Nicolás G., Chavez, Hugo Orlando Camacho, Díaz, M. Cano, Cappellari, Michele, Carrera, Ricardo, Chen, Yanping, Cherinka, Brian, Cheung, Edmond, Chiappini, Cristina, Chojnowski, Drew, Chuang, Chia-Hsun, Chung, Haeun, Cirolini, Rafael Fernando, Clerc, Nicolas, Cohen, Roger E., Comerford, Julia M., Comparat, Johan, Correa do Nascimento, Janaina, Cousinou, Marie-Claude, Covey, Kevin, Crane, Jeffrey D., Croft, Rupert, Cunha, Katia, Darling, Jeremy, Davidson, James W., Dawson, Kyle, Da Costa, Luiz, Da Silva Ilha, Gabriele, Machado, Alice Deconto, Delubac, Timothée, De Lee, Nathan, De la Macorra, Axel, De la Torre, Sylvain, Diamond-Stanic, Aleksandar M., Donor, John, Downes, Juan Jose, Drory, Niv, Du, Cheng, Du Mas des Bourboux, Hélion, Dwelly, Tom, Ebelke, Garrett, Eigenbrot, Arthur, Eisenstein, Daniel J., Elsworth, Yvonne P., Emsellem, Eric, Eracleous, Michael, Escoffier, Stephanie, Evans, Michael L., Falcón-Barroso, Jesús, Fan, Xiaohui, Favole, Ginevra, Fernandez-Alvar, Emma, Fernandez-Trincado, J. G., Feuillet, Diane, Fleming, Scott W., Font-Ribera, Andreu, Freischlad, Gordon, Frinchaboy, Peter, Fu, Hai, Gao, Yang, Garcia, Rafael A., Garcia-Dias, R., Garcia-Hernández, D. A., Pérez, Ana E. Garcia, Gaulme, Patrick, Ge, Junqiang, Geisler, Douglas, Gillespie, Bruce, Marin, Hector Gil, Girardi, Léo, Goddard, Daniel, Chew, Yilen Gomez Maqueo, Gonzalez-Perez, Violeta, Grabowski, Kathleen, Green, Paul, Grier, Catherine J., Grier, Thomas, Guo, Hong, Guy, Julien, Hagen, Alex, Hall, Matt, Harding, Paul, Harley, R. E., Hasselquist, Sten, Hawley, Suzanne, Hayes, Christian R., Hearty, Fred, Hekker, Saskia, Toledo, Hector Hernandez, Ho, Shirley, Hogg, David W., Holley-Bockelmann, Kelly, Holtzman, Jon A., Holzer, Parker H., Hu, Jian, Huber, Daniel, Hutchinson, Timothy Alan, Hwang, Ho Seong, Ibarra-Medel, Héctor J., Ivans, Inese I., Ivory, KeShawn, Jaehnig, Kurt, Jensen, Trey W., Johnson, Jennifer A., Jones, Amy, Jullo, Eric, Kallinger, T., Kinemuchi, Karen, Kirkby, David, Klaene, Mark, Kneib, Jean-Paul, Kollmeier, Juna A., Lacerna, Ivan, Lane, Richard R., Lang, Dustin, Laurent, Pierre, Law, David R., Leauthaud, Alexie, Le Goff, Jean-Marc, Li, Chen, Li, Cheng, Li, Niu, Li, Ran, Liang, Fu-Heng, Liang, Yu, Lima, Marcos, Lin, Lihwai, Lin, Lin, Lin, Yen-Ting, Liu, Chao, Long, Dan, Lucatello, Sara, MacDonald, Nicholas, MacLeod, Chelsea L., Mackereth, J. Ted, Mahadevan, Suvrath, Maia, Marcio Antonio Geimba, Maiolino, Roberto, Majewski, Steven R., Malanushenko, Olena, Malanushenko, Viktor, Mallmann, Nícolas Dullius, Manchado, Arturo, Maraston, Claudia, Marques-Chaves, Rui, Valpuesta, Inma Martinez, Masters, Karen L., Mathur, Savita, McGreer, Ian D., Merloni, Andrea, Merrifield, Michael R., Meszáros, Szabolcs, Meza, Andres, Miglio, Andrea, Minchev, Ivan, Molaverdikhani, Karan, Montero-Dorta, Antonio D., Mosser, Benoit, Muna, Demitri, Myers, Adam, Nair, Preethi, Nandra, Kirpal, Ness, Melissa, Newman, Jeffrey A., Nichol, Robert C., Nidever, David L., Nitschelm, Christian, O’Connell, Julia, Oravetz, Audrey, Oravetz, Daniel J., Pace, Zachary, Padilla, Nelson, Palanque-Delabrouille, Nathalie, Pan, Kaike, Parejko, John, Paris, Isabelle, Park, Changbom, Peacock, John A., Peirani, Sebastien, Pellejero-Ibanez, Marcos, Penny, Samantha, Percival, Will J., Percival, Jeffrey W., Perez-Fournon, Ismael, Petitjean, Patrick, Pieri, Matthew, Pinsonneault, Marc H., Pisani, Alice, Prada, Francisco, Prakash, Abhishek, Price-Jones, Natalie, Raddick, M. Jordan, Rahman, Mubdi, Raichoor, Anand, Rembold, Sandro Barboza, Reyna, A. M., Rich, James, Richstein, Hannah, Ridl, Jethro, Riffel, Rogemar A., Riffel, Rogério, Rix, Hans-Walter, Robin, Annie C., Rockosi, Constance M., Rodríguez-Torres, Sergio, Rodrigues, Thaíse S., Roe, Natalie, Lopes, A. Roman, Román-Zúñiga, Carlos, Ross, Ashley J., Rossi, Graziano, Ruan, John, Ruggeri, Rossana, Runnoe, Jessie C., Salazar-Albornoz, Salvador, Salvato, Mara, Sanchez, Sebastian F., Sanchez, Ariel G., Sanchez-Gallego, José R., Santiago, Basílio Xavier, Schiavon, Ricardo, Schimoia, Jaderson S., Schlafly, Eddie, Schlegel, David J., Schneider, Donald P., Schönrich, Ralph, Schultheis, Mathias, Schwope, Axel, Seo, Hee-Jong, Serenelli, Aldo, Sesar, Branimir, Shao, Zhengyi, Shetrone, Matthew, Shull, Michael, Aguirre, Victor Silva, Skrutskie, M. F., Slosar, Anže, Smith, Michael, Smith, Verne V., Sobeck, Jennifer, Somers, Garrett, Souto, Diogo, Stark, David V., Stassun, Keivan G., Steinmetz, Matthias, Stello, Dennis, Bergmann, Thaisa Storchi, Strauss, Michael A., Streblyanska, Alina, Stringfellow, Guy S., Suarez, Genaro, Sun, Jing, Taghizadeh-Popp, Manuchehr, Tang, Baitian, Tao, Charling, Tayar, Jamie, Tembe, Mita, Thomas, Daniel, Tinker, Jeremy, Tojeiro, Rita, Tremonti, Christy, Troup, Nicholas, Trump, Jonathan R., Unda-Sanzana, Eduardo, Valenzuela, O., Van den Bosch, Remco, Vargas-Magaña, Mariana, Vazquez, Jose Alberto, Villanova, Sandro, Vivek, M., Vogt, Nicole, Wake, David, Walterbos, Rene, Wang, Yuting, Wang, Enci, Weaver, Benjamin Alan, Weijmans, Anne-Marie, Weinberg, David H., Westfall, Kyle B., Whelan, David G., Wilcots, Eric, Wild, Vivienne, Williams, Rob A., Wilson, John, Wood-Vasey, W. M., Wylezalek, Dominika, Xiao, Ting, Yan, Renbin, Yang, Meng, Ybarra, Jason E., Yeche, Christophe, Yuan, Fang-Ting, Zakamska, Nadia, Zamora, Olga, Zasowski, Gail, Zhang, Kai, Zhao, Cheng, Zhao, Gong-Bo, Zheng, Zheng, Zhou, Zhi-Min, Zhu, Guangtun, Zinn, Joel C., Zou, Hu

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) began observations in 2014 July. It pursues three core programs: the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2), Mapping Nearby Galaxies at APO (MaNGA), and the

Externí odkaz: http://hdl.handle.net/10150/626420
http://arizona.openrepository.com/arizona/handle/10150/626420