Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Silva, Leandro Beraldo e"'
Autor:
Debattista, Victor P., Khachaturyants, Tigran, Amarante, Joao A. S., Carr, Christopher, Silva, Leandro Beraldo e, Laporte, Chervin F. P.
We study azimuthal variations in the mean stellar metallicity, <[Fe/H]>, in a self-consistent, isolated simulation in which all stars form out of gas. We find <[Fe/H]> variations comparable to those observed in the Milky Way and which are coincident
Externí odkaz:
http://arxiv.org/abs/2402.08356
Autor:
Garver, Bethany R., Nidever, David L., Debattista, Victor P., Silva, Leandro Beraldo e, Khachaturyants, Tigran
The Milky Way stellar disk has both a thin and a thick component. The thin disk is composed mostly of younger stars ($\lesssim$8 Gyr) with a lower abundance of $\alpha$ elements, while the thick disk contains predominantly older stars ($\gtrsim$8--12
Externí odkaz:
http://arxiv.org/abs/2306.12388
Autor:
Dey, Arjun, Najita, Joan, Filion, Carrie, Han, Jiwon Jesse, Pearson, Sarah, Wyse, Rosemary, Thob, Adrien C. R., Anguiano, Borja, Apfel, Miranda, Arnaboldi, Magda, Bell, Eric F., Silva, Leandro Beraldo e, Besla, Gurtina, Bhattacharya, Aparajito, Bhattacharya, Souradeep, Chandra, Vedant, Choi, Yumi, Collins, Michelle L. M., Cunningham, Emily C., Dalcanton, Julianne J., Escala, Ivanna, Foote, Hayden R., Ferguson, Annette M. N., Gibson, Benjamin J., Gnedin, Oleg Y., Guhathakurta, Puragra, Hawkins, Keith, Horta, Danny, Ibata, Rodrigo, Kallivayalil, Nitya, Koch, Eric W., Koposov, Sergey, Lewis, Geraint F., Macri, Lucas, McKinnon, Kevin A., Nidever, David L., Olsen, Knut A. G., Patel, Ekta, Petersen, Michael S., Petric, Andreea, Price-Whelan, Adrian M., Rich, R. Michael, Riley, Alexander H., Saha, Abhijit, Sanderson, Robyn E., Sharma, Sanjib, Sohn, Sangmo Tony, Soraisam, Monika D., Steinmetz, Matthias, Valluri, Monica, Vivas, A. Katherina, Williams, Benjamin F., Wojno, J. Leigh
As our nearest large neighbor, the Andromeda Galaxy provides a unique laboratory for investigating galaxy formation and the distribution and substructure properties of dark matter in a Milky Way-like galaxy. Here, we propose an initial 2-epoch ($\Del
Externí odkaz:
http://arxiv.org/abs/2306.12302
Autor:
Han, Jiwon Jesse, Dey, Arjun, Price-Whelan, Adrian M., Najita, Joan, Schlafly, Edward F., Saydjari, Andrew, Wechsler, Risa H., Bonaca, Ana, Schlegel, David J, Conroy, Charlie, Raichoor, Anand, Drlica-Wagner, Alex, Kollmeier, Juna A., Koposov, Sergey E., Besla, Gurtina, Rix, Hans-Walter, Goodman, Alyssa, Finkbeiner, Douglas, Anand, Abhijeet, Ashby, Matthew, Bahr-Kalus, Benedict, Beaton, Rachel, Behera, Jayashree, Bell, Eric F., Bellm, Eric C, BenZvi, Segev, Silva, Leandro Beraldo e, Birrer, Simon, Blanton, Michael R., Bock, Jamie, Broekgaarden, Floor, Brout, Dillon, Brown, Warren, Brown, Anthony G. A., Bulbul, Esra, Calderon, Rodrigo, Carlin, Jeffrey L, Carrillo, Andreia, Castander, Francisco Javier, Chakraborty, Priyanka, Chandra, Vedant, Chiang, Yi-Kuan, Choi, Yumi, Clark, Susan E., Clarkson, William I., Cooper, Andrew, Crill, Brendan, Cunha, Katia, Cunningham, Emily, Dalcanton, Julianne, Danieli, Shany, Daylan, Tansu, de Jong, Roelof S., DeRose, Joseph, Dey, Biprateep, Dickinson, Mark, Dominguez, Mariano, Dong, Dillon, Eifler, Tim, El-Badry, Kareem, Erkal, Denis, Escala, Ivanna, Fazio, Giovanni, Ferguson, Annette M. N., Ferraro, Simone, Filion, Carrie, Forero-Romero, Jaime E., Fu, Shenming, Galbany, Lluís, Garavito-Camargo, Nicolas, Gawiser, Eric, Geha, Marla, Gnedin, Oleg Y., Gomez, Sebastian, Greene, Jenny, Guy, Julien, Hadzhiyska, Boryana, Hawkins, Keith, Heinrich, Chen, Hernquist, Lars, Hirata, Christopher, Hora, Joseph, Horowitz, Benjamin, Horta, Danny, Huang, Caroline, Huang, Xiaosheng, Huanyuan, Shan, Hunt, Jason A. S., Ibata, Rodrigo, Jannuzi, Buell, Johnston, Kathryn V., Jones, Michael G., Juneau, Stephanie, Kado-Fong, Erin, Kalari, Venu, Kallivayalil, Nitya, Karim, Tanveer, Keeley, Ryan, Khoperskov, Sergey, Kim, Bokyoung, Kovács, András, Krause, Elisabeth, Kremer, Kyle, Kremin, Anthony, Krolewski, Alex, Kulkarni, S. R., Kuna, Marine, L'Huillier, Benjamin, Lacy, Mark, Lan, Ting-Wen, Lang, Dustin, Leahy, Denis, Li, Jiaxuan, Lim, Seunghwan, López-Morales, Mercedes, Macri, Lucas, Marc, Manera, Mau, Sidney, McCarthy, Patrick J, McDonald, Eithne, McQuinn, Kristen, Meisner, Aaron, Melnick, Gary, Merloni, Andrea, Millard, Cléa, Millon, Martin, Minchev, Ivan, Montero-Camacho, Paulo, Morales-Gutierrez, Catalina, Morrell, Nidia, Moustakas, John, Moustakas, Leonidas, Murray, Zachary, Mutlu-Pakdil, Burcin, Myeong, GyuChul, Myers, Adam D., Nadler, Ethan, Navarete, Felipe, Ness, Melissa, Nidever, David L., Nikutta, Robert, Nushkia, Chamba, Olsen, Knut, Pace, Andrew B., Pacucci, Fabio, Padmanabhan, Nikhil, Parkinson, David, Pearson, Sarah, Peng, Eric W., Petric, Andreea O., Petric, Andreea, Ratcliffe, Bridget, Razieh, Emami, Reiprich, Thomas, Rezaie, Mehdi, Ricci, Marina, Rich, R. Michael, Richstein, Hannah, Riley, Alexander H., Rockosi, Constance, Rossi, Graziano, Salvato, Mara, Samushia, Lado, Sanchez, Javier, Sand, David J, Sanderson, Robyn E, Šarčević, Nikolina, Sarkar, Arnab, Savino, Alessandro, Schweizer, Francois, Shafieloo, Arman, Shengqi, Yang, Shields, Joseph, Shipp, Nora, Simon, Josh, Siudek, Malgorzata, Siwei, Zou, Slepian, Zachary, Smith, Verne, Sobeck, Jennifer, Sohn, Sangmo Tony, Som, Debopam, Speagle, Joshua S., Spergel, David, Szabo, Robert, Tan, Ting, Theissen, Christopher, Tollerud, Erik, Tolls, Volker, Tran, Kim-Vy, Tsiane, Kabelo, Vacca, William D., Valluri, Monica, Verberi, TonyLouis, Warfield, Jack, Weaverdyck, Noah, Weiner, Benjamin, Weisz, Daniel, Wetzel, Andrew, White, Martin, Williams, Christina C., Wolk, Scott, Wu, John F., Wyse, Rosemary, Yang, Justina R., Zaritsky, Dennis, Zelko, Ioana A., Zhimin, Zhou, Zucker, Catherine
The Nancy Grace Roman Space Telescope is capable of delivering an unprecedented all-sky, high-spatial resolution, multi-epoch infrared map to the astronomical community. This opportunity arises in the midst of numerous ground- and space-based surveys
Externí odkaz:
http://arxiv.org/abs/2306.11784
Autor:
Wheeler, Vance, Valluri, Monica, Silva, Leandro Beraldo e, Dattathri, Shashank, Debattista, Victor P.
Publikováno v:
ApJ 958 119 (2023)
Using N-body simulations we explore the effects of growing a supermassive black hole (SMBH) prior to or during the formation of a stellar bar. Keeping the final mass and growth rate of the SMBH fixed, we show that if it is introduced before or while
Externí odkaz:
http://arxiv.org/abs/2306.07424
Autor:
Almeida-Fernandes, Felipe, Placco, Vinicius, Rocha-Pinto, Helio, Fernandes, Marcelo Borges, Limberg, Guilherme, Silva, Leandro Beraldo e, Amarante, João A. S., Perottoni, Hélio, Overzier, Roderik, Schoenell, William, Ribeiro, Tiago, Kanaan, Antonio, de Oliveira, Claudia Mendes
Metal-poor stars are key to our understanding of the early stages of chemical evolution in the Universe. New multi-filter surveys, such as the Southern Photometric Local Universe Survey (S-PLUS), are greatly advancing our ability to select low-metall
Externí odkaz:
http://arxiv.org/abs/2305.12326
Autor:
Debattista, Victor P., Liddicott, David J., Gonzalez, Oscar A., Silva, Leandro Beraldo e, Amarante, Joao A. S., Lazar, Ilin, Zoccali, Manuela, Valenti, Elena, Fisher, Deanne B., Khachaturyants, Tigran, Nidever, David L., Quinn, Thomas R., Du, Min, Kassin, Susan
In Paper I we showed that clumps in high-redshift galaxies, having a high star formation rate density (\Sigma_SFR), produce disks with two tracks in the [Fe/H]-[\alpha/Fe] chemical space, similar to that of the Milky Way's (MW's) thin + thick disks.
Externí odkaz:
http://arxiv.org/abs/2303.08265
Autor:
Silva, Leandro Beraldo e, Debattista, Victor P., Anderson, Stuart R., Valluri, Monica, Erwin, Peter, Daniel, Kathryne J., Deg, Nathan
Publikováno v:
ApJ 955 38 (2023)
Many barred galaxies exhibit upturns (shoulders) in their bar major-axis density profile. Simulation studies have suggested that shoulders are supported by looped $x_1$ orbits, occur in growing bars, and can appear after bar-buckling. We investigate
Externí odkaz:
http://arxiv.org/abs/2303.04828
Autor:
Khachaturyants, Tigran, Debattista, Victor P., Ghosh, Soumavo, Silva, Leandro Beraldo e, Daniel, Kathryne J.
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters, Volume 517, Issue 1, November 2022, Pages L55-L59
We measure and compare the pattern speeds of vertical breathing, vertical bending, and spiral density waves in two isolated N-body+SPH simulations, using windowed Fourier transforms over 1 Gyr time intervals. We show that the pattern speeds of the br
Externí odkaz:
http://arxiv.org/abs/2210.00341
Autor:
Cooper, Andrew P., Koposov, Sergey E., Prieto, Carlos Allende, Manser, Christopher J., Kizhuprakkat, Namitha, Myers, Adam D., Dey, Arjun, Gaensicke, Boris T., Li, Ting S., Rockosi, Constance, Valluri, Monica, Najita, Joan, Deason, Alis, Raichoor, Anand, Wang, Mei-Yu, Ting, Yuan-Sen, Kim, Bokyoung, Carrillo, Andreia, Wang, Wenting, Silva, Leandro Beraldo e, Han, Jiwon Jesse, Ding, Jiani, Sanchez-Conde, Miguel, Aguilar, Jessica N., Ahlen, Steven, Bailey, Stephen, Belokurov, Vasily, Brooks, David, Cunha, Katia, Dawson, Kyle, de la Macorra, Axel, Doel, Peter, Eisenstein, Daniel J., Fagrelius, Parker, Fanning, Kevin, Font-Ribera, Andreu, Forero-Romero, Jaime E., Gaztanaga, Enrique, Gontcho, Satya Gontcho A, Guy, Julien, Honscheid, Klaus, Kehoe, Robert, Kisner, Theodore, Kremin, Anthony, Landriau, Martin, Levi, Michael E., Martini, Paul, Meisner, Aaron M., Miquel, Ramon, Moustakas, John, Nie, Jundan, Palanque-Delabrouille, Nathalie, Percival, Will J., Poppett, Claire, Prada, Francisco, Rehemtulla, Nabeel, Schlafly, Edward, Schlegel, David, Schubnell, Michael, Sharples, Ray M., Tarle, Gregory, Wechsler, Risa H., Weinberg, David H., Zhou, Zhimin, Zou, Hu
We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4m telescope at the Kitt Peak National Observatory. Over the next 5 yr DESI MWS will observe approximately seven million
Externí odkaz:
http://arxiv.org/abs/2208.08514