All-sky Kinematics and Chemistry of Monoceros Stellar Overdensity

Autor: Lais Borbolato, Hélio D. Perottoni, Silvia Rossi, Guilherme Limberg, Angeles Pérez-Villegas, Friedrich Anders, Teresa Antoja, Chervin F. P. Laporte, Helio J. Rocha-Pinto, Rafael M. Santucci

Publikováno v: The Astrophysical Journal, Vol 960, Iss 1, p 52 (2023)

We explore the kinematic and chemical properties of the Monoceros stellar overdensity by combining data from the Two Micron All Sky Survey, Wide-field Infrared Survey Explorer, APOGEE, and Gaia. Monoceros is a structure located toward the Galactic an

Externí odkaz: https://doaj.org/article/6f92e638424c4ad091b4d9cfc06d8746

Phase-space Properties and Chemistry of the Sagittarius Stellar Stream Down to the Extremely Metal-poor ([Fe/H] ≲ −3) Regime

Autor: Guilherme Limberg, Anna B. A. Queiroz, Hélio D. Perottoni, Silvia Rossi, João A. S. Amarante, Rafael M. Santucci, Cristina Chiappini, Angeles Pérez-Villegas, Young Sun Lee

Publikováno v: The Astrophysical Journal, Vol 946, Iss 2, p 66 (2023)

In this work, we study the phase-space and chemical properties of the Sagittarius (Sgr) stream, the tidal tails produced by the ongoing destruction of the Sgr dwarf spheroidal (dSph) galaxy, focusing on its very metal-poor (VMP; [Fe/H] < −2) conten

Externí odkaz: https://doaj.org/article/132efa697c1641cd93028d77629e1dd5

The Unmixed Debris of Gaia-Sausage/Enceladus in the Form of a Pair of Halo Stellar Overdensities

Autor: Hélio D. Perottoni, Guilherme Limberg, João A. S. Amarante, Silvia Rossi, Anna B. A. Queiroz, Rafael M. Santucci, Angeles Pérez-Villegas, Cristina Chiappini

In the first billion years after its formation, the Galaxy underwent several mergers with dwarf satellites of various masses. The debris of Gaia-Sausage/Enceladus (GSE), the galaxy responsible for the last significant merger of the Milky Way, dominat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff457d320eb87b8558b0a7cf86ee208a
http://arxiv.org/abs/2207.11869

A new sample of southern radio galaxies: host-galaxy masses and star-formation rates

Autor: L. J. de Melo de Azevedo, L. Katena, Antonio Kanaan, Paula Coelho, M. V. Costa-Duarte, F. Urrutia-Viscarra, A. Schnorr Müller, Irapuan Rodrigues, Erik V.R. de Lima, Angela Krabbe, David Alexander Kann, M. Vika, Carlos Gabriel Escudero, S. Alencar, Dennis Zaritsky, Nina S. T. Hirata, G. Damke, Fernando Roig, H. Farías, Leonardo A. Almeida, Anthony H. Gonzalez, D. Brito-Silva, Favio Raúl Faifer, F. Almeida-Fernandes, Luca Izzo, H. J. Rocha Pinto, O. L. Dors, W. A. Santos, M. Jaque Arancibia, Rafael M. Santucci, Pieter Westera, Yara L. Jaffé, Bruno Quint, Kanak Saha, R. S. Nemmen, Roberto K. Saito, L. A. Gutiérrez-Soto, Silvia Rossi, Leandro Alberto Sesto, Lilianne Mariko Izuti Nakazono, Ana L. Chies-Santos, L. Azanha, C. Labayru, Christina C. Thöne, William Schoenell, C. Lima-Dias, A. de Ugarte Postigo, S. S. Eikenberry, Carlos A. Fernandes, E. A. Hartmann, R. A. Ortega-Minakata, L. Sampedro, Ramachrisna Teixeira, P. Amram, Daniela Lazzaro, N. Muñoz-Elgueta, R. Lopes de Oliveira, C. H. Veiga, E. Pattaro, Teresa Santos-Silva, C. B. Pereira, S. V. Werner, R. Cid Fernandes, F. R. Herpich, Alexandre S. Oliveira, Simone Daflon, R. S. de Souza, J. S. Alcaniz, Analia Viviana Smith Castelli, Beatriz B. Siffert, D. F. De Paula, C. Bonatto, H. D. Perottoni, Marina Trevisan, Y. Jimenez-Teja, Eduardo S. Pereira, L. Sodré, Timothy C. Beers, M. Borges Fernandes, A. Werle, M. L. Buzzo, C. Mendes de Oliveira, M. Castejon, Vinicius M. Placco, Richard L. Donnerstein, Javier Alonso-García, Roderik Overzier, S. Bonoli, J. A. Hernandez-Jimenez, C. Queiroz, Beatriz Luci Fernandes, Rodolfo H. Barbá, R. Monteiro-Oliveira, Thiago S. Gonçalves, R. Silva, Alvaro Alvarez-Candal, Arianna Cortesi, G. Fabiano de Souza, Karín Menéndez-Delmestre, Eduardo S. Cypriano, T. Ribeiro, J. Caffer, Zach Cano, Martin Makler, S. Fontes, H. S. Xavier, C. L. Barbosa, V. Jatenco-Pereira, K. G. Diem, Amanda R. Lopes, M. L. L. Dantas, R. C. Thom de Souza, A. Galarza, Jane Gregorio-Hetem, J. L. Nilo Castellón, A. Z. Vitorelli, D. Ortíz, R. de Menezes, Denise R. Gonçalves, Reginaldo Bezerra dos Santos, Jordi Miralda-Escudé, J. D. Hernández-Fernández, R. A. Dupke, Alberto Molino, R. Magalhães, L. Riguccini, A. Campillay, Ribamar R. R. Reis, Leandro Kerber, Fabricio Ferrari, G. B. Lima Neto, Pedro H. Bernardinelli, Stavros Akras, V. Branco, Devin D. Whitten, Luis Raul Weber Abramo, P. M. Novais, Antonio D. Montero-Dorta, S. Torres-Flores, Eduardo Telles, J. M. Carvano, C. E. Barbosa, R. de la Reza, Paulo A. A. Lopes, Alessandro Ederoclite

Publikováno v: Monthly Notices of the Royal Astronomical Society. 489:3403-3411

In this study we define a new sample of distant powerful radio galaxies in order to study their host-galaxy properties and provide targets for future observations of HI absorption with new radio telescopes and to understand the fuelling and feedback

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0680faa842ecd7e1661b26d0f27e1b6
https://doi.org/10.1093/mnras/stz2371

Reinventing the Aristarchus method

Autor: Ivo A. Marques, Lucas V. Freitas, Rafael M. Santucci

Publikováno v: Revista Brasileira de Ensino de Física, Volume: 43, Article number: e20210062, Published: 03 MAY 2021
Revista Brasileira de Ensino de Física v.43 2021
Revista Brasileira de Ensino de Física
Sociedade Brasileira de Física (SBF)
instacron:SBF
Revista Brasileira de Ensino de Física, Vol 43 (2021)

O matemático e astrônomo grego Aristarco de Samos, século III a.C., foi a primeira pessoa a sistematizar um método para estimar distâncias e tamanhos relativos entre Terra, Sol e Lua. Ele também foi o primeiro a propor que a Terra gira em torno

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e76e1de13d6351244f2a3ef2aea173e
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172021000100441&lng=en&tlng=en