Zobrazeno 1 - 10
of 558
pro vyhledávání: '"Pérez-Villegas, A."'
Autor:
Parisi, M. C., Oliveira, R. A. P., Angelo, M., Dias, B., Maia, F., Saroon, S., Feinstein, C., Santos Jr., J. F. C., Bica, E., Ferreira, B. Pereira Lima, Fernández-Trincado, J. G., Westera, P., Minniti, D., Garro, E. R., Santrich, O. J. Katime, De Bortoli, B., Souza, S., Kerber, L., Pérez-Villegas, A.
The structure of the Small Magellanic Cloud (SMC) outside of its main body is characterised by tidal branches resulting from its interactions mainly with the Large Magellanic Cloud (LMC). Characterising the stellar populations in these tidal componen
Externí odkaz:
http://arxiv.org/abs/2312.09756
Autor:
Moreno-Hilario, Elizabeth, Martinez-Medina, Luis A., Li, Hui, Souza, Stefano O., Pérez-Villegas, Angeles
Dwarf galaxies are known to exhibit an unusual richness in numbers of globular clusters (GCs), property quantified by the specific frequency ($S_N$), which is high for dwarf and giant elliptical galaxies, but with a minimum for intermediate-mass gala
Externí odkaz:
http://arxiv.org/abs/2310.17396
Autor:
Borbolato, Lais, Perottoni, Hélio D., Rossi, Silvia, Limberg, Guilherme, Pérez-Villegas, Angeles, Anders, Friedrich, Antoja, Teresa, Laporte, Chervin F. P., Rocha-Pinto, Helio J., Santucci, Rafael M.
We explore the kinematic and chemical properties of Monoceros stellar overdensity by combining data from 2MASS, WISE, APOGEE, and $\text{Gaia}$. Monoceros is a structure located towards the Galactic anticenter and close to the disk. We identified tha
Externí odkaz:
http://arxiv.org/abs/2309.15321
Autor:
Oliveira, R. A. P., Maia, F. F. S., Barbuy, B., Dias, B., Santos Jr., J. F. C., Souza, S. O., Kerber, L. O., Bica, E., Sanmartim, D., Quint, B., Fraga, L., Armond, T., Minniti, D., Parisi, M. C., Santrich, O. J. Katime, Angelo, M. S., Pérez-Villegas, A., De Bórtoli, B. J.
The formation scenario of the Magellanic Bridge during an encounter between the Large and Small Magellanic Clouds $\sim200\,$Myr ago, as proposed by $N$-body models, would be imprinted in the chemical enrichment and kinematics of its stars, and sites
Externí odkaz:
http://arxiv.org/abs/2306.05503
Autor:
Fernández-Trincado, J. G., Zamora, O., García-Hernández, D. A., Souto, Diogo, Dell’Agli, F., Schiavon, R. P., Geisler, D., Tang, B., Villanova, S., Hasselquist, Sten, Mennickent, R. E., Cunha, Katia, Shetrone, M., Prieto, Carlos Allende, Vieira, K., Zasowski, G., Sobeck, J., Hayes, C. R., Majewski, S. R., Placco, V. M., Beers, T. C., Schleicher, D. R. G., Robin, A. C., Mészáros, Sz., Masseron, T., Pérez, Ana E. García, Anders, F., Meza, A., Alves-Brito, A., Carrera, R., Minniti, D., Lane, R. R., Fernández-Alvar, E., Moreno, E., Pichardo, B., Pérez-Villegas, A., Schultheis, M., Roman-Lopes, A., Fuentes, C. E., Nitschelm, C., Harding, P., Bizyaev, D., Pan, K., Oravetz, D., Simmons, A., Ivans, Inese I., Blanco-Cuaresma, S., Hernández, J., Alonso-García, J., Valenzuela, O., Chanamé, J.
We report the peculiar chemical abundance patterns of 11 atypical Milky Way (MW) field red giant stars observed by the Apache Point Observatory Galactic Evolution Experiment (APOGEE). These atypical giants exhibit strong Al and N enhancements accompa
Externí odkaz:
http://hdl.handle.net/10150/625816
http://arizona.openrepository.com/arizona/handle/10150/625816
http://arizona.openrepository.com/arizona/handle/10150/625816
Autor:
Abuchaim, Yuri, Perottoni, Hélio D., Rossi, Silvia, Limberg, Guilherme, Pérez-Villegas, Angeles, Santucci, Rafael M., Placco, Vinicius M., Sales-Silva, João V., Anders, Friedrich, Rocha-Pinto, Helio J.
Publikováno v:
The Astrophysical Journal, Volume 949, Number 2, page 48, 2023
We present a chemodynamical study of the Triangulum-Andromeda overdensity (TriAnd) employing a sample of 31 candidate stars observed with the GRACES high-resolution ($R$=40,000) spectrograph at the Gemini North (8.1 m) telescope. TriAnd is a stellar
Externí odkaz:
http://arxiv.org/abs/2304.00156
Autor:
Queiroz, Anna B. A., Anders, Friedrich, Chiappini, Cristina, Khalatyan, Arman, Santiago, Basilio X., Nepal, Samir, Steinmetz, Matthias, Gallart, Carme, Valentini, Marica, Ponte, Marina Dal, Barbuy, Beatriz, Pérez-Villegas, Angeles, Masseron, Thomas, Fernández-Trincado, José G., Khoperskov, Sergey, Minchev, Ivan, Fernández-Alvar, Emma, Lane, Richard R., Nitschelm, Christian
Publikováno v:
A&A 673, A155 (2023)
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 give us comprehensive information about the Milky Way. Usin
Externí odkaz:
http://arxiv.org/abs/2303.09926
Autor:
Souza, Stefano O., Ernandes, Heitor, Valentini, Marica, Barbuy, Beatriz, Chiappini, Cristina, Pérez-Villegas, Angeles, Ortolani, Sergio, Friaça, Amâncio C. S., Queiroz, Anna B. A., Bica, Eduardo
Publikováno v:
A&A 671, A45 (2023)
The information on Galactic assembly time is imprinted on the chemodynamics of globular clusters. This makes them important probes that help us to understand the formation and evolution of the Milky Way. Discerning between in-situ and ex-situ origin
Externí odkaz:
http://arxiv.org/abs/2301.05227
Autor:
Rodríguez, M. Jimena, Feinstein, C., Baume, G., Dias, B., Maia, F. S. M., Santos Jr., J. F. C., Kerber, L., Minniti, D., Pérez-Villegas, A., De Bórtoli, B., Parisi, M. C., Oliveira, R. A. P.
We present a study of the internal structure of 82 star clusters located at the outer regions of the Large Magellanic Cloud and the Small Magellanic Cloud using data of the VISCACHA Survey. Through the construction of the minimum spanning tree, which
Externí odkaz:
http://arxiv.org/abs/2212.09685
Autor:
Limberg, Guilherme, Queiroz, Anna B. A., Perottoni, Hélio D., Rossi, Silvia, Amarante, João A. S., Santucci, Rafael M., Chiappini, Cristina, Pérez-Villegas, Angeles, Lee, Young Sun
In this work, we study the phase-space and chemical properties of Sagittarius (Sgr) stream, the tidal tails produced by the ongoing destruction of Sgr dwarf spheroidal (dSph) galaxy, focusing on its very metal-poor (VMP; $\rm[Fe/H] < -2$) content. We
Externí odkaz:
http://arxiv.org/abs/2212.08249