Zobrazeno 1 - 10
of 509
pro vyhledávání: '"Gallart C."'
Autor:
Braga, V. F., Monelli, M., Dall'Ora, M., Mullen, J. P., Molinaro, R., Marconi, M., Szabó, R., Gallart, C.
The \textit{Vera C. Rubin} Observatory will start operations in 2025. During the first two years, too few visits per target per band will be available, meaning that mean magnitude measurements of variable stars will not be precise and thus, standard
Externí odkaz:
http://arxiv.org/abs/2407.20813
Autor:
Carbajo-Hijarrubia, J., Casamiquela, L., Carrera, R., Balaguer-Núñez, L., Jordi, C., Anders, F., Gallart, C., Pancino, E., Drazdauskas, A., Stonkute, E., Tautvaišiene, G., Carrasco, J. M., Masana, E., Cantat-Gaudin, T., Blanco-Cuaresma, S.
Publikováno v:
A&A 687, A239 (2024)
Context. Open clusters provide valuable information on stellar nucleosynthesis and the chemical evolution of the Galactic disc, as their age and distances can be measured more precisely with photometry than for field stars. Aims. Our aim is to study
Externí odkaz:
http://arxiv.org/abs/2405.00110
Autor:
Thomas, G. F., Battaglia, G., Gran, F., Fernandez-Alvar, E., Tsantaki, M., Pancino, E., Hill, V., Kordopatis, G., Gallart, C., Turchi, A., Masseron, T.
The emergence of large spectroscopic surveys requires homogenising on the same scale the quantities they measure in order to increase their scientific legacy. We developed the SpectroTranslator, a data-driven deep neural network algorithm that can co
Externí odkaz:
http://arxiv.org/abs/2404.02578
Autor:
Gallart, C., Surot, F., Cassisi, S., Fernández-Alvar, E., Mirabal, D., Rivero, A., Ruiz-Lara, T., Santos-Torres, J., Aznar-Menargues, G., Battaglia, G., Queiroz, A. B., Monelli, M., Vasiliev, E., Chiappini, C., Helmi, A., Hill, V., Massari, D., Thomas, G. F.
Publikováno v:
A&A 687, A168 (2024)
The current major challenge to reconstruct the chronology of the Milky Way (MW) is the difficulty to derive precise stellar ages. CMD-fitting offers an alternative to individual age determinations to derive the star formation history (SFH). We presen
Externí odkaz:
http://arxiv.org/abs/2402.09399
Autor:
Taibi, S., Battaglia, G., Roth, M. M., Kamann, S., Iorio, G., Gallart, C., Leaman, R., Skillman, E. D., Kacharov, N., Beasley, M. A., Piña, P. E. Mancera, van de Ven, G.
Publikováno v:
A&A 689, A88 (2024)
The kinematics and chemical composition of stellar populations of different ages provide crucial information about the evolution of a galaxy. We aim to provide such information for IC 1613, an isolated, gas-rich, star-forming dwarf galaxy in the Loca
Externí odkaz:
http://arxiv.org/abs/2402.01631
Publikováno v:
A&A 668, L10 (2022)
We aim to determine unique features that characterise the past evolution of the progenitor of the Helmi streams through the analysis of star formation histories (SFHs). From the 5D {\it Gaia} EDR3 dataset, we extracted local samples of stars dominate
Externí odkaz:
http://arxiv.org/abs/2205.13810
Autor:
Massana, P., Ruiz-Lara, T., Noël, N. E. D., Gallart, C., Nidever, D. L., Choi, Y., Sakowska, J. D., Besla, G., Olsen, K. A. G., Monelli, M., Dorta, A., Stringfellow, G. S., Cassisi, S., Bernard, E. J., Zaritsky, D., Cioni, M. -R. L., Monachesi, A., van der Marel, R. P., de Boer, T. J. L., Walker, A. R.
We use the SMASH survey to obtain unprecedented deep photometry reaching down to the oldest main sequence turn-offs in the colour-magnitude diagrams (CMDs) of the Small Magellanic Cloud (SMC) and quantitatively derive its star formation history (SFH)
Externí odkaz:
http://arxiv.org/abs/2203.09523
Autor:
Tsantaki, M., Pancino, E., Marrese, P., Marinoni, S., Rainer, M., Sanna, N., Turchi, A., Randich, S., Gallart, C., Battaglia, G., Masseron, T.
Publikováno v:
A&A 659, A95 (2022)
In the present-day panorama of large spectroscopic surveys, the amount, diversity, and complexity of the available data continuously increase. We present a comprehensive catalogue, the Survey of Surveys (SoS), built by homogeneously merging the radia
Externí odkaz:
http://arxiv.org/abs/2110.09316
Autor:
Martínez-Vázquez, C. E., Monelli, M., Cassisi, S., Taibi, S., Gallart, C., Vivas, A. K., Walker, A. R., Martín-Ravelo, P., Zenteno, A., Battaglia, G., Bono, G., Calamida, A., Carollo, D., Cicuéndez, L., Fiorentino, G., Marconi, M., Salvadori, S., Balbinot, E., Bernard, E. J., Dall'Ora, M., Stetson, P. B.
We present a detailed study of the variable star population of Eridanus II (Eri II), an ultra-faint dwarf galaxy that lies close to the Milky Way virial radius. We analyze multi-epoch $g,r,i$ ground-based data from Goodman and the Dark Energy Camera,
Externí odkaz:
http://arxiv.org/abs/2109.01177
Autor:
Gallart, C., Monelli, M., Ruiz-Lara, T., Calamida, A., Cassisi, S., Cignoni, M., Anderson, J., Battaglia, G., Bermejo-Climent, J. R., Bernard, E. J., Martínez-Vázquez, C. E., Mayer, L., Salvadori, S., Monachesi, A., Navarro, J. F., Shen, S., Surot, F., Tosi, M., Bajaj, V., Strinfellow, G. S.
Eridanus II (EriII) is an ultra-faint dwarf (UFD) galaxy (M_V=-7.1) located at a distance close to the Milky Way virial radius. Early shallow color-magnitude diagrams (CMD) indicated that it possibly hosted an intermediate-age or even young stellar p
Externí odkaz:
http://arxiv.org/abs/2101.04464