Zobrazeno 1 - 10
of 6 120
pro vyhledávání: '"Thomas, A. F."'
Autor:
Khalil, Y. R., Famaey, B., Monari, G., Bernet, M., Siebert, A., Ibata, R., Thomas, G. F., Ramos, P., Antoja, T., Li, C., Rozier, S., Romero-Gómez, M.
We provide a purely dynamical global map of the non-axisymmetric structure of the Milky Way disk. For this, we exploit the information contained within the in-plane motions of disk stars from Gaia DR3 to adjust a model of the Galactic potential, incl
Externí odkaz:
http://arxiv.org/abs/2411.12800
Autor:
Arroyo-Polonio, José María, Battaglia, Giuseppina, Thomas, Guillaume F., Pascale, Raffaele, Tolstoy, Eline, Nipoti, Carlo
Aims. Recently, both the presence of multiple stellar chemo-kinematic components and rotation in the Sculptor dwarf spheroidal galaxy have been put into question. Therefore, we re-examine the chemo-kinematic properties of this galaxy making use of th
Externí odkaz:
http://arxiv.org/abs/2411.07283
Autor:
Viswanathan, Akshara, Byström, Amanda, Starkenburg, Else, Foppen, Anne, Straat, Jill, Montelius, Martin, Sestito, Federico, Venn, Kim A., Navarrete, Camila, Matsuno, Tadafumi, Martin, Nicolas F., Thomas, Guillaume F., Ardern-Arentsen, Anke, Battaglia, Giuseppina, Fouesneau, Morgan, Navarro, Julio, Vitali, Sara
Context: In the context of Galactic archaeology, the outer halo remains relatively unexplored with respect to its metallicity distribution, merger debris, and the abundance of known very/extremely metal-poor ([Fe/H]<-2.5) stars. Aim: We utilize the P
Externí odkaz:
http://arxiv.org/abs/2408.17250
Autor:
Thomas, Emma F., Ye, Mengbin, Angus, Simon D., Mathew, Tony J., Louis, Winnifred, Walsh, Liam, Ellery, Silas, Lizzio-Wilson, Morgana, McGarty, Craig
We are living in an age of protest. Although we have an excellent understanding of the factors that predict participation in protest, we understand little about the conditions that foster a sustained (versus transient) movement. How do interactions b
Externí odkaz:
http://arxiv.org/abs/2408.12795
Autor:
Foote, Hayden R., Besla, Gurtina, Garavito-Camargo, Nicolás, Patel, Ekta, Thomas, Guillaume F., Bonaca, Ana, Price-Whelan, Adrian M., Peter, Annika H. G., Zaritsky, Dennis, Conroy, Charlie
Stellar streams in the Milky Way are promising detectors of low-mass dark matter (DM) subhalos predicted by $\Lambda$CDM. Passing subhalos induce perturbations in streams that indicate the presence of the subhalos. Understanding how known DM-dominate
Externí odkaz:
http://arxiv.org/abs/2408.06415
Autor:
de La Vernhe, Isaure González Rivera, Hill, Vanessa, Kordopatis, Georges, Gran, Felipe, Fernández-Alvar, Emma, Ardern-Arentsen, Anke, Thomas, Guillaume F., Sestito, Federico, Navarrete, Camila, Martin, Nicolas F., Starkenburg, Else, Viswanathan, Akshara, Battaglia, Giuseppina, Venn, Kim A., Vitali, Sara
Through the chemodynamical characterisation of metal-poor stars, one can efficiently probe the early history of the Milky Way. We aim at decontaminating a sample of $\sim$ 3M giant stars with Gaia DR3 XP-based \textit{Pristine-Gaia} metallicities, to
Externí odkaz:
http://arxiv.org/abs/2406.05728
Autor:
Viswanathan, Akshara, Yuan, Zhen, Ardern-Arentsen, Anke, Starkenburg, Else, Martin, Nicolas F., Youakim, Kris, Ibata, Rodrigo A., Sestito, Federico, Matsuno, Tadafumi, Prieto, Carlos Allende, Barwell, Freya, Bayer, Manuel, Doliva-Dolinsky, Amandine, Fernandez-Alvar, Emma, Anta, Pablo M. Galan-de, Jhass, Kiran, Longeard, Nicolas, Arroyo-Polonio, Jose Maria, Massana, Pol, Montelius, Martin, Rusterucci, Samuel, Santos, Judith, Thomas, Guillaume F., Vitali, Sara, Wu, Wenbo, Yarker, Paige, Ye, Xianhao, Aguado, David S., Gran, Felipe, Navarro, Julio
The Pristine-\textit{Gaia} synthetic catalogue provides reliable photometric metallicities for $\sim$30 million FGK stars using the Pristine survey model and Gaia XP spectra. We perform the first low-to-medium-resolution spectroscopic follow-up of br
Externí odkaz:
http://arxiv.org/abs/2405.13124
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.
Publikováno v:
A&A 690, A54 (2024)
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
Publikováno v:
Phys. Rev. Research 6, L022003 (2024)
A key observable in investigations into quantum systems are the $n$-body correlation functions, which provide a powerful tool for experimentally determining coherence and directly probing the many-body wavefunction. While the (bosonic) correlations o
Externí odkaz:
http://arxiv.org/abs/2312.03189