Zobrazeno 1 - 10
of 4 420
pro vyhledávání: '"†Nicolas, F."'
Autor:
Vitali, Sara, Rojas-Arriagada, Alvaro, Jofré, Paula, Sestito, Federico, Povick, Joshua, Hill, Vanessa, Fernández-Alvar, Emma, Ardern-Arentsen, Anke, Jablonka, Pascale, Martin, Nicolas F., Starkenburg, Else, Aguado, David
The Sagittarius dwarf spheroidal galaxy (Sgr dSph) is a satellite orbiting the Milky Way that has experienced multiple stripping events due to tidal interactions with our Galaxy. Its accretion history has led to a distinct stellar overdensity, which
Externí odkaz:
http://arxiv.org/abs/2412.06896
Autor:
Cherrey, Maxime, Bouché, Nicolas F., Zabl, Johannes, Schroetter, Ilane, Wendt, Martin, Langan, Ivanna, Schaye, Joop, Wisotzki, Lutz, Guo, Yucheng, Pessa, Ismael
The circumgalactic medium (CGM) is a key component needed to understand the physical processes governing the flows of gas around galaxies. Quantifying its evolution and its dependence on galaxy properties is particularly important for our understandi
Externí odkaz:
http://arxiv.org/abs/2412.04772
Autor:
Carlberg, Raymond G., Ibata, Rodrigo, Martin, Nicolas F., Starkenburg, Else, Aguado, David S., Malhan, Khyati, Venn, Kim
The C-19 star stream has the abundance characteristics of an unusually metal poor globular cluster but kinematically is uncharacteristically hot and wide for a cluster stream, having a line of sight velocity dispersion of 6 \kms\ and a 1-sigma width
Externí odkaz:
http://arxiv.org/abs/2410.22966
Publikováno v:
A&A 692, A30 (2024)
We provide an updated inference of the proper motion of M31 using the Gaia DR3 proper motions of bright stars from the disc of M31. By refining the motion of the quasar reference frame, and statistically accounting for the variations in the inferred
Externí odkaz:
http://arxiv.org/abs/2410.18180
Autor:
Dutta, Sayak, Muzahid, Sowgat, Schaye, Joop, Johnson, Sean, Bouché, Nicolas F., Chen, Hsiao-Wen, Cantalupo, Sebastiano
We present a study of OVI-bearing gas around 247 low-mass (median log(M*/Msun)~8.7) galaxies at low redshifts (0.1 < z < 0.7) using background quasars as part of the MUSE Quasar-fields Blind Emitters Survey (MUSEQuBES). We find that the average OVI c
Externí odkaz:
http://arxiv.org/abs/2409.15423
Autor:
Sestito, Federico, Fernandez-Alvar, Emma, Brooks, Rebecca, Olson, Emma, Carigi, Leticia, Jofre, Paula, Silva, Danielle de Brito, Eldridge, Camilla J. L., Vitali, Sara, Venn, Kim A., Hill, Vanessa, Ardern-Arentsen, Anke, Kordopatis, Georges, Martin, Nicolas F., Navarro, Julio F., Starkenburg, Else, Tissera, Patricia B., Jablonka, Pascale, Lardo, Carmela, Lucchesi, Romain, Buck, Tobias, Amayo, Alexia
We analyse high-resolution ESPaDOnS/CFHT spectra of 20 very metal-poor stars ([Fe/H]~$<-2.0$) in the solar neighbourhood (within $\sim2$ kpc) selected to be on planar orbits (with a maximum height of $\lesssim4$ kpc). Targets include 11 prograde and
Externí odkaz:
http://arxiv.org/abs/2409.13813
Autor:
Andersson, Eric P., Rey, Martin P., Pontzen, Andrew, Cadiou, Corentin, Agertz, Oscar, Read, Justin I., Martin, Nicolas F.
Interpretation of data from faint dwarf galaxies is made challenging by observations limited to only the brightest stars. We present a major improvement to tackle this challenge by undertaking zoomed cosmological simulations that resolve the evolutio
Externí odkaz:
http://arxiv.org/abs/2409.08073
Autor:
Mody, Prerak, Chaves-de-Plaza, Nicolas F., Rao, Chinmay, Astrenidou, Eleftheria, de Ridder, Mischa, Hoekstra, Nienke, Hildebrandt, Klaus, Staring, Marius
Publikováno v:
Machine.Learning.for.Biomedical.Imaging. 2 (2024)
Increased usage of automated tools like deep learning in medical image segmentation has alleviated the bottleneck of manual contouring. This has shifted manual labour to quality assessment (QA) of automated contours which involves detecting errors an
Externí odkaz:
http://arxiv.org/abs/2409.03470
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:
Pessa, Ismael, Wisotzki, Lutz, Urrutia, Tanya, Pharo, John, Augustin, Ramona, Bouché, Nicolas F., Feltre, Anna, Guo, Yucheng, Kozlova, Daria, Krajnovic, Davor, Kusakabe, Haruka, Leclercq, Floriane, Salas, Héctor, Schaye, Joop, Verhamme, Anne
Publikováno v:
A&A 691, A5 (2024)
We report the discovery of a rare Mg II $\lambda$$\lambda$ 2796, 2803 doublet emission halo around a star forming galaxy with $\log (M_\star$/M$_\odot) = 10.3 \pm 0.3$ at $z=0.737$ in deep (9.94 h) VLT/MUSE data from the MUSE-HUDF mosaic. While the c
Externí odkaz:
http://arxiv.org/abs/2408.16067