Publication
The dynamical and chemical evolution of dwarf spheroidal galaxies
Publications associées (56)
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We measure the rate of environmentally driven star formation quenching in galaxies at z similar to 1, using eleven massive () galaxy clusters spanning a redshift range 1.0 < z < 1.4 from the GOGREEN sample. We identify three different types of transition g ...
OXFORD UNIV PRESS2021New constraints on the mass of fermionic dark matter from dwarf spheroidal galaxies
Alexey Boyarsky, Diego Blas Temino, Kyrylo Bondarenko
Dwarf spheroidal galaxies are excellent systems to probe the nature of fermionic dark matter due to their high observed dark matter phase-space density. In this work, we review, revise, and improve upon previous phase-space considerations to obtain lower b ...
OXFORD UNIV PRESS2021The chemical evolution of the dwarf spheroidal galaxy Sextans
Pascale Jablonka, Pierre North, Carmela Lardo, Romain Ely Roland Lucchesi, Romaine Theler
We present our analysis of the FLAMES dataset targeting the central 25 ' region of the Sextans dwarf spheroidal galaxy (dSph). This dataset is the third major part of the high-resolution spectroscopic section of the ESO large program 171.B-0588(A) obtained ...
EDP SCIENCES S A2020Kinematic and metallicity properties of the Aquarius dwarf galaxy from FORS2 MXU spectroscopy
Context. Dwarf galaxies found in isolation in the Local Group (LG) are unlikely to have interacted with the large LG spirals, and therefore environmental effects such as tidal and ram-pressure stripping should not be the main drivers of their evolution. Ai ...
EDP SCIENCES S A2020The Tucana dwarf spheroidal galaxy: not such a massive failure after all
Context. Isolated local group (LG) dwarf galaxies have evolved most or all of their life unaffected by interactions with the large LG spirals and therefore offer the opportunity to learn about the intrinsic characteristics of this class of objects. Aims. O ...
2020Molecular gas in two companion cluster galaxies at z=1.2
Gianluca Castignani, Anand Stéphane Raichoor
Context. Probing both star formation history and evolution of distant cluster galaxies is essential to evaluate the effect of dense environment on shaping the galaxy properties we observe today. Aims. We investigate the effect of cluster environment on the ...
EDP SCIENCES S A2018The impact of cored density profiles on the observable quantities of dwarf spheroidal galaxies
Yves Revaz, David Richard Harvey, Loïc Hausammann
We modify the chemo-dynamical code GEAR to simulate the impact of self-interacting dark matter (SIDM) on the observable quantities of 19 low-mass dwarf galaxies with a variety star-forming properties. We employ a relatively high, velocity independent cross ...
OXFORD UNIV PRESS2018The formation of the Milky Way halo and its dwarf satellites; a NLTE-1D abundance analysis II. Early chemical enrichment
Pascale Jablonka, Pierre North
We present the non-local thermodynamic equilibrium (NLTE) abundances of up to 10 chemical species in a sample of 59 very metal-poor (VMP, -4
Edp Sciences S A2017Population gradient in the Sextans dSph: comprehensive mapping of a dwarf galaxy by Suprime-Cam
We present the deep and wide V and I-c photometry of the Sextans dwarf spheroidal galaxy (dSph) taken by the Suprime-Cam imager on the Subaru Telescope, which extends out to the tidal radius. The colour-magnitude diagram (CMD) reaches two magnitudes below ...
Oxford Univ Press2017[C II] emission in z similar to 6 strongly lensed, star-forming galaxies
Jean-Paul Richard Kneib, Benjamin Yvan Alexandre Clement, Mathilde Jauzac, Johan Richard
The far-infrared fine-structure line [C II] at 1900.5 GHz is known to be one of the brightest cooling lines in local galaxies, and therefore it has been suggested to be an efficient tracer for star formation in very high redshift galaxies. However, recent ...
Oxford Univ Press2016