9.9k citations · 53.9k across the 254 of their papers we have counts for
255 papers
Is a recently discovered HI cloud near M94 a starless dark matter halo?
Alejandro Benitez-Llambay, Julio F. Navarro
Observations with the Five-Hundred-Meter Aperture Spherical Telescope have revealed the presence of a marginally-resolved source of 21 cm emission from a location from th…
Are there any extragalactic high speed dark matter particles in the Solar neighborhood?
Isabel Santos-Santos, Nassim Bozorgnia, Azadeh Fattahi +1
We use the APOSTLE suite of cosmological hydrodynamical simulations of the Local Group to examine the high speed tail of the local dark matter velocity distribution in simulated Mi…
Small-scale stellar haloes: detecting low surface brightness features in the outskirts of Milky Way dwarf satellites
Jaclyn Jensen, Christian R. Hayes, Federico Sestito +5
Dwarf galaxies are valuable laboratories for dynamical studies related to dark matter and galaxy evolution, yet it is currently unknown just how physically extended their stellar c…
GHOST Commissioning Science Results II: a very metal-poor star witnessing the early Galactic assembly
Federico Sestito, Christian R. Hayes, Kim A. Venn +25
This study focuses on Pristine (hereafter P180956, ), a star selected from the Pristine Inner Galaxy Survey (PIGS), and followed-up…
The Pristine survey -- XXIII. Data Release 1 and an all-sky metallicity catalogue based on Gaia DR3 BP/RP spectro-photometry
Nicolas F. Martin, Else Starkenburg, Zhen Yuan +38
We used the spectro-photometric information of ~219 million stars from Gaia's DR3 to calculate synthetic, narrow-band, metallicity-sensitive CaHK magnitudes that mimic the observat…
Stars on the edge: Galactic tides and the outskirts of the Sculptor dwarf spheroidal
Federico Sestito, Joel Roediger, Julio F. Navarro +5
The formation of "stellar halos" in dwarf galaxies have been discussed in terms of early mergers or Galactic tides, although fluctuations in the gravitational potential due to stel…
Planes of satellites, no longer in tension with LCDM
Laura V. Sales, Julio F. Navarro
The arrangement of dwarf galaxies in a thin plane surrounding the Milky Way has been thought to contradict the prevailing cosmological model of cold dark matter in the Universe. Ne…
The extended "stellar halo" of the Ursa Minor dwarf galaxy
Federico Sestito, Daria Zaremba, Kim A. Venn +9
Stellar candidates in the Ursa Minor (UMi) dwarf galaxy have been found using a new Bayesian algorithm applied to \textit{Gaia} EDR3 data. Five of these targets are located in the…
Dark matter halo cores and the tidal survival of Milky Way satellites
Raphaël Errani, Julio F. Navarro, Jorge Peñarrubia +2
The cuspy central density profiles of cold dark matter (CDM) haloes make them highly resilient to disruption by tides. Self-interactions between dark matter particles, or the cycli…
Discovery of a new Local Group Dwarf Galaxy Candidate in UNIONS: Boötes V
Simon E. T. Smith, Jaclyn Jensen, Joel Roediger +12
We present the discovery of Boötes V, a new ultra-faint dwarf galaxy candidate. This satellite is detected as a resolved overdensity of stars during an ongoing search for new Local…
The Cosmic Hunt for Members in the Outskirts of Ultra Faint Dwarf Galaxies: Ursa Major I, Coma Berenices, and Boötes I
Fletcher Waller, Kim Venn, Federico Sestito +6
Gaia EDR3 data was used to identify potential members in the outskirts of three ultra faint dwarf (UFD) galaxies; Coma Berenices (> 2Rh), Ursa Major I ( 4Rh), and Boötes I ($…
The Tucana dwarf spheroidal: a distant backsplash galaxy of M31?
Isabel M. E. Santos-Santos, Julio F. Navarro, Alan McConnachie
We use the APOSTLE Local Group (LG) cosmological hydro-simulations to examine the properties of "backsplash" galaxies, i.e, dwarfs which were within the virial boundaries of the Mi…
Velocity-dependent J-factors for Milky Way dwarf spheroidal analogues in cosmological simulations
Keagan Blanchette, Erin Piccirillo, Nassim Bozorgnia +5
We study the impact of the dark matter velocity distribution modelling on signals from velocity-dependent dark matter annihilation in Milky Way dwarf spheroidal galaxies. Using the…
The cosmic UV background and the beginning and end of star formation in simulated field dwarf galaxies
Matthew Pereira-Wilson, Julio Navarro, Alejandro Benítez-Llambay +1
We use the APOSTLE cosmological simulations to examine the role of the cosmic UV background in regulating star formation (SF) in low-mass LCDM halos. In agreement with earlier work…
The diversity of rotation curves of simulated galaxies with cusps and cores
Finn A. Roper, Kyle A. Oman, Carlos S. Frenk +3
We use CDM cosmological hydrodynamical simulations to explore the kinematics of gaseous discs in late-type dwarf galaxies. We create high-resolution 21-cm 'observations' of simu…
The Pristine survey XVIII: C-19: Tidal debris of a dark matter-dominated globular cluster?
Raphaël Errani, Julio F. Navarro, Rodrigo Ibata +12
The recently discovered C-19 stellar stream is a collection of kinematically associated metal-poor stars in the halo of the Milky Way lacking an obvious progenitor. The stream span…
The Pristine survey -- XVII. The C-19 stream is dynamically hot and more extended than previously thought
Zhen Yuan, Nicolas F. Martin, Rodrigo A. Ibata +22
The C-19 stream is the most metal poor stellar system ever discovered, with a mean metallicity . Its low metallicity dispersion ( 0.18 at…
A stellar stream remnant of a globular cluster below the metallicity floor
Nicolas F. Martin, Kim A. Venn, David S. Aguado +23
Stellar ejecta gradually enrich the gas out of which subsequent stars form, making the least chemically enriched stellar systems direct fossils of structures formed in the early un…
The Pristine survey -- XVI. The metallicity of 26 stellar streams around the Milky Way detected with the STREAMFINDER in Gaia EDR3
Nicolas F. Martin, Rodrigo A. Ibata, Else Starkenburg +21
We use the photometric metallicities provided by the panoramic Pristine survey to study the veracity and derive the metallicities of the numerous stellar streams found by the appli…
The Pristine survey -- XV. A CFHT ESPaDOnS view on the Milky Way halo and disc populations
R. Lucchesi, C. Lardo, P. Jablonka +14
We present a one-dimensional, local thermodynamic equilibrium (1D-LTE) homogeneous analysis of 132 stars observed at high-resolution with ESPaDOnS. This represents the largest samp…
The Complexity of the Cetus Stream Unveiled from the Fusion of STREAMFINDER and StarGO
Zhen Yuan, Khyati Malhan, Federico Sestito +16
We combine the power of two stream-searching tools, STREAMFINDER and StarGO applied to the Gaia EDR3 data, to detect stellar debris belonging to the Cetus stream system that forms…
Galactic tides and the Crater II dwarf spheroidal: a challenge to LCDM?
Alexandra Borukhovetskaya, Julio F. Navarro, Raphael Errani +1
The unusually low velocity dispersion and large size of Crater II pose a challenge to our understanding of dwarf galaxies in the Lambda Cold Dark Matter (LCDM) cosmogony. The low v…
Structure and kinematics of tidally limited satellite galaxies in LCDM
Raphaël Errani, Julio F. Navarro, Rodrigo Ibata +1
We use N-body simulations to model the tidal evolution of dark matter-dominated dwarf spheroidal galaxies embedded in cuspy Navarro-Frenk-White subhalos. Tides gradually peel off s…
Satellite mass functions and the faint end of the galaxy mass-halo mass relation in LCDM
Isabel M. E. Santos-Santos, Laura V. Sales, Azadeh Fattahi +1
The abundance of the faintest galaxies provides insight into the nature of dark matter and the process of dwarf galaxy formation. In the LCDM scenario, low mass halos are so numero…