Université de Strasbourg

output

19932026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2019 · astro-ph.GAShow all

66 papers · 2 filters

astro-ph.GA2019★ 20 cited

Spectroscopy and polarimetry of the gravitationally lensed quasar SDSS J1004+4112 with the 6m SAO RAS telescope

L. Č. Popović, V. L. Afanasiev, A. Moiseev +5

We present new spectroscopic and polarimetric observations of the gravitational lens SDSS J1004+4112 taken with the 6m telescope of the Special Astrophysical Observatory (SAO, Russ…

astro-ph.GA2019★ 3 cited

Spatial segregation of massive clusters in dwarf galaxies

Bruce G. Elmegreen, A. Adamo, M. Boquien +14

The relative average minimum projected separations of star clusters in the Legacy ExtraGalactic UV Survey (LEGUS) and in tidal dwarfs around the interacting galaxy NGC 5291 are det…

astro-ph.GA2019★ 36 cited

A SkyMapper view of the Large Magellanic Cloud: The dynamics of stellar populations

Zhen Wan, Magda Guglielmo, Geraint F. Lewis +2

We present the first SkyMapper stellar population analysis of the Large Magellanic Cloud (hereafter LMC),including the identification of 3578 candidate Carbon Stars through their e…

astro-ph.GA2019★ 83 cited

The Hi-GAL catalogue of dusty filamentary structures in the Galactic Plane

E. Schisano, S. Molinari, D. Elia +27

The recent data collected by {\it Herschel} have confirmed that interstellar structures with filamentary shape are ubiquitously present in the Milky Way. Filaments are thought to b…

astro-ph.GA2019★ 13 cited

Hunting ghosts: the iconic stellar stream(s) around NG5907 under scrutiny

Oliver Müller, Ana Vudragović, Michal Bílek

Stellar streams are regarded as crucial objects to test galaxy formation models, with their morphology tracing the underlying potentials and their occurrence tracking the assembly…

astro-ph.GA2019★ 92 cited

The Pristine survey X: a large population of low-metallicity stars permeates the Galactic disk

Federico Sestito, Nicolas F. Martin, Else Starkenburg +26

The orbits of the least chemically enriched stars open a window on the formation of our Galaxy when it was still in its infancy. The common picture is that these low-metallicity st…

astro-ph.GA2019★ 57 cited

A detailed study of Andromeda XIX, an extreme local analogue of ultra diffuse galaxies

Michelle L. M. Collins, Erik J. Tollerud, R. Michael Rich +5

With a central surface brightness of $μ_{0} = 29.3$ mag. per sq. arcsec, and half-light radius of $r_{half} = 3. 1_{- 1.1}^{+ 0.9}$ ~kpc, Andromeda XIX (And XIX) is an extremely diffuse…

astro-ph.GA2019★ 14 cited

Evidence of dust grain evolution from extinction mapping in the IC 63 photodissociation region

Dries Van De Putte, Karl D. Gordon, Julia Roman-Duval +5

Photodissociation regions (PDRs) are parts of the ISM consisting of predominantly neutral gas, located at the interface between H II regions and molecular clouds. The physical cond…

astro-ph.GA2019★ 74 cited

The Canada-France Imaging Survey: Reconstructing the Milky Way Star Formation History from its White Dwarf Population

Nicholas J. Fantin, Patrick Côté, Alan W. McConnachie +15

As the remnants of stars with initial masses $≲$ 8 M $_{⊙}$ , white dwarfs contain valuable information on the formation histories of stellar populations. In this paper, w…

astro-ph.GA2019★ 24 cited

Deciphering the radio-star formation correlation on kpc-scales I. Adaptive kernel smoothing experiments

B. Vollmer, M. Soida, R. Beck +1

(abridged) Within nearby galaxies, variations in the radio-FIR correlation have been observed, mainly because the cosmic ray electrons migrate before they lose their energy via syn…

astro-ph.GA2019★ 33 cited

Phase-space correlation in stellar streams of the Milky Way halo: The clash of Kshir and GD-1

Khyati Malhan, Rodrigo A. Ibata, Raymond G. Carlberg +3

We report the discovery of a 70-degree long stellar stream in the Milky Way halo, which criss-crosses the well known "GD-1" stream. We show that this new stellar structure ("Kshir"…

astro-ph.GA2019★ 86 cited

Probing the merger history of red early-type galaxies with their faint stellar substructures

B. Mancillas, P. -A. Duc, F. Combes +4

Several deep observations such as those carried out at the Canada-France-Hawaii Telescope (CFHT) have revealed prominent Low Surface Brightness (LSB) fine structures that change th…

astro-ph.GA2019★ 8 cited

Discovery of a large HI ring around the quiescent galaxy AGC 203001

Omkar Bait, Sushma Kurapati, Pierre-Alain Duc +4

Here we report the discovery with the Giant Metrewave Radio Telescope of an extremely large ( $\sim$ 115 kpc in diameter) HI ring off-centered from a massive quenched galaxy, AGC 203…

astro-ph.GA2019★ 50 cited

CHANG-ES XV: Large-scale magnetic field reversals in the radio halo of NGC 4631

Silvia Carolina Mora-Partiarroyo, Marita Krause, Aritra Basu +13

NGC 4631 is an interacting galaxy which exhibits one of the largest gaseous halos observed among edge-on galaxies. We aim to examine the synchrotron and polarization properties of…

astro-ph.GA2019★ 29 cited

CHANG-ES XIV: Cosmic-ray propagation and magnetic field strengths in the radio halo of NGC 4631

Silvia Carolina Mora-Partiarroyo, Marita Krause, Aritra Basu +13

NGC 4631 is an interacting galaxy that exhibits one of the largest, gaseous halos observed among edge-on galaxies. We aim to examine the synchrotron and cosmic-ray propagation prop…

astro-ph.GA2019★ 28 cited

The Pristine survey -- VII. A cleaner view of the Galactic outer halo using blue horizontal branch stars

Else Starkenburg, Kris Youakim, Nicolas Martin +11

We use the Pristine survey CaHK narrow-band photometry, combined with the SDSS ugr photometry, to provide a cleaner sample of blue horizontal branch stars in the Galactic halo out…

astro-ph.GA2019★ 84 cited

The Pristine Inner Galaxy Survey (PIGS) I: Tracing the kinematics of metal-poor stars in the Galactic bulge

Anke Arentsen, Else Starkenburg, Nicolas F. Martin +20

Our Galaxy is known to contain a central boxy/peanut-shaped bulge, yet the importance of a classical, pressure-supported component within the central part of the Milky Way is still…

astro-ph.GA2019★ 7 cited

Young stars raining through the Galactic Halo: the nature and orbit of Price-Whelan 1

M. Bellazzini, R. A. Ibata, N. Martin +3

We present radial velocities for five member stars of the recently discovered young (age= 100-150 Myr) stellar system Price-Whelan 1 (PW 1), that is located far away in the Galacti…

astro-ph.GA2019

Dwarfs or giants? Stellar metallicities and distances in the Canada-France-Imaging-Survey from $ug r i z G$ multi-band photometry

Guillaume F. Thomas, Nicholaas Annau, Alan McConnachie +19

We present a new fully data-driven algorithm that uses photometric data from the Canada-France-Imaging-Survey (CFIS; $u$ ), Pan-STARRS 1 (PS1; $g r i z$ ), and Gaia ( $G$ ) to discriminat…

astro-ph.GA2019★ 41 cited

Two major accretion epochs in M31 from two distinct populations of globular clusters

Dougal Mackey, Geraint F. Lewis, Brendon J. Brewer +12

Large galaxies grow through the accumulation of dwarf galaxies. In principle it is possible to trace this growth history using the properties of a galaxy's stellar halo. Previous i…

astro-ph.GA2019★ 48 cited

Newly discovered dwarf galaxies in the MATLAS low density fields

Rebecca Habas, Francine R. Marleau, Pierre-Alain Duc +16

We present the photometric properties of 2210 newly identified dwarf galaxy candidates in the MATLAS fields. The Mass Assembly of early Type gaLAxies with their fine Structures (MA…

astro-ph.GA2019★ 46 cited

Comparing the Quenching Times of Faint M31 and Milky Way Satellite Galaxies

Daniel R. Weisz, Nicolas F. Martin, Andrew E. Dolphin +8

We present the star formation histories (SFHs) of 20 faint M31 satellites ( $- 12 ≲ M_{V} ≲ - 6$ ) that were measured by modeling sub-horizontal branch (HB) depth color-mag…