output
19932026
Showing 2017 · astro-ph.GAShow all

124 papers · 2 filters

astro-ph.GA2017★ 5 cited

Galaxy Evolution in the Cluster Abell 85: New Insights from the Dwarf Population

Rebecca Habas, Dario Fadda, Francine R. Marleau +2

We present the first results of a new spectroscopic survey of the cluster Abell 85 targeting 1466 candidate cluster members within the central 1 deg of the cluster and ha…

astro-ph.GA2017★ 13 cited

The ESO's VLT Type Ia supernova spectral set of the final two years of SNLS

C. Balland, F. Cellier-Holzem, C. Lidman +24

We aim to present 70 spectra of 68 new high-redshift type Ia supernovae (SNeIa) measured at ESO's VLT during the final two years of operation (2006-2008) of the Supernova Legacy Su…

astro-ph.GA2017★ 87 cited

Deep learning for galaxy surface brightness profile fitting

D. Tuccillo, M. Huertas-Company, E. Decencière +3

Numerous ongoing and future large area surveys (e.g. DES, EUCLID, LSST, WFIRST), will increase by several orders of magnitude the volume of data that can be exploited for galaxy mo…

astro-ph.GA2017★ 69 cited

The TOP-SCOPE survey of Planck Galactic Cold Clumps: Survey overview and results of an exemplar source, PGCC G26.53+0.17

Tie Liu, Kee-Tae Kim, Mika Juvela +11

The low dust temperatures (<14 K) of Planck Galactic Cold Clumps (PGCCs) make them ideal targets to probe the initial conditions and very early phase of star formation. TOP-SCOPE i…

astro-ph.GA2017★ 31 cited

Cosmic CARNage I: on the calibration of galaxy formation models

Alexander Knebe, Frazer R. Pearce, Violeta Gonzalez-Perez +31

We present a comparison of nine galaxy formation models, eight semi-analytical and one halo occupation distribution model, run on the same underlying cold dark matter simulation (c…

astro-ph.GA2017★ 82 cited

Escape of ionizing radiation from high redshift dwarf galaxies: role of AGN feedback

Maxime Trebitsch, Marta Volonteri, Yohan Dubois +1

While low mass, star forming galaxies are often considered as the primary driver of reionization, their actual contribution to the cosmic ultraviolet background is still uncertain,…

astro-ph.GA2017★ 78 cited

First detection of interstellar S2H

Asunción Fuente, Javier R. Goicoechea, Jerome Pety +11

We present the first detection of gas phase S2H in the Horsehead, a moderately UV-irradiated nebula. This confirms the presence of doubly sulfuretted species in the interstellar me…

astro-ph.GA2017★ 13 cited

Exploring the inner parsecs of Active Galactic Nuclei using near-infrared high resolution polarimetric simulations with MontAGN

Lucas Grosset, Daniel Rouan, Damien Gratadour +4

Aims: In this paper, we aim to constrain the properties of dust structures in the central first parsecs of Active Galactic Nuclei (AGN). Our goal is to study the required optical d…

astro-ph.GA2017★ 14 cited

Identifying the progenitors of present-day early-type galaxies in observational surveys: correcting `progenitor bias' using the Horizon-AGN simulation

G. Martin, S. Kaviraj, J. E. G. Devriendt +3

As endpoints of the hierarchical mass-assembly process, the stellar populations of local early-type galaxies encode the assembly history of galaxies over cosmic time. We use Horizo…

astro-ph.GA2017★ 16 cited

Transient spiral arms from far out of equilibrium gravitational evolution

David Benhaiem, Michael Joyce, Francesco Sylos Labini

We describe how a simple class of out of equilibrium, rotating and asymmetrical mass distributions evolve under their self-gravity to produce a quasi-planar spiral structure surrou…

astro-ph.GA2017★ 76 cited

Conditions for Optimal Growth of Black Hole Seeds

Fabio Pacucci, Priyamvada Natarajan, Marta Volonteri +2

Super-massive black holes weighing up to are in place by , when the age of the Universe is . This implies a…

astro-ph.GA2017★ 15 cited

H emission from non-stationary magnetized bow shocks

L. N. Tram, P. Lesaffre, S. Cabrit +2

When a fast moving star or a protostellar jet hits an interstellar cloud, the surrounding gas gets heated and illuminated: a bow shock is born which delineates the wake of the impa…

astro-ph.GA2017★ 17 cited

Revisiting the bulge-halo conspiracy II: Towards explaining its puzzling dependence on redshift

Francesco Shankar, Alessandro Sonnenfeld, Philip Grylls +8

We carry out a systematic investigation of the total mass density profile of massive (Mstar~3e11 Msun) early-type galaxies and its dependence on redshift, specifically in the range…

astro-ph.GA2017

Inefficient jet-induced star formation in Centaurus A: High resolution ALMA observations of the northern filaments

Quentin Salomé, Philippe Salomé, Marc-Antoine Miville-Deschênes +2

NGC 5128 is one of the best targets to study AGN-feedback in the local Universe. At 13.5 kpc from the galaxy, optical filaments with recent star formation lie along the radio-jet d…

astro-ph.GA2017★ 28 cited

The Close AGN Reference Survey (CARS): Mrk 1018 halts dimming and experiences strong short-term variability

M. Krumpe, B. Husemann, G. R. Tremblay +12

After changing optical AGN type from 1.9 to 1 in 1984, the AGN Mrk 1018 recently reverted back to its type 1.9 state. Our ongoing monitoring now reveals that the AGN has halted its…

astro-ph.GA2017★ 55 cited

Correlation Between the Total Gravitating Mass of Groups and Clusters and the Supermassive Black Hole Mass of Brightest Galaxies

Akos Bogdan, Lorenzo Lovisari, Marta Volonteri +1

Supermassive black holes (BHs) residing in the brightest cluster galaxies are over-massive relative to the stellar bulge mass or central stellar velocity dispersion of their host g…

astro-ph.GA2017★ 379 cited

Improving galaxy morphologies for SDSS with Deep Learning

H. Domínguez Sánchez, M. Huertas-Company, M. Bernardi +2

We present a morphological catalogue for 670,000 galaxies in the Sloan Digital Sky Survey in two flavours: T-Type, related to the Hubble sequence, and Galaxy Zoo 2 (GZ2 here…

astro-ph.GA2017★ 52 cited

SPLASH-SXDF Multi-wavelength Photometric Catalog

Vihang Mehta, Claudia Scarlata, Peter Capak +19

We present a multi-wavelength catalog in the Subaru-XMM Deep Field (SXDF) as part of the Spitzer Large Area Survey with Hyper-Suprime-Cam (SPLASH). We include the newly acquired op…

astro-ph.GA2017★ 109 cited

The Sloan Lens ACS Survey. XIII. Discovery of 40 New Galaxy-Scale Strong Lenses

Yiping Shu, Joel R. Brownstein, Adam S. Bolton +8

We present the full sample of 118 galaxy-scale strong-lens candidates in the Sloan Lens ACS (SLACS) Survey for the Masses (S4TM) Survey, which are spectroscopically selected from t…

astro-ph.GA2017★ 21 cited

Spectroscopic confirmation and velocity dispersions for twenty Planck galaxy clusters at 0.16<z<0.78

S. Amodeo, S. Mei, S. A. Stanford +8

We present Gemini and Keck spectroscopic redshifts and velocity dispersions for twenty clusters detected via the Sunyaev-Zel'dovich (SZ) effect by the Planck space mission, with es…

astro-ph.GA2017★ 32 cited

What the Milky Way bulge reveals about the initial metallicity gradients in the disc

F. Fragkoudi, P. Di Matteo, M. Haywood +5

We examine the metallicity trends in the Milky Way (MW) bulge - using APOGEE DR13 data - and explore their origin by comparing two N-body models of isolated galaxies which develop…

astro-ph.GA2017★ 51 cited

Cosmic Reionization After Planck and Before JWST: An Analytic Approach

Piero Madau

The reionization of cosmic hydrogen marks a critical juncture in the history of structure formation in the universe. Here we present a new formulation of the standard reionization…

astro-ph.GA2017★ 37 cited

Clustering the Orion B giant molecular cloud based on its molecular emission

Emeric Bron, Chloé Daudon, Jérôme Pety +12

Previous attempts at segmenting molecular line maps of molecular clouds have focused on using position-position-velocity data cubes of a single line to separate the spatial compone…

astro-ph.GA2017★ 79 cited

AGN feedback in dwarf galaxies?

Gohar Dashyan, Joseph Silk, Gary A. Mamon +2

Dwarf galaxy anomalies, such as their abundance and cusp-core problems, remain a prime challenge in our understanding of galaxy formation. The inclusion of baryonic physics could p…