474 citations · 1.9k across the 57 of their papers we have counts for
31 papers · 1 filter
On the frequency, intensity and duration of starburst episodes triggered by galaxy interactions and mergers
P. Di Matteo, F. Bournaud, M. Martig +3
We investigate the intensity enhancement and the duration of starburst episodes, triggered by major galaxy interactions and mergers. To this aim, we analyze two large statistical d…
Dust content of core-collapse supernova hosts
A. -L. Melchior, F. Combes
We study a small sample of z=0.1-0.6 core-collapse supernova (CCSN) host galaxies. Continuum observations at 250GHz have been performed with MAMBO at the IRAM-30m telescope. None o…
Old stellar counter-rotating components in elliptical-spiral mergers: exploring the GalMer database
P. Di Matteo, F. Combes, A. -L. Melchior +1
We investigate, by means of numerical simulations, the kinematics of elliptical-spiral merger remnants. Counterrotation can appear both in coplanar and in non-coplanar retrograde m…
CO investigation of z=0.4-1.5 galaxies
A. -L. Melchior, F. Combes
We report on the results of an IRAM-30m search for CO emission lines in three galaxies at intermediate redshifts. The idea was to investigate the molecular content of galaxies brig…
Old stellar counter-rotating components in early-type galaxies from elliptical-spiral mergers
P. Di Matteo, F. Combes, A. -L. Melchior +1
We investigate, by means of numerical simulations, the possibility of forming counter-rotating old stellar components by major mergers between an elliptical and a spiral galaxy. We…
Chemodynamical evolution of interacting galaxies: the GalMer view
P. Di Matteo, F. Combes, I. Chilingarian +2
We have undertaken a large set of simulations of galaxy interactions and mergers (GalMer Project) in order to study the physical processes related to galaxy encounters. All morphol…
Molecular content of a type-Ia SN host galaxy at z=0.6
A. -L. Melchior, F. Combes
We study the properties and the molecular content of the host of a type-Ia supernova (SN1997ey). This z=0.575 host is the brightest submillimetre source of the sample of type-Ia su…
Star formation efficiency in galaxy interactions and mergers: a statistical study
P. Di Matteo, F. Combes, A. -L. Melchior +1
We investigate the enhancement of star formation efficiency in galaxy interactions and mergers, by numerical simulations of several hundred galaxy collisions. All morphological typ…
The surface brightness of the Galaxy at the Solar Neighbourhood
A. -L. Melchior, F. Combes, A. Gould
We present a new determination of the surface brightness of our Galaxy at the Solar Neighbourhood as observed from outside the Galaxy. We rely on various existing optical and infra…
Spectral and morphological properties of quasar hosts in SPH simulations of AGN feeding by mergers
A. Cattaneo, F. Combes, S. Colombi +2
We present a method for generating virtual observations from smoothed-particle-hydrodynamics (SPH) simulations. This method includes stellar population synthesis models and the rep…
Variable stars towards the bulge of M31: the AGAPE catalogue
R. Ansari, M. Auriere, P. Baillon +15
We present the AGAPE astrometric and photometric catalogue of 1579 variable stars in a 14'x10' field centred on M31. This work is the first survey devoted to variable stars in the…
A library of galaxy mergers
F. Combes, A. -L. Melchior
We have undertaken a large series of numerical simulations with the goal to built a library of galaxy mergers (GALMER). Since the aim is to have more than a thousand of realisation…
AGAPEROS: Searching for variable stars in the LMC Bar II. Temporal and near-IR analysis of Long-Period Variables
T. Lebzelter, M. Schultheis, A. L. Melchior
We analysed the light curves of a large sample of long period variables in the LMC from the AGAPEROS catalogue. The (non)regularity of the light change is discussed in detail showi…
The Point-Agape survey: 4 high signal-to-noise ratio microlensing candidates detected towards M31
S. Paulin-Henriksson, P. Baillon, A. Bouquet +12
We have carried out a survey of the Andromeda galaxy for unresolved microlensing (pixel lensing). We present a subset of four short timescale, high signal-to-noise microlensing can…
A Candidate M31/M32 Intergalactic Microlensing Event
S. Paulin-Henriksson, P. Baillon, A. Bouquet +13
We report the discovery of a microlensing candidate projected 2'54" from the center of M32, on the side closest to M31. The blue color (R-I= 0.00 +/- 0.14) of the source argues str…
Chemodynamical evolution of interacting galaxies
F. Combes, A. L. Melchior
We have undertaken numerical simulations of galaxy interactions and mergers, coupling the dynamics with the star formation history and the chemical evolution. The self-gravity of s…
Hands-On Universe: A Global Program for Education and Public Outreach in Astronomy
M. Boer, H. Pack, C. Pennypacker +3
Hands-On Universe (HOU) is an educational program that enables students to investigate the Universe while applying tools and concepts from science, math, and technology. Using the…
Hands-On TAROT: Intercontinental use of the TAROT for Education and Public Outreach
M. Boer, C. Thiebaut, A. Klotz +4
The TAROT telescope has for primary goal the search for the prompt optical counterpart of Cosmic Gamma-Ray Bursts. It is a completely autonomous 25cm telescope installed near Nice…
AGAPEROS: Searching for variable stars in the LMC Bar with the Pixel Method. I. Detection, astrometry and cross-identification
A. -L. Melchior, S. M. G. Hughes, J. Guibert
We extend the work developed in previous papers on microlensing with a selection of variable stars. We use the Pixel Method to select variable stars on a set of 2.5 x 10**6 pixel l…
Simulating galaxy surveys with FIRST (PACS & SPIRE)
A. -L. Melchior, F. Combes, B. Guiderdoni +1
The next generation of submillimetre/millimetre instruments will provide us with a deeper insight into the mechanisms that rule galaxy formation. As the brightest starbursts are th…
A Short Timescale Candidate Microlensing Event in the POINT-AGAPE Pixel Lensing Survey of M31
M. Auriere, P. Baillon, A. Bouquet +14
We report the discovery of a short-duration microlensing candidate in the northern field of the POINT-AGAPE pixel lensing survey towards M31. The full-width half-maximum timescale…
Pixel and Micro-lensing with NGST
S. Bensammar, A. -L. Melchior
Within 8 years, the current microlensing surveys of M31 will provide several hundred events affecting unresolved stars. They will thus allow a statistical study of the dark matter…
Detection of CO in the inner part of M31's bulge
A. -L. Melchior, F. Viallefond, M. Guelin +1
We report the first detection of CO in M31's bulge. The 12CO (1-0) and (2-1) lines are both detected in the dust complex D395A/393/384, at 1.3" (~0.35 kpc) from the centre. From th…
Theory of pixel lensing towards M31 I: the density contribution and mass of MACHOs
E. Kerins, B. J. Carr, N. W. Evans +6
POINT-AGAPE is an Anglo-French collaboration which is employing the Isaac Newton Telescope (INT) to conduct a pixel-lensing survey towards M31. In this paper we investigate what we…