474 citations · 1.9k across the 57 of their papers we have counts for
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Molecular gas in a system of two interacting galaxies overlapping on the line-of-sight
Anaëlle Halle, Barbara Mazzilli Ciraulo, Daniel Maschmann +2
Galaxy interactions can disturb gas in galactic discs, compress it, excite it, and enhance star formation. An intriguing system likely consisting of two interacting galaxies overla…
Investigating Galactic Fountains in M101: Insights from Ionized, UV emissions and Neutral Gas
Aashiya Anitha Shaji, Françoise Combes, Anne-Laure Melchior +1
Spiral galaxy disks are thought to exist in a quasi-stationary state, between fresh gas accretion from cosmic filaments and disk star formation, self-regulated through supernovae f…
Dynamical traction and black hole orbital migration
C. M. Boily, T. L. François, J. Freundlich +3
We investigate the circumstances which allow a black hole to remain put at the galactic centre when the stellar core is anisotropic. We use N-body calculations to study the respons…
A group of merging galaxies falling onto Abell 2142
Aashiya Anitha Shaji, Anaëlle Hallé, Damir Gasymov +3
Galaxy clusters produce a very hostile environment to galaxies, whose gas gets stripped by ram-pressure, suffer galaxy interactions and witness quenching of their star formation. C…
Central kiloparsec region of Andromeda. I. Dynamical modelling
Lucie Cros, Françoise Combes, Anne-Laure Melchior +1
The Andromeda galaxy (M31) is the most nearby giant spiral galaxy, an opportunity to study with high resolution dynamical phenomena occurring in nuclear disks and bulges, able to e…
M31 nucleus: molecular and ionised gas content upper limits
Anne-Laure Melchior, Francoise Combes
We report NOEMA and ALMA observations of the nucleus of Andromeda (M31), putting strong constraints on the presence of gas in the form of cold or warm phase, as proposed by Chang e…
The origin of double-peak emission-line galaxies: rotating discs, bars or galaxy mergers?
Daniel Maschmann, Anaelle Halle, Anne-Laure Melchior +2
Emission lines with a double-peak (DP) shape, detected in the centre of galaxies, have been extensively used in the past to identify peculiar kinematics such as dual active galacti…
Central star formation in double-peak gas rich radio galaxies
Daniel Maschmann, Anne-Laure Melchior, Francoise Combes +4
In a recent work, a large sample of double-peak (DP) emission line galaxies have been identified from the SDSS. While the two peaks could represent two kinematic components, they m…
Two interacting galaxies hiding as one, revealed by MaNGA
Barbara Mazzilli Ciraulo, Anne-Laure Melchior, Daniel Maschmann +5
Given their prominent role in galaxy evolution, it is of paramount importance to unveil galaxy interactions and merger events and to investigate the underlying mechanisms. The use…
Double-peak emission line galaxies in the SDSS catalogue. A minor merger sequence
Daniel Maschmann, Anne-Laure Melchior, Gary A. Mamon +2
Mergers can be detected as double-peak narrow emission line galaxies but they are difficult to disentangle from disc rotations and gas outflows. We aim to properly detect such gala…
SIGNALS: I. Survey Description
L. Rousseau-Nepton, R. P. Martin, C. Robert +60
SIGNALS, the Star formation, Ionized Gas, and Nebular Abundances Legacy Survey, is a large observing program designed to investigate massive star formation and HII regions in a sam…
Ultimate Merging at z~0.1
Daniel Maschmann, Anne-Laure Melchior
We present a study of 58 double-peaked emission line galaxies for which one of the components is suppressed in [OIII]5008 or significantly weaker than the other one. Accordingly, t…
M31 circum-nuclear region: a molecular survey with the IRAM-interferometer
Julien Dassa-Terrier, Anne-Laure Melchior, Francoise Combes
We analyse molecular observations performed at IRAM interferometer in CO(1-0) of the circum-nuclear region (within 250 pc) of Andromeda, with 2.9 arcsec = 11 pc resolution. We dete…
Exhaustion of the gas next to M31's supermassive black hole
Anne-Laure Melchior, Francoise Combes
New observations performed at IRAM Plateau de Bure reveal the absence of molecular gas next to Andromeda's black hole. We derived a 3 sigma upper limit on the molecular gas mass of…
A SITELLE view of M31's central region - I: Calibrations and radial velocity catalogue of nearly 800 emission-line point-like sources
Thomas B. Martin, Laurent Drissen, Anne-Laure Melchior
We present a detailed description of the wavelength, astrometric and photometric calibration plan for SITELLE, the imaging Fourier transform spectrometer attached to the Canada-Fra…
RCSED - A Value-Added Reference Catalog of Spectral Energy Distributions of 800,299 Galaxies in 11 Ultraviolet, Optical, and Near-Infrared Bands: Morphologies, Colors, Ionized Gas and Stellar Populations Properties
Igor Chilingarian, Ivan Zolotukhin, Ivan Katkov +3
We present RCSED, the value-added Reference Catalog of Spectral Energy Distributions of galaxies, which contains homogenized spectrophotometric data for 800,299 low and intermediat…
Dense gas tracing the collisional past of Andromeda. An atypical inner region?
A. -L. Melchior, F. Combes
The central kiloparsec region of the Andromeda galaxy is relatively gas poor, while the interstellar medium appears to be concentrated in a ring-like structure at about 10 kpc radi…