Publications (72)
Linking dust emission to fundamental properties in galaxies: The low-metallicity picture
A. Rémy-Ruyer, S. C. Madden, F. Galliano +15
In this work, we aim at providing a consistent analysis of the dust properties from metal-poor to metal-rich environments by linking them to fundamental galactic parameters. We con…
A milestone toward understanding PDR properties in the extreme environment of LMC-30Dor
M. Chevance, S. C. Madden, V. Lebouteiller +11
More complete knowledge of galaxy evolution requires understanding the process of star formation and interaction between the interstellar radiation field and the interstellar mediu…
Star-formation rates from young-star counts and the structure of the ISM across the NGC346/N66 complex in the SMC
S. Hony, D. A. Gouliermis, F. Galliano +21
The rate at which interstellar gas is converted into stars, and its dependence on environment, is one of the pillars on which our understanding of the visible Universe is build. We…
Globules and pillars seen in the [CII] 158 micron line with SOFIA
N. Schneider, R. Güsten, P. Tremblin +22
Molecular globules and pillars are spectacular features, found only in the interface region between a molecular cloud and an HII-region. Impacting Far-ultraviolet (FUV) radiation c…
The gas-to-dust mass ratio of Centaurus A as seen by Herschel
T. J. Parkin, C. D. Wilson, K. Foyle +20
We present photometry of the nearby galaxy NGC 5128 (Centaurus A) observed with the PACS and SPIRE instruments on board the Herschel Space Observatory, at 70, 160, 250, 350 and 500…
The [C II] emission as a molecular gas mass tracer in galaxies at low and high redshift
A. Zanella, E. Daddi, G. Magdis +19
We present ALMA Band 9 observations of the [C II]158um emission for a sample of 10 main-sequence galaxies at redshift z ~ 2, with typical stellar masses (log M*/Msun ~ 10.0 - 10.9)…
On the origin of M81 group extended dust emission
J. I. Davies, C. D. Wilson, R. Auld +57
Galactic cirrus emission at far-infrared wavelengths affects many extragalactic observations. Separating this emission from that associated with extragalactic objects is both impor…
Diagnostics of AGN-driven Molecular Outflows in ULIRGs from Herschel-PACS Observations of OH at 119um
H. W. W. Spoon, D. Farrah, V. Lebouteiller +14
We report on our observations of the 79 and 119um doublet transitions of OH for 24 local (z<0.262) ULIRGs observed with Herschel-PACS as part of the Herschel ULIRG Survey (HERUS).…
Star Formation & Dust Heating in the FIR Bright Sources of M83
K. Foyle, G. Natale, C. D. Wilson +16
We investigate star formation and dust heating in the compact FIR bright sources detected in the Herschel maps of M83. We use the source extraction code GETSOURCES to detect and ex…
Non-Perturbative Quantum Dynamics of a New Inflation Model
D. Boyanovsky, D. Cormier, H. J. de Vega +2
We consider an O(N) model coupled self-consistently to gravity in the semiclassical approximation, where the field is subject to `new inflation' type initial conditions. We study t…
Probing the baryon cycle of galaxies with SPICA mid- and far-infrared observations
F. F. S. van der Tak, S. C. Madden, P. Roelfsema +29
The SPICA mid and far-infrared telescope will address fundamental issues in our understanding of star formation and ISM physics in galaxies. A particular hallmark of SPICA is the o…
The spatially-resolved correlation between [NII] 205 μm line emission and the 24 μm continuum in nearby galaxies
T. M. Hughes, M. Baes, M. R. P. Schirm +12
A correlation between the 24 μm continuum and the [NII] 205 μm line emission may arise if both quantities trace the star formation activity on spatially-resolved scales within a…
Out of Equilibrium Fields in Inflationary Dynamics. Density Fluctuations
D. Boyanovsky, D. Cormier, H. J. de Vega +2
The energy and time scales during the inflationary stage of the universe calls for an out of equilibrium quantum field treatment. Moreover, the high energy densities involved make…
The dust morphology of the elliptical Galaxy M86 with SPIRE
H. L. Gomez, M. Baes, L. Cortese +58
We present Herschel-SPIRE observations at 250-500um of the giant elliptical galaxy M86 and examine the distribution of the resolved cold dust emission and its relation with other g…
Scalar Field Dynamics in Friedman Robertson Walker Spacetimes
D. Boyanovsky, D. Cormier, H. J. de Vega +3
We study the non-linear dynamics of quantum fields in matter and radiation dominated universes, using the non-equilibrium field theory approach combined with the non-perturbative H…
Herschel photometric observations of the nearby low metallicity irregular galaxy NGC 6822
M. Galametz, S. C. Madden, F. Galliano +57
We present the first Herschel PACS and SPIRE images of the low-metallicity galaxy NGC6822 observed from 70 to 500 mu and clearly resolve the HII regions with PACS and SPIRE. We fin…
The thermal dust emission in the N158-N159-N160 (LMC) star forming complex mapped by Spitzer, Herschel and LABOCA
M. Galametz, S. Hony, F. Galliano +21
We present a study of the infrared/submm emission of the LMC star forming complex N158-N159-N160. Combining observations from the Spitzer Space Telescope (3.6-70um), the Herschel S…
SOFIA/FIFI-LS Full-disk [CII] Mapping and CO-dark Molecular Gas across the Nearby Spiral Galaxy NGC 6946
F. Bigiel, I. de Looze, A. Krabbe +17
We present SOFIA/FIFI-LS observations of the [CII] 158m cooling line across the nearby spiral galaxy NGC 6946. We combine these with UV, IR, CO, and H I data to compare [CII] e…
EMPIRE: The IRAM 30-m Dense Gas Survey of Nearby Galaxies
MarÃa J. Jiménez-Donaire, F. Bigiel, A. K. Leroy +14
We present EMPIRE, an IRAM 30-m large program that mapped mm dense gas tracers at kpc resolution across the whole star-forming disk of nine nearby, massiv…
Herschel spectroscopy of Massive Young Stellar Objects in the Magellanic Clouds
J. M. Oliveira, J. Th. van Loon, M. Sewilo +11
We present Herschel Space Observatory Photodetector Array Camera and Spectrometer (PACS) and Spectral and Photometric Imaging Receiver Fourier Transform Spectrometer (SPIRE FTS) sp…
The physical characteristics of the gas in the disk of Centaurus A using the Herschel Space Observatory
T. J. Parkin, C. D. Wilson, M. R. P. Schirm +12
We search for variations in the disk of Centaurus A of the emission from atomic fine structure lines using Herschel PACS and SPIRE spectroscopy. In particular we observe the [C II]…
Out of Equilibrium Dynamics of an Inflationary Phase Transition
D. Boyanovsky, D. Cormier, H. J. de Vega +1
We study the non-linear dynamics of an inflationary phase transition in a quartically self coupled inflaton model within the framework of a de Sitter background. Large N and Hartre…
The dust properties and physical conditions of the interstellar medium in the LMC massive star forming complex N11
M. Galametz, S. Hony, M. Albrecht +19
We combine Spitzer and Herschel data of the star-forming region N11 in the Large Magellanic Cloud to produce detailed maps of the dust properties in the complex and study their var…
The central region of spiral galaxies as seen by Herschel. M81, M99 and M100
M. Sauvage, N. Sacchi, G. J. Bendo +57
With appropriate spatial resolution, images of spiral galaxies in thermal infrared (~10 micron and beyond) often reveal a bright central component, distinct from the stellar bulge,…
The effects of star formation on the low-metallicity ISM: NGC4214 mapped with Herschel/PACS spectroscopy
D. Cormier, S. C. Madden, S. Hony +12
We present Herschel/PACS spectroscopic maps of the dwarf galaxy NC4214 observed in 6 far infrared fine-structure lines: [C II] 158mu, [O III] 88mu, [O I] 63mu, [O I] 146mu, [N II]…
Herschel and JCMT observations of the early-type dwarf galaxy NGC 205
I. De Looze, M. Baes, T. J. Parkin +18
We present Herschel dust continuum, James Clerk Maxwell Telescope CO(3-2) observations and a search for [CII] 158 micron and [OI] 63 micron spectral line emission for the brightest…
Non-Equilibrium Field Theory Dynamics in Inflationary Cosmology
D. Cormier
For simple inflationary models, we provide a consistent and complete scheme by which the macro-physical details of early universe inflation may be determined explicitly from the un…
Revealing the cold dust in low-metallicity environments: I - Photometry analysis of the Dwarf Galaxy Survey with Herschel
A. Rémy-Ruyer, S. C. Madden, F. Galliano +22
We present new photometric data from our Herschel Key Programme, the Dwarf Galaxy Survey (DGS), dedicated to the observation of the gas and dust in 48 low-metallicity environments.…
Spinodal Decomposition and Inflation: Dynamics and Metric Perturbations
D. Cormier, R. Holman
We analyse the dynamics of spinodal decomposition in inflationary cosmology using the closed time path formalism of out of equilibrium quantum field theory combined with the non-pe…
Out of Equilibrium Dynamics of Supersymmetry at High Energy Density
J. Baacke, D. Cormier, H. J. de Vega +1
We investigate the out of equilibrium dynamics of global chiral supersymmetry at finite energy density. We concentrate on two specific models. The first is the massive Wess-Zumino…
Gas-to-Dust mass ratios in local galaxies over a 2 dex metallicity range
A. Rémy-Ruyer, S. C. Madden, F. Galliano +17
This paper analyses the behaviour of the gas-to-dust mass ratio (G/D) of local Universe galaxies over a large metallicity range. We combine three samples: the Dwarf Galaxy Survey,…
Spinodal Instabilities and the Dark Energy Problem
D. Cormier, R. Holman
The accelerated expansion of the Universe measured by high redshift Type Ia Supernovae observations is explained using the non-equilibrium dynamics of naturally soft boson fields.…
The molecular gas reservoir of 6 low-metallicity galaxies from the Herschel Dwarf Galaxy Survey: A ground-based follow-up survey of CO(1-0), CO(2-1), and CO(3-2)
D. Cormier, S. C. Madden, V. Lebouteiller +14
We aim to quantify the molecular gas reservoir in a subset of 6 low-metallicity galaxies from the Herschel Dwarf Galaxy Survey with newly acquired CO data, and link this reservoir…
The Bluedisk Survey: molecular gas distribution and scaling relations in the context of galaxy evolution
D. Cormier, F. Bigiel, J. Wang +8
One of the key goals of the Bluedisk survey is to characterize the impact of gas accretion in disc galaxies in the context of galaxy evolution. It contains 50 disc galaxies in the…
SPIRE imaging of M82: cool dust in the wind and tidal streams
H. Roussel, C. D. Wilson, L. Vigroux +57
M82 is a unique representative of a whole class of galaxies, starbursts with superwinds, in the Very Nearby Galaxy Survey with Herschel. In addition, its interaction with the M81 g…
The Herschel Space Observatory view of dust in M81
G. J. Bendo, C. D. Wilson, M. Pohlen +57
We use Herschel Space Observatory data to place observational constraints on the peak and Rayleigh-Jeans slope of dust emission observed at 70-500 microns in the nearby spiral gala…
Mid-J CO Emission in Nearby Seyfert Galaxies
M. Pereira-Santaella, L. Spinoglio, G. Busquet +10
We study for the first time the complete sub-millimeter spectra (450 GHz to 1550 GHz) of a sample of nearby active galaxies observed with the SPIRE Fourier Transform Spectrometer (…
Preheating in FRW Universes
D. Boyanovsky, D. Cormier, H. J. de Vega +3
The nonlinear time evolution of the quantum fields is studied in the O(N) model for large N in a radiation dominated FRW universe, with a view towards the phenomenon of explosive p…
A Survey of Atomic Carbon [C I] in High-redshift Main-Sequence Galaxies
F. Valentino, G. E. Magdis, E. Daddi +15
We present the first results of an ALMA survey of the lower fine structure line of atomic carbon [C I] in far infrared-selected galaxies on the main sequence a…
CO/CO Gradients Across the Disks of Nearby Spiral Galaxies
M. J. Jimenez-Donaire, D. Cormier, F. Bigiel +14
We use the IRAM Large Program EMPIRE and new high-resolution ALMA data to measure 13CO(1-0)/C18O(1-0) intensity ratios across nine nearby spiral galaxies. These isotopologues of CO…
Dynamics of O(N) chiral supersymmetry at finite energy density
J. Baacke, D. Cormier, H. J. de Vega +1
We consider an O(N) version of a massive, interacting, chiral supersymmetry model solved exactly in the large N limit. We demonstrate that the system approaches a stable attractor…
The EMPIRE Survey: Systematic Variations in the Dense Gas Fraction and Star Formation Efficiency from Full-Disk Mapping of M51
F. Bigiel, A. K. Leroy, M. J. Jimenez-Donaire +16
We present the first results from the EMPIRE survey, an IRAM large program that is mapping tracers of high density molecular gas across the disks of nine nearby star-forming galaxi…
Insights into gas heating and cooling in the disc of NGC 891 from Herschel far-infrared spectroscopy
T. M. Hughes, K. Foyle, M. R. P. Schirm +15
We present Herschel PACS and SPIRE spectroscopy of the most important far-infrared cooling lines in the nearby edge-on spiral galaxy, NGC 891: [CII] 158 m, [NII] 122, 205 m…
Self-Consistent Dynamics of Inflationary Phase Transitions
D. Boyanovsky, D. Cormier, H. J. de Vega +2
The physics of the inflationary universe requires the study of the out of equilibrium evolution of quantum fields in curved spacetime. We present the evolution for both the geometr…
Neutral gas heating by X-rays in primitive galaxies: Infrared observations of IZw18 with Herschel
V. Lebouteiller, D. Pequignot, D. Cormier +8
(abridged) The dominant thermal mechanisms in the neutral interstellar medium, which acts as a star-forming gas reservoir, are uncertain in extremely metal-poor galaxies. Our objec…
PACS photometry of the Herschel Reference Survey - Far-infrared/sub-millimeter colours as tracers of dust properties in nearby galaxies
L. Cortese, J. Fritz, S. Bianchi +26
We present Herschel/PACS 100 and 160 micron integrated photometry for the 323 galaxies in the Herschel Reference Survey (HRS), a K-band-, volume-limited sample of galaxies in the l…
Herschel observations and a model for IRAS 08572+3915: a candidate for the most luminous infrared galaxy in the local (z < 0.2) Universe
A. Efstathiou, C. Pearson, D. Farrah +17
We present Herschel photometry and spectroscopy, carried out as part of the Herschel ULIRG survey (HERUS), and a model for the infrared to submillimetre emission of the ultralumino…
Herschel-SPIRE observations of the disturbed galaxy NGC4438
L. Cortese, G. J. Bendo, A. Boselli +56
We present Herschel-SPIRE observations of the perturbed galaxy NGC4438 in the Virgo cluster. These images reveal the presence of extra-planar dust up to ~4-5 kpc away from the gala…
The Herschel Dwarf Galaxy Survey: I. Properties of the low-metallicity ISM from PACS spectroscopy
D. Cormier, S. C. Madden, V. Lebouteiller +17
The far-infrared (FIR) lines are key tracers of the physical conditions of the interstellar medium (ISM) and are becoming workhorse diagnostics for galaxies throughout the universe…
Mapping the interstellar medium in galaxies with Herschel/SPIRE
S. A. Eales, M. W. L. Smith, C. D. Wilson +57
The standard method of mapping the interstellar medium in a galaxy, by observing the molecular gas in the CO 1-0 line and the atomic gas in the 21-cm line, is largely limited with…
Local starburst conditions and formation of GRB 980425 / SN 1998bw within a collisional ring
M. Arabsalmani, F. Renaud, S. Roychowdhury +9
We present the first spatially resolved study of molecular gas in the vicinity of a Gamma Ray Burst, using CO(2-1) emission line observations with the Atacama Large Millimetre Arra…
Optical Depth Estimates and Effective Critical Densities of Dense Gas Tracers in the Inner Parts of Nearby Galaxy Discs
M. J. Jimenez-Donaire, F. Bigiel, A. K. Leroy +17
High critical density molecular lines like HCN(1-0) or HCO+(1-0) represent our best tool to study currently star-forming, dense molecular gas at extragalactic distances. The optica…
Spinodal Inflation
D. Cormier, R. Holman
Out-of-equilibrium, non-perturbative, quantum effects significantly modify the standard picture of inflation in a wide class of models including new, natural, and hybrid inflation.…
The Herschel Dwarf Galaxy Survey: II. Physical conditions, origin of [CII] emission, and porosity of the multiphase low-metallicity ISM
D. Cormier, N. P. Abel, S. Hony +7
The sensitive infrared telescopes, Spitzer and Herschel, have been used to target low-metallicity star-forming galaxies, allowing us to investigate the properties of their interste…
A superluminous supernova in high surface density molecular gas within the bar of a metal-rich galaxy
M. Arabsalmani, S. Roychowdhury, F. Renaud +8
We report the Atacama Large Millimeter/submillimeter Array (ALMA) observations of the metal rich host galaxy of superluminous supernova (SLSN) PTF10tpz, a barred spiral galaxy at z…
New ALMA constraints on the star-forming ISM at low metallicity: A 50 pc view of the blue compact dwarf galaxy SBS0335-052
D. Cormier, G. J. Bendo, S. Hony +8
Properties of the cold interstellar medium of low-metallicity galaxies are not well-known due to the faintness and extremely small scale on which emission is expected. We present d…
Tracing the total molecular gas in galaxies: [CII] and the CO-dark gas
S. C. Madden, D. Cormier, S. Hony +11
While the CO(1-0) transition is often used to deduce the total molecular hydrogen in galaxies, it is challenging to detect in low metallicity galaxies, in spite of the star formati…
Full-disc CO(1-0) mapping across nearby galaxies of the EMPIRE survey and the CO-to-H conversion factor
D. Cormier, F. Bigiel, M. J. Jiménez-Donaire +16
Carbon monoxide (CO) provides crucial information about the molecular gas properties of galaxies. While CO has been targeted extensively, isotopologues such as CO hav…
Herschel photometric observations of the low metallicity dwarf galaxy NGC 1705
B. O'Halloran, M. Galametz, S. C. Madden +57
We present Herschel SPIRE and PACS photometeric observations of the low metallicity (Z ~ 0.35 solar) nearby dwarf galaxy, NGC 1705, in six wavelength bands as part of the Dwarf Gal…
The Herschel Reference Survey
A. Boselli, S. Eales, L. Cortese +53
The Herschel Reference Survey is a guaranteed time Herschel key project and will be a benchmark study of dust in the nearby universe. The survey will complement a number of other H…
Modeling ionized gas in low-metallicity environments: the Local Group dwarf galaxy IC10
F. L. Polles, S. C. Madden, V. Lebouteiller +9
Our objective is to investigate the physical properties of the ionised gas of the low-metallicity dwarf galaxy, IC 10, at various spatial scales: from individual HII regions to the…
Regional variations in the dense gas heating and cooling in M51 from Herschel far-infrared spectroscopy
T. J. Parkin, C. D. Wilson, M. R. P. Schirm +13
We present Herschel PACS and SPIRE spectroscopy of the most important far-infrared cooling lines in M51, [CII](158 μm), [NII](122 & 205 μm), [OI](63 and 145 μm) and [OIII](88 μ…
Probing the molecular interstellar medium of M82 with Herschel-SPIRE spectroscopy
P. Panuzzo, N. Rangwala, A. Rykala +60
We present the observations of the starburst galaxy M82 taken with the Herschel SPIRE Fourier Transform Spectrometer. The spectrum (194-671 μm) shows a prominent CO rotational lad…
Physical conditions in the gas phases of the giant HII region LMC-N11 unveiled by Herschel - I. Diffuse [CII] and [OIII] emission in LMC-N11B
V. Lebouteiller, D. Cormier, S. C. Madden +10
(Abridged) The Magellanic Clouds provide a nearby laboratory for metal-poor dwarf galaxies. The low dust abundance enhances the penetration of UV photons into the interstellar medi…
An Overview of the Dwarf Galaxy Survey
S. C. Madden, A. Remy Ruyer, M. Galametz +38
The Dwarf Galaxy Survey (DGS) program is studying low-metallicity galaxies using 230h of far-infrared (FIR) and submillimetre (submm) photometric and spectroscopic observations of…
FIR colours and SEDs of nearby galaxies observed with Herschel
A. Boselli, L. Ciesla, V. Buat +78
We present infrared colours (in the 25-500 mic spectral range) and UV to radio continuum spectral energy distributions of a sample of 51 nearby galaxies observed with SPIRE on Hers…
Metric Perturbations and Inflationary Phase Transitions
D. Cormier, R. Holman
We study the out of equilibrium dynamics of inflationary phase transitions and compute the resulting spectrum of metric perturbations relevant to observation. We show that simple s…
Physical conditions in the gas phases of the giant HII region LMC-N11: II. Origin of [CII] and fraction of CO-dark gas
V. Lebouteiller, D. Cormier, S. C. Madden +11
(abridged) The ambiguous origin of [CII] 158um in the interstellar medium complicates its use for diagnostics concerning the star-formation rate and physical conditions in photodis…
The nature of the interstellar medium of the starburst low-metallicity galaxy Haro11: a multi-phase model of the infrared emission
D. Cormier, V. Lebouteiller, S. C. Madden +15
(abridged) Our goal is to describe the multi-phase ISM of the IR bright low-metallicity galaxy Haro 11, dissecting the photoionised and photodissociated gas components. We present…
Modeling the physical properties in the ISM of the low-metallicity galaxy NGC4214
A. Dimaratos, D. Cormier, F. Bigiel +1
We present a model for the interstellar medium of NGC4214 with the objective to probe the physical conditions in the two main star-forming regions and their connection with the sta…
Radial distribution of gas and dust in the two spiral galaxies M99 and M100
M. Pohlen, L. Cortese, M. W. L. Smith +55
By combining Herschel-SPIRE data with archival Spitzer, HI, and CO maps, we investigate the spatial distribution of gas and dust in the two famous grand-design spirals M99 and M100…
A multiwavelength study of the Magellanic-type galaxy NGC 4449 - I. Modelling the spectral energy distribution, the ionization structure and the star formation history
O. Å. Karczewski, M. J. Barlow, M. J. Page +16
[Abridged] We present an integrated photometric spectral energy distribution (SED) of the Magellanic-type galaxy NGC 4449 from the far-ultraviolet (UV) to the submillimetre, includ…