Publications (28)
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 Gas Morphology of Nearby Star-Forming Galaxies
S. K. Stuber, E. Schinnerer, T. G. Williams +22
The morphology of a galaxy stems from secular and environmental processes during its evolutionary history. Thus galaxy morphologies have been a long used tool to gain insights on g…
A 50 pc scale view of star formation efficiency across NGC 628
K. Kreckel, C. Faesi, J. M. D. Kruijssen +16
Star formation is a multi-scale process that requires tracing cloud formation and stellar feedback within the local (<kpc) and global galaxy environment. We present first results f…
Modeling the molecular gas content and CO-to-H2 conversion factors in low-metallicity star-forming dwarf galaxies
L. Ramambason, V. Lebouteiller, S. C. Madden +8
Low-metallicity dwarf galaxies often show no or little CO emission, despite the intense star formation observed in local samples. Both simulations and resolved observations indicat…
Variations in the plane across galactic environments in PHANGS galaxies
I. Pessa, E. Schinnerer, A. Leroy +26
There exists some consensus that stellar mass surface density () and molecular gas mass surface density () are the main quantities responsible for locally set…
LMC+: Large-scale mapping of [CII] and [OIII] in the LMC molecular ridge, I. Dataset and line ratio analyses
C. Fischer, S. C. Madden, A. Krabbe +29
The fundamental process of star formation in galaxies involves the interplay between the fueling of star formation via molecular gas and the feedback from recently formed massive s…
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…
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…
Electron density distribution in HII regions in IC10
F. L. Polles, D. Fadda, W. D. Vacca +7
We present the [OIII]52μm map of the dwarf galaxy IC10, obtained with the Field-Imaging Far-Infrared Line Spectrometer (FIFI-LS) on board the Stratospheric Observatory for Infrare…
Linking stellar populations to HII regions across nearby galaxies: I. Constraining pre-supernova feedback from young clusters in NGC1672
A. T. Barnes, R. Chandar, K. Kreckel +32
One of the fundamental factors regulating the evolution of galaxies is stellar feedback. However, we still do not have strong observational constraints on the relative importance o…
On the Shapes and Structures of High-Redshift Compact Galaxies
M. Chevance, A. Weijmans, I. Damjanov +5
Recent deep Hubble Space Telescope WFC3 imaging suggests that a majority of compact quiescent massive galaxies at z~2 may contain disks. To investigate this claim, we have compared…
Resolved stellar population properties of PHANGS-MUSE galaxies
I. Pessa, E. Schinnerer, P. Sanchez-Blazquez +17
Analyzing resolved stellar populations across the disk of a galaxy can provide unique insights into how that galaxy assembled its stellar mass over its lifetime. Previous work at ~…
Dense molecular gas properties on 100 pc scales across the disc of NGC 3627
I. BeÅ¡liÄ, A. T. Barnes, F. Bigiel +29
It is still poorly constrained how the densest phase of the interstellar medium varies across galactic environment. A large observing time is required to recover significant emissi…
Star formation scaling relations at ~100 pc from PHANGS: Impact of completeness and spatial scale
I. Pessa, E. Schinnerer, F. Belfiore +31
Aims: The complexity of star formation at the physical scale of molecular clouds is not yet fully understood. We investigate the mechanisms regulating the formation of stars in dif…
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…
Mapping metallicity variations across nearby galaxy disks
K. Kreckel, I. -T. Ho, G. A. Blanc +21
The distribution of metals within a galaxy traces the baryon cycle and the buildup of galactic disks, but the detailed gas phase metallicity distribution remains poorly sampled. We…
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…
A constant NH(1-0)-to-HCN(1-0) ratio on kiloparsec scales
M. J. Jiménez-Donaire, A. Usero, I. BeÅ¡liÄ +24
Nitrogen hydrides such as NH and NH are widely used by Galactic observers to trace the cold dense regions of the interstellar medium. In external galaxies, because of l…
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…
Quantifying the energetics of molecular superbubbles in PHANGS galaxies
E. J. Watkins, K. Kreckel, B. Groves +26
Star formation and stellar feedback are interlinked processes that redistribute energy and matter throughout galaxies. When young, massive stars form in spatially clustered environ…
DeGaS-MC: Dense Gas Survey in the Magellanic Clouds I -- An APEX survey of HCO+ and HCN(2-1) toward the LMC and SMC
M. Galametz, A. Schruba, C. De Breuck +9
Investigating star formation requires precise knowledge of the properties of the dense molecular gas. The low metallicity and wide range of star formation activity of the Large and…
Ubiquitous velocity fluctuations throughout the molecular interstellar medium
J. D. Henshaw, J. M. D. Kruijssen, S. N. Longmore +23
The density structure of the interstellar medium (ISM) determines where stars form and release energy, momentum, and heavy elements, driving galaxy evolution. Density variations ar…
A sensitive, high-resolution, wide-field IRAM NOEMA CO(1-0) survey of the very nearby spiral galaxy IC 342
M. Querejeta, J. Pety, A. Schruba +31
We present a new wide-field 10.75 x 10.75 arcmin^2 (~11x11 kpc^2), high-resolution (theta = 3.6" ~ 60 pc) NOEMA CO(1-0) survey of the very nearby (d=3.45 Mpc) spiral galaxy IC 342.…
Resolved low-J CO excitation at 190 parsec resolution across NGC 2903 and NGC 3627
J. S. den Brok, A. K. Leroy, A. Usero +14
The low- rotational transitions of CO are commonly used to trace the distribution of molecular gas in galaxies. Their ratios are sensitive to excitation and physical cond…
Inferring the HII region escape fraction of ionizing photons from infrared emission lines in metal-poor star-forming dwarf galaxies
L. Ramambason, V. Lebouteiller, A. Bik +8
(abridged) Quantifying the ISM porosity to ionizing photons in nearby galaxies may improve our understanding of the mechanisms leading to Lyman Continuum photons leakage from galax…
Dense gas is not enough: environmental variations in the star formation efficiency of dense molecular gas at 100pc scales in M51
M. Querejeta, E. Schinnerer, A. Schruba +17
It remains unclear what sets the efficiency with which molecular gas transforms into stars. Here we present a new VLA map of the spiral galaxy M51 in 33GHz radio continuum, an exti…
Comparing the pre-SNe feedback and environmental pressures for 6000 HII regions across 19 nearby spiral galaxies
A. T. Barnes, S. C. O. Glover, K. Kreckel +28
The feedback from young stars (i.e. pre-supernova) is thought to play a crucial role in molecular cloud destruction. In this paper, we assess the feedback mechanisms acting within…
Stellar structures, molecular gas, and star formation across the PHANGS sample of nearby galaxies
M. Querejeta, E. Schinnerer, S. Meidt +32
We identify stellar structures in the PHANGS sample of 74 nearby galaxies and construct morphological masks of sub-galactic environments based on Spitzer 3.6 micron images. At the…