Publications (30)
Hierarchical progressive surveys. Multi-resolution HEALPix data structures for astronomical images, catalogues, and 3-dimensional data cubes
P. Fernique, M. G. Allen, T. Boch +8
Scientific exploitation of the ever increasing volumes of astronomical data requires efficient and practical methods for data access, visualisation, and analysis. Hierarchical sky…
A Search for Dust Emission in the Leo Intergalactic Cloud
C. Bot, G. Helou, W. B. Latter +3
We present a search for infrared dust emission associated with the Leo cloud, a large intergalactic cloud in the M96 group. Mid-infrared and far-infrared images were obtained with…
Millimeter dust continuum emission unveiling the true mass of giant molecular clouds in the Small Magellanic Cloud
C. Bot, F. Boulanger, M. Rubio +1
CO observations have been so far the best way to trace molecular gas in external galaxies, but at low metallicity the gas mass deduced could be largely underestimated. At present,…
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…
Dust emission at 8-mic and 24-mic as Diagnostics of HII Region Radiative Transfer
M. S. Oey, J. Lopez-Hernandez, J. A. Kellar +10
We use the Spitzer SAGE survey of the Magellanic Clouds to evaluate the relationship between the 8-mic PAH emission, 24-mic hot dust emission, and HII region radiative transfer. We…
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…
Determining dust temperatures and masses in the Herschel era: the importance of observations longward of 200 micron
K. D. Gordon, F. Galliano, S. Hony +21
The properties of the dust grains (e.g., temperature and mass) can be derived from fitting far-IR SEDs (>100 micron). Only with SPIRE on Herschel has it been possible to get high s…
Predicting HCN, HCO+, multi-transition CO, and dust emission of star-forming galaxies From local spiral and ultraluminous infrared galaxies to high-z star-forming and submillimeter galaxies
B. Vollmer, P. Gratier, J. Braine +1
(abridged) In this work we have a closer look at the gas content or fraction and the associated star formation rate in main sequence and starburst galaxies at z=0 and z~1-2 by appl…
Warm molecular hydrogen in the Spitzer SINGS galaxy sample
H. Roussel, G. Helou, D. J. Hollenbach +12
(simplified) Results on the properties of warm H2 in 57 normal galaxies are derived from H2 rotational transitions, obtained as part of SINGS. This study extends previous extragala…
Gaps in the cloud cover? Comparing extinction measures in spiral disks
B. W. Holwerda, M. Meyer, M. Regan +11
Dust in galaxies can be mapped by either the FIR/sub-mm emission, the optical or infrared reddening of starlight, or the extinction of a known background source. We compare two dus…
Comission Femmes et Astronomie de la SF2A : Women participation in french astronomy 2025
N. Lagarde, R. -M. Ouazzani, J. Malzac +10
The Commission Femmes et Astronomie of the French Astronomical Society, has conducted a statistical study aimed at mapping the current presence of women in French professional astr…
Far-infrared to centimeter emission of very nearby galaxies with archival data
L. Correia, C. Bot, J. Chastenet +9
Compared to the well-studied infrared and radio domains, galaxy emission in the millimeter (mm) - centimeter (cm) range has been less observed. In this domain, galaxy emission cons…
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 Structure of a Low-Metallicity Giant Molecular Cloud Complex
A. K. Leroy, A. Bolatto, C. Bot +6
To understand the impact of low metallicities on giant molecular cloud (GMC) structure, we compare far infrared dust emission, CO emission, and dynamics in the star-forming complex…
Non-Standard Grain Properties, Dark Gas Reservoir, and Extended Submillimeter Excess, Probed by Herschel in the Large Magellanic Cloud
F. Galliano, S. Hony, J. -P. Bernard +13
Aims: In this paper, we perform detailed modelling of the Spitzer and Herschel observations of the LMC, in order to: (i) systematically study the uncertainties and biases affecting…
Gender and Precarity in Astronomy
N. A. Webb, C. Bot, S. Charpinet +6
Following the survey Well-being in astrophysics that was sent out in March 2021, to establish how astrophysics researchers, primarily in France, experience their career, some of th…
Herschel Inventory of The Agents of Galaxy Evolution (HERITAGE): the Large Magellanic Cloud dust
M. Meixner, F. Galliano, S. Hony +52
The HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE) of the Magellanic Clouds will use dust emission to investigate the life cycle of matter in both the Large and Sm…
Planck Early Results: Origin of the submm excess dust emission in the Magellanic Clouds
Planck Collaboration, P. A. R. Ade, N. Aghanim +197
The integrated Spectral Energy Distributions of the Large and Small Magellanic Cloud appear significantly flatter than expected from dust models based on their FIR and radio emissi…
Star Formation and Accretion in Nearby Galaxies
J. Moldon, A. Alberdi, M. Perez-Torres +11
The appearance of galaxies is strongly dominated by two physical phenomena: star formation and accretion of material onto compact objects, primarily supermassive black holes. Nearb…
Sub-millimeter to centimeter excess emission from the Magellanic Clouds. I. Global spectral energy distribution
F. P. Israel, W. F. Wall, D. Raban +5
In order to reconstruct the global SEDs of the Magellanic Clouds over eight decades in spectral range, we combined literature flux densities representing the entire LMC and SMC res…
Modeling and predicting the shape of the far-infrared to submillimeter emission in ultra-compact HII regions and cold clumps
D. Paradis, C. Mény, A. Noriega-Crespo +8
Dust properties are very likely affected by the environment in which dust grains evolve. For instance, some analyses of cold clumps (7 K- 17 K) indicate that the aggregation proces…
Cold dust clumps in dynamically hot gas
S. Kim, E. Kwon, S. C. Madden +27
We present clumps of dust emission from Herschel observations of the Large Magellanic Cloud (LMC) and their physical and statistical properties. We catalog cloud features seen in t…
Well-being in French Astrophysics
N. A. Webb, C. Bot, S. Charpinet +8
It has become clear that early career astrophysics researchers (doctoral researchers, post-docs, etc) have a very diverse appreciation of their career, with some declaring it the b…
Dust Masses, PAH Abundances, and Starlight Intensities in the SINGS Galaxy Sample
B. T. Draine, D. A. Dale, G. Bendo +17
Physical dust models are presented for 65 galaxies in the SINGS survey that are strongly detected in the four IRAC bands and three MIPS bands. For each galaxy we estimate (1) the t…
The Spitzer Infrared Nearby Galaxies Survey: A High-Resolution Spectroscopy Anthology
D. A. Dale, J. D. T. Smith, E. A. Schlawin +18
High resolution mid-infrared spectra are presented for 155 nuclear and extranuclear regions from the Spitzer Infrared Nearby Galaxies Survey (SINGS). The fluxes for nine atomic for…
The relations among 8, 24, and 160 micron dust emission within nearby spiral galaxies
G. J. Bendo, B. T. Draine, C. W. Engelbracht +9
We investigate the relations among the stellar continuum-subtracted 8 micron polycyclic aromatic hydrocarbon (PAH 8 micron) emission, 24 micron hot dust emission, and 160 micron co…
The Dust-to-Gas Ratio in the Small Magellanic Cloud Tail
K. D. Gordon, C. Bot, E. Muller +21
The Tail region of the Small Magellanic Cloud (SMC) was imaged using the MIPS instrument on the Spitzer Space Telescope as part of the SAGE-SMC Spitzer Legacy. Diffuse infrared emi…
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…
Multi-wavelength analysis of the dust emission in the Small Magellanic Cloud
C. Bot, F. Boulanger, G. Lagache +2
We present an analysis of dust grain emission in the diffuse interstellar medium of the Small Magellanic Cloud (SMC). This study is motivated by the availability of 170 microns ISO…
The Calibration of Mid-Infrared Star Formation Rate Indicators
D. Calzetti, R. C. Kennicutt, C. W. Engelbracht +25
With the goal of investigating the degree to which the mid-infrared emission traces the star formation rate (SFR), we analyze Spitzer 8 um and 24 um data of star-forming regions in…