40.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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25 papers · 2 filters
Differential abundances of open clusters and their tidal tails: chemical tagging and chemical homogeneity
L. Casamiquela, Y. Tarricq, C. Soubiran +4
Well studied Open Clusters (OCs) in the Solar neighbourhood are used as reference objects to test galactic and stellar theories. For that purpose their chemical composition needs t…
Rotation of molecular clouds in M~51
J. Braine, A. Hughes, E. Rosolowsky +4
The grand-design spiral galaxy M~51 was observed at 40pc resolution in CO(1--0) by the PAWS project. A large number of molecular clouds were identified and we search for velocity g…
Fragmentation and filaments at the onset of star and cluster formation: SABOCA 350 m view of ATLASGAL selected massive clumps
Yuxin Lin, Timea Csengeri, Friedrich Wyrowski +4
The structure formation of the dense interstellar material and the fragmentation of clumps into cores is a fundamental step to understand how stars and stellar clusters form. We ai…
KFPA Examinations of Young STellar Object Natal Environments (KEYSTONE): Hierarchical Ammonia Structures in Galactic Giant Molecular Clouds
Jared Keown, James Di Francesco, Erik Rosolowsky +23
We present initial results from the K-band focal plane array Examinations of Young STellar Object Natal Environments (KEYSTONE) survey, a large project on the 100-m Green Bank Tele…
Enrichment of the Galactic disc with neutron-capture elements: Mo and Ru
Tamara Mishenina, Marco Pignatari, Tatiana Gorbaneva +4
We present new observational data for the heavy elements molybdenum (Mo, Z = 42) and ruthenium (Ru, Z = 44) in F-, G-, and K-stars belonging to different substructures of the Milky…
Abundances of sulphur molecules in the Horsehead nebula. First NS+ detection in a photodissociation region
P. Rivière-Marichalar, A. Fuente, J. R. Goicoechea +8
Aims. Our goal is to complete the inventory of S-bearing molecules and their abundances in the prototypical photodissociation region (PDR) the Horsehead nebula to gain insight into…
Influence of galactic arm scale dynamics on the molecular composition of the cold and dense ISM II. Molecular oxygen abundance
V. Wakelam, M. Ruaud, P. Gratier +1
Molecular oxygen has been the subject of many observational searches as chemical models predicted it to be a reservoir of oxygen. Although it has been detected in two regions of th…
Molecular analysis of a high-mass prestellar core candidate in W43-MM1
J. Molet, N. Brouillet, T. Nony +6
High-mass analogues of low-mass prestellar cores are searched for to constrain the models of high-mass star formation. Several high-mass cores, at various evolutionary stages, have…
Exposing the plural nature of molecular clouds : Extracting filaments and the CIB against the true scale-free interstellar medium
J. -F. Robitaille, F. Motte, N. Schneider +2
We present the Multiscale non-Gaussian Segmentation (MnGSeg) analysis technique. This wavelet based method combines the analysis of the probability distribution function (PDF) of m…
New constraints on the initial parameters of low-mass star formation from chemical modeling
Thomas H. G. Vidal, Pierre Gratier, Neil Vaytet +2
The complexity of physico-chemical models of star formation is increasing, with models that take into account new processes and more realistic setups. These models allow astrochemi…
Probing the cold magnetized Universe with SPICA-POL (B-BOP)
Ph. André, A. Hughes, V. Guillet +53
SPICA, the cryogenic infrared space telescope recently pre-selected for a `Phase A' concept study as one of the three remaining candidates for ESA's fifth medium class (M5) mission…
Isocyanogen formation in the cold interstellar medium
Charlotte Vastel, Jean-Christophe Loison, Valentine Wakelam +1
Cyanogen (NCCN) is the simplest member of the dicyanopolyynes group, and has been proposed as a major source of the CN radical observed in cometary atmospheres. Although not detect…
How the power spectrum of dust continuum images may hide the presence of a characteristic filament width
Arabindo Roy, Philippe André, Doris Arzoumanian +6
Herschel observations of interstellar clouds support a paradigm for star formation in which filaments play a central role. One of the foundations of this paradigm is the finding, b…
The ALMA-PILS survey: Gas dynamics in IRAS 162932422 and the connection between its two protostars
M. H. D. van der Wiel, S. K. Jacobsen, J. K. Jørgensen +10
[Abridged] The majority of stars form in binary or higher order systems. The Class 0 protostellar system IRAS16293-2422 contains two protostars, 'A' and 'B', separated by ~600 au a…
Multi-line Herschel/HIFI observations of water reveal infall motions and chemical segregation around high-mass protostars
Floris van der Tak, Russ Shipman, Thierry Jacq +3
(Abridged) We use HIFI maps of the 987 GHz H2O 2(02)-1(11) emission to measure the sizes and shapes of 19 high-mass protostellar envelopes. To identify infall, we use HIFI spectra…
Comparing the Properties of GMCs in M33 from Simulations and Observations
C. L. Dobbs, E. Rosolowsky, A. R. Pettitt +3
We compare the properties of clouds in simulated M33 galaxies to those observed in the real M33. We apply a friends of friends algorithm and CPROPS to identify clouds, as well as a…
A dynamically young, gravitationally stable network of filaments in Orion B
Jan H. Orkisz, Nicolas Peretto, Jérôme Pety +15
Filaments are a key step on the path that leads from molecular clouds to star formation. However, their characteristics are heavily debated, and the exact processes that lead to th…
Oxygen fractionation in dense molecular clouds
Jean-Christophe Loison, Valentine Wakelam, Pierre Gratier +13
We have developed the first gas-grain chemical model for oxygen fractionation (also including sulphur fractionation) in dense molecular clouds, demonstrating that gas-phase chemist…
Relationship between the Line Width of the Atomic and Molecular ISM in M33
Eric W. Koch, Erik W. Rosolowsky, Andreas Schruba +5
We investigate how the spectral properties of atomic (HI) and molecular (H) gas, traced by CO(2-1), are related in M33 on pc scales. We find the HI and CO(2-1) velocity at…
Protoplanetary disks: Sensitivity of the chemical composition to various model parameters
Valentine Wakelam, Edwige Chapillon, Anne Dutrey +4
Protoplanetary disks are challenging objects for astrochemical models due to strong density and temperature gradients and due to the UV photons 2D propagation. In this paper, we ha…
A distant OB association around RAFGL 5475
F. Comeron, A. A. Djupvik, J. Torra +2
Observations of the galactic disk at mid-infrared and longer wavelengths reveal a wealth of structures indicating the existence of complexes of recent massive star formation. Howev…
Open clusters in APOGEE and GALAH: Combining Gaia and ground-based spectroscopic surveys
R. Carrera, A. Bragaglia, T. Cantat-Gaudin +7
Context: Open clusters are ideal laboratories to investigate a variety of astrophysical topics, from the properties of the Galactic disk to stellar evolutionary models. Knowing the…
Enrichment of the Galactic disc with neutron capture elements: Sr
T. Mishenina, M. Pignatari, T. Gorbaneva +4
The enrichment history of heavy neutron-capture elements in the Milky Way disc provides fundamental information about the chemical evolution of our Galaxy and about the stellar sou…
Rise and fall of molecular clouds across the M33 disk
Edvige Corbelli, Jonathan Braine, Carlo Giovanardi
We carried out deep searches for CO line emission in the outer disk of M33, at R>7 kpc, and examined the dynamical conditions that can explain variations in the mass distribution o…