10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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29 papers · 2 filters
Star formation towards the Galactic HII region RCW120
M. Figueira, A. Zavagno, L. Deharveng +16
The expansion of HII regions can trigger the formation of stars. An overdensity of young stellar objects (YSOs) is observed at the edges of HII regions but the mechanisms that give…
Spiral-driven accretion in protoplanetary discs - III tri-dimensional simulations
Patrick Hennebelle, Geoffroy Lesur, Sébastien Fromang
Understanding how accretion proceeds in proto-planetary discs and more generally their dynamics is a crucial issue for explaining the conditions in which planets form. The role tha…
Hot methanol from the inner region of the HH 212 protostellar system
S. Leurini, C. Codella, S. Cabrit +9
The mechanisms leading to the formation of disks around young stellar objects (YSOs) and to the launching of the associated jets are crucial to the understanding of the earliest st…
History of the solar-type protostar IRAS16293-2422 as told by the cyanopolyynes
A. A. Jaber, C. Ceccarelli, C. Kahane +9
Cyanopolyynes are chains of carbon atoms with an atom of hydrogen and a CN group on either side. They are detected almost everywhere in the ISM, as well as in comets. In the past,…
Tracing extended low-velocity shocks through SiO emission - Case study of the W43-MM1 ridge
F. Louvet, F. Motte. A. Gusdorf, Q. Nguyen-Luong +7
Previous literature suggests that the densest structures in the interstellar medium form through colliding flows, but patent evidence of this process is still missing. Recent liter…
First image of the L1157 molecular jet by the CALYPSO IRAM-PdBI survey
L. Podio, C. Codella, F. Gueth +12
Fast jets are thought to be a crucial ingredient of star formation because they might extract angular momentum from the disk and thus allow mass accretion onto the star. However, i…
Mass estimates for very cold (< 8 K) gas in molecular cloud cores
Juergen Steinacker, Hendrik Linz, Henrik Beuther +2
The mass of prestellar cores is an essential ingredient to understand the onset of star formation in the core. The low level of emission from cold dust may keep parts of it hidden…
A Search for O_2 in CO-depleted Molecular Cloud Cores with Herschel
Eva S. Wirström, Steven B. Charnley, Martin A. Cordiner +1
The general lack of molecular oxygen in molecular clouds is an outstanding problem in astrochemistry. Extensive searches with SWAS, Odin and Herschel have only produced two detecti…
H2S in the L1157-B1 Bow shock
Jonathan Holdship, Serena Viti, Izaskun Jimenez-Serra +8
Sulfur-bearing molecules are highly reactive in the gas phase of the ISM. However, the form in which most of the sulfur is locked onto interstellar dust grains is unknown. By takin…
Phosphorus-bearing molecules in solar-type star forming regions: First PO detection
B. Lefloch, C. Vastel, S. Viti +7
As part of the Large Program ASAI (Astrochemical Surveys At IRAM), we have used the IRAM 30m telescope to lead a systematic search for the emission of rotational transitions of P-b…
Diagnosing shock temperature with NH and HO profiles
A. I. Gómez-Ruiz, C. Codella, S. Viti +9
In a previous study of the L1157 B1 shocked cavity, a comparison between NH(1-) and HO(1--1) transitions showed a striking difference in the…
Prestellar core modeling in the presence of a filament - The dense heart of L1689B
Juergen Steinacker, Aurore Bacmann, Thomas Henning +1
Short version: We apply a new synergetic radiative transfer method: the derived 1D density profiles are both consistent with a cut through the Herschel PACS/SPIRE and JCMT SCUBA-2…
Multiwavelength campaign on Mrk 509 XV. A global modeling of the broad emission lines in the Optical, UV and X-ray bands
E. Costantini, G. Kriss, J. S. Kaastra +11
We model the broad emission lines present in the optical, UV and X-ray spectra of Mrk 509, a bright type 1 Seyfert galaxy. The broad lines were simultaneously observed during a lar…
The problematic growth of dust in high redshift galaxies
Andrea Ferrara, Serena Viti, Cecilia Ceccarelli
Dust growth via accretion of gas species has been proposed as the dominant process to increase the amount of dust in galaxies. We show here that this hypothesis encounters severe d…
Ionization fraction and the enhanced sulfur chemistry in Barnard 1
A. Fuente, J. Cernicharo, E. Roueff +7
Barnard B1b has revealed as one of the most interesting globules from the chemical and dynamical point of view. It presents a rich molecular chemistry characterized by large abunda…
Abundance of HOCO+ and CO2 in the outer layers of the L1544 prestellar core
Charlotte Vastel, Cecilia Ceccarelli, Bertrand Lefloch +1
The L1544 prestellar core has been observed as part of the ASAI IRAM Large Program at 3 mm. These observations led to the detection of many complex molecules. In this Letter, we re…
Collisional excitation of HC3N by para- and ortho-H2
A. Faure, F. Lique, L. Wiesenfeld
New calculations for rotational excitation of cyanoacetylene by collisions with hydrogen molecules are performed to include the lowest 38 rotational levels of HC3N and kinetic temp…
The scaling relations and star formation laws of ministarburst complexes
Quang Nguyen-Luong, Hans V. V. Nguyen, Fredérique Motte +7
The scaling relations and the star formation laws for molecular cloud complexes in the Milky Way is investigated. We compare their masses , mass surface densities $Σ_{…
Probing the CO and methanol snow lines in young protostars. Results from the CALYPSO IRAM-PdBI survey
S. Anderl, S. Maret, S. Cabrit +9
Context. "Snow lines", marking regions where abundant volatiles freeze out onto the surface of dust grains, play an important role for planet growth and bulk composition in protopl…
Deuteration of ammonia in the starless core Ophiuchus/H-MM1
Jorma Harju, Fabien Daniel, Olli Sipilä +13
Ammonia and its deuterated isotopologues probe physical conditions in dense molecular cloud cores. With the aim of testing the current understanding of the spin-state chemistry of…
Hubble-Lemaître fragmentation and the path to equilibrium of merger-driven cluster formation
Julien Dorval, Christian M. Boily, Estelle Moraux +2
This paper discusses a new method to generate self-coherent initial conditions for young substructured stellar cluster. The expansion of a uniform system allows stellar sub-structu…
NH and NNH towards the prestellar core 16293E in L1689N
F. Daniel, A. Faure, L. Pagani +6
Understanding the processes that could lead to enrichment of molecules in N atoms is of particular interest in order to shed light on the relatively large variations observe…
Cosmic Dust VII
Hiroshi Kimura, Ludmilla Kolokolova, Aigen Li +3
This is an editorial to the special issue on Cosmic Dust VII.
Detection of protonated formaldehyde in the prestellar core L1689B
A. Bacmann, E. García-García, A. Faure
Complex organic molecules (COMs) are detected in many regions of the interstellar medium, including prestellar cores. However, their formation mechanisms in cold (~10 K) cores rema…