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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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34 papers · 2 filters
A characterization of the diffuse Galactic emissions in the anti-center of the Galaxy
L. Fauvet, J. F. Macias-Perez, S. R. Hildebrandt +1
Using the Archeops and WMAP data we perform a study of the anti-center Galactic diffuse emissions - thermal dust, synchrotron, free-free and anomalous emission - at degree scales.…
The Abundance, Ortho/Para Ratio, and Deuteration of Water in the High-Mass Star Forming Region NGC 6334 I
M. Emprechtinger, D. C. Lis, R. Rolffs +6
We present Herschel/HIFI observations of 30 transitions of water isotopologues toward the high-mass star forming region NGC 6334 I. The line profiles of H_2^{16}O, H_2^{17}O, H_2^{…
Water ice deuteration: a tracer of the chemical history of protostars
Vianney Taquet, Phillip Peters, Claudine Kahane +5
Context. Millimetric observations have measured high degrees of molecular deuteration in several species seen around low-mass protostars. The Herschel Space Telescope, launched in…
On the function describing the stellar initial mass function
Thomas Maschberger
We propose a functional form for the IMF, the L_3 IMF, which is a natural heavy-tailed approximation to the log-normal distribution. It is composed of a low-mass power law and a hi…
Herschel CHESS discovery of the fossil cloud that gave birth to the Trapezium and Orion KL
Ana López-Sepulcre, Mihkel Kama, Cecilia Ceccarelli +4
As part of the Herschel Guaranteed Time Key Programme CHESS, we present the discovery of a diffuse gas component in the foreground of the intermediate-mass protostar OMC-2 FIR 4, l…
The Herschel DIGIT Survey of Weak-line T Tauri Stars: implications for disk evolution and dissipation
Lucas A. Cieza, Johan Olofsson, Paul M. Harvey +8
As part of the "Dust, Ice, and Gas In Time (DIGIT)" Herschel Open Time Key Program, we present Herschel photometry (at 70, 160, 250, 350 and 500 micron) of 31 Weak-Line T Tauri sta…
Spectroscopy of brown dwarf candidates in IC 348 and the determination of its substellar IMF down to planetary masses
C. Alves de Oliveira, E. Moraux, J. Bouvier +4
Context. Brown dwarfs represent a sizable fraction of the stellar content of our Galaxy and populate the transition between the stellar and planetary mass regime. There is however…
Herschel/PACS Spectroscopic Survey of Protostars in Orion: The Origin of Far-Infrared CO Emission
P. Manoj, D. M. Watson, D. A. Neufeld +14
We present far-IR (57-196 mu) spectra of 21 protostars in the Orion molecular clouds, obtained with the Photodetector Array Camera and Spectrometer (PACS) onboard the Herschel Spac…
High SiO abundance in the HH212 protostellar jet
Sylvie Cabrit, Claudio Codella, Frédéric Gueth +1
Previous SiO maps of the innermost regions of HH212 set strong constraints on the structure and origin of this jet. They rule out a fast wide-angle wind, and tentatively favor a ma…
Radiation thermo-chemical models of protoplanetary discs. IV Modelling CO ro-vibrational emission from Herbig Ae discs
Wing-Fai Thi, Inga Kamp, Peter Woitke +3
The carbon monoxide rovibrational emission from discs around Herbig Ae stars and T Tauri stars with strong ultraviolet emissions suggests that fluorescence pumping from the ground…
Our astrochemical heritage
Paola Caselli, Cecilia Ceccarelli
Our Sun and planetary system were born about 4.5 billion years ago. How did this happen and what is our heritage from these early times? This review tries to address these question…
On the influence of collisional rate coefficients on the water vapour excitation
F. Daniel, J. R. Goicoechea, J. Cernicharo +2
Water is a key molecule in many astrophysical studies. Its high dipole moment makes this molecule to be subthermally populated under the typical conditions of most astrophysical ob…
Molecular line survey of the high-mass star-forming region NGC 6334I with Herschel/HIFI and the SMA
A. Zernickel, P. Schilke, A. Schmiedeke +7
We aim at deriving the molecular abundances and temperatures of the hot molecular cores in the high-mass star-forming region NGC 6334I and consequently deriving their physical and…
Nitrogen hydrides in interstellar gas II. Analysis of Herschel/HIFI observations towards W49N and G10.6-0.4 (W31C)
C. M. Persson, M. De Luca, B. Mookerjea +14
We have used the Herschel-HIFI instrument to observe interstellar nitrogen hydrides along the sight-lines towards W49N and G10.6-0.4 in order to elucidate the production pathways l…
The Earliest Phases of Star Formation (EPoS): A Herschel Key Program - The precursors to high-mass stars and clusters
Sarah Ragan, Thomas Henning, Oliver Krause +14
(Abridged) We present an overview of the sample of high-mass star and cluster forming regions observed as part of the Earliest Phases of Star Formation (EPoS) Herschel Guaranteed T…
A search for mass segregation of stars and brown dwarfs in ρ Ophiuchi
Richard J. Parker, Thomas Maschberger, Catarina Alves de Oliveira
We apply two different algorithms to search for mass segregation to a recent observational census of the rho Ophiuchi star forming region. Firstly, we apply the Lambda_MSR method,…
Hydrogen Fluoride in High-Mass Star-forming Regions
Martin Emprechtinger, Raquel R. Monje, Floris F. S. van der Tak +5
Hydrogen fluoride has been established to be an excellent tracer of molecular hydrogen in diffuse clouds. In denser environments, however, the HF abundance has been shown to be app…
GASPS observations of Herbig Ae/Be stars with PACS/Herschel. The atomic and molecular content of their protoplanetary discs
G. Meeus, B. Montesinos, I. Mendigutia +3
We observed a sample of 20 representative Herbig Ae/Be stars and five A-type debris discs with PACS onboard of Herschel. The observations were done in spectroscopic mode, and cover…
870 micron Imaging of a Transitional Disk in Upper Scorpius: Holdover from the Era of Giant Planet Formation?
Geoffrey S. Mathews, Jonathan P. Williams, Francois Menard
We present 880 micron images of the transition disk around the star [PZ99] J160421.7-213028, a solar-mass star in the nearby Upper Scorpius association. With a resolution down to 0…
Close encounters of the protostellar kind in IC 1396N
M. T. Beltran, F. Massi, F. Fontani +2
We have mapped in the 2.7 mm continuum and 12CO with the PdBI the IR-dark "tail" that crosses the IC 1396N globule from south to north, and is the most extincted part of this cloud…
VLTI/AMBER observations of the Seyfert nucleus of NGC 3783
G. Weigelt, K. -H. Hofmann, M. Kishimoto +9
Context. The putative tori surrounding the accretion disks of active galactic nuclei (AGNs) play a fundamental role in the unification scheme of AGNs. Infrared long-baseline interf…
Molecular abundances in the inner layers of IRC +10216
M. Agundez, J. P. Fonfria, J. Cernicharo +3
Observations towards IRC +10216 of CS, SiO, SiS, NaCl, KCl, AlCl, AlF, and NaCN have been carried out with the IRAM 30-m telescope in the 80-357.5 GHz frequency range. A large numb…
Model of the polarized foreground diffuse Galactic emissions from 33 to 353 GHz
L. Fauvet, J. F. Macías-Pérez, F. X. Désert
We present 3D models of the Galactic magnetic field including regular and turbulent components, and of the distribution of matter in the Galaxy including relativistic electrons and…
The submillimeter spectrum of deuterated glycolaldehydes
A. Bouchez, L. Margules, R. A. Motiyenko +5
Glycolaldehyde, a sugar-related interstellar prebiotic molecule, has recently been detected in two star-forming regions, Sgr B2(N) and G31.41+0.31. The detection of this new specie…