Publications (93)
Discovery of a variable lead-rich hot subdwarf: UVO 0825+15
C. S. Jeffery, A. S. Baran, N. T. Behara +8
UVO0825+15 is a hot bright helium-rich subdwarf which lies in {\it K2} Field 5 and in a sample of intermediate helium-rich subdwarfs observed with {\it Subaru/HDS}. The {\it K2} li…
Star formation in bar environments. II. Physical properties, age and abundances of HII regions
P. Martin, D. Friedli
The nebular properties (electronic density, extinction, age, O/H abundances) of HII regions found along the bars of the sample of barred spiral galaxies studied by Martin & Friedli…
Science with the Cherenkov Telescope Array
The Cherenkov Telescope Array Consortium, :, B. S. Acharya +580
The Cherenkov Telescope Array, CTA, will be the major global observatory for very high energy gamma-ray astronomy over the next decade and beyond. The scientific potential of CTA i…
Fluctuation-response theorem for the active noisy oscillator of the hair-cell bundle
L. Dinis, P. Martin, J. Barral +2
The hair bundle of sensory cells in the vertebrate ear provides an example of a noisy oscillator close to a Hopf bifurcation. The analysis of the data from both spontaneous and for…
A Herschel study of YSO evolutionary stages and formation timelines in two fields of the Hi-GAL survey
D. Elia, E. Schisano, S. Molinari +28
We present a first study of the star-forming compact dust condensations revealed by Herschel in the two 2 \times 2 \degr Galactic Plane fields centered at [l;b] = [30\degr; 0 \degr…
Near-infrared probing of embedded structures in starburst and Seyfert galaxies
D. Greusard, D. Friedli, H. Wozniak +2
Surface photometry in the J and K' bands of 15 southern Seyfert or starburst galaxies is presented. The detailed central morphology and structural properties of these objects were…
Response Uniformity of the ATLAS Liquid Argon Electromagnetic Calorimeter
M. Aharrouche, J. Colas, L. Di Ciaccio +99
The construction of the ATLAS electromagnetic liquid argon calorimeter modules is completed and all the modules are assembled and inserted in the cryostats. During the production p…
The Epidemics of Corruption
Ph. Blanchard, A. Krueger, T. Krueger +1
We study corruption as a generalized epidemic process on the graph of social relationships. The main difference to classical epidemic processes is the strong nonlinear dependence o…
Fermi-LAT detection of gamma-ray emission in the vicinity of the star forming regions W43 and Westerlund 2
M. Lemoine-Goumard, E. Ferrara, M. -H. Grondin +2
Particle acceleration in massive star forming regions can proceed via a large variety of possible emission scenarios, including high-energy gamma-ray production in the colliding wi…
Evidence of resonant surface wave excitation in the relativistic regime through measurements of proton acceleration from grating targets
T. Ceccotti, V. Floquet, A. Sgattoni +25
The interaction of laser pulses with thin grating targets, having a periodic groove at the irradiated surface, has been experimentally investigated. Ultrahigh contrast ($\sim 10^{1…
Herschel observations of embedded protostellar clusters in the Rosette Molecular Cloud
M. Hennemann, F. Motte, S. Bontemps +39
The Herschel OB young stellar objects survey (HOBYS) has observed the Rosette molecular cloud, providing an unprecedented view of its star formation activity. These new far-infrare…
Variations of the spectral index of dust emissivity from Hi-GAL observations of the Galactic plane
D. Paradis, M. Veneziani, A. Noriega-Crespo +14
Variations in the dust emissivity are critical for gas mass determinations derived from far-infrared observations, but also for separating dust foreground emission from the Cosmic…
Energetic feedback and Al from massive stars and their supernovae in the Carina region
R. Voss, P. Martin, R. Diehl +3
We study the populations of massive stars in the Carina region and their energetic feedback and ejection of Al. We did a census of the stellar populations in young stellar c…
The signature of 44Ti in Cassiopeia A revealed by IBIS/ISGRI on INTEGRAL
M. Renaud, J. Vink, A. Decourchelle +9
We report the detection of both the 67.9 and 78.4 keV 44Sc gamma-ray lines in Cassiopeia A with the INTEGRAL IBIS/ISGRI instrument. Besides the robustness provided by spectro-imagi…
Planck Early Results: Thermal dust in Nearby Molecular Clouds
Planck Collaboration, A. Abergel, P. A. R. Ade +197
Planck allows unbiased mapping of Galactic sub-millimetre and millimetre emission from the most diffuse regions to the densest parts of molecular clouds. We present an early analys…
Herschel-SPIRE spectroscopy of the DR21 molecular cloud core
Glenn J. White, A. Abergel, L. Spencer +47
We present far-infrared spectra and maps of the DR21 molecular cloud core between 196 and 671 microns, using the Herschel-SPIRE spectrometer. Nineteen molecular lines originating f…
Saturation of the compression of two interacting magnetic flux tubes evidenced in the laboratory
A. Sladkov, C. Fegan, W. Yao +16
Interactions between magnetic fields advected by matter play a fundamental role in the Universe at a diverse range of scales. A crucial role these interactions play is in making tu…
Cores in Infra-Red Dark Clouds (IRDCs) seen in the Hi-GAL survey between l = 300° and l = 330°
L. A. Wilcock, D. Ward-Thompson, J. M. Kirk +15
We have used data taken as part of the Herschel infrared Galactic Plane survey (Hi-GAL) to study 3171 infrared-dark cloud (IRDC) candidates that were identified in the mid-infrared…
The Herschel first look at protostars in the Aquila Rift
S. Bontemps, Ph. Andre, V. Konyves +40
As part of the science demonstration phase of the Herschel mission of the Gould Belt Key Program, the Aquila Rift molecular complex has been observed. The complete ~ 3.3deg x 3.3de…
First detection of the Methylidyne cation (CH+) fundamental rotational line with the Herschel/SPIRE FTS
D. A. Naylor, E. Dartois, E. Habart +41
Aims. To follow the species chemistry arising in diverse sources of the Galaxy with Herschel. Methods. SPIRE FTS sparse sampled maps of the Orion bar & compact HII regions G29.96-0…
The Herschel view of star formation in the Rosette molecular cloud under the influence of NGC 2244
N. Schneider, F. Motte, S. Bontemps +43
The Rosette molecular cloud is promoted as the archetype of a triggered star-formation site. This is mainly due to its morphology, because the central OB cluster NGC 2244 has blown…
Wolf-Rayet Stars in M33 II: Optical Spectroscopy of emission-line stars in Giant Hii Regions
L. Drissen, P. A. Crowther, L. Ubeda +1
We present optical spectra of 14 emission-line stars in M33s giant HII regions NGC 592, NGC 595 and NGC 604: five of them are known WR stars, for which we present a better quality…
Tidal dwarf candidates in a sample of interacting galaxies
Peter M. Weilbacher, P. -A. Duc, U. Fritze-v. Alvensleben +2
We present deep optical B, V, R images of a sample of 10 interacting systems which were selected for their resemblance to disturbed galaxies at high redshift. Photometry is perform…
The Luminosity-Metallicity Relation for Bulges of Spiral Galaxies
P. Jablonka, P. Martin, N. Arimoto
Optical integrated spectra of bulges have been obtained for 28 spiral galaxies. By applying an appropriate aperture size for each galaxy, the unavoidable contamination of disk star…
Spectral and intensity variations of Galactic 26^Al emission
W. Wang, M. G. Lang, R. Diehl +9
Gamma-ray line emission from the radioactive decay of 26Al reflects nucleosynthesis in massive stars and supernovae. We use INTEGRAL 26Al measurements to characterize the distribut…
Multi-point quasi-rational approximants for the energy eigenvalues of potentials of the form V(x)= Ax^a + Bx^b
P. Martin, A. De Freitas, E. Castro +1
Analytic approximants for the eigenvalues of the one-dimensional Schrödinger equation with potentials of the form are found using a multi-point quasi-rational…
Development of the Model of Galactic Interstellar Emission for Standard Point-Source Analysis of Fermi Large Area Telescope Data
F. Acero, M. Ackermann, M. Ajello +131
Most of the celestial gamma rays detected by the Large Area Telescope (LAT) aboard the Fermi Gamma-ray Space Telescope originate from the interstellar medium when energetic cosmic…
Surveys with the Cherenkov Telescope Array
G. Dubus, J. L. Contreras, S. Funk +9
Surveys open up unbiased discovery space and generate legacy datasets of long-lasting value. One of the goals of imaging arrays of Cherenkov telescopes like CTA is to survey areas…
Galactic annihilation emission from nucleosynthesis positrons
P. Martin, A. W. Strong, P. Jean +2
The Galaxy hosts a widespread population of low-energy positrons revealed by successive generations of gamma-ray telescopes through a bright annihilation emission from the bulge re…
Planck Early Results: The Galactic Cold Core Population revealed by the first all-sky survey
Planck Collaboration, P. A. R. Ade, N. Aghanim +202
We present the statistical properties of the first version of the Cold Core Catalogue of Planck Objects (C3PO), in terms of their spatial distribution, temperature, distance, mass,…
Cherenkov Telescope Array Contributions to the 35th International Cosmic Ray Conference (ICRC2017)
F. Acero, B. S. Acharya, V. AcÃn Portella +1137
List of contributions from the Cherenkov Telescope Array Consortium presented at the 35th International Cosmic Ray Conference, July 12-20 2017, Busan, Korea.
Galactic cold cores V. Dust opacity
M. Juvela, I. Ristorcelli, D. J. Marshall +14
The project Galactic Cold Cores has made Herschel observations of interstellar clouds where the Planck satellite survey has located cold and compact clumps. The sources range from…
From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt survey
Ph. André, A. Men'shchikov, S. Bontemps +54
We summarize the first results from the Gould Belt survey, obtained toward the Aquila Rift and Polaris Flare regions during the 'science demonstration phase' of Herschel. Our 70-50…
The initial conditions of high-mass star formation: radiative transfer models of IRDCs seen in the Herschel Hi-GAL survey
L. A. Wilcock, J. M. Kirk, D. Stamatellos +13
The densest infrared dark clouds (IRDCs) may represent the earliest observable stage of high-mass star formation. These clouds are very cold, hence they emit mainly at far-infrared…
Monte Carlo modelling of the propagation and annihilation of nucleosynthesis positrons in the Galaxy
A. Alexis, P. Jean, P. Martin +1
We want to estimate whether the positrons produced by the beta plus decay of 26Al, 44Ti and 56Ni synthesised in massive stars and supernovae are sufficient to explain the 511 keV a…
A new energy spectrum reconstruction method for Time-Of-Flight diagnostics of high-energy laser-driven protons
G. Milluzzo, V. Scuderi, A. Alejo +20
The Time-of-Flight (ToF) technique coupled with semiconductor-like detectors, as silicon carbide and diamond, is one of the most promising diagnostic methods for high-energy, high…
A New, Low Braking Index For the LMC Pulsar B0540-69
F. E. Marshall, L. Guillemot, A. K. Harding +2
We report the results of a 16-month monitoring campaign using the Swift satellite of PSR B0540-69, a young pulsar in the Large Magellanic Cloud. Phase connection was maintained thr…
Cluster-formation in the Rosette molecular cloud at the junctions of filaments
N. Schneider, T. Csengeri, M. Hennemann +31
For many years feedback processes generated by OB-stars in molecular clouds, including expanding ionization fronts, stellar winds, or UV-radiation, have been proposed to trigger su…
Herschel-SPIRE spectroscopy of G29.96-0.02: fitting the full SED
J. M. Kirk, E. Polehampton, L. D. Anderson +42
We use the SPIRE Fourier-Transform Spectrometer (FTS) on-board the ESA Herschel Space Telescope to analyse the submillimetre spectrum of the Ultra-compact HII region G29.96-0.02. S…
Discovery of the Galactic High-Mass Gamma-ray Binary 4FGL J1405.1-6119
R. H. D. Corbet, L. Chomiuk, M. J. Coe +8
We report the identification from multi-wavelength observations of the Fermi Large Area Telescope (LAT) source 4FGL J1405.1-6119 (= 3FGL J1405.4-6119) as a high-mass gamma-ray bina…
Object Serialization and Deserialization Using XML
J. -M. Le Goff, H. Stockinger, I. Willers +5
Interoperability of potentially heterogeneous databases has been an ongoing research issue for a number of years in the database community. With the trend towards globalization of…
Efficient ion re-acceleration in laboratory-produced interpenetrating collisionless shocks
W. Yao, I. Cohen, P. Suarez Gerona +20
Although the origin of cosmic rays (CRs) remains an open question, collisionless magnetized shock waves are widely regarded as key sites for particle acceleration. Recent theories…
Clouds, filaments and protostars: the Herschel Hi-GAL Milky Way
S. Molinari, B. Swinyard, J. Bally +121
We present the first results from the science demonstration phase for the Hi-GAL survey, the Herschel key-project that will map the inner Galactic Plane of the Milky Way in 5 bands…
HIFI observations of warm gas in DR21: Shock versus radiative heating
V. Ossenkopf, M. Röllig, R. Simon +35
The molecular gas in the DR21 massive star formation region is known to be affected by the strong UV field from the central star cluster and by a fast outflow creating a bright sho…
GammaLib and ctools: A software framework for the analysis of astronomical gamma-ray data
J. Knödlseder, M. Mayer, C. Deil +16
The field of gamma-ray astronomy has seen important progress during the last decade, yet there exists so far no common software framework for the scientific analysis of gamma-ray t…
Diprotodon on the sky. The Large Galactic Supernova Remnant (SNR) G278.94+1.35
Miroslav D. FilipoviÄ, S. LazareviÄ, M. Araya +41
We present a re-discovery of G278.94+1.35 as possibly one of the largest known Galactic supernova remnants (SNR) - that we name Diprotodon. While previously established as a Galact…
Science results from the imaging Fourier transform spectrometer SpIOMM
L. Drissen, A. -P. Bernier, M. Charlebois +5
SpIOMM is an imaging Fourier transform spectrometer designed to obtain the visible range (350 to 850 nm) spectrum of every light source in a circular field of view of 12 arcminutes…
Evidence of non collisional femtosecond laser electron heating in dielectric materials
G. Duchateau, B. Chimier, S. Coudert +7
Electron dynamics in the bulk of large band gap dielectric crystals induced by intense femtosecond laser pulses at 800 nm is studied. With laser intensities under the ablation thre…
Isolated starless cores in IRDCs in the Hi-GAL survey
L. A. Wilcock, D. Ward-Thompson, J. M. Kirk +15
In a previous paper we identified cores within infrared dark clouds (IRDCs). We regarded those without embedded sources as the least evolved, and labelled them starless. Here we id…
Global cosmic-ray related luminosity and energy budget of the Milky Way
A. W. Strong, T. A. Porter, S. W. Digel +4
We use the GALPROP code for cosmic-ray (CR) propagation to calculate the broad-band luminosity spectrum of the Milky Way related to CR propagation and interactions in the interstel…
CTA Contributions to the 34th International Cosmic Ray Conference (ICRC2015)
The CTA Consortium, :, A. Abchiche +1305
List of contributions from the CTA Consortium presented at the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The Netherlands.
Planck Early Results XXIV: Dust in the diffuse interstellar medium and the Galactic halo
Planck Collaboration, A. Abergel, P. A. R. Ade +205
This paper presents the first results of comparison of Planck along with IRAS data with Green Bank Telescope 21-cm observations in 14 fields covering more than 800 square degrees a…
The Aquila prestellar core population revealed by Herschel
V. Könyves, Ph. André, A. Men'shchikov +37
The origin and possible universality of the stellar initial mass function (IMF) is a major issue in astrophysics. One of the main objectives of the Herschel Gould Belt Survey is to…
A Herschel study of the properties of starless cores in the Polaris Flare dark cloud region using PACS and SPIRE
D. Ward-Thompson, J. M. Kirk, P. André +32
The Polaris Flare cloud region contains a great deal of extended emission. It is at high declination and high Galactic latitude. It was previously seen strongly in IRAS Cirrus emis…
The physical properties of the dust in the RCW 120 HII region as seen by Herschel
L. D. Anderson, A. Zavagno, J. A. Rodon +41
Context. RCW 120 is a well-studied, nearby Galactic HII region with ongoing star formation in its surroundings. Previous work has shown that it displays a bubble morphology at mid-…
Characterizing the structure of diffuse emission in Hi-GAL maps
D. Elia, F. Strafella, N. Schneider +18
We present a study of the structure of the Galactic interstellar medium through the Delta-variance technique, related to the power spectrum and the fractal properties of infrared/s…
On an algebraic approach to higher dimensional statistical mechanics
P. Martin, Herbert Saleur
We study representations of Temperley-Lieb algebras associated with the transfer matrix formulation of statistical mechanics on arbitrary lattices. We first discuss a new hyperfini…
Planck Early Results: The submillimetre properties of a sample of Galactic cold clumps
Planck Collaboration, P. A. R. Ade, N. Aghanim +201
(abridged) We perform a detailed investigation of sources from the Cold Cores Catalogue of Planck Objects (C3PO). Our goal is to probe the reliability of the detections, validate t…
GeV Observations of Star-forming Galaxies with \textit{Fermi} LAT
Fermi LAT Collaboration, M. Ackermann, M. Ajello +127
Recent detections of the starburst galaxies M82 and NGC 253 by gamma-ray telescopes suggest that galaxies rapidly forming massive stars are more luminous at gamma-ray energies comp…
Calibration of BAS-TR image plate response to GeV gold ions
D. Doria, P. Martin, H. Ahmed +17
The response of the BAS-TR image plate (IP) was absolutely calibrated using CR-39 track detector for high linear energy transfer (LET) Au ions up to 1.6 GeV (8.2 MeV/nucleon)…
Filamentary structures and compact objects in the Aquila and Polaris clouds observed by Herschel
A. Men'shchikov, Ph. André, P. Didelon +36
Our PACS and SPIRE images of the Aquila Rift and part of the Polaris Flare regions, taken during the science demonstration phase of Herschel discovered fascinating, omnipresent fil…
Experimental study of a liquid Xenon PET prototype module
M. -L. Gallin-Martel, P. Martin, F. Mayet +16
A detector using liquid Xenon in the scintillation mode is studied for Positron Emission Tomography (PET). The specific design aims at taking full advantage of the liquid Xenon pro…
Spatial variation of the cooling lines in the Orion Bar from Herschel/PACS
J. Bernard-Salas, E. Habart, H. Arab +8
We present spatially resolved Herschel/PACS observations of the Orion Bar. We have characterise the emission of the far-infrared fine-structure lines of [CII] (158um), [OI] (63 and…
Multiple emission components in the Cygnus cocoon detected from Fermi-LAT observations
X. Astiasarain, L. Tibaldo., P. Martin +2
Star-forming regions may play an important role in the life cycle of Galactic cosmic rays. Gamma-ray observations of Cygnus X have revealed the presence of an excess of hard-spectr…
Non-linear Symmetry-preserving Observer on Lie Groups
S. Bonnabel, P. Martin, P. Rouchon
In this paper we give a geometrical framework for the design of observers on finite-dimensional Lie groups for systems which possess some specific symmetries. The design and the er…
Contributions of the Cherenkov Telescope Array (CTA) to the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016)
The CTA Consortium, :, A. Abchiche +1387
List of contributions from the Cherenkov Telescope Array (CTA) Consortium presented at the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016), July 11-15,…
The origin of the [C II] emission in the S140 PDRs - new insights from HIFI
C. Dedes, M. Röllig, B. Mookerjea +38
Using Herschel's HIFI instrument we have observed [C II] along a cut through S140 and high-J transitions of CO and HCO+ at two positions on the cut, corresponding to the externally…
Arginine-rich peptides destabilize the plasma membrane, consistent with a pore formation translocation mechanism of cell penetrating peptides
H. D. Herce, A. E. Garcia, J. Litt +5
Recent molecular dynamics simulations (Herce and Garcia, PNAS, 104: 20805 (2007)) have suggested that the arginine-rich HIV Tat peptides might be able to translocate by destabilizi…
A Luminous Gamma-ray Binary in the Large Magellanic Cloud
R. H. D. Corbet, L. Chomiuk, M. J. Coe +9
Gamma-ray binaries consist of a neutron star or a black hole interacting with a normal star to produce gamma-ray emission that dominates the radiative output of the system. Only a…
Planck Early Results XVIII: The power spectrum of cosmic infrared background anisotropies
Planck Collaboration, P. A. R. Ade, N. Aghanim +202
Using Planck maps of six regions of low Galactic dust emission with a total area of about 140 square degrees, we determine the angular power spectra of cosmic infrared background (…
Discovery of a Spin-Down State Change in the LMC Pulsar B0540-69
F. E. Marshall, L. Guillemot, A. K. Harding +2
We report the discovery of a large, sudden, and persistent increase in the spin-down rate of B0540-69, a young pulsar in the Large Magellanic Cloud, using observations from the Swi…
CTA contributions to the 33rd International Cosmic Ray Conference (ICRC2013)
The CTA Consortium, :, O. Abril +1102
Compilation of CTA contributions to the proceedings of the 33rd International Cosmic Ray Conference (ICRC2013), which took place in 2-9 July, 2013, in Rio de Janeiro, Brazil
A 100-parsec elliptical and twisted ring of cold and dense molecular clouds revealed by Herschel around the Galactic Center
S. Molinari, J. Bally, A. Noriega-Crespo +38
Thermal images of cold dust in the Central Molecular Zone of the Milky Way, obtained with the far-infrared cameras on-board the Herschel satellite, reveal a 3x10^7 solar masses rin…
Two Mass Distributions in the L 1641 Molecular Clouds: The Herschel connection of Dense Cores and Filaments in Orion A
D. Polychroni, E. Schisano, D. Elia +23
We present the Herschel Gould Belt survey maps of the L1641 molecular clouds in Orion A. We extracted both the filaments and dense cores in the region. We identified which of dense…
Galactic cold cores II. Herschel study of the extended dust emission around the first Planck detections
M. Juvela, I. Ristorcelli, V. -M. Pelkonen +15
Within the project Galactic Cold Cores we are carrying out Herschel photometric observations of cold interstellar clouds detected with the Planck satellite. The three fields observ…
Search for Extended GeV Sources in the Inner Galactic Plane
S. Abdollahi, F. Acero, A. Acharyya +108
The recent detection of extended -ray emission around middle-aged pulsars is interpreted as inverse-Compton scattering of ambient photons by electron-positron pairs escaping th…
GePEToS : A Geant4 Monte Carlo simulation package for Positron Emission Tomography
S. Jan, J. Collot, M. -L. Gallin-Martel +3
GePEToS is a simulation framework developed over the last few years for assessing the instrumental performance of future PET scanners. It is based on Geant4, written in Object-Orie…
Characterizing Precursors to Stellar Clusters with Herschel
C. Battersby, J. Bally, A. Ginsburg +9
Context: Despite their profound effect on the universe, the formation of massive stars and stellar clusters remains elusive. In the past decade, compelling evidence has emerged tha…
Physical properties of the Sh2-104 HII region as seen by Herschel
J. A. Rodón, A. Zavagno, J. -P. Baluteau +46
Context: Sh2-104 is a Galactic H ii region with a bubble morphology, detected at optical and radio wavelengths. It is considered the first observational confirmation of the collect…
Characterizing interstellar filaments with Herschel in IC5146
D. Arzoumanian, Ph. André, P. Didelon +21
We provide a first look at the results of the Herschel Gould Belt survey toward the IC5146 molecular cloud and present a preliminary analysis of the filamentary structure in this r…
The M 31 double nucleus probed with OASIS and HST. A natural m=1 mode?
R. Bacon, E. Emsellem, F. Combes +3
We present observations with the adaptive optics assisted integral field spectrograph OASIS of the M 31 double nucleus at a spatial resolution better than 0.5 arcsec FWHM. These da…
The LOFAR Multifrequency Snapshot Sky Survey (MSSS) I. Survey description and first results
G. H. Heald, R. F. Pizzo, E. Orrú +147
We present the Multifrequency Snapshot Sky Survey (MSSS), the first northern-sky LOFAR imaging survey. In this introductory paper, we first describe in detail the motivation and de…
First year of coordinated science observations by Mars Express and ExoMars 2016 Trace Gas Orbiter
A. Cardesin-Moinelo, B. Geiger, G. Lacombe +8
In this paper we describe the first combined observations executed by the Mars Express and Trace Gas Orbiter missions since the start of the TGO operational phase in April 2018 unt…
Kinematics of Subluminous O and B Stars by Surface Helium Abundance
P. Martin, C. S. Jeffery, Naslim N. +1
The majority of hot subdwarf stars are low-mass core-helium-burning stars. Their atmospheres are generally helium deficient; however a minority have extremely helium-rich surfaces.…
The chemical state of complex uranium oxides
K. O. Kvashnina, S. M. Butorin, P. Martin +1
We report here the first direct observation of U(V) in uranium binary oxides and analyze the gradual conversion of the U oxidation state in the mixed uranium systems. Our finding c…
An Empirical Test and Calibration of H II Region Diagnostics
R. C. Kennicutt, F. Bresolin, H. French +1
We present spectrophotometry in the 3600-9700 A region for a sample of 39 H II regions in the Galaxy and Magellanic Clouds, for which independent information is available on the sp…
The distribution, kinematics and luminosities of extreme helium stars as probes of their origin and evolution
A. Philip Monai, P. Martin, C. S. Jeffery
Hydrogen deficient stars include the cool R CrB variable (RCBs) and hydrogen-deficient carbon (HdCs) giants through extreme helium stars (EHes) to the very hot helium-rich subdwarf…
Strong CH+ J=1-0 emission and absorption in DR21
E. Falgarone, V. Ossenkopf, M. Gerin +30
We report the first detection of the ground-state rotational transition of the methylidyne cation CH+ towards the massive star-forming region DR21 with the HIFI instrument onboard…
Mapping the column density and dust temperature structure of IRDCs with Herschel
N. Peretto, G. A. Fuller, R. Plume +22
Infrared dark clouds (IRDCs) are cold and dense reservoirs of gas potentially available to form stars. Many of these clouds are likely to be pristine structures representing the in…
Small-scale structure in the Rosette molecular cloud revealed by Herschel
J. Di Francesco, S. Sadavoy, F. Motte +40
We present a preliminary analysis of the small-scale structure found in new 70-520 micron continuum maps of the Rosette molecular cloud (RMC), obtained with the SPIRE and PACS inst…
Prospects for and Implications of Measuring the Higgs to Photon-Photon Branching Ratio at the Next Linear Collider
J. F. Gunion, P. Martin
We evaluate the prospects for measuring for a Standard-Model-like Higgs boson at the Next Linear Collider in the and $e^+e^-\toν_e\a…
Herschel Observations of a Potential Core Forming Clump: Perseus B1-E
S. I. Sadavoy, J. Di Francesco, Ph. Andre +17
We present continuum observations of the Perseus B1-E region from the Herschel Gould Belt Survey. These Herschel data reveal a loose grouping of substructures at 160 - 500 micron n…
Planck Early Results: All sky temperature and dust optical depth from Planck and IRAS: Constraints on the "dark gas" in our galaxy
Planck Collaboration, P. A. R. Ade, N. Aghanim +204
We construct an all-sky map of the apparent temperature and optical depth of thermal dust emission using the Planck-HFI and IRAS data. The optical depth maps are correlated to trac…