Publications (319)
Molecular cloud catalogue from CO(1-0) data of the Forgotten Quadrant Survey
M. Benedettini, A. Traficante, L. Olmi +13
New-generation spectroscopic surveys of the Milky Way plane have been revealing the structure of the interstellar medium, allowing the simultaneous study of dense structures from s…
Planetesimal formation via the streaming instability in simulations of infall dominated young disks
L. -A. Hühn, C. P. Dullemond, U. Lebreuilly +7
Protoplanetary disks naturally emerge during protostellar core-collapse. In their early evolutionary stages, infalling material dominates their dynamical evolution. In the context…
A Multi-Wavelength Analysis of Dust and Gas in the SR 24S Transition Disk
P. Pinilla, L. M. Pérez, S. Andrews +9
We present new Atacama Large Millimeter/sub-millimeter Array (ALMA) 1.3 mm continuum observations of the SR 24S transition disk with an angular resolution (12 au ra…
Influence of protostellar outflows on star and protoplanetary disk formation in a massive star-forming clump
U. Lebreuilly, P. Hennebelle, A. Maury +5
Context. Due to the presence of magnetic fields, protostellar jets/outflows are a natural consequence of accretion onto protostars. They are expected to play an important role for…
ALMA sub-mm maser and dust distribution of VY Canis Majoris
A. M. S. Richards, C. M. V. Impellizzeri, E. M. Humphreys +25
Cool, evolved stars have copious, enriched winds. The structure of these winds and the way they are accelerated is not well known. We need to improve our understanding by studying…
Synthetic dust polarization emission maps at 353 GHz for an observer placed inside a Local Bubble-like cavity
E. Maconi, J. D. Soler, S. Reissl +10
We present a study of synthetic observations of polarized dust emission at 353 GHz as seen by an observer within a cavity in the interstellar medium (ISM). The cavity is selected f…
Nitrogen fractionation in high-mass star-forming cores across the Galaxy
L. Colzi, F. Fontani, V. M. Rivilla +4
The fractionation of nitrogen (N) in star-forming regions is a poorly understood process. To put more stringent observational constraints on the N-fractionation, we have observed w…
ALMA polarimetric studies of rotating jet/disk systems
F. Bacciotti, J. M. Girart, M. Padovani +9
We have recently obtained polarimetric data at mm wavelengths with ALMA for the young systems DG Tau and CW Tau, for which the rotation properties of jet and disk have been investi…
The Herschel Gould Belt Survey in Chamaeleon II - Properties of cold dust in disks around young stellar objects
L. Spezzi, N. L. J. Cox, T. Prusti +14
We report on the Herschel Gould Belt survey (HGBS) of ChaII, focusing on the detection of Class I to III young stellar objects (YSOs). We aim at characterizing the circumstellar ma…
The ALMA Lupus protoplanetary disk survey: evidence for compact gas disks and molecular rings from CN
S. E. van Terwisga, E. F. van Dishoeck, P. Cazzoletti +10
The cyanide radical CN is abundant in protoplanetary disks, with line fluxes often comparable to those of CO. It is known to be sensitive to UV irradiation of the upper disk…
V1094 Sco: a rare giant multi-ringed disk around a T Tauri star
S. E. van Terwisga, E. F. van Dishoeck, M. Ansdell +11
A wide variety of ring-like dust structures has been detected in protoplanetary disks, but their origin and frequency are still unclear. We characterize the structure of an extende…
Herschel Reveals Massive Cold Clumps in NGC 7538
C. Fallscheer, M. A. Reid, J. Di Francesco +29
We present the first overview of the Herschel observations of the nearby high-mass star-forming region NGC 7538, taken as part of the Herschel imaging study of OB Young Stellar obj…
Mass ejection and time variability in protostellar outflows: Cep E. SOLIS XVI
A. de A. Schutzer, P. R. Rivera-Ortiz, B. Lefloch +46
Protostellar jets are an important agent of star formation feedback, tightly connected with the mass-accretion process. The history of jet formation and mass-ejection provides cons…
Brown dwarf disks with ALMA
L. Ricci, L. Testi, A. Natta +3
We present ALMA continuum and spectral line data at 0.89 mm and 3.2 mm for three disks surrounding young brown dwarfs and very low mass stars in the Taurus star forming region. Dus…
Seeds of Life in Space (SOLIS).VII. Discovery of a cold dense methanol blob toward the L1521F VeLLO system
C. Favre, C. Vastel, I. Jimenez-Serra +40
The SOLIS (Seeds Of Life In Space) IRAM/NOEMA Large Program aims at studying a set of crucial complex organic molecules in a sample of sources, with well-known physical structure,…
A Community Science Case for E-ELT HIRES
R. Maiolino, M. Haehnelt, M. T. Murphy +57
Building on the experience of the high-resolution community with the suite of VLT high-resolution spectrographs, which has been tremendously successful, we outline here the (scienc…
The sulfur depletion problem: upper limits on the H2S2, HS2, and S2 gas-phase abundances toward the low-mass warm core IRAS16293-2422
R. MartÃn-Doménech, I. Jiménez-Serra, G. M. Muñoz Caro +5
A fraction of the missing sulfur in dense clouds and circumstellar regions could be in the form of three species not yet de- tected in the interstellar medium: H2S2, HS2, and S2 ac…
Absorption Filaments Towards the Massive Clump G0.253+0.016
John Bally, J. M. Rathborne, S. N. Longmore +11
ALMA HCO+ observations of the infrared dark cloud G0.253+0.016 located in the Central Molecular Zone of the Galaxy are presented. The 89 GHz emission is area-filling, optically thi…
Exploring the Lower Mass Function in the young open Cluster IC 4665
W. J. de Wit, J. Bouvier, F. Palla +8
We present a study of the young (30-100Myr) open cluster IC 4665 with the aim to determine the shape of the mass function well into the brown dwarf regime. We photometrically selec…
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…
The fragmentation properties of massive protocluster gas clumps: an ALMA study
F. Fontani, B. Commerçon, A. Giannetti +5
Fragmentation of massive dense molecular clouds is the starting point in the formation of rich clusters and massive stars. Theory and numerical simulations indicate that the popula…
Bipolar molecular outflow of the very low-mass star Par-Lup3-4
A. SantamarÃa-Miranda, I. de Gregorio-Monsalvo, N. Huélamo +7
Very low-mass stars are known to have jets and outflows, which is indicative of a scaled-down version of low-mass star formation. However, only very few outflows in very low-mass s…
A giant planet shaping the disk around the very low-mass star CIDA 1
P. Curone, A. F. Izquierdo, L. Testi +13
(Abridged) Exoplanetary research has provided us with exciting discoveries of planets around very low-mass (VLM) stars (e.g., TRAPPIST-1 and Proxima Centauri). However, current the…
X-Shooter study of accretion in Chamaeleon I: II. A steeper increase of accretion with stellar mass for very low mass stars?
C. F. Manara, L. Testi, G. J. Herczeg +10
The dependence of the mass accretion rate on the stellar properties is a key constraint for star formation and disk evolution studies. Here we present a study of a sample of stars…
The protoplanetary disk population in the rho-Ophiuchi region L1688 and the time evolution of Class II YSOs
L. Testi, A. Natta, C. F. Manara +10
(Abridged) We present a study of the disk population in L1688, the densest and youngest region in Ophiuchus, and we compare it with other nearby regions of different age, namely Lu…
The SEDIGISM survey: first data release and overview of the Galactic structure
F. Schuller, J. S. Urquhart, T. Csengeri +57
The SEDIGISM (Structure, Excitation and Dynamics of the Inner Galactic Interstellar Medium) survey used the APEX telescope to map 84 deg^2 of the Galactic plane between l = -60 deg…
VLA observations of the disk around the young brown dwarf 2MASS J044427+2512
L. Ricci, H. Rome, P. Pinilla +3
We present multi-wavelength radio observations obtained with the VLA of the protoplanetary disk surrounding the young brown dwarf 2MASS J04442713+2512164 (2M0444) in the Taurus sta…
The Nature of the Massive Young Stars in W75 N
D. S. Shepherd, S. E. Kurtz, L. Testi
We have observed the W75 N massive star forming region in SiO(J=2-1 & J=1-0) at 3" - 5" resolution and in 6 cm, 2 cm, and 7 mm continuum emission at 1.4" - 0.2" resolution. The abu…
FAUST IX. Multi-band, multi-scale dust study of L1527 IRS. Evidence for dust properties variations within the envelope of a Class 0/I YSO
L. Cacciapuoti, E. Macias, A. J. Maury +25
Early dust grain growth in protostellar envelopes infalling on young discs has been suggested in recent studies, supporting the hypothesis that dust particles start to agglomerate…
An ATCA survey of debris disks at 7 millimeters
L. Ricci, S. T. Maddison, D. Wilner +4
We present ATCA continuum observations at a wavelength of 6.8 mm of five debris disks: Pictoris, q Eridani, HD 107146, HD 181327, and HD 95086. These observations provide…
The ATLASGAL survey: a catalog of dust condensations in the Galactic plane
T. Csengeri, J. S. Urquhart, F. Schuller +10
The formation processes and the evolutionary stages of high-mass stars are poorly understood compared to low-mass stars. Large-scale surveys are needed to provide an unbiased censu…
The chemistry of star and planet formation with SKA
C. Codella, L. Testi, G. Umana +2
In this contribution, we aim to summarise the efforts of the Italian SKA scientific community in conducting surveys of star-forming regions within our Galaxy, in the development of…
Characterizing young protostellar disks with the CALYPSO IRAM-PdBI survey: large Class 0 disks are rare
A. J. Maury, Ph. André, L. Testi +15
Understanding the formation mechanisms of protoplanetary disks and multiple systems, and their pristine properties, is a key question for modern astrophysics. The properties of the…
Fomalhaut debris disk emission at 7 millimeters: constraints on the collisional models of planetesimals
L. Ricci, L. Testi, S. T. Maddison +1
We present new spatially resolved observations of the dust thermal emission at 7 mm from the Fomalhaut debris disk obtained with the Australia Telescope Compact Array. These observ…
ATLASGAL - The APEX Telescope Large Area Survey of the Galaxy at 870 microns
F. Schuller, K. M. Menten, Y. Contreras +31
(Abridged) Studying continuum emission from interstellar dust is essential to locating and characterizing the highest density regions in the interstellar medium. In particular, the…
Angular momentum profiles of Class 0 protostellar envelopes
M. Gaudel, A. J. Maury, A. Belloche +10
[abridged] Understanding how the infalling gas redistribute most of its initial angular momentum inherited from prestellar cores before reaching the stellar embryo is a key questio…
Constraining disk evolution prescriptions of planet population synthesis models with observed disk masses and accretion rates
C. F. Manara, C. Mordasini, L. Testi +4
While planets are commonly discovered around main-sequence stars, the processes leading to their formation are still far from being understood. Current planet population synthesis…
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…
Detection of methylisocyanate (CH3NCO) in a solar-type protostar
R. MartÃn-Doménech, V. Rivilla, I. Jiménez-Serra +3
We report the detection of the prebiotic molecule CH3NCO in a solar-type protostar, IRAS16293-2422 B. A significant abundance of this species on the surface of the comet 67P/Churyu…
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…
The SEDIGISM survey: Molecular clouds in the inner Galaxy
A. Duarte-Cabral, D. Colombo, J. S. Urquhart +57
We use the 13CO(2-1) emission from the SEDIGISM high-resolution spectral-line survey of the inner Galaxy, to extract the molecular cloud population with a large dynamic range in sp…
Homogeneous Analysis of the Dust Morphology of Transition Disks Observed with ALMA: Investigating dust trapping and the origin of the cavities
P. Pinilla, M. Tazzari, I. Pascucci +11
We analyze the dust morphology of 29 transition disks (TDs) observed with ALMA at (sub-) millimeter-emission. We perform the analysis in the visibility plane to characterize the to…
Star formation in clusters: early sub-clustering in the Serpens core
L. Testi, A. I. Sargent, L. Olmi +1
We present high resolution interferometric and single dish observations of molecular gas in the Serpens cluster-forming core. Star formation does not appear to be homogeneous throu…
High-Resolution ALMA Observations of HD100546: Asymmetric Circumstellar Ring, and Circumplanetary Disk Upper Limits
J. E. Pineda, J. Szulágyi, S. P. Quanz +7
We present long baseline Atacama Large Millimeter/submillimeter Array (ALMA) observations of the 870m dust continuum emission and CO (3-2) from the protoplanetary disk around…
The accretion luminosity of Class I protostars
L. Testi, A. Natta, S. Gozzi +7
The value of the accretion luminosity during the early phases of star formation is a crucial information which helps us understand how stars form, yet it is still very difficult to…
Near Infrared Spectra of the Orion Bar
A. Marconi, L. Testi, A. Natta +1
We have used the LONGSP spectrometer on the 1.5-m TIRGO telescope to obtain long slit spectra in the J, H, and K wavelength bands towards two positions along the Orion bar. These d…
On the shape of the mass-function of dense clumps in the Hi-GAL fields. I. SED determination and global properties of the mass-functions
L. Olmi, D. Angles-Alcazar, D. Elia +11
Stars form in dense, dusty clumps of molecular clouds, but little is known about their origin and evolution. In particular, the relationship between the mass distribution of these…
On the gas content of transitional disks: a VLT/X-Shooter study of accretion and winds
C. F. Manara, L. Testi, A. Natta +4
Transitional disks (TDs) are thought to be a late evolutionary stage of protoplanetary disks with dust depleted inner regions. The mechanism responsible for this depletion is still…
High-contrast imaging of HD 163296 with the Keck/NIRC2 L'-band vortex coronograph
G. Guidi, G. Ruane, J. P. Williams +16
We present observations of the nearby (D100\,pc) Herbig star HD~163296 taken with the vortex coronograph at Keck/NIRC2 in the L' band (3.7~m), to search for planetary mas…
The Origin of Massive O-type Field Stars. Part I: A Search for Clusters
W. J. de Wit, L. Testi, F. Palla +2
We present a study aimed at clarifying the birthplace for 43 massive O-type field stars. In this first paper we present the observational part: a search for stellar clusters near t…
Accretion in rho-Ophiuchi brown dwarfs: infrared hydrogen line ratios
T. Gatti, L. Testi, A. Natta +2
Mass accretion rate determinations are fundamental for an understanding of the evolution of pre-main sequence star circumstellar disks. Magnetospheric accretion models are used to…
Substructures in the Keplerian disc around the O-type (proto)star G17.64+0.16
L. T. Maud, R. Cesaroni, M. S. N. Kumar +20
We present the highest angular resolution (20x15mas - 44x33au) Atacama Large Millimeter/sub-millimeter Array (ALMA) observations currently possible of the proto-O-star G17.64+0.16…
The Herschel view of massive star formation in G035.39--00.33: Dense and cold filament of W48 undergoing a mini-starburst
Q. Nguyen Luong, F. Motte, M. Hennemann +29
The filament IRDC G035.39--00.33 in the W48 molecular complex is one of the darkest infrared clouds observed by \textit{Spitzer}. It has been observed by the PACS (70 and 160\,$\mi…
VLA cm-wave survey of young stellar objects in the Oph A cluster: constraining extreme UV- and X-ray-driven disk photo-evaporation -- A pathfinder for Square Kilometre Array studies
A. Coutens, H. B. Liu, I. Jiménez-Serra +28
Observations of young stellar objects (YSOs) in centimeter bands can probe the continuum emission from growing dust grains, ionized winds, and magnetospheric activity, which are in…
Discovery of an Accretion Burst in a Free-Floating Planetary-Mass Object
V. Almendros-Abad, A. Scholz, B. Damian +7
We report the discovery of a long-lasting burst of disk accretion in Cha J11070768-7626326 (Cha 1107-7626), a young, isolated, 5-10 M object. In spectra taken…
Synthetic populations of protoplanetary disks. Impact of magnetic fields and radiative transfer
U. Lebreuilly, P. Hennebelle, T. Colman +10
Protostellar disks are the product of angular momentum conservation during the protostellar collapse. Understanding their formation is crucial because they are the birthplace of pl…
Molecular gas kinematics within the central 250 pc of the Milky Way
J. D. Henshaw, S. N. Longmore, J. M. D. Kruijssen +23
Using spectral-line observations of HNCO, N2H+, and HNC, we investigate the kinematics of dense gas in the central ~250 pc of the Galaxy. We present SCOUSE (Semi-automated multi-CO…
ALMA survey of massive cluster progenitors from ATLASGAL. Limited fragmentation at the early evolutionary stage of massive clumps
T. Csengeri, S. Bontemps, F. Wyrowski +18
The early evolution of massive cluster progenitors is poorly understood. We investigate the fragmentation properties from 0.3 pc to 0.06 pc scales of a homogenous sample of infrare…
Milli-arcsecond astrophysics with VSI, the VLTI spectro-imager in the ELT era
F. Malbet, D. Buscher, G. Weigelt +49
Nowadays, compact sources like surfaces of nearby stars, circumstellar environments of stars from early stages to the most evolved ones and surroundings of active galactic nuclei c…
Understanding discs in binary YSOs: detailed modelling of VV CrA
P. Scicluna, S. Wolf, T. Ratzka +6
Given that a majority of stars form in multiple systems, in order to fully understand the star- and planet-formation processes we must seek to understand them in multiple stellar s…
Results from DROXO. II. - [Ne II] and X-ray emission from Rho Ophiuchi young stellar objects
E. Flaccomio, B. Stelzer, S. Sciortino +3
The infrared [Ne II] and [Ne III] fine structure lines at 12.81um and 15.55um are predicted to trace the circumstellar disk gas subject to X-ray heating and ionization. We investig…
Chasing discs around O-type (proto)stars - ALMA evidence for an SiO disc and disc wind from G17.64+0.16
L. T. Maud, R. Cesaroni, M. S. N. Kumar +28
We present high angular resolution 0.2 arcsec continuum and molecular emission line Atacama Large Millimeter/sub-millimeter Array (ALMA) observations of G17.64+0.16 in Band 6 (220G…
First results from the Herschel Gould Belt Survey in Taurus
J. M. Kirk, D. Ward-Thompson, P. Palmeirim +26
The whole of the Taurus region (a total area of 52 sq. deg.) has been observed by the Herschel SPIRE and PACS instruments at wavelengths of 70, 160, 250, 350 and 500 μm as part of…
Characterising the high-mass star forming filament G351.776--0.527 with Herschel and APEX dust continuum and gas observations
S. Leurini, E. Schisano, T. Pillai +13
G351.776-0.527 is among the most massive, closest, and youngest filaments in the inner Galactic plane and therefore it is an ideal laboratory to study the kinematics of dense gas a…
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…
Molecular hydrogen in the circumstellar environments of Herbig Ae/Be stars probed by FUSE
C. Martin-Zaidi, M. Deleuil, J. Le Bourlot +7
We observed molecular hydrogen around a sample of pre-main sequence stars in order to better characterize their gaseous CS environments. We analyzed the FUSE (Far Ultraviolet Spect…
Infrared and Millimetric Study of the Young Outflow Cepheus E
A. Moro-Martin, A. Noriega-Crespo, S. Molinari +3
The Cepheus E outflow has been studied in the mid and far infrared using the ISO CAM and LWS instruments, and at millimetric wavelengths using OVRO. In the near and mid-IR, its mor…
Searching for massive pre--stellar cores through observations of N2H+ and N2D+
F. Fontani, P. Caselli, A. Crapsi +4
We have measured the deuterium fractionation (through the column density ratio N(N2D+)/N(N2H+)) and the CO depletion factor (ratio between expected and observed CO abundance) in a…
Physical properties of dusty protoplanetary disks in Lupus: evidence for viscous evolution?
M. Tazzari, L. Testi, A. Natta +9
The formation of planets strongly depends on the total amount as well as on the spatial distribution of solids in protoplanetary disks. Thanks to the improvements in resolution and…
Complex organic molecules in protostellar environments in the SKA era
C. Codella, L. Podio, F. Fontani +10
Molecular complexity builds up at each step of the Sun-like star formation process, starting from simple molecules and ending up in large polyatomic species. Complex organic molecu…
Italian Science Case for ALMA Band 2+3
M. T. Beltran, E. Bianchi, J. Brand +18
The Premiale Project "Science and Technology in Italy for the upgraded ALMA Observatory - iALMA" has the goal of strengthening the scientific, technological and industrial Italian…
Dynamical Accretion Flows -- ALMAGAL: Flows along filamentary structures in high-mass star-forming clusters
M. R. A. Wells, H. Beuther, S. Molinari +47
We use data from the ALMA Evolutionary Study of High Mass Protocluster Formation in the Galaxy (ALMAGAL) survey to study 100 ALMAGAL regions at 1 arsecond resolution located…
Jet multiplicity in the proto-binary system NGC1333-IRAS4A. The detailed CALYPSO IRAM-PdBI view
G. Santangelo, C. Codella, S. Cabrit +10
Owing to the paucity of sub-arcsecond (sub)mm observations required to probe the innermost regions of newly forming protostars, several fundamental questions are still being debate…
The Pillars of Creation revisited with MUSE: gas kinematics and high-mass stellar feedback traced by optical spectroscopy
A. F. Mc Leod, J. E. Dale, A. Ginsburg +4
Integral field unit (IFU) data of the iconic Pillars of Creation in M16 are presented. The ionisation structure of the pillars was studied in great detail over almost the entire vi…
A cluster in the making: ALMA reveals the initial conditions for high-mass cluster formation
J. M. Rathborne, S. N. Longmore, J. M. Jackson +9
G0.253+0.016 is a molecular clump that appears to be on the verge of forming a high mass, Arches-like cluster. Here we present new ALMA observations of its small-scale (~0.07 pc) 3…
The pre-ZAMS nature of Mol160/IRAS23385+6053 confirmed by Spitzer
S. Molinari, F. Faustini, L. Testi +3
Determining the timeline for the formation of massive YSOs requires the identification and characterisation of all the phases that a massive forming YSO undergoes. It is of particu…
Revealing the dust grain size in the inner envelope of the Class I protostar Per-emb-50
C. Agurto-Gangas, J. E. Pineda, L. Szucs +7
A good constraint of when the growth of dust grains from sub-micrometer to millimeter sizes occurs, is crucial for planet formation models. This provides the first step towards the…
First detection of the pre-biotic molecule glycolonitrile (HOCH2CN) in the interstellar medium
S. Zeng, D. Quénard, I. Jiménez-Serra +4
Theories of a pre-RNA world suggest that glycolonitrile (HOCHCN) is a key species in the process of ribonucleotide assembly, which is considered as a molecular precursor of nuc…
The Science Case for ALMA Band 2 and Band 2+3
G. A. Fuller, A. Avison, M. Beltran +18
We discuss the science drivers for ALMA Band 2 which spans the frequency range from 67 to 90 GHz. The key science in this frequency range are the study of the deuterated molecules…
A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster
G. Beccari, M. G. Petr-Gotzens, H. M. J. Boffin +15
As part of the Accretion Discs in H with OmegaCAM (ADHOC) survey, we imaged in r, i and H-alpha a region of 12x8 square degrees around the Orion Nebula Cluster. Thanks to the h…
FAUST. XXVIII. High-Resolution ALMA Observations of Class 0/I Disks: Structure, Optical Depths, and Temperatures
M. J. Maureira, J. E. Pineda, H. B. Liu +22
We present high-resolution (~7.5 au) ALMA observations at 1.3 and 3 mm of 16 disks around Class 0/I protostars across multiple star-forming regions and a variety of multiplicities,…
Gas vs. solid phase deuterated chemistry: HDCO and DCO in massive star-forming regions
S. Zahorecz, I. Jimenez-Serra, L. Testi +5
The formation of deuterated molecules is favoured at low temperatures and high densities. Therefore, the deuteration fraction D is expected to be enhanced in cold, dense p…
The formation of the solar system
S. Pfalzner, M. B. Davies, M. Gounelle +7
The solar system started to form about 4.56 Gyr ago and despite the long intervening time span, there still exist several clues about its formation. The three major sources for thi…
Evidence of a SiO collimated outflow from a massive YSO in IRAS 17233-3606
S. Leurini, C. Codella, A. Gusdorf +4
Studies of molecular outflows in high-mass young stellar objects reveal important information about the formation process of massive stars. We therefore selected the close-by IRAS…
SOLIS II. Carbon-chain growth in the Solar-type protocluster OMC2-FIR4
F. Fontani, C. Ceccarelli, C. Favre +42
The interstellar delivery of carbon atoms locked into molecules might be one of the key ingredients for the emergence of life. Cyanopolyynes are carbon chains delimited at their tw…
ALMA imaging of the CO snowline of the HD 163296 disk with DCO+
G. S. Mathews, P. D. Klaassen, A. Juhasz +11
The high spatial and line sensitivity of ALMA opens the possibility of resolving emission from molecules in circumstellar disks. With an understanding of physical conditions under…
Clustered Star Formation in W75 N
D. S. Shepherd, L. Testi, D. P. Stark
We present 2" to 7" resolution 3 mm continuum and CO(J=1-0) line emission and near infrared Ks, H2, and [FeII] images toward the massive star forming region W75 N. The CO emission…
Brown dwarf disks with ALMA: evidence for truncated dust disks in Ophiuchus
L. Testi, A. Natta, A. Scholz +3
The study of the properties of disks around young brown dwarfs can provide important clues on the formation of these very low-mass objects and on the possibility of forming planeta…
Bright C2H emission in protoplanetary disks in Lupus: high volatile C/O>1 ratios
A. Miotello, S. Facchini, E. F. van Dishoeck +6
ALMA surveys have shown that CO emission in protoplanetary disks is much fainter than expected. Accordingly, CO-based gas masses and gas/dust ratios are orders of magnitude lower t…
The EChO science case
Giovanna Tinetti, Pierre Drossart, Paul Eccleston +347
The discovery of almost 2000 exoplanets has revealed an unexpectedly diverse planet population. Observations to date have shown that our Solar System is certainly not representativ…
Dust and Gas environment of the young embedded cluster IRAS 18511+0146
S. Vig, L. Testi, C. M. Walmsley +2
IRAS 18511+0146 is a young embedded (proto)cluster located at 3.5 kpc surrounding what appears to be an intermediate mass protostar. In this paper, we investigate the nature of clu…
Direct constraint on the distance of y2 Velorum from AMBER/VLTI observations
F. Millour, R. G. Petrov, O. Chesneau +95
In this work, we present the first AMBER observations, of the Wolf-Rayet and O (WR+O) star binary system y2 Velorum. The AMBER instrument was used with the telescopes UT2, UT3, and…
Nature of two massive protostellar candidates: IRAs 21307+5049 and IRAS 22172+5549
F. Fontani, R. Cesaroni, L. Testi +4
We present observations of continuum and molecular lines towards the protostar candidates IRAS 21307+5049 and IRAS 22172+5549. Single-dish maps in the 12CO(2--1), C18O(2--1), HCO+(…
Can habitable planets form in clustered environments?
M. de Juan Ovelar, J. M. D. Kruijssen, E. Bressert +3
We present observational evidence of environmental effects on the formation and evolution of planetary systems. We combine catalogues of resolved protoplanetary discs (PPDs) and yo…
First AMBER/VLTI observations of hot massive stars
R. G. Petrov, F. Millour, O. Chesneau +45
AMBER is the first near infrared focal instrument of the VLTI. It combines three telescopes and produces spectrally resolved interferometric measures. This paper discusses some pre…
Measuring the ratio of the gas and dust emission radii of protoplanetary disks in the Lupus star-forming region
E. Sanchis, L. Testi, A. Natta +15
We perform a comprehensive demographic study of the CO extent relative to dust of the disk population in the Lupus clouds, in order to find indications of dust evolution and possib…
Detection of Knots and Jets in IRAS 06061+2151
B. G. Anandarao, A. Chakraborty, D. K. Ojha +1
We report detection of a Young Stellar Object with an evidence for an outflow in the form of knots in the molecular hydrogen emission line (2.121 micron) towards the massive star f…
An HST Imaging Survey of Low-Mass Stars in the Chamaeleon I Star Forming region
M. Robberto, L. Spina, N. Da Rio +7
We present new HST/WFPC2 observations of 20 fields centered around T Tauri stars in the Chamaeleon I star forming region. Images have been obtained in the F631N ([OI]6300A), F656N…
Explanatory Supplement of the ISOGAL-DENIS Point Source Catalogue
F. Schuller, S. Ganesh, M. Messineo +10
We present version 1.0 of the ISOGAL-DENIS Point Source Catalogue (PSC), containing more than 100,000 point sources detected at 7 and/or 15 micron in the ISOGAL survey of the inner…
ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT) III: The interplay between gas and dust in the protoplanetary disk of DG Tau
L. Podio, A. Garufi, C. Codella +9
Planets form in protoplanetary disks and inherit their chemical composition. It is therefore crucial to understand the disks molecular content. We aim to characterize the distribut…