Publications (37)
SKA-Athena Synergy White Paper
R. Cassano, R. Fender, C. Ferrari +35
The Advanced Telescope for High Energy Astrophysics (Athena) is the X-ray observatory large mission selected by the European Space Agency (ESA), within its Cosmic Vision 2015-2025…
Orion revisited III. The Orion Belt population
K. Kubiak, J. Alves, H. Bouy +11
This paper continues our study of the foreground population to the Orion molecular clouds. The goal is to characterize the foreground population north of NGC 1981 and to investigat…
The Role of Pressure in the Structure and Stability of GMCs in the Andromeda Galaxy
C. J. Lada, J. Forbrich, M. R. Krumholz +1
We revisit the role of pressure in the structure, stability and confinement of Giant Molecular Clouds (GMCs) in light of recently published observations and analysis of the GMCs in…
SKA Science Data Challenge 2: analysis and results
P. Hartley, A. Bonaldi, R. Braun +105
The Square Kilometre Array Observatory (SKAO) will explore the radio sky to new depths in order to conduct transformational science. SKAO data products made available to astronomer…
YSOVAR: the first sensitive, wide-area, mid-IR photometric monitoring of the ONC
M. Morales-Calderón, J. R. Stauffer, L. A. Hillenbrand +33
We present initial results from time series imaging at infrared wavelengths of 0.9 sq. degrees in the Orion Nebula Cluster (ONC). During Fall 2009 we obtained 81 epochs of Spitzer…
Dense gas and star formation in individual Giant Molecular Clouds in M31
S. Viaene, J. Forbrich, J. Fritz
Studies both of entire galaxies and of local Galactic star formation indicate a dependency of a molecular cloud's star formation rate (SFR) on its dense gas mass. In external galax…
Short- and long-term variability of young stars in the Orion Nebula Cluster and Molecular Cloud
V. M. Rivilla, C. J. Chandler, J. Sanz-Forcada +3
We used the Very Large Array to carry out a multi-epoch radio continuum monitoring of the Orion Nebula Cluster and Orion Molecular Cloud. Our observations reveal the presence of 19…
The First VLBI Detection of an Ultracool Dwarf: Implications for the Detectability of Sub-stellar Companions
J. Forbrich, E. Berger
We present milliarcsecond-resolution radio very long baseline interferometry (VLBI) observations of the ultracool dwarfs TVLM513-46546 (M8.5) and 2MASS J00361617+1821104 (L3.5) in…
IRAS 20050+2720: Anatomy of a young stellar cluster
H. M. Guenther, S. J. Wolk, B. Spitzbart +7
IRAS 20050+2720 is young star forming region at a distance of 700 pc without apparent high mass stars. We present results of our multiwavelength study of IRAS 20050+2720 which incl…
Serendipitous discovery of a dusty disc around WDJ181417.84-735459.83
E. González Egea, R. Raddi, D. Koester +8
Spectroscopic observations of white dwarfs reveal that many of them are polluted by exoplanetary material, whose bulk composition can be uniquely probed this way. We present a spec…
ALMA detects a radial disk wind in DG Tau
M. Guedel, C. Eibensteiner, O. Dionatos +7
Aims: We aim to use the high spatial resolution of the Atacama Large Millimeter/submillimeter Array (ALMA) to map the flow pattern of molecular gas near DG Tau and its disk, a youn…
Beyond the Solar Circle Trends in Massive Star Formation Between the Inner and Outer Galaxy
J. O. Djordjevic, M. A. Thompson, J. S. Urquhart +1
We have compiled the most complete compact and ultracompact HII region catalogue to date via multi-wavelength inspection of survey data. We utilise data from the recently available…
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…
An ALMA study of the Orion Integral Filament: I. Evidence for narrow fibers in a massive cloud
A. Hacar, M. Tafalla, J. Forbrich +4
Abridged. Are all filaments bundles of fibers? To address this question, we have investigated the gas organization within the paradigmatic Integral Shape Filament (ISF). We combine…
The Relationship Between the Dust and Gas-Phase CO Across the California Molecular Cloud
S. Kong, C. J. Lada, E. A. Lada +5
A deep, wide-field, near-infrared imaging survey was used to construct an extinction map of the southeastern part of the California Molecular Cloud (CMC) with 0.5 arc min re…
Synchrotron emission from the T Tauri binary system V773 Tau A
M. Massi, J. Forbrich, K. M. Menten +4
The pre-main sequence binary system V773 Tau A shows remarkable flaring activity around periastron passage. Here, we present the observation of such a flare at a wavelength of 3 mm…
Gathering dust: A galaxy-wide study of dust emission from cloud complexes in NGC 300
M. Riener, C. M. Faesi, J. Forbrich +1
We used multi-band observations by the Herschel Space Observatory to study the dust emission properties of the nearby spiral galaxy NGC 300. We compiled a first catalogue of the po…
The distance to the Orion Nebula
K. M. Menten, M. J. Reid, J. Forbrich +1
We have used the Very Long Baseline Array to measure the trigonometric parallax of several member stars of the Orion Nebula Cluster showing non-thermal radio emission. We have dete…
YSOVAR: Mid-infrared Variability Among YSOs in the Star Formation Region GGD 12-15
Scott J. Wolk, H. Moritz Günther, Katja Poppenhaeger +9
We present an IR-monitoring survey with the Space Telescope of the star forming region GGD 12-15. Over 1000 objects were monitored including about 350 objects within the…
A rotating disk around the very young massive star AFGL 490
K. Schreyer, D. Semenov, Th. Henning +1
We observed the embedded, young 8--10 Msun star AFGL 490 at subarcsecond resolution with the Plateau de Bure Interferometer in the C17O (2--1) transition and found convincing evide…
Non-thermal radio continuum emission from young nearby stars
R. Launhardt, L. Loinard, S. A. Dzib +5
Young and magnetically active low-mass stars often exhibit non-thermal coronal radio emission due to the gyration of electrons in their magnetized chromospheres. This emission is e…
The Curious Case of the "Heartworm" Nebula
W. D. Cotton, F. Camilo, W. Becker +9
The curious Galactic features near G357.20.2 were observed with the MeerKAT radio interferometer array in the UHF and L bands (0.56--1.68 GHz). There are two possibly related fe…
UYSO 1 - An Extremely Young Massive Stellar Object
J. Forbrich, K. Schreyer, B. Posselt +2
In the course of a comprehensive mm/submm survey of massive star-forming regions, a particularly interesting object has been found in the surroundings of the bright FIR source IRAS…
VVV-WIT-01: highly obscured classical nova or protostellar collision?
P. W. Lucas, D. Minniti, A. Kamble +18
A search of the first Data Release of the VISTA Variables in the Via Lactea (VVV) Survey discovered the exceptionally red transient VVV-WIT-01 (). It peaked before March…
YSOVAR: mid-infrared variability of young stellar objects and their disks in the cluster IRAS 20050+2720
K. Poppenhaeger, A. M. Cody, K. R. Covey +12
We present a time-variability study of young stellar objects in the cluster IRAS 20050+2720, performed at 3.6 and 4.5 micron with the Spitzer Space Telescope; this study is part of…
YSOVAR: Mid-Infrared Variability in NGC 1333
L. M. Rebull, J. R. Stauffer, A. M. Cody +17
As part of the Young Stellar Object VARiability (YSOVAR) program, we monitored NGC 1333 for ~35 days at 3.6 and 4.5 um using the Spitzer Space Telescope. We report here on the mid-…
Simultaneous X-ray, radio, near-infrared, and optical monitoring of Young Stellar Objects in the Coronet cluster
J. Forbrich, Th. Preibisch, K. M. Menten +11
Multi-wavelength (X-ray to radio) monitoring of Young Stellar Objects (YSOs) can provide important information about physical processes at the stellar surface, in the stellar coron…
ALMA survey of Class II protoplanetary disks in Corona Australis: a young region with low disk masses
P. Cazzoletti, C. F. Manara, H. B. Liu +20
In recent years, the disk populations in a number of young star-forming regions have been surveyed with ALMA. Understanding the disk properties and their correlation with those of…
Ammonia in the interstellar medium of a starbursting disc at z=2.6
M. J. Doherty, J. E. Geach, R. J. Ivison +4
We report the detection of the ground state rotational emission of ammonia, ortho-NH in a gravitationally lensed, intrinsically hyperluminous, star-bu…
Star and Stellar Cluster Formation: ALMA-SKA Synergies
G. A. Fuller, J. Forbrich, J. M. Rathborne +2
Over the next decade, observations conducted with ALMA and the SKA will reveal the process of mass assembly and accretion onto young stars and will be revolutionary for studies of…
A Millimeter Continuum Survey for Massive Protoclusters in the Outer Galaxy
R. Klein, B. Posselt, K. Schreyer +2
Our search for the earliest stages of massive star formation turned up twelve massive pre-protocluster candidates plus a few protoclusters. For this search, we selected 47 FIR-brig…
Time-resolved protoplanetary disk physics in DQ Tau with JWST
Ã. Kóspál, P. Ãbrahám, V. V. Akimkin +17
Accretion variability is ubiquitous in YSOs. While large outbursts may strongly affect the disk, the effects of moderate bursts are less understood. We aim to study the physical re…
Emergence of high-mass stars in complex fiber networks (EMERGE). I. Early ALMA Survey: observations and massive data reduction
A. Hacar, A. Socci, F. Bonanomi +10
(Abridged) Recent molecular surveys have revealed a rich gas organization of sonic-like fibers in all kind of environments prior to the formation of low- and high-mass stars. This…
A systematic survey of millimetre-wavelength flaring variability of Young Stellar Objects in the Orion Nebula Cluster
J. Vargas-González, J. Forbrich, V. M. Rivilla +3
High-energy processes are ubiquitous even in the earliest stages of protostellar evolution. Motivated by the results of our systematic search for intense centimeter radio flares in…
Periodic Radio Emission from the M7 Dwarf 2MASS J13142039+1320011: Implications for the Magnetic Field Topology
M. McLean, E. Berger, J. Irwin +2
We present multi-epoch radio and optical observations of the M7 dwarf 2MASS J13142039+1320011. We detect a ~1 mJy source at 1.43, 4.86, 8.46 and 22.5 GHz, making it the most lumino…
Young Stellar Object Variability (YSOVAR): Long Timescale Variations in the Mid-Infrared
L. M. Rebull, A. M. Cody, K. R. Covey +32
The YSOVAR (Young Stellar Object VARiability) Spitzer Space Telescope observing program obtained the first extensive mid-infrared (3.6 & 4.5 um) time-series photometry of the Orion…
APOGEE strings: a fossil record of the gas kinematic structure
A. Hacar, J. Alves, J. Forbrich +3
We compare APOGEE radial velocities (RVs) of young stars in the Orion A cloud with CO line gas emission and find a correlation between the two at large-scales, in agreement with pr…