611 citations · 2k across the 20 of their papers we have counts for
20 papers
Phase correction for ALMA - Investigating water vapour radiometer scaling:The long-baseline science verification data case study
L. T. Maud, R. P. J. Tilanus, T. A. van Kempen +9
The Atacama Large millimetre/submillimetre Array (ALMA) makes use of water vapour radiometers (WVR), which monitor the atmospheric water vapour line at 183 GHz along the line of si…
The Herschel-HIFI view of mid-IR quiet massive protostellar objects
F. Herpin, L. Chavarria, T. Jacq +9
We present Herschel/HIFI observations (WISH KP) of 14 water lines in a small sample of galactic massive protostellar objects: NGC6334I(N), DR21(OH), IRAS16272-4837, and IRAS05358+3…
An Ammonia Spectral Map of the L1495-B218 Filaments in the Taurus Molecular Cloud : I. Physical Properties of Filaments and Dense cores
Young Min Seo, Yancy L. Shirley, Paul Goldsmith +8
We present deep NH observations of the L1495-B218 filaments in the Taurus molecular cloud covering over a 3 degree angular range using the K-band focal plane array on the 100m…
Water in Low-Mass Star-Forming Regions with Herschel: The Link Between Water Gas and Ice in Protostellar Envelopes
M. Schmalzl, R. Visser, C. Walsh +4
Aims: Our aim is to determine the critical parameters in water chemistry and the contribution of water to the oxygen budget by observing and modelling water gas and ice for a sampl…
The Earliest Phases of Star formation (EPoS): Temperature, density, and kinematic structure of the star-forming core CB 17
M. Schmalzl, R. Launhardt, A. M. Stutz +7
Context: The initial conditions for the gravitational collapse of molecular cloud cores and the subsequent birth of stars are still not well constrained. The characteristic cold te…
ALMA continuum observations of a 30 Myr old gaseous debris disk around HD 21997
A. Moór, A. Juhász, Á. Kóspál +10
Circumstellar disks around stars older than 10 Myr are expected to be gas-poor. There are, however, two examples of old (30-40 Myr) debris-like disks containing a detectable amount…
ALMA observations of the molecular gas in the debris disk of the 30 Myr old star HD 21997
Á. Kóspál, A. Moór, A. Juhász +9
The 30 Myr old A3-type star HD 21997 is one of the two known debris dust disks having a measurable amount of cold molecular gas. With the goal of understanding the physical state,…
Waterfalls around protostars: Infall motions towards Class 0/I envelopes as probed by water
J. C. Mottram, E. F. van Dishoeck, M. Schmalzl +4
Abridged abstract: For stars to form, material must fall inwards from core scales through the envelope towards the central protostar. The velocity profile around protostars is poor…
Gas-phase CO depletion and N2H+ abundances in starless cores
N. Lippok, R. Launhardt, D. Semenov +10
Seven isolated, nearby low-mass starless molecular cloud cores have been observed as part of the Herschel key program Earliest Phases of Star formation (EPoS). By applying a ray-tr…
A Major Asymmetric Dust Trap in a Transition Disk
Nienke van der Marel, Ewine F. van Dishoeck, Simon Bruderer +9
The statistics of discovered exoplanets suggest that planets form efficiently. However, there are fundamental unsolved problems, such as excessive inward drift of particles in prot…
ALMA detection of the rotating molecular disk wind from the young star HD 163296
P. D. Klaassen, A. Juhasz, G. S. Mathews +12
Disk winds have been postulated as a mechanism for angular momentum release in protostellar systems for decades. HD 163296 is a Herbig Ae star surrounded by a disk and has been sho…
The earliest phases of star formation - A Herschel key project. The thermal structure of low-mass molecular cloud cores
R. Launhardt, A. M. Stutz, A. Schmiedeke +19
The temperature and density structure of molecular cloud cores are the most important physical quantities that determine the course of the protostellar collapse and the properties…
ALMA CO J=6-5 observations of IRAS16293-2422: Shocks and entrainment
L. E. Kristensen, P. D. Klaassen, J. C. Mottram +2
Observations of higher-excited transitions of abundant molecules such as CO are important for determining where energy in the form of shocks is fed back into the parental envelope…
Detection of the simplest sugar, glycolaldehyde, in a solar-type protostar with ALMA
Jes K. Jorgensen, Cecile Favre, Suzanne E. Bisschop +3
Glycolaldehyde (HCOCH2OH) is the simplest sugar and an important intermediate in the path toward forming more complex biologically relevant molecules. In this paper we present the…
SMA and Spitzer Observations of Bok Glouble CB17: A Candidate First Hydrostatic Core?
Xuepeng Chen, Hector G. Arce, Michael M. Dunham +5
We present high angular resolution SMA and Spitzer observations toward the Bok globule CB17. SMA 1.3mm dust continuum images reveal within CB17 two sources with an angular separati…
Star formation in the Taurus filament L1495: From Dense Cores to Stars
Markus Schmalzl, Jouni Kainulainen, Sascha P. Quanz +6
We present a study of dense structures in the L1495 filament in the Taurus Molecular Cloud and examine its star-forming properties. In particular we construct a dust extinction map…
L1448 IRS2E: A candidate first hydrostatic core
Xuepeng Chen, Hector G. Arce, Qizhou Zhang +4
Intermediate between the prestellar and Class 0 protostellar phases, the first core is a quasi-equilibrium hydrostatic object with a short lifetime and an extremely low luminosity.…
Looking into the hearts of Bok globules: MM and submm continuum images of isolated star-forming cores
R. Launhardt, D. Nutter, D. Ward-Thompson +6
We present the results of a comprehensive infrared, submillimetre, and millimetre continuum emission study of isolated low-mass star-forming cores in 32 Bok globules, with the aim…
The Initial Mass Function of the Stellar Association NGC 602 in the Small Magellanic Cloud with Hubble Space Telescope ACS Observations
Markus Schmalzl, Dimitrios A. Gouliermis, Andrew E. Dolphin +1
We present our photometric study of the stellar association NGC 602 in the wing of the Small Magellanic Cloud (SMC). The data were taken in the filters F555W and F814W using the Ad…
A Hubble View of Star Forming Regions in the Magellanic Clouds
D. A. Gouliermis, Th. Henning, W. Brandner +13
The Magellanic Clouds (MCs) offer an outstanding variety of young stellar associations, in which large samples of low-mass stars (with masses less than 1 solar mass) currently in t…