220 citations · 1k across the 20 of their papers we have counts for
21 papers
How much large dust could be present in hot exozodiacal dust systems?
T. A. Stuber, F. Kirchschlager, T. D. Pearce +3
An infrared excess over the stellar photospheric emission of main-sequence stars has been found in interferometric surveys, commonly attributed to the presence of hot exozodiacal d…
Using debris disk observations to infer substellar companions orbiting within or outside a parent planetesimal belt
T. A. Stuber, T. Löhne, S. Wolf
Aims. We analyze whether the effects of secular perturbations, originating from a substellar companion, on the dust dynamics in a debris disk can be investigated with spatially res…
Impact of planetesimal eccentricities and material strength on the appearance of eccentric debris disks
Minjae Kim, Sebastian Wolf, Torsten Löhne +2
Context: Since circumstellar dust in debris disks is short-lived, dust-replenishing requires the presence of a reservoir of planetesimals. These planetesimals in the parent belt of…
Magnetic fields in circumstellar disks: The potential of Zeeman observations
R. Brauer, S. Wolf, M. Flock
Context. Recent high angular resolution polarimetric continuum observations of circumstellar disks provide new insights into their magnetic field. However, direct constraints are l…
Collisions and drag in debris discs with eccentric parent belts
T. Löhne, A. V. Krivov, F. Kirchschlager +2
Context: High-resolution images of circumstellar debris discs reveal off-centred rings that indicate past or ongoing perturbation, possibly caused by secular gravitational interact…
The origin of dust polarization in molecular outflows
S. Reissl, D. Seifried, S. Wolf +2
Aims: In this paper we present a case study to investigate conditions necessary to detect a characteristic magnetic field substructure embedded in a large-scale field. A helical ma…
Magnetic fields in molecular clouds: Limitations of the analysis of Zeeman observations
R. Brauer, S. Wolf, S. Reissl +1
Context. Observations of Zeeman split spectral lines represent an important approach to derive the structure and strength of magnetic fields in molecular clouds. In contrast to the…
Incidence of debris discs around FGK stars in the solar neighbourhood
B. Montesinos, C. Eiroa, A. V. Krivov +16
Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system's counterparts are the asteroid and Edgew…
On the origins of polarization holes in Bok globules
R. Brauer, S. Wolf, S. Reissl
Context. Polarimetric observations of Bok globules frequently show a decrease in the degree of polarization towards their central dense regions (polarization holes). This behaviour…
Collisional modelling of the AU Microscopii debris disc
Ch. Schüppler, T. Löhne, A. V. Krivov +6
The spatially resolved AU Mic debris disc is among the most famous and best-studied debris discs. We aim at a comprehensive understanding of the dust production and the dynamics of…
Effect of dust grain porosity on the appearance of protoplanetary disks
F. Kirchschlager, S. Wolf
We theoretically analyze protoplanetary disks consisting of porous dust grains. In the analysis of observations of protoplanetary disks the dust phase is often assumed to consist o…
Tracing the ISM magnetic field morphology: The potential of multi-wavelength polarization measurements
S. Reissl, S. Wolf, D. Seifried
We present a case study to demonstrate the potential of multi-wavelength polarization measurements. The aim is to investigate the effects that dichroic polarizatio…
Potential multi-component structure of the debris disk around HIP 17439 revealed by Herschel/DUNES
S. Ertel, J. P. Marshall, J. -C. Augereau +16
[abridged] Aims. Our Herschel Open Time Key Programme DUNES aims at detecting and characterizing debris disks around nearby, sun-like stars. In addition to the statistical analysis…
Can eccentric debris disks be long-lived? A first numerical investigation and application to Reticuli
V. Faramaz, H. Beust, P. Thébault +13
Imaging of debris disks has found evidence for both eccentric and offset disks. One hypothesis is that these provide evidence for massive perturbers that sculpt the observed struct…
Alignment in star-debris disc systems seen by Herschel
J. S. Greaves, G. M. Kennedy, N. Thureau +28
Many nearby main-sequence stars have been searched for debris using the far-infrared Herschel satellite, within the DEBRIS, DUNES and Guaranteed-Time Key Projects. We discuss here…
Herschel's "Cold Debris Disks": Background Galaxies or Quiescent Rims of Planetary Systems?
A. V. Krivov, C. Eiroa, T. Löhne +24
(abridged) Infrared excesses associated with debris disk host stars detected so far peak at wavelengths around ~100μm or shorter. However, six out of 31 excess sources in the Hersc…
DUst Around NEarby Stars. The survey observational results
C. Eiroa, J. P. Marshall, A. Mora +47
Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system's counterparts are the asteroid and Edgew…
A peculiar class of debris disks from Herschel/DUNES - A steep fall off in the far infrared
S. Ertel, S. Wolf, J. P. Marshall +21
Aims. We present photometric data of debris disks around HIP 103389 (HD 199260), HIP 107350 (HN Peg, HD206860), and HIP 114948 (HD 219482), obtained in the context of our Herschel…
Herschel discovery of a new class of cold, faint debris discs
C. Eiroa, J. P. Marshall, A. Mora +25
We present Herschel PACS 100 and 160 micron observations of the solar-type stars alpha Men, HD 88230 and HD 210277, which form part of the FGK stars sample of the Herschel Open Tim…
A Herschel resolved far-infrared dust ring around HD 207129
J. P. Marshall, T. Löhne, B. Montesinos +26
Dusty debris discs around main sequence stars are thought to be the result of continuous collisional grinding of planetesimals in the system. The majority of these systems are unre…
Cold dust around nearby stars (DUNES). First results: A resolved exo-Kuiper belt around the solar-like star zeta^2 Ret
C. Eiroa, D. Fedele, J. Maldonado +46
We present the first far-IR observations of the solar-type stars delta Pav, HR 8501, 51 Peg and zeta^2 Ret, taken within the context of the DUNES Herschel Open Time Key Programme (…