Search Publications
The footprint of cometary dust analogues - II. Morphology as a tracer of tensile strength and application to dust collection by the Rosetta spacecraft
Blum, J.; Gundlach, B.; Dominik, C. +6 more
The structure of cometary dust is a tracer of growth processes in the formation of planetesimals. Instrumentation on board the Rosetta mission to comet 67P/Churyumov-Gerasimenko captured dust particles and analysed them in situ. However, these deposits are a product of a collision within the instrument. We conducted laboratory experiments with com…
Clumpy dust rings around non-accreting young stars
Relles, Howard; Scholz, Aleks; Eislöffel, Jochen +3 more
We investigate four young, but non-accreting, very low mass stars in Orion, which show irregular eclipses by circumstellar dust. The eclipses are not recurring periodically, are variable in depth, lack a flat bottom, and their duration is comparable to the typical time-scale between eclipses. The dimming is associated with reddening consistent wit…
The complex phenomena of young stellar objects revealed by their X‑ray variability
Reale, F.; Sciortino, S.; Pillitteri, I. +1 more
X‑ray observations of young stellar objects (YSOs) have shown several complex phenomena at work. In recent years, a few X‑ray programs based on long, continuous, and, sporadically, simultaneous coordinated multiwavelength observations have paved the way to our current understanding of the physical processes at work, which very likely regulates the…
The 2016 UK Space Agency Mars Utah Rover Field Investigation (MURFI)
Coates, A. J.; Butcher, F. E. G.; Fawdon, P. +50 more
The 2016 Mars Utah Rover Field Investigation (MURFI) was a Mars rover field trial run by the UK Space Agency in association with the Canadian Space Agency's 2015/2016 Mars Sample Return Analogue Deployment mission. MURFI had over 50 participants from 15 different institutions around the UK and abroad. The objectives of MURFI were to develop experi…
IRAS 09002-4732: A Laboratory for the Formation of Rich Stellar Clusters
Garmire, Gordon P.; Feigelson, Eric D.; Broos, Patrick S. +2 more
IRAS 09002-4732 is a poorly studied embedded cluster of stars in the Vela Molecular Ridge at a distance of 1.7 kpc. Deep observations with the Chandra X-ray Observatory, combined with existing optical and infrared surveys, produce a catalog of 441 probable pre-main-sequence members of the region. The stellar spatial distribution has two components…
Assessing Martian bedrock mineralogy through "windows" in the dust using near-infrared and thermal infrared remote sensing
Horgan, Briony; Bell, James F., III; Lai, Jason C. +1 more
Much of Mars' surface is mantled by bright dust, which masks the spectral features used to interpret the mineralogy of the underlying bedrock. Despite the wealth of near-infrared (NIR) and thermal infrared (TIR) data returned from orbiting spacecraft in recent decades, the detailed bedrock composition of approximately half of the Martian surface r…
Multiwavelength observations of the triple-peaked AGN Mrk 622
Jiménez-Bailón, E.; Binette, L.; González-Martín, O. +8 more
A detailed multiwavelength study of the properties of the triple-peaked active galactic nucleus (AGN) Mrk 622 showing different aspects of the nuclear emission region is presented. Radio, near- and mid-infrared, optical, and X-ray data have been considered for the analysis. In the optical, the WHAN diagnostic diagrams show that the three nuclear p…
On the age of the Beagle secondary asteroid family
Carruba, V.
The Beagle family is a C-type subgroup of the Themis family, in the outer main belt. Previous works suggested that it could be younger than 20 Myr and a possible source for the dust in the i ≃1.4∘ α zodiacal dust band. Here we took advantage of a much larger database for Beagle family members to revisit previous age estimates of this gr…
Transit timing variations, radial velocities, and long-term dynamical stability of the system Kepler-410
Kabáth, Petr; Skarka, Marek; Šubjak, Ján +6 more
Transit timing variations (TTVs) of Kepler-410Ab were already reported in a few papers. Their semi-amplitude is about 14.5 min. In our previous paper, we found that the TTVs could be caused by the presence of a stellar companion in this system. Our main motivation for this paper was to investigate variation in a radial-velocity (RV) curve generate…
Astroinformatics-based search for globular clusters in the Fornax Deep Survey
Paolillo, M.; Peletier, R.; Hilker, M. +15 more
In the last years, Astroinformatics has become a well-defined paradigm for many fields of Astronomy. In this work, we demonstrate the potential of a multidisciplinary approach to identify globular clusters (GCs) in the Fornax cluster of galaxies taking advantage of multiband photometry produced by the VLT Survey Telescope using automatic self-adap…