206 citations · 278 across the 10 of their papers we have counts for
11 papers
Detailed study of HD 219134: a benchmark K-dwarf with a compact planetary system
Jérôme Bétrisey, Camilla Pezzotti, Gaël Buldgen +4
Space missions such as CoRoT, Kepler, and TESS have transformed asteroseismology and its synergies with exoplanet science. We revisit the nearby K-dwarf HD 219134 to investigate th…
The refractory fraction of phosphorus in planet-forming discs
Sandipan P. D. Borthakur, Mihkel Kama, Luca Fossati +3
Context. Phosphorus (P) is an essential element for life on Earth and a potential tracer of planet formation history. However, there has been no detection of P-bearing molecules in…
Detectability of deuterium in spectra of early-type stars
Veronika Mitrokhina, Colin P. Folsom, Mihkel Kama +1
Context: Deuterium is easily destroyed in stellar interiors through nuclear fusion. It is therefore usually not expected to be present in stellar photospheres. Early-type stars, wi…
Ariel stellar characterisation IV. Fundamental parameters of 18 hot stars in the Ariel mission candidate sample
H. Ramler, S. P. D. Borthakur, C. P. Folsom +16
The characterisation of exoplanetary systems depends on the accurate determination of host star parameters. The Ariel mission will probe the atmospheres of a statistically signific…
Refractory phosphorus in the HD 100546 protoplanetary disk
Mihkel Kama, Oliver Shorttle, Sandipan P. D. Borthakur +5
The phosphorus budget of planets is intertwined with their formation history and is thought to influence their habitability. The chemical reservoirs and volatile \emph{vs} refracto…
Abundance analysis of stars hosting gas-rich debris disks
Sandipan P. D. Borthakur, Mihkel Kama, Luca Fossati +4
Accretion from protoplanetary or debris disks can contaminate the stellar photosphere, which is detectable in stars with radiative envelopes due to relatively slower photospheric m…
The winds of young Solar-type stars in Coma Berenices and Hercules-Lyra
Dag Evensberget, Bradley D. Carter, Stephen C. Marsden +3
We present wind models of ten young Solar-type stars in the Hercules-Lyra association and the Coma Berenices cluster aged around 0.26 Gyr and 0.58 Gyr respectively. Combined with f…
The winds of young Solar-type stars in the Hyades
Dag Evensberget, Bradley D. Carter, Stephen C. Marsden +2
Stellar winds govern the spin-down of Solar-type stars as they age, and play an important role in determining planetary habitability, as powerful winds can lead to atmospheric eros…
Inner disk structure of the classical T Tauri star LkCa 15
S. H. P. Alencar, J. Bouvier, J. -F. Donati +15
Magnetospheric accretion has been thoroughly studied in young stellar systems with full non-evolved accretion disks, but it is poorly documented for transition disk objects with la…
Volatile carbon locking and release in protoplanetary disks. A study of TW Hya and HD 100546
M. Kama, S. Bruderer, E. F. van Dishoeck +7
The composition of planetary solids and gases is largely rooted in the processing of volatile elements in protoplanetary disks. To shed light on the key processes, we carry out a c…
A Spectroscopic Study of DD UMa: Ursa Major Group Member and Candidate for BRITE
A. Elmaslı, L. Fossati, C. P. Folsom +2
The Ursa Major group is a nearby stellar supercluster which, while not gravitationally bound, is defined by co-moving members. DD UMa is a Scuti star whose membership in the Ur…