119 citations · 395 across the 19 of their papers we have counts for
19 papers
Eppur si eclissa: Eccentric low-mass companions and time-in-dust selection explain long secondary periods
Leen Decin, Owen Vermeulen, Mats Esseldeurs +5
[abbreviated] Long Secondary Periods (LSPs) are observed in about one third of pulsating red giants yet remain unexplained. Four key observational constraints anchor the discussion…
X-Shooting ULLYSES: massive stars at low metallicity: XII. The clumped winds of O-type (super)giants in the Large Magellanic Cloud
Sarah A. Brands, Frank Backs, Alex de Koter +23
Mass loss governs the evolution of massive stars and shapes the stellar surroundings. To quantify the impact of the stellar winds we need to know the exact mass-loss rates; however…
Structure formation in O-type stars and Wolf-Rayet stars
C. Van der Sijpt, J. O. Sundqvist, D. Debnath +2
Turbulent small-scale structures in the envelopes and winds of massive stars have long been suggested as the cause for excessive line broadening that could not be explained by othe…
Atmospheric escape in hot Jupiters under sub-Alfvénic interactions
Andrés Presa, Florian A. Driessen, Aline A. Vidotto
Hot Jupiters might reside inside the Alfvén surface of their host star wind, where the stellar wind is dominated by magnetic energy. The implications of such a sub-Alfvénic environ…
Evolution of helium triplet transits of close-in gas giants orbiting K-dwarfs
Andrew P. Allan, Aline A. Vidotto, Carolina Villarreal D'Angelo +2
Atmospheric escape in exoplanets has traditionally been observed using hydrogen Lyman- and H- transmission spectroscopy, but more recent detections have utilised the metastab…
X-Shooting ULLYSES: massive stars at low metallicity. I. Project Description
Jorick S. Vink, A. Mehner, P. A. Crowther +78
Observations of individual massive stars, super-luminous supernovae, gamma-ray bursts, and gravitational-wave events involving spectacular black-hole mergers, indicate that the low…
The winds of young Solar-type stars in the Pleiades, AB Doradus, Columba and Pictoris
Dag Evensberget, Stephen C. Marsden, Bradley D. Carter +6
Solar-type stars, which shed angular momentum via magnetised stellar winds, enter the main sequence with a wide range of rotational periods . This initially wide rang…
Discrete Absorption Components from 3-D spot models of hot star winds
F. A. Driessen, N. D. Kee
The winds of hot, massive stars are variable from processes happening on both large and small spatial scales. A particular case of such wind variability is 'discrete-absorption com…
Method and new tabulations for flux-weighted line-opacity and radiation line-force in supersonic media
L. G. Poniatowski, N. D. Kee, J. O. Sundqvist +7
In accelerating and supersonic media, the interaction of photons with spectral lines can be of ultimate importance. However, fully accounting for such line forces currently can onl…
Theoretical wind clumping predictions from 2D LDI models of O-star winds at different metallicities
F. A. Driessen, J. O. Sundqvist, A. Dagore
Hot, massive (OB) stars experience strong line-driven stellar winds and mass loss. As the majority of efficient driving lines are metallic, the amount of wind driving and mass loss…
The R136 star cluster dissected with Hubble Space Telescope/STIS. III. The most massive stars and their clumped winds
Sarah A. Brands, Alex de Koter, Joachim M. Bestenlehner +17
Context: The star cluster R136 inside the LMC hosts a rich population of massive stars, including the most massive stars known. The strong stellar winds of these very luminous star…
Ultraviolet Spectropolarimetry with Polstar: Clumping and Mass-loss Rate Corrections
Ken Gayley, Jorick S. Vink, Asif ud-Doula +13
The most massive stars are thought to lose a significant fraction of their mass in a steady wind during the main-sequence and blue supergiant phases. This in turn sets the stage fo…
Simulations of the line-driven instability in magnetic hot star winds
F. A. Driessen, N. D. Kee, J. O. Sundqvist
Line-driven winds of hot, luminous stars are intrinsically unstable due to the line-deshadowing instability (LDI). In non-magnetic hot stars, the LDI leads to the formation of an i…
Empirical mass-loss rates and clumping properties of Galactic early-type O supergiants
C. Hawcroft, H. Sana, L. Mahy +7
We investigate the impact of optically thick clumping on stellar wind diagnostics in O supergiants and constrain wind parameters associated with porosity in velocity space. This is…
Shock-heated radiation-driven outflows as a solution to the weak-wind problem of late O-type stars
C. Lagae, F. A. Driessen, L. Hennicker +2
Context. Radiation-driven mass loss is key to our understanding of massive-star evolution. However, for low-luminosity O-type stars there are big discrepancies between theoreticall…
Line-drag damping of Alfvén waves in radiatively driven winds of magnetic massive stars
F. A. Driessen, N. D. Kee, J. O. Sundqvist +1
Line-driven stellar winds from massive (OB) stars are subject to a strong line-deshadowing instability. Recently, spectropolarimetric surveys have collected ample evidence that a s…
Radiography in high mass X-ray binaries -- Micro-structure of the stellar wind through variability of the column density
I. El Mellah, V. Grinberg, J. O. Sundqvist +2
In high mass X-ray binaries (HMXBs), an accreting compact object orbits a high mass star which loses mass through a dense and inhomogeneous wind. Using the compact object as an X-r…
Theoretical wind clumping predictions of OB supergiants from line-driven instability simulations across the bi-stability jump
F. A. Driessen, J. O. Sundqvist, N. D. Kee
(Abridged) The behaviour of mass loss across bi-stability jump is a key uncertainty in models of massive stars. While an increase in mass loss is theoretically predicted, this has…
First Empirical Constraints on the Low H Mass-Loss Rates of Magnetic O-Stars
Florian A. Driessen, Jon O. Sundqvist, Gregg A. Wade
A small subset of Galactic O-stars possess surface magnetic fields that alter the outflowing stellar wind by magnetically confining it. Key to the magnetic confinement is that it i…