108 citations · 338 across the 16 of their papers we have counts for
16 papers
A magnetic massive star has experienced a stellar merger
A. J. Frost, H. Sana, L. Mahy +13
Massive stars (those larger than 8 solar masses at formation) have radiative envelopes that cannot sustain a dynamo, the mechanism that produces magnetic fields in lower-mass stars…
The onset of stellar multiplicity in massive star formation: A search for low-mass companions of massive young stellar objects with -band adaptive optics imaging
E. Bordier, W. -J. de Wit, A. J. Frost +3
Given the high incidence of binaries among mature field massive stars, it is clear that multiplicity is an inevitable outcome of high-mass star formation. Understanding how massive…
MWC 656 is unlikely to contain a black hole
S. Janssens, T. Shenar, N. Degenaar +4
Context. MWC 656 was reported as the first known Be star with a black-hole (BH) companion in a 60 d period. The mass of the proposed BH companion is estimated to be between 4 - 7 M…
Multiplicity of northern bright O-type stars with optical long baseline interferometry
Cyprien Lanthermann, Jean-Baptiste Le Bouquin, Hugues Sana +16
The study of the multiplicity of massive stars gives hints on their formation processes and their evolutionary paths, which are still not fully understood. Large separation binarie…
First spatially resolved Na I and He I transitions towards an MYSO. Finding new tracers for the gaseous star/disc interface
Evgenia Koumpia, M. Koutoulaki, W. -J. de Wit +4
With steady observational advances, the formation of massive stars is being understood in more detail. Numerical models are converging on a scenario where accretion discs play a ke…
The Nature of Unseen Companions in Massive Single-Line Spectroscopic Binaries
Hugues Sana, Michael Abdul-Masih, Gareth Banyard +14
Massive stars are predominantly found in binaries and higher order multiples. While the period and eccentricity distributions of OB stars are now well established across different…
Detecting Stripped Stars While Searching for Quiescent Black Holes
J. Bodensteiner, M. Heida, M. Abdul-Masih +13
While the number of stellar-mass black holes detected in X-rays or as gravitational wave sources is steadily increasing, the known population remains orders of magnitude smaller th…
On the origin of close massive binaries in the M17 star-forming region
E. Bordier, A. J. Frost, H. Sana +5
Spectroscopic multiplicity surveys of O stars in young clusters and OB associations have revealed that a large portion ( 70%) of these massive stars (M 15 $M_{\od…
HR 6819 is a binary system with no black hole -- revisiting the source with infrared interferometry and optical integral field spectroscopy
A. J. Frost, J. Bodensteiner, Th. Rivinius +16
Two scenarios have been proposed to match the existing observational constraints of the object HR 6819. The system could consist of a close inner B-type giant plus a black hole (BH…
Planet Hunters TESS IV: A massive, compact hierarchical triple star system TIC 470710327
Nora L. Eisner, Cole Johnston, Silvia Toonen +37
We report the discovery and analysis of a massive, compact, hierarchical triple system (TIC 470710327) initially identified by citizen scientists in data obtained by NASA's Transit…
Tying the geometrical traits of massive young stellar objects and their discs to a potential evolutionary sequence using infrared observations
A. J. Frost, R. D. Oudmaijer, S. L. Lumsden +1
Young massive stars influence their surroundings from local to galactic scales, but the observational challenges associated with their distance and embedded nature has, until the r…
The first interferometric survey in the K-band of massive YSOs. On the hot dust, ionised gas, and binarity at au scales
E. Koumpia, W. -J. de Wit, R. D. Oudmaijer +8
Circumstellar discs are essential for high mass star formation, while multiplicity, in particular binarity, appears to be an inevitable outcome since the vast majority of massive s…
Resolving the dynamical mass tension of the massive binary 9 Sagittarii
M. Fabry, C. Hawcroft, A. J. Frost +4
Direct dynamical mass measurements of stars with masses above 30 M are rare. This is the result of the low yield of the upper initial mass function and the limited number…
Unveiling the traits of massive young stellar objects through a multi-scale survey
A. J. Frost, R. D. Oudmaijer, W. J. de Wit +1
The rarity and deeply embedded nature of stars with masses larger than 8 solar masses has limited our understanding of their formation. Previous work has shown that complementing s…
Is HR 6819 a triple system containing a black hole? -- An alternative explanation
J. Bodensteiner, T. Shenar, L. Mahy +10
HR 6819 was recently proposed to be a triple system consisting of an inner B-type giant + black hole binary with an orbital period of 40d and an outer Be tertiary. This interpretat…
A multi-scale exploration of a massive young stellar object - a transition disk around G305.20+0.21?
A. J. Frost, R. D. Oudmaijer, W. J. de Wit +1
The rarity of young massive stars combined with the fact that they are often deeply embedded has limited the understanding of their formation. Ground based mid-infrared (IR) interf…