activity
20222026
most citedHR 6819 is a binary system with no black hole -- revisiting the source with infrared interferometry and optical integral field spectroscopy

32 citations · 115 across the 9 of their papers we have counts for

collaborators

9 papers

astro-ph.SR2026

Southern Massive Stars at High Angular Resolution (SMaSH+): Properties of hierarchical massive triples

E. Bordier, H. Sana, A. J. Frost +9

While massive stars are frequently found in triple architectures, the lack of observed parameter distributions has long remained a bottleneck for statistical models of their evolut…

astro-ph.IM2026

Resolving the smallest scales of massive star formation: A case for next-generation thermal-infrared interferometers

Emma Bordier, Evgenia Koumpia, Lucas Labadie +3

This white paper was submitted to the European Southern Observatory (ESO) as part of the "Expanding horizons: transforming astronomy in the 2040s" call. Understanding how massive s…

astro-ph.SR2026

The GRAVITY young stellar object survey -- XV. The star-disk interaction region of the T Tauri star DO Tau

GRAVITY Collaboration, K. Perraut, J. Bouvier +61

Protoplanetary disks around young Sun-like stars are the cradles of the vast majority of detected exoplanets. Probing these disks at multiple spatial scales is key to uncovering ho…

astro-ph.GA2024★ 19 cited

A binary system in the S cluster close to the supermassive black hole Sagittarius A*

Florian Peißker, Michal Zajacek, Lucas Labadie +4

High-velocity stars and peculiar G objects orbit the central supermassive black hole (SMBH) Sagittarius A* (Sgr A*). Together, the G objects and high-velocity stars constitute the…

astro-ph.SR2024★ 14 cited

Investigating 39 Galactic Wolf-Rayet stars with VLTI/GRAVITY: Uncovering A Long Period Binary Desert

K. Deshmukh, H. Sana, A. Mérand +16

Wolf-Rayet stars (WRs) are one of the final evolutionary stages of massive stars and immediate progenitors of stellar-mass black holes. Their multiplicity forms an important anchor…

astro-ph.SR2023★ 7 cited

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…

astro-ph.SR2022★ 19 cited

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…

astro-ph.SR2022★ 32 cited

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…

astro-ph.SR2022★ 24 cited

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…