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A Detailed Spectroscopic Study of the WN6ha + O5 Colliding-wind Binary WR 25
Eric Gosset, Roberto Gamen, Laurent Mahy +3
Massive stars have a major impact on their environment in their host galaxy. Observational determinations of their physical parameters are required to better constrain evolutionary…
Ori C as a medieval bully: a possible very recent ejection in the Trapezium
J. Maíz Apellániz, M. Pantaleoni González, R. H. Barbá
We use Gaia EDR3 astrometry to propose that a dynamical interaction between the multiple system Ori C and Ori F ejected the latter as a walkaway star ~1100 years ago (w…
Lucky spectroscopy, an equivalent technique to Lucky Imaging: II. Spatially-resolved intermediate-resolution blue-violet spectroscopy of 19 close massive binaries using the William Herschel Telescope
J. Maíz Apellániz, R. H. Barbá, C. Fariña +5
CONTEXT. Many massive stars have nearby companions whose presence hamper their characterization through spectroscopy. AIMS. We want to continue obtaining spatially resolved spectro…
Variability of OB stars from TESS southern Sectors 1-13 and high-resolution IACOB and OWN spectroscopy
S. Burssens, S. Simón-Díaz, D. M. Bowman +6
Lack of high-precision long-term continuous photometric data for large samples of stars has prevented the large-scale exploration of pulsational variability in the OB star regime.…
VLT/X-shooter spectroscopy of massive young stellar objects in the 30 Doradus region of the Large Magellanic Cloud
M. L. van Gelder, L. Kaper, J. Japelj +13
The process of massive star () formation is still poorly understood. Observations of massive young stellar objects (MYSOs) are challenging due to their rarity, shor…
Close Binary Companions to APOGEE DR16 Stars: 20,000 Binary-star Systems Across the Color-Magnitude Diagram
Adrian M. Price-Whelan, David W. Hogg, Hans-Walter Rix +20
Many problems in contemporary astrophysics---from understanding the formation of black holes to untangling the chemical evolution of galaxies---rely on knowledge about binary stars…