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The angular sizes of dwarf stars and subgiants Surface brightness relations calibrated by interferometry
- P. Kervella, F. Thévenin, E. Folco, D. Ségransan
- Physics
- 8 April 2004
The availability of a number of new interferometric measurements of Main Sequence and subgiant stars makes it possible to calibrate the surface brightness relations of these stars using exclusively…
A distance to the Large Magellanic Cloud that is precise to one per cent
- G. Pietrzyński, D. Graczyk, W. Narloch
- PhysicsNature
- 1 March 2019
TLDR
A New Calibration Of Galactic Cepheid Period-Luminosity Relations From B To K Bands, And A Comparison To LMC Relations
- P. Fouqué, P. Arriagada, B. Mcarthur
- Physics
- 20 September 2007
Context. The universality of the Cepheid Period-Luminosity relations has been under discussion since metallicity effects have been assumed to play a role in the value of the intercept and, more…
VLTI near-IR interferometric observations of Vega-like stars: Radius and age of a PsA, b Leo, b Pic, e Eri and t Cet
- E. Folco, F. Thévenin, P. Morel
- Physics
- 1 November 2004
We report in this paper the direct interferometric measurement of the angular diameter of five nearby Vega-like stars: α PsA, β Leo, β Pic, � Eri and τ Cet. The near-infrared (K and H bands)…
First radius measurements of very low mass stars with the VLTI
- D. Ségransan, P. Kervella, T. Forveille, D. Queloz
- Physics
- 29 November 2002
We present 4 very low mass stars radii measured with the VLTI using the 2.2m VINCI test instrument. The observations were carried out during the commissioning of the 104-meter-baseline with two…
Mass-radius relation of low and very low-mass stars revisited with the VLTI
- B. Demory, D. Ségransan, C. Perrier
- Physics
- 2 June 2009
We measured the radii of 7 low and very low-mass stars using long baseline interferometry with the VLTI interferometer and its VINCI and AMBER near-infrared recombiners. We use these new data,…
Stellar and substellar companions of nearby stars from Gaia DR2
- P. Kervella, Frédéric Arenou, F. Mignard, F. Th'evenin
- Physics, GeologyAstronomy & Astrophysics
- 21 November 2018
Context. The census of stellar and substellar companions of nearby stars is largely incomplete, in particular toward the low-mass brown dwarf and long-period exoplanets. It is, however, fundamentally…
The diameters of $\alpha$ Centauri A and B - A comparison of the asteroseismic and VINCI/VLTI views
- P. Kervella, F. Thévenin, J. Provost
- Physics
- 28 March 2003
We compare the first direct angular diameter measurements obtained on our closest stellar neighbour, Centauri, to recent model diameters constrained by asteroseismic observations. Using the VINCI…
A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty
We present a 0.16% precise and 0.27% accurate determination of R0, the distance to the Galactic center. Our measurement uses the star S2 on its 16-year orbit around the massive black hole Sgr A* that…
Proxima’s orbit around α Centauri
- P. Kervella, F. Thévenin, C. Lovis
- Physics, Geology
- 10 November 2016
Proxima and α Centauri AB have almost identical distances and proper motions with respect to the Sun. Although the probability of such similar parameters is, in principle, very low, the question as…
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