activity
20082021
most citedDetection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole

947 citations · 2.4k across the 32 of their papers we have counts for

collaborators

32 papers

astro-ph.SR2021★ 5 cited

X-rays in Cepheids: XMM-Newton Observations of Aql

Nancy Remage Evans, Ignazio Pillitteri, Pierre Kervella +13

X-ray bursts have recently been discovered in the Cepheids Cep and Dor modulated by the pulsation cycle. We have obtained an observation of the Cepheid Aql with the XMM…

astro-ph.IM2021

Maintaining scientific discourse during a global pandemic: ESO's first e-conference #H02020

Richard I. Anderson, Sherry H. Suyu, Antoine Mérand

From 22 to 26 June 2020, we hosted ESO's first live e-conference, #H02020, from within ESO headquarters in Garching, Germany. Every day, between 200 and 320 researchers around the…

astro-ph.SR2021★ 12 cited

Mid-infrared circumstellar emission of the long-period Cepheid l Carinae resolved with VLTI/MATISSE

V. Hocdé, N. Nardetto, A. Matter +149

The nature of circumstellar envelopes (CSE) around Cepheids is still a matter of debate. The physical origin of their infrared (IR) excess could be either a shell of ionized gas, o…

astro-ph.GA2021★ 28 cited

Inspecting the Cepheid distance ladder: The Hubble Space Telescope distance to the SNIa host galaxy NGC 5584

Behnam Javanmardi, Antoine Mérand, Pierre Kervella +7

The current tension between the direct and the early Universe measurements of the Hubble Constant, , requires detailed scrutiny of all the data and methods used in the studies…

astro-ph.EP2021★ 133 cited

Constraining the Nature of the PDS 70 Protoplanets with VLTI/GRAVITY

J. J. Wang, A. Vigan, S. Lacour +101

We present K-band interferometric observations of the PDS 70 protoplanets along with their host star using VLTI/GRAVITY. We obtained K-band spectra and 100 as precision astromet…

astro-ph.IM2020★ 13 cited

Increasing the achievable contrast of infrared interferometry with an error correlation model

Jens Kammerer, Antoine Mérand, Michael J. Ireland +1

Interferometric observables are strongly correlated, yet it is common practice to ignore these correlations in the data analysis process. We develop an empirical model for the corr…