10 citations · 38 across the 18 of their papers we have counts for
19 papers
XuYi Interferometer Observation Simulator
M. Hadjara, T. Xu, Y. Sun +21
The XuYi Interferometer is the first Chinese long-baseline optical interferometer currently under development by the National Institute of Astronomical Optics and Technology (NIAOT…
BRICS Southern Observatory (BRICS-SO) Project: Invitation to African countries to invest in Chile
Massinissa Hadjara, Amokrane Berdja, Swagat R. Das +6
Recently, the BRICS countries created a promising astronomy consortium (https://www.bricsastronomy.org/), which was joined last year by some emerging countries, including two Afric…
Laboratory characterization of Hierarchical Fringe Tracking
Roxanne Ligi, Stéphane Lagarde, Romain Petrov +7
One of the main limitations in long-baseline interferometry lies in its fringe tracking sensitivity. The challenge is therefore to maximize this sensitivity while minimizing the sp…
Multi epoch spectroscopic variability of the B supergiant HD75149
J. Chamoun-Contreras, C. Arcos, N. Machuca +6
Massive stars continuously enrich the surrounding interstellar medium by supplying it with stellar material driven by their powerful winds. B supergiant stars (BSGs) in particular…
The Astronomical Plate Digitization at SHAO
Yong Yu, Meiting Yang, Zhengjun Shang +5
The digitization of historical astronomical plates is essential for preserving century-long observational data. This work presents the development and application of the specialize…
Quasi-Random Frequency Sampling for Optical Turbulence Simulations
A. Berdja, M. Hadjara, M. Carbillet +2
Optical turbulence modelling and simulation are crucial for developing astronomical ground-based instruments, laser communication, laser metrology, or any application where light p…
An ab-initio derivation to discuss the heterodyne versus direct detection decision problem for astronomical infrared interferometry
E. A. Michael, F. E. Besser, M. Hadjara +4
A consistent and explicit spectral comparison between heterodyne (HD) and direct detection (DD) derived from first principles including the atmospheric transmission and low beam-fi…
Current status of the Extension of the FRIPON network in Chile
Felipe Gutiérrez Rojas, Sébastien Bouquillon, Rene A. Mendez +17
FRIPON is an efficient ground-based network for the detection and characterization of fireballs, which was initiated in France in 2016 with over one hundred cameras and which has b…
Application limit of the photocentre displacement to fundamental stellar parameters of fast rotators -- Illustration on the edge-on fast rotator Regulus
M. Hadjara, R. G. Petrov, S. Jankov +16
Differential Interferometry allows to obtain the differential visibility and phase, in addition to the spectrum. The differential phase contains important information about the str…
The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data
Abdurro'uf, Katherine Accetta, Conny Aerts +337
This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete…
The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope
P. Scicluna, F. Kemper, I. McDonald +89
The Nearby Evolved Stars Survey (NESS) is a volume-complete sample of 850 Galactic evolved stars within 3\,kpc at (sub-)mm wavelengths, observed in the CO (21) and…
Potential and sky coverage for off-axis fringe tracking in optical long baseline interferometry
Abdelkarim Boskri, Romain G. Petrov, Thami El Halkouj +6
The spectacular results provided by the second-generation VLTI instruments GRAVITY and MATISSE on active galactic nuclei (AGN) trigger and justify a strong increase in the sensitiv…
A CO-multilayer outer atmosphere for eight evolved stars revealed with VLTI/AMBER
M. Hadjara, P. Cruzalèbes, C. Nitschelm +3
We determine the physical parameters of the outer atmosphere of a sample of eight evolved stars, including the red supergiant α Scorpii, the red giant branch stars α Bootis and γ C…
Spatially resolving the atmosphere of the non-Mira-type AGB star SW Vir in near-infrared molecular and atomic lines with VLTI/AMBER
K. Ohnaka, M. Hadjara, M. Y. L. Maluenda Berna
We present a near-infrared spectro-interferometric observation of the non-Mira-type, semiregular asymptotic giant branch star SW Vir. Our aim is to probe the physical properties of…
Differential interferometry of the rapid rotator Regulus
M. Hadjara, R. G. Petrov, S. Jankov +3
We analyse interferometric data obtained for Regulus with AMBER (Astronomical Multi- BEam combineR) at high spectral resolution () across the Br spectral line…
Regulus observed with VLTI/AMBER
S. Jankov, M. Hadjara, R. G. Petrov +3
The rapidly rotating primary component of Regulus A system has been observed, for the first time, using the technique of differential interferometry at high spectral resolution. Th…
Observations et modélisations spectro-interférométriques longue base des étoiles et de leur environnement proche
M. Hadjara
With the construction of the VLTI (Very Large Telescope Interferometer of the European Observatory ESO for the southern hemisphere) it is now possible to make observations with res…
Etude et mise en oeuvre des techniques Temps-Distance en Heliosismologie
Massinissa Hadjara
In the same way that seismologists study the interior of the earth from the waves generated by earthquakes, heliosismology is the science that is interested in the study of oscilla…
The PICARD Payload Data Centre
G. Pradels, T. Guinle, G. Thuillier +10
PICARD is a scientific space mission dedicated to the study of the solar variability origin. A French micro-satellite will carry an imaging telescope for measuring the solar diamet…