2.7k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre de Recherche Astrophysique de LyonFR515 papers
- Lyon 1 UniversitéFR430 papers
- Centre National de la Recherche ScientifiqueFR408 papers
- École Normale Supérieure de LyonFR224 papers
- European Southern ObservatoryCL146 papers
- University of OxfordGB141 papers
- Observatoire de ParisFR124 papers
- Leiden UniversityNL121 papers
- University of GroningenNL95 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR91 papers
- Max Planck Institute for AstrophysicsDE90 papers
- Leiden Observatory88 papers
47 papers · 1 filter
Extraction of Physical Parameters of RRab Variables using Neural Network based Interpolator
Nitesh Kumar, Harinder P. Singh, Oleg Malkov +4
Determining the physical parameters of pulsating variable stars such as RR Lyrae is essential for understanding their internal structure, pulsation mechanisms, and evolutionary sta…
Multi-wavelength Photometric Study of RR Lyrae Variables in the Globular Cluster NGC 5272 (Messier 3)
Nitesh Kumar, Anupam Bhardwaj, Harinder P. Singh +3
We present a comprehensive photometric study of RR Lyrae stars in the M3 globular cluster, utilising a vast dataset of 3140 optical () CCD images spanning 35 years from astr…
Synthetic stellar spectra to study multiple populations in globular clusters: an extended grid and the effects on the integrated light
Vinicius Branco, Paula R. T. Coelho, Ariane Lançon +2
Most Galactic Globular Clusters (GCs) harbour multiple populations of stars (MPs), composed of at least two generations: the first characterized by a "standard" -enhanced metal…
The birth and early evolution of a low mass protostar
Adnan Ali Ahmad, Matthias González, Patrick Hennebelle +1
Understanding the collapse of dense molecular cloud cores to stellar densities and the subsequent evolution of the protostar is of importance to model the feedback effects such an…
Predicting light curves of RR Lyrae variables using artificial neural network based interpolation of a grid of pulsation models
Nitesh Kumar, Anupam Bhardwaj, Harinder P. Singh +4
We present a new technique to generate the light curves of RRab stars in different photometric bands ( and bands) using Artificial Neural Networks (ANN). A pre-computed grid…
Topological modes in stellar oscillations
Armand Leclerc, Guillaume Laibe, Pierre Delplace +2
Stellar oscillations can be of topological origin. We reveal this deep and so-far hidden property of stars by establishing a novel parallel between stars and topological insulators…
Prospects of measuring a metallicity trend and spread in globular clusters from low-resolution spectroscopy
Martina Baratella, Deepthi S. Prabhu, Luiz A. Silva-Lima +1
The metallicity spread, or the metallicity trend along the evolutionary sequence of a globular cluster, is a rich source of information to help understand the cluster physics (e.g.…
The X-shooter Spectral Library (XSL): Data Release 3
Kristiina Verro, S. C. Trager, R. F. Peletier +12
We present the third data release (DR3) of the X-shooter Spectral Library (XSL). This moderate-to-high resolution, near-ultraviolet-to-near-infrared ( nm, R 10 000…
The X-Shooter Spectral Library (XSL): Data Release 2
Anaïs Gonneau, M. Lyubenova, A. Lançon +11
We present the second data release (DR2) of the X-Shooter Spectral Library (XSL), which contains all the spectra obtained over the six semesters of that program. This release super…
Estimating Stellar Atmospheric Parameters by Automated Methods Using SSLs
Kaushal Sharma, H. P. Singh, A. Kashyap +1
Libraries of stellar spectra, such as ELODIE (Prugniel & Soubiran 2001), CFLIB (Valdes et al. 2004), or MILES (Sánchez-Blázquez et al. 2006), are used for a variety of applications…
The Association of a J-burst with a Solar Jet
D. E. Morosan, P. T. Gallagher, R. A. Fallows +56
Context. The Sun is an active star that produces large-scale energetic events such as solar flares and coronal mass ejections and numerous smaller-scale events such as solar jets.…
Carbon stars in the X-Shooter Spectral Library: II. Comparison with models
A. Gonneau, A. Lançon, S. C. Trager +6
In a previous paper, we assembled a collection of medium-resolution spectra of 35 carbon stars, covering optical and near-infrared wavelengths from 400 to 2400 nm. The sample inclu…
Structure of Herbig AeBe disks at the milliarcsecond scale A statistical survey in the H band using PIONIER-VLTI
B. Lazareff, J. -P. Berger, J. Kluska +26
Context. It is now generally accepted that the near-infrared excess of Herbig AeBe stars originates in the dust of a circumstellar disk. Aims. The aims of this article are to infer…
MUSE crowded field 3D spectroscopy of over 12,000 stars in the globular cluster NGC 6397 - I. The first comprehensive spectroscopic HRD of a globular cluster
Tim-Oliver Husser, Sebastian Kamann, Stefan Dreizler +8
Aims. We demonstrate the high multiplex advantage of crowded field 3D spectroscopy using the new integral field spectrograph MUSE by means of a spectroscopic analysis of more than…
MUSE crowded field 3D spectroscopy of over 12,000 stars in the globular cluster NGC 6397 - II. Probing the internal dynamics and the presence of a central black hole
Sebastian Kamann, Tim-Oliver Husser, Jarle Brinchmann +8
We present a detailed analysis of the kinematics of the Galactic globular cluster NGC 6397 based on more than ~18,000 spectra obtained with the novel integral field spectrograph MU…
Carbon stars in the X-shooter Spectral Library
A. Gonneau, A. Lançon, S. C. Trager +13
We provide a new collection of spectra of 35 carbon stars obtained with the ESO/VLT X-shooter instrument as part of the X-shooter Spectral Library project. The spectra extend from…
The SPHERE view of the planet-forming disk around HD100546
Antonio Garufi, Sascha P. Quanz, Hans Martin Schmid +39
We image with unprecedented spatial resolution and sensitivity disk features that could be potential signs of planet-disk interaction. Two companion candidates have been claimed in…
Azimuthal asymmetries in the debris disk around HD61005
J. Olofsson, M. Samland, H. Avenhaus +30
Debris disks offer valuable insights into the latest stages of circumstellar disk evolution, and can possibly help us to trace the outcomes of planetary formation processes. In the…
New atmospheric parameters and spectral interpolator for the MILES cool stars
Kaushal Sharma, Philippe Prugniel, Harinder P. Singh
Context: The full spectrum fitting of stellar spectra against a library of empirical spectra is a well-established approach to measure the atmospheric parameters of FGK stars with…
The close circumstellar environment of Betelgeuse - III. SPHERE/ZIMPOL visible polarimetry of the inner envelope and photosphere
P. Kervella, E. Lagadec, M. Montargès +7
The physical mechanism through which the outgoing material of massive red supergiants is accelerated above the escape velocity is unclear. Thanks to the transparency of its circums…
Asymmetric features in the protoplanetary disk MWC758
M. Benisty, A. Juhasz, A. Boccaletti +25
The study of dynamical processes in protoplanetary disks is essential to understand planet formation. In this context, transition disks are prime targets because they are at an adv…
The Expanding Fireball of Nova Delphini 2013
G. H. Schaefer, T. ten Brummelaar, D. R. Gies +34
A classical nova occurs when material accreting onto the surface of a white dwarf in a close binary system ignites in a thermonuclear runaway. Complex structures observed in the ej…
Spectral and spatial imaging of the Be+sdO binary phi Persei
D. Mourard, J. D. Monnier, A. Meilland +25
The rapidly rotating Be star phi Persei was spun up by mass and angular momentum transfer from a now stripped-down, hot subdwarf companion. Here we present the first high angular r…
A resolved, au-scale gas disk around the B[e] star HD 50138
L. E. Ellerbroek, M. Benisty, S. Kraus +14
HD 50138 is a B[e] star surrounded by a large amount of circumstellar gas and dust. Its spectrum shows characteristics which may indicate either a pre- or a post-main-sequence syst…