Publications (88)
HI absorption in MHONGOOSE -- Spin temperatures and cold neutral medium in nearby disk galaxies
W. J. G. de Blok, F. M. Maccagni, L. Chemin +7
Combined HI emission-absorption studies constrain the spin temperature and phase structure of the neutral atomic hydrogen interstellar medium (ISM), but have largely been limited t…
Gaia FGK benchmark stars: abundances of alpha and iron-peak elements
P. Jofré, U. Heiter, C. Soubiran +26
In the current era of large spectroscopic surveys of the Milky Way, reference stars for calibrating astrophysical parameters and chemical abundances are of paramount importance. We…
Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure
Gaia Collaboration, F. Arenou, C. Babusiaux +447
The Gaia DR3 Catalogue contains for the first time about eight hundred thousand solutions with either orbital elements or trend parameters for astrometric, spectroscopic and eclips…
Gaia Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars
Gaia Collaboration, A. Krone-Martins, C. Ducourant +398
Context. Strongly lensed quasars are fundamental sources for cosmology. The Gaia space mission covers the entire sky with the unprecedented resolution of " in the optical, ma…
Gaia Early Data Release 3: Summary of the contents and survey properties
Gaia Collaboration, A. G. A Brown, A. Vallenari +423
We present the early installment of the third Gaia data release, Gaia EDR3, consisting of astrometry and photometry for 1.8 billion sources brighter than magnitude 21, complemented…
Asymmetries in random motions of neutral Hydrogen gas in spiral galaxies
P. Adamczyk, P. Amram, L. Chemin +4
(Abridged). It has been recently shown that random motions of the neutral Hydrogen gas of the Triangulum galaxy (M33) exhibit a bisymmetric perturbation which is aligned with the m…
The Triangulum Extended (TREX) Survey: The Stellar Disk Dynamics of M33 as a Function of Stellar Age
A. C. N. Quirk, P. Guhathakurta, K. Gilbert +8
Triangulum, M33, is a low mass, relatively undisturbed spiral galaxy that offers a new regime in which to test models of dynamical heating. In spite of its proximity, the dynamical…
Gaia Early Data Release 3: Updated radial velocities from Gaia DR2
G. Seabroke, C. Fabricius, D. Teyssier +40
Gaia's Early Third Data Release (EDR3) does not contain new radial velocities because these will be published in Gaia's full third data release (DR3), expected in the first half of…
Gaia Data Release 2: Properties and validation of the radial velocities
D. Katz, P. Sartoretti, M. Cropper +51
For Gaia DR2 (GDR2), 280 million spectra, collected by the RVS instrument on-board Gaia, were processed and median radial velocities were derived for 9.8 million sources brighter t…
Gaia Data Release 3: Properties of the line broadening parameter derived with the Radial Velocity Spectrometer (RVS)
Y. Frémat, F. Royer, O. Marchal +38
The third release of the Gaia catalogue contains the radial velocities for 33,812,183 stars having effective temperatures ranging from 3100 K to 14,500 K. The measurements are base…
Future mmVLBI Research with ALMA: A European vision
R. P. J. Tilanus, T. P. Krichbaum, J. A. Zensus +165
Very long baseline interferometry at millimetre/submillimetre wavelengths (mmVLBI) offers the highest achievable spatial resolution at any wavelength in astronomy. The anticipated…
H-alpha Kinematics of the SINGS Nearby Galaxies Survey. II
I. Dicaire, C. Carignan, P. Amram +8
This is the second part of an H-alpha kinematics follow-up survey of the Spitzer Infrared Nearby Galaxies Survey (SINGS) sample. The aim of this program is to shed new light on the…
Gaia Data Release 1. Open cluster astrometry: performance, limitations, and future prospects
Gaia Collaboration, F. van Leeuwen, A. Vallenari +589
Context. The first Gaia Data Release contains the Tycho-Gaia Astrometric Solution (TGAS). This is a subset of about 2 million stars for which, besides the position and photometry,…
Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry
Gaia Collaboration, P. Panuzzo, T. Mazeh +412
Gravitational waves from black-hole merging events have revealed a population of extra-galactic BHs residing in short-period binaries with masses that are higher than expected base…
Globular clusters and dwarf galaxies in Fornax - I. Kinematics in the cluster core from multi-object spectroscopy
G. Bergond, E. Athanassoula, S. Leon +6
We acquired radial velocities of a significant number of globular clusters (GCs) on wide fields between galaxies in the nearby Fornax cluster of galaxies, in order to derive their…
Dark matter fraction derived from the M31 rotation curve
F. Hammer, Y. B. Yang, P. Amram +6
Mass estimates of a spiral galaxy derived from its rotation curve must account for the galaxy's past accretion history. There are several lines of evidence indicating that M31 expe…
GALEX observations of Low Surface Brightness Galaxies: UV color and star formation efficiency
S. Boissier, A. Gil de Paz, A. Boselli +7
We present GALEX UV observations of a sample of Low Surface Brightness (LSB) galaxies for which HI data are available, allowing us to estimate their star formation efficiency. We f…
A Virgo high-resolution Halpha kinematical survey: I. NGC 4438
L. Chemin, V. Cayatte, C. Balkowski +8
New Halpha emission-line observations of the Virgo cluster galaxy NGC 4438 are presented. Fabry-Perot interferometry data at an effective angular resolution of ~2" are used to map…
Possible origins of anomalous HI gas around MHONGOOSE galaxy, NGC 5068
J. Healy, W. J. G. de Blok, F. M. Maccagni +17
The existing reservoirs of neutral atomic hydrogen gas (HI) in galaxies are insufficient to have maintained the observed levels of star formation without some kind of replenish…
Gaia Focused Product Release: Sources from Service Interface Function image analysis -- Half a million new sources in omega Centauri
Gaia Collaboration, K. Weingrill, A. Mints +400
Gaia's readout window strategy is challenged by very dense fields in the sky. Therefore, in addition to standard Gaia observations, full Sky Mapper (SM) images were recorded for ni…
Gaia Data Release 3: Reflectance spectra of Solar System small bodies
Gaia Collaboration, L. Galluccio, M. Delbo +444
The Gaia mission of the European Space Agency (ESA) has been routinely observing Solar System objects (SSOs) since the beginning of its operations in August 2014. The Gaia data rel…
Gaia Early Data Release 3: Acceleration of the solar system from Gaia astrometry
Gaia Collaboration, S. A. Klioner, F. Mignard +414
Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quali…
Gaia Data Release 3: G_RVS photometry from the RVS spectra
P. Sartoretti, O. Marchal, C. Babusiaux +38
Gaia Data Release 3 (DR3) contains the first release of magnitudes estimated from the integration of Radial Velocity Spectrometer (RVS) spectra for a sample of about 32.2 million s…
Triangulum galaxy viewed by Planck
F. De Paolis, V. G. Gurzadyan, A. A. Nucita +9
We used Planck data to study the M33 galaxy and find a substantial temperature asymmetry with respect to its minor axis projected onto the sky plane. This temperature asymmetry cor…
NIBLES - an HI census of stellar mass selected SDSS galaxies: I. The Nançay HI survey
W. van Driel, Z. Butcher, S. Schneider +10
To investigate galaxy properties as a function of their total stellar mass, we obtained 21cm HI line observations at the 100-m class Nançay Radio Telescope of 2839 galaxies from t…
Gaia DR3 high radial velocity stars: Genuine fast-moving objects or outliers?
D. Katz, A. Gómez, E. Caffau +39
The third Gaia data release includes 33.8 million radial velocity measurements, extending to a magnitude of G_RVS = 14. To reach this magnitude limit, spectra were processed down t…
Kinematic analysis of the Large Magellanic Cloud using Gaia DR3
Ã. Jiménez-Arranz, M. Romero-Gómez, X. Luri +6
Context: The high quality of the Gaia mission data is allowing to study the internal kinematics of the Large Magellanic Cloud (LMC) in unprecedented detail, providing insights on t…
H-alpha Kinematics of the SINGS Nearby Galaxies Survey. I
O. Daigle, C. Carignan, P. Amram +4
This is the first part of an Halpha kinematics follow-up survey of the SINGS sample. The data for 28 galaxies are presented. The observations were done on three different telescope…
Gaia Data Release 3: Pulsations in main sequence OBAF-type stars
Gaia Collaboration, J. De Ridder, V. Ripepi +445
The third Gaia data release provides photometric time series covering 34 months for about 10 million stars. For many of those stars, a characterisation in Fourier space and their v…
IMAGES-III: The evolution of the Near-Infrared Tully-Fisher relation over the last 6 Gyr
M. Puech, H. Flores, F. Hammer +22
Using the multi-integral field spectrograph GIRAFFE at VLT, we have derived the K-band Tully-Fisher relation (TFR) at z~0.6 for a representative sample of 65 galaxies with emission…
Deep HI observations of cold gas inflow and outflow
W. J. G. de Blok, D. B. Fisher, K. Tachihara +8
A major question in galaxy evolution is how galaxies acquire sufficient gas to sustain their star formation rates. HI observations with high angular resolution and sensitivity to v…
From Gaia to GaiaNIR: II. A new view of the Milky Way bar
Ã. Jiménez-Arranz, M. Schölch, S. Khanna +9
The Milky Way (MW) hosts a central bar whose pattern speed, orientation, and length remain uncertain, largely due to observational biases and selection effects, despite the transfo…
Searching for HI around MHONGOOSE Galaxies via Spectral Stacking
S. Veronese, W. J. G. de Blok, J. Healy +19
The observed star formation rates of galaxies in the Local Universe suggests that they are replenishing their gas reservoir across cosmic time. Cosmological simulations predict tha…
HI within and around observed and simulated galaxy discs -- Comparing MeerKAT observations with mock data from TNG50 and FIRE-2
A. Marasco, W. J. G. de Blok, F. M. Maccagni +12
Atomic hydrogen (HI) is an ideal tracer of gas flows in and around galaxies, and it is uniquely observable in the nearby Universe. Here we make use of wide-field (~1 square degree)…
Gaia Data Release 2: The catalogue of radial velocity standard stars
C. Soubiran, G. Jasniewicz, L. Chemin +39
Aims. The Radial Velocity Spectrometer (RVS) on board the ESA satellite mission Gaia has no calibration device. Therefore, the radial velocity zero point needs to be calibrated wit…
Gaia Data Release 1. Testing the parallaxes with local Cepheids and RR Lyrae stars
Gaia Collaboration, G. Clementini, L. Eyer +588
Parallaxes for 331 classical Cepheids, 31 Type II Cepheids and 364 RR Lyrae stars in common between Gaia and the Hipparcos and Tycho-2 catalogues are published in Gaia Data Release…
Gaia Data Release 2: Observational Hertzsprung-Russell diagrams
Gaia Collaboration, C. Babusiaux, F. van Leeuwen +450
We highlight the power of the Gaia DR2 in studying many fine structures of the Hertzsprung-Russell diagram (HRD). Gaia allows us to present many different HRDs, depending in partic…
Gaia Data Release 3: Hot-star radial velocities
R. Blomme, Y. Fremat, P. Sartoretti +38
The second Gaia data release, DR2, contained radial velocities of stars with effective temperatures up to Teff = 6900 K. The third data release, Gaia DR3, extends this up to Teff =…
Environmental Effects on the Kinematics of Virgo Cluster Galaxies
L. Chemin, V. Cayatte, C. Balkowski +9
We present results from an ongoing survey dedicated to the ionized gas kinematics of Virgo cluster spiral galaxies using Fabry-Perot interferometry. Our goal is to study the enviro…
Gaia Focused Product Release: Radial velocity time series of long-period variables
Gaia Collaboration, M. Trabucchi, N. Mowlavi +403
The third Gaia Data Release (DR3) provided photometric time series of more than 2 million long-period variable (LPV) candidates. Anticipating the publication of full radial-velocit…
The VMC Survey -- XLVIII. Classical Cepheids unveil the 3D geometry of the LMC
V. Ripepi, L. Chemin, R. Molinaro +12
We employed the {\it VISTA near-infrared survey of the Magellanic System} (VMC), to analyse the light curves of Cepheid stars (DCEPs) i…
The MW is an exceptionnally quiet galaxy: implications for spiral formation
M. Puech, F. Hammer, L. Chemin +2
We compare both the Milky Way and M31 to local external disk galaxies within the same mass range, using their relative locations in the planes formed by Vflat vs. MK (the Tully-Fis…
HI studies of the Sculptor group galaxies. VIII. The background galaxies: NGC 24 and NGC 45
L. Chemin, C. Carignan, N. Drouin +1
In order to complete our HI survey of galaxies in the Sculptor group area, VLA observations of NGC 24 and NGC 45 are presented. These two galaxies of similar magnitude M_B ~ -17.4…
First spectroscopic study of ionized gas emission lines in the extreme low surface brightness galaxy Malin 1
Junais, S. Boissier, B. Epinat +7
Malin 1 is the largest known low surface brightness (LSB) galaxy, the archetype of so-called giant LSBs. The structure and the origin of such galaxies are still poorly understood,…
KRATOS: A large suite of N-body simulations to interpret the stellar kinematics of LMC-like discs
Ã. Jiménez-Arranz, S. Roca-Fà brega, M. Romero-Gómez +4
We present KRATOS, a comprehensive suite of 28 open access pure N-body simulations of isolated and interacting LMC-like galaxies, to study the formation of substructures in their d…
Gaia Data Release 3 Properties and validation of the radial velocities
D. Katz, P. Sartoretti, A. Guerrier +47
Gaia Data Release 3 (Gaia DR3) contains the second release of the combined radial velocities. It is based on the spectra collected during the first 34 months of the nominal mission…
Gaia Data Release 2: Processing the spectroscopic data
P. Sartoretti, D. Katz, M. Cropper +50
The Gaia Data Release 2 contains the 1st release of radial velocities complementing the kinematic data of a sample of about 7 million relatively bright, late-type stars. Aims: This…
Gaia Data Release 3: Chemical cartography of the Milky Way
Gaia Collaboration, A. Recio-Blanco, G. Kordopatis +447
Gaia DR3 opens a new era of all-sky spectral analysis of stellar populations thanks to the nearly 5.6 million stars observed by the RVS and parametrised by the GSP-spec module. The…
3D kinematics and age distribution of the Open Cluster population
Y. Tarricq, C. Soubiran, L. Casamiquela +14
Open Clusters (OCs) can trace with a great accuracy the evolution of the Galactic disk. The aim of this work is to study the kinematical behavior of the OC population over time. We…
The Milky Way: An Exceptionally Quiet Galaxy; Implications for the formation of spiral galaxies
F. Hammer, M. Puech, L. Chemin +2
[Abridged]We compare both the Milky Way and M31 galaxies to local external disk galaxies within the same mass range, using their relative locations in the planes formed by V_flat v…
Ram pressure stripping of the multiphase ISM in the Virgo cluster spiral galaxy NGC 4438
B. Vollmer, M. Soida, A. Chung +4
Ram pressure stripping of the multiphase ISM is studied in the perturbed Virgo cluster spiral galaxy NGC 4438. This galaxy underwent a tidal interaction ~100 Myr ago and is now str…
A 3D Optical Spectroscopy Study of Low Surface Brightness Galaxies
L. Chemin, P. Amram, C. Carignan +6
We present Halpha emission line velocity fields of two Low Surface Brightness galaxies - UGC 628 and UGC 5005 - obtained using Fabry-Perot interferometry observations at the Canada…
A Multi-Scale Study of Star Formation in Messier 33
E. C. Elson, S. Z. Kam, L. Chemin +2
For the Local Group Scd galaxy M 33 this paper presents a multi-scale study of the relationship between the monochromatic star formation rate (SFR) estimator based on 12 m emis…
A Virgo high-resolution Halpha kinematical survey
L. Chemin, C. Balkowski, V. Cayatte +9
We have completed a survey of 30 Virgo cluster galaxies in the Halpha emission-line using Fabry-Perot interferometry. The goal of the survey is to obtain a high angular resolution…
Bar pattern speed modulation across LMC stellar populations
V. Araya, L. Chemin, O. Jimenez-Arranz +1
The bar pattern speed of the LMC has been measured using Gaia data, suggesting the presence of a slow pattern, perhaps not rotating at all. Numerical simulations of interacting LMC…
The bar pattern speed of the Large Magellanic Cloud
Ã. Jiménez-Arranz, L. Chemin, M. Romero-Gómez +6
Context: The Large Magellanic Cloud (LMC) internal kinematics have been studied in unprecedented depth thanks to the excellent quality of the Gaia mission data, revealing the disc'…
The Milky Way accretion history compared to cosmological simulations -- from bulge to dwarf galaxy infall
F. Hammer, Y. J. Jiao, G. A. Mamon +6
Galactic halos are known to grow hierarchically, inside out. This implies a correlation between the infall lookback time of satellites and their binding energy. Cosmological simula…
Gaia Early Data Release 3: The Galactic anticentre
Gaia Collaboration, T. Antoja, P. McMillan +417
We aim to demonstrate the scientific potential of the Gaia Early Data Release 3 (EDR3) for the study of the Milky Way structure and evolution. We used astrometric positions, proper…
Gaia Data Release 3: A Golden Sample of Astrophysical Parameters
Gaia Collaboration, O. L. Creevey, L. M. Sarro +445
Gaia Data Release 3 (DR3) provides a wealth of new data products for the astronomical community to exploit, including astrophysical parameters for a half billion stars. In this wor…
Galactic spiral structure revealed by Gaia EDR3
E. Poggio, R. Drimmel, T. Cantat-Gaudin +14
Using the astrometry and integrated photometry from the Gaia Early Data Release 3 (EDR3), we map the density variations in the distribution of young Upper Main Sequence (UMS) stars…
An Overview of the MHONGOOSE Survey: Observing Nearby Galaxies with MeerKAT
W. J. G. de Blok, E. A. K. Adams, P. Amram +65
MHONGOOSE is a deep survey of the neutral hydrogen distribution in a representative sample of 30 nearby disk and dwarf galaxies with HI masses from 10^6 to ~10^{11} M_sun, and lumi…
On the relevance of the Tremaine-Weinberg method applied to H-alpha velocity field.Pattern speeds determination in M100 (NGC 4321)
O. Hernandez, H. Wozniak, C. Carignan +3
The relevance of the Tremaine-Weinberg (TW) method is tested to measure the bar, spiral and inner structure pattern speeds using a gaseous velocity field. The TW method is applied…
BhaBAR: Big Halpha kinematical sample of BARred spiral galaxies - I. Fabry-Perot Observations of 21 galaxies
O. Hernandez, C. Carignan, P. Amram +2
The Halpha gas kinematics of twenty-one representative barred spiral galaxies belonging to the BHaBAR sample is presented. The galaxies were observed with FaNTOmM, a Fabry-Perot in…
MHONGOOSE discovery of a gas-rich low-surface brightness galaxy in the Dorado Group
F. M. Maccagni, W. J. G. de Blok, P. E. Mancera Piña +28
We present the discovery of a low-mass gas-rich low-surface brightness galaxy in the Dorado Group, at a distance of 17.7 Mpc. Combining deep MeerKAT 21-cm observations from the Mee…
The catalog of radial velocity standard stars for the Gaia RVS: status and progress of the observations
L. Chemin, C. Soubiran, F. Crifo +8
A new full-sky catalog of Radial Velocity standard stars is being built for the determination of the Radial Velocity Zero Point of the RVS on board of Gaia. After a careful selecti…
Gaia Data Release 3: The extragalactic content
Gaia Collaboration, C. A. L. Bailer-Jones, D. Teyssier +444
The Gaia Galactic survey mission is designed and optimized to obtain astrometry, photometry, and spectroscopy of nearly two billion stars in our Galaxy. Yet as an all-sky multi-epo…
GHASP : An Halpha kinematic survey of spiral and irregular galaxies - VI. New Halpha data cubes for 108 galaxies
B. Epinat, P. Amram, M. Marcelin +7
We present the Fabry-Perot observations obtained for a new set of 108 galaxies that completes the GHASP survey (Gassendi HAlpha survey of SPirals). The GHASP survey consists of 3D…
Improved 3D Fabry-Perot Data Reduction Techniques
O. Daigle, C. Carignan, O. Hernandez +2
Improved data reduction techniques for 3D data cubes obtained from Fabry-Perot integral field spectroscopy are presented. They provide accurate sky emission subtraction and adaptiv…
Velocity measurement in the extensive [OIII] emission region 1.2° south-east of M31
P. Amram, C. Adami, B. Epinat +1
The discovery of a broad, 1.5 long filamentary [OIII] 5007 emission 1.2 south-east of the M31 nucleus has recently been reported. More than 100 hour…
A 5deg x 5deg deep HI survey of the M81 group: II. HI distribution and kinematics of IC 2574 and HIJASS J1021+68
A. Sorgho, L. Chemin, Z. S. Kam +2
We analyse the eastern region of a deep HI survey of the M81 group containing the dwarf galaxy IC 2574 and the HI complex HIJASS J1021+68, located between th…
MHONGOOSE -- A MeerKAT Nearby Galaxy HI Survey
W. J. G. de Blok, J. Healy, F. M. Maccagni +57
The MHONGOOSE (MeerKAT HI Observations of Nearby Galactic Objects: Observing Southern Emitters) survey maps the distribution and kinematics of the neutral atomic hydrogen (HI) gas…
MeerKAT HI commissioning observations of MHONGOOSE galaxy ESO 302-G014
W. J. G. de Blok, E. Athanassoula, A. Bosma +43
We present the results of three commissioning HI observations obtained with the MeerKAT radio telescope. These observations make up part of the preparation for the forthcoming MHON…
A 5deg x 5deg deep HI survey of the M81 group
A. Sorgho, T. Foster, C. Carignan +1
A 25 region, including the M81 complex (M81, M82, NGC 3077), NGC 2976 and IC2574, was mapped during ~3000 hours with the DRAO synthesis telescope. With a physical resol…
Evidence of ongoing radial migration in NGC 6754: Azimuthal variations of the gas properties
L. Sánchez-Menguiano, S. F. Sánchez, D. Kawata +9
Understanding the nature of spiral structure in disk galaxies is one of the main, and still unsolved questions in galactic astronomy. However, theoretical works are proposing new t…
ESA Voyage 2050 white paper -- Faint objects in motion: the new frontier of high precision astrometry
F. Malbet, U. Abbas, J. Alves +28
Sky survey telescopes and powerful targeted telescopes play complementary roles in astronomy. In order to investigate the nature and characteristics of the motions of very faint ob…
Physical conditions in the ISM of intensely star-forming galaxies at redshift~2
M. D. Lehnert, N. P. H. Nesvadba, L. Le Tiran +5
We analyze the physical conditions in the interstellar gas of 11 actively star-forming galaxies at z~2, based on integral-field spectroscopy from the ESO-VLT and HST/NICMOS imaging…
Constraining the LyC escape fraction from LEGUS star clusters with SIGNALS HII region observations: A pilot study of NGC 628
J. W. Teh, K. Grasha, M. R. Krumholz +23
The ionising radiation of young and massive stars is a crucial form of stellar feedback. Most ionising (Lyman-continuum; LyC, ) photons are absorbed close to the stars th…
SIGNALS: I. Survey Description
L. Rousseau-Nepton, R. P. Martin, C. Robert +60
SIGNALS, the Star formation, Ionized Gas, and Nebular Abundances Legacy Survey, is a large observing program designed to investigate massive star formation and HII regions in a sam…
The catalogue of radial velocity standard stars for Gaia I. Pre-launch release
C. Soubiran, G. Jasniewicz, L. Chemin +4
The Radial Velocity Spectrograph (RVS) on board of Gaia needs to be calibrated using stable reference stars known in advance. The catalogue presented here has being built for that…
Gaia Data Release 3: Summary of the content and survey properties
Gaia Collaboration, A. Vallenari, A. G. A. Brown +453
We present the third data release of the European Space Agency's Gaia mission, GDR3. The GDR3 catalogue is the outcome of the processing of raw data collected with the Gaia instrum…
Gaia Early Data Release 3: The celestial reference frame (Gaia-CRF3)
Gaia Collaboration, S. A. Klioner, L. Lindegren +448
Gaia-CRF3 is the celestial reference frame for positions and proper motions in the third release of data from the Gaia mission, Gaia DR3 (and for the early third release, Gaia EDR3…
High speed stars: III. Detailed abundances and binary nature of the extreme speed star GHS143
E. Caffau, P. Bonifacio L. Monaco, L. Sbordone +7
The Gaia satellite has provided the community with three releases containing astrometrical and photometric data as well as by products, such as stellar parameters and variability i…
A Virgo high-resolution Halpha kinematical survey : II. The Atlas
L. Chemin, C. Balkowski, V. Cayatte +8
A catalog of ionized gas velocity fields for a sample of 30 spiral and irregular galaxies of the Virgo cluster has been obtained by using three-dimensional optical data. The aim of…
The Gaia RVS benchmark stars II. A sample of stars selected for their Gaia high radial velocity
E. Caffau, D. Katz, A. Gómez +16
The Gaia satellite has already provided the astronomical community with three data releases, and the Radial Velocity Spectrometer (RVS) on board Gaia has provided the radial veloci…
Gaia Data Release 3: Mapping the asymmetric disc of the Milky Way
Gaia Collaboration, R. Drimmel, M. Romero-Gomez +453
With the most recent Gaia data release the number of sources with complete 6D phase space information (position and velocity) has increased to well over 33 million stars, while ste…
Calibration of the Gaia Radial Velocity Spectrometer from ground-based observations of candidate standard stars
L. Chemin, C. Soubiran, F. Crifo +4
The Radial Velocity Spectrometer (RVS) on board of Gaia will perform a large spectroscopic survey to determine the radial velocities of some 1.5x10^8 stars. We present the status o…
Gaia Early Data Release 3: The Gaia Catalogue of Nearby Stars
Gaia Collaboration, R. L. Smart, L. M. Sarro +420
We produce a clean and well-characterised catalogue of objects within 100\,pc of the Sun from the \G\ Early Data Release 3. We characterise the catalogue through comparisons to the…
Gaia Early Data Release 3: Structure and properties of the Magellanic Clouds
Gaia Collaboration, X. Luri, L. Chemin +417
We compare the Gaia DR2 and Gaia EDR3 performances in the study of the Magellanic Clouds and show the clear improvements in precision and accuracy in the new release. We also show…