Publications (75)
New methods to improve the decontamination of slitless spectra
Mostafa Bella, Shahram Hosseini, Thierry Contini +1
This paper proposes four new methods to decontaminate spectra of stars and galaxies resulting from slitless spectroscopy used in many space missions such as Euclid. These methods a…
MUSE-DARK-II: 3D morpho-kinematic modelling of lensed galaxies. Tully-Fisher relation of star-forming galaxies
Alexandre Jeanneau, Johan Richard, Nicolas F. Bouché +5
In a series of papers on lensed kinematics, we seek to combine the sensitivity of 3D forward modelling to low signal-to-noise ratio outskirts with the enhanced spatial resolution o…
Probing the chemical abundances in distant galaxies with 10-m class telescopes
Thierry Contini
The determination of chemical abundances in star-forming galaxies and the study of their evolution on cosmological timescales are powerful tools for understanding galaxy formation…
Hydrodynamics of high-redshift galaxy collisions: From gas-rich disks to dispersion-dominated mergers and compact spheroids
Frederic Bournaud, Damien Chapon, Romain Teyssier +7
Disk galaxies at high redshift (z~2) are characterized by high fractions of cold gas, strong turbulence, and giant star-forming clumps. Major mergers of disk galaxies at high redsh…
Identification and Characterization of Six Spectroscopically Confirmed Massive Protostructures at
Ekta A. Shah, Brian Lemaux, Benjamin Forrest +22
We present six spectroscopically confirmed massive protostructures, spanning a redshift range of in the Extended Chandra Deep Field South (ECDFS) field discovered as pa…
Populations of WC and WN stars in Wolf-Rayet galaxies
Daniel Schaerer, Thierry Contini, Daniel Kunth
We report the detection of WC stars in 5 Wolf-Rayet (WR) galaxies: He 2-10, NGC 3049, NGC 3125, NGC 5253 and Tol 89. The faint broad CIV5808 line requires sufficiently high S/N to…
MusE GAs FLOw and Wind (MEGAFLOW) VII. A NOEMA pilot program to probe molecular gas in galaxies with measured circumgalactic gas flows
Jonathan Freundlich, Nicolas F. Bouché, Thierry Contini +5
We present a pilot program using IRAM's NOrthern Extended Millimeter Array (NOEMA) to probe the molecular gas reservoirs of six star-forming galaxies whose circumgalact…
Starbursts in barred spiral galaxies. I. Mrk 712: a new Wolf-Rayet galaxy
Thierry Contini, Emmanuel Davoust, Suzanne Considere
We report the discovery of emission from Wolf-Rayet stars in a giant HII region 4.5 arcsec South of the nucleus of the IRAS barred spiral galaxy Mrk 712. The ratio of WNL to OV sta…
Neon and Argon optical emission lines in ionized gaseous nebulae: Implications and applications
Enrique Perez-Montero, Guillermo F. Hagele, Thierry Contini +1
In this work we present a study of the strong optical collisional emission lines of Ne and Ar in an heterogeneous sample of ionized gaseous nebulae for which it is possible to deri…
The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Evolution of the molecular gas in CO-selected galaxies
Manuel Aravena, Roberto Decarli, Jorge Gónzalez-López +31
We analyze the interstellar medium properties of a sample of sixteen bright CO line emitting galaxies identified in the ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (AS…
Mapping the Dynamics of a Giant Ly-alpha Halo at z=4.1 with MUSE: The Energetics of a Large Scale AGN-Driven Outflow around a Massive, High-Redshift Galaxy
Mark Swinbank, Joel Vernet, Ian Smail +7
We present deep MUSE integral-field unit (IFU) spectroscopic observations of the giant (~150 x 80 kpc) Ly-alpha halo around the z=4.1 radio galaxy TNJ J1338-1942. This 9-hr observa…
MusE GAs FLOw and Wind (MEGAFLOW) X. The cool gas and covering fraction of MgII in galaxy groups
Maxime Cherrey, Nicolas Bouché, Johannes Zabl +8
We present a study of the cool gas ( K) traced by MgII absorptions around groups of galaxies in the MEGAFLOW survey. Using a combination of two algorithms we blindly…
The MUSE Hubble Ultra Deep Field Survey: I. Survey description, data reduction and source detection
Roland Bacon, Simon Conseil, David Mary +24
We present the MUSE Hubble Ultra Deep Survey, a mosaic of nine MUSE fields covering 90\% of the entire HUDF region with a 10-hour deep exposure time, plus a deeper 31-hour exposure…
A SINFONI Integral Field Spectroscopy Survey for Galaxy Counterparts to Damped Lyman-alpha Systems - VI. Metallicity and Geometry as Gas Flow Probes
Celine Peroux, Samuel Quiret, Hadi Rahmani +7
The use of background quasars provides a powerful tool to probe the cool gas in the circum-galactic medium of foreground galaxies. Here, we present new observations with SINFONI an…
MusE GAs FLOw and Wind (MEGAFLOW) XI. Scaling relations between outflows and host galaxy properties
Ilane Schroetter, Nicolas F. Bouché, Johannes Zabl +5
Absorption line spectroscopy using background quasars can provide strong constraints on galactic outflows. In this paper, we investigate possible scaling relations between outflow…
The MUSE Extremely Deep Field: a first panoramic view of an Mg II emitting intragroup medium
Floriane Leclercq, Anne Verhamme, Benoit Epinat +21
Using the exquisite MUSE eXtremely Deep Field data, we report the discovery of an MgII emission nebula with an area above a 2 significance level of 1000 proper kpc, providi…
A young star-forming galaxy at z = 3.5 with an extended Ly\, halo seen with MUSE
Vera PatrÃcio, Johan Richard, Anne Verhamme +12
Spatially resolved studies of high redshift galaxies, an essential insight into galaxy formation processes, have been mostly limited to stacking or unusually bright objects. We pre…
MUSEQuBES: Calibrating the redshifts of Ly α emitters using stacked circumgalactic medium absorption profiles
Sowgat Muzahid, Joop Schaye, Raffaella Anna Marino +17
Lyman (Ly) emission lines are typically found to be redshifted with respect to the systemic redshifts of galaxies, likely due to resonant scattering of Ly photons. Her…
The MUSE Hubble Ultra Deep Field Survey XVI. The angular momentum of low-mass star-forming galaxies. A cautionary tale and insights from TNG50
Nicolas F. Bouché, Shy Genel, Alisson Pellissier +14
We investigate the specific angular momentum (sAM) profiles of intermediate redshift () star-forming galaxies (SFGs) in the relatively unexplored regime of low…
MusE GAs FLOw and Wind (MEGAFLOW) I: First MUSE results on background quasars
Ilane Schroetter, Nicolas Bouché, Martin Wendt +13
The physical properties of galactic winds are one of the keys to understand galaxy formation and evolution. These properties can be constrained thanks to background quasar lines of…
The MUSE Extremely Deep Field: Evidence for SFR-induced cores in dark-matter dominated galaxies at z=1
Nicolas F. Bouché, Samuel Bera, Davor Krajnovic +14
Disc-halo decomposition on rotationally supported star-forming galaxies (SFGs) at are often limited to massive galaxies () and rely on either deep In…
The MUSE Hubble Ultra Deep Field Survey XI. Constraining the low-mass end of the stellar mass - star formation rate relation at
Leindert A. Boogaard, Jarle Brinchmann, Nicolas Bouché +16
Star-forming galaxies have been found to follow a relatively tight relation between stellar mass () and star formation rate (SFR), dubbed the `star formation sequence'. A tu…
The MUSE Hubble Ultra Deep Field Survey XIII. Spatially resolved spectral properties of Lyman alpha haloes around star-forming galaxies at z > 3
Floriane Leclercq, Roland Bacon, Anne Verhamme +18
We present spatially resolved maps of six individually-detected Lyman alpha haloes (LAHs) as well as a first statistical analysis of the Lyman alpha (Lya) spectral signature in the…
Dark Galaxy Candidates at Redshift ~3.5 Detected with MUSE
Raffaella Anna Marino, Sebastiano Cantalupo, Simon J. Lilly +18
Recent theoretical models suggest that the early phase of galaxy formation could involve an epoch when galaxies are gas-rich but inefficient at forming stars: a "dark galaxy" phase…
Spectrophotometric properties of galaxies at intermediate redshifts (z ~ 0.2--1.0) II. The Luminosity -- Metallicity relation
Fabrice Lamareille, Thierry Contini, Jarle Brinchmann +3
We present the gas-phase oxygen abundance (O/H) for a sample of 131 star-forming galaxies at intermediate redshifts (). The sample selection, the spectroscopic observati…
Unveiling the counter-rotating nature of the kinematically distinct core in NGC5813 with MUSE
Davor Krajnovic, Peter M. Weilbacher, Tanya Urrutia +9
MUSE observations of NGC5813 reveal a complex structure in the velocity dispersion map, previously hinted by SAURON observations. The structure is reminiscent of velocity dispersio…
The ALMA Spectroscopic Survey in the HUDF: CO emission lines and 3 mm continuum sources
Jorge González-López, Roberto Decarli, Ricardo Pavesi +29
The ALMA SPECtroscopic Survey in the {\it Hubble} Ultra Deep Field is an ALMA large program that obtained a frequency scan in the 3\,mm band to detect emission lines from the molec…
Spectrophotometric properties of galaxies at intermediate redshifts (z ~ 0.2--1.0) I. Sample description, photometric properties and spectral measurements
Fabrice Lamareille, Thierry Contini, Jean-François Le Borgne +3
We present the spectrophotometric properties of a sample of 141 emission-line galaxies at redshifts in the range with a peak around . The analysis is bas…
The MUSE Hubble Ultra Deep Field surveys: Data release II
Roland Bacon, Jarle Brinchmann, Simon Conseil +30
We present the second data release of the MUSE Hubble UDF surveys, which includes the deepest spectroscopic survey ever performed. The MUSE data, with their 3D content, amazing dep…
MusE GAs FLOw and Wind (MEGAFLOW) IV: A two sightline tomography of a galactic wind
Johannes Zabl, Nicolas F. Bouché, Ilane Schroetter +8
Galactic outflows are thought to eject baryons back out to the circum-galactic medium (CGM). Studies based on metal absorption lines (MgII in particular) in the spectra of backgrou…
The LISA Astrophysics MBHcatalogues Project: A comparison of predictions of simulated massive black hole binaries
David Izquierdo-Villalba, Melanie Habouzit, Matteo Bonetti +67
In the hierarchical paradigm of galaxy formation, central massive black holes (MBHs) are expected to coalesce after the merger of their host galaxies. One of the main goals of the…
Angular momentum evolution of galaxies over the past 10-Gyr: A MUSE and KMOS dynamical survey of 400 star-forming galaxies from z=0.3-1.7
Mark Swinbank, Chris Harrison, James Trayford +23
We present a MUSE and KMOS dynamical study 405 star-forming galaxies at redshift z=0.28-1.65 (median redshift z=0.84). Our sample are representative of star-forming, main-sequence…
The VLT SINFONI Mg ii Program for Line Emitters (SIMPLE) II: background quasars probing z 1 galactic winds
Ilane Schroetter, Nicolas Bouché, Céline Péroux +3
The physical properties of galactic winds are of paramount importance for our understanding of galaxy formation. Fortunately, they can be constrained using background quasars passi…
New catalogue of Wolf-Rayet galaxies and high-excitation extra-galactic HII regions
Daniel Schaerer, Thierry Contini, Maximilien Pindao
We present a new compilation of Wolf-Rayet (WR) galaxies and extra-galactic HII regions showing BROAD HeII emission drawn from the literature. Relevant information on the presence…
Populations of WC and WN stars in WR galaxies: new constraints on starburst parameters
Thierry Contini, Daniel Schaerer, Daniel Kunth
Detection and analysis of Wolf-Rayet (WR) star populations in young starbursts is a powerful tool to reveal the properties of the star-forming events. We present new high S/N optic…
MusE GAs FLOw and Wind (MEGAFLOW) II. A study of gas accretion around star-forming galaxies with background quasars
Johannes Zabl, Nicolas F. Bouché, Ilane Schroetter +10
We use the MusE GAs FLOw and Wind (MEGAFLOW) survey to study the kinematics of extended disk-like structures of cold gas around star-forming galaxies. The combination o…
Wolf-Rayet stars as tracing the AGN-starburst connection
Daniel Kunth, Thierry Contini
We stress the importance of Wolf-Rayet stars for the understanding of the AGN phenomenon in galaxies. WR stars provide an unique opportunity to explore from the ground whether non-…
The ALMA Spectroscopic Survey in the HUDF: Nature and physical properties of gas-mass selected galaxies using MUSE spectroscopy
Leindert A. Boogaard, Roberto Decarli, Jorge González-López +31
We discuss the nature and physical properties of gas-mass selected galaxies in the ALMA spectroscopic survey (ASPECS) of the Hubble Ultra Deep Field (HUDF). We capitalize on the de…
The Star Formation Burstiness and Ionizing Efficiency of Low-mass Galaxies
Hakim Atek, Lukas Furtak, Pascal Oesch +5
We investigate the burstiness of star formation and the ionizing efficiency of a large sample of galaxies at using HST grism spectroscopy and deep ultraviolet (UV)…
MusE GAs Flow and Wind (MEGAFLOW) VI. A study of CIV and MgII absorbing gas surrounding [OII] emitting galaxies
Ilane Schroetter, Nicolas F. Bouché, Johannes Zabl +7
Using the MEGAFLOW survey, which consists of a combination of MUSE and UVES observations of 22 quasar fields selected to contain strong MgII absorbers, we measure covering fraction…
Discovery of optically emitting circumgalactic nebulae around the majority of UV-luminous quasars at intermediate redshift
Sean D. Johnson, Zhuoqi Will Liu, Jennifer I. Li +15
We report the discovery of large ionized, [O II] emitting circumgalactic nebulae around the majority of thirty UV luminous quasars at observed with deep, wide-field int…
A MUSE view of the multiple interacting system HCG 31
Diego A. Gómez-Espinoza, Sergio Torres-Flores, Verónica Firpo +4
We present, for the first time, spatially resolved spectroscopy for the entire Hickson Compact Group 31 obtained with the MUSE instrument at the VLT,and an in-depth analysis of thi…
The MUSE Hubble Ultra Deep Field Survey: IV. Global properties of C III] emitters
Michael V. Maseda, Jarle Brinchmann, Marijn Franx +12
The C III] 1907,1909 emission doublet has been proposed as an alternative to Lyman-alpha in redshift confirmations of galaxies at z > 6 since it is not attenuated by the largely ne…
The impact of the nitrogen-to-oxygen ratio on ionized nebulae diagnostics based on [NII] emission lines
Enrique Perez-Montero, Thierry Contini
We study the relation between nitrogen and oxygen abundances as a function of metallicity for a sample of emission-line objects for which a direct measurement of the metallicity ha…
Dust-to-gas ratios in the starburst regions of luminous infrared galaxies
Marcella Contini, Thierry Contini
We investigate the properties of dust and dust-to-gas ratios in different starburst regions of luminous infrared galaxies (LIGs). We refer to the sample of seven LIGs recently obse…
The MUSE Hubble Ultra Deep Field Survey: XII. MgII emission and absorption in star-forming galaxies
Anna Feltre, Roland Bacon, Laurence Tresse +18
The physical origin of the near-ultraviolet MgII emission remains an under-explored domain, contrary to more typical emission lines detected in the spectra of star-forming galaxies…
Inferring gas-phase metallicity gradients of galaxies at the seeing limit: A forward modelling approach
David Carton, Jarle Brinchmann, Maryam Shirazi +7
We present a method to recover the gas-phase metallicity gradients from integral field spectroscopic (IFS) observations of barely resolved galaxies. We take a forward modelling app…
Measuring the average molecular gas content of star-forming galaxies at
Leindert A. Boogaard, Rychard J. Bouwens, Dominik Riechers +15
We study the molecular gas content of 24 star-forming galaxies at , with a median stellar mass of M, from the MUSE Hubble Ultra Deep Field (HUDF) Survey…
Infrared line ratios revealing starburst conditions in galaxies
Sueli M. Viegas, Marcella Contini, Thierry Contini
The physical conditions in typical starburst galaxies are investigated through critical infrared (IR) line ratios, as previously suggested by Lutz et al. (1998, A&A, 333, L75). The…
The MUSE Hubble Ultra Deep Field Survey: VII. FeII* Emission in Star-Forming Galaxies
Hayley Finley, Nicolas Bouché, Thierry Contini +15
Non-resonant FeII* 2365, 2396, 2612, 2626 emission can potentially trace galactic winds in emission and provide useful constraints to wind models. From the 3'x3' mosaic of the Hubb…
The Massive Nearby SBNGs: Young Galaxies in Formation
Roger Coziol, Thierry Contini, Emmanuel Davoust +1
We discuss the implications of the recent discovery that Starburst Nucleus Galaxies (SBNGs) have lower oxygen abundances than "normal galaxies" of the same morphological type. Our…
The MUSE Hubble Ultra Deep Field Survey: V. Spatially resolved stellar kinematics of galaxies at redshift
Adrien Guerou, Davor Krajnovic, Benoit Epinat +11
We present spatially resolved stellar kinematic maps, for the first time, for a sample of 17 intermediate redshift galaxies (0.2 < z < 0.8). We used deep MUSE/VLT integral field sp…
The ALMA Spectroscopic Survey in the HUDF: Constraining the Molecular Content at with CO stacking of MUSE detected Galaxies
Hanae Inami, Roberto Decarli, Fabian Walter +19
We report molecular gas mass estimates obtained from a stacking analysis of CO line emission in the ALMA Spectroscopic Survey (ASPECS) using the spectroscopic redshifts from the op…
MUSE Spectroscopic Identifications of Ultra-Faint Emission Line Galaxies with M -15
Michael V. Maseda, Roland Bacon, Marijn Franx +16
Using an ultra-deep blind survey with the MUSE integral field spectrograph on the ESO Very Large Telescope, we obtain spectroscopic redshifts to a depth never explored before: gala…
MUSE Deep-Fields: The Lya Luminosity Function in the Hubble Deep Field South at 2.91 < z < 6.64
Alyssa B. Drake, Bruno Guiderdoni, Jeremy Blaizot +14
We present the first estimate of the Lyα luminosity function using blind spectroscopy from the Multi Unit Spectroscopic Explorer, MUSE, in the Hubble Deep Field South. Using autom…
The MUSE eXtremely Deep Field: Detections of circumgalactic SiII* emission at z>~2
Haruka Kusakabe, Valentin Mauerhofer, Anne Verhamme +17
The circumgalactic medium (CGM) serves as a baryon reservoir that connects galaxies to the intergalactic medium and fuels star formation. The spatial distribution of the metal-enri…
The ALMA Spectroscopic Survey in the HUDF: the molecular gas content of galaxies and tensions with IllustrisTNG and the Santa Cruz SAM
Gergö Popping, Annalisa Pillepich, Rachel S. Somerville +27
The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS) provides new constraints for galaxy formation models on the molecular gas properties of galaxies. We compare r…
The Evolution of the Baryons Associated with Galaxies Averaged over Cosmic Time and Space
Fabian Walter, Chris Carilli, Marcel Neeleman +30
We combine the recent determination of the evolution of the cosmic density of molecular gas (H_2) using deep, volumetric surveys, with previous estimates of the cosmic density of s…
The Science Case for Multi-Object Spectroscopy on the European ELT
Chris Evans, Mathieu Puech, Jose Afonso +68
This White Paper presents the scientific motivations for a multi-object spectrograph (MOS) on the European Extremely Large Telescope (E-ELT). The MOS case draws on all fields of co…
Probing the molecular gas content of galaxies in an over-dense group at z~0.7: a test case for environmental quenching
Jonathan Freundlich, Benoît Epinat, Thierry Contini +14
To probe the impact of group environment on molecular gas reservoirs at intermediate redshift, we observed the CO(2-1) emission in the galaxy group COSMOS-Gr30 at with…
MUSE spectroscopy of the ULX NGC 1313 X-1: a shock-ionised bubble, an X-ray photoionised nebula, and two supernova remnants
Andrés Gúrpide, Maxime Parra, Olivier Godet +2
The presence of large ionised gaseous nebulae found around some ultraluminous X-ray sources (ULXs) provides the means to assess the mechanical and radiative feedback of the central…
Exploring the mass assembly of the early-type disc galaxy NGC3115 with MUSE
Adrien Guérou, Eric Emsellem, Davor KrajnoviÄ +3
We present MUSE integral field spectroscopic data of the S0 galaxy NGC 3115 obtained during the instrument commissioning at the ESO Very Large Telescope (VLT). We analyse the galax…
The MUSE Hubble Ultra Deep Field Survey VIII : Extended Lyman-alpha haloes around high-redshift star-forming galaxies
Floriane Leclercq, Roland Bacon, Lutz Wisotzki +17
We report the detection of extended Lyman-alpha (Lya) haloes around 145 individual star-forming galaxies at redshifts 3<z<6 in the Hubble Ultra Deep Field observed with the Multi-U…
Galactic Winds with MUSE: A Direct Detection of FeII* Emission from a z = 1.29 Galaxy
Hayley Finley, Nicolas Bouché, Thierry Contini +12
Emission signatures from galactic winds provide an opportunity to directly map the outflowing gas, but this is traditionally challenging because of the low surface brightness. Usin…
The Tully-Fisher relation in dense groups at in the MAGIC survey
Valentina Abril-Melgarejo, Benoît Epinat, Wilfried Mercier +11
Galaxies in dense environments are subject to interactions and mechanisms which directly affect their evolution by lowering their gas fractions and reducing their star-forming capa…
MusE GAs FLOw and Wind (MEGAFLOW) VIII. Discovery of a MgII emission halo probed by a quasar sightline
Johannes Zabl, Nicolas F. Bouché, Lutz Wisotzki +11
Using deep (11.2hr) VLT/MUSE data from the MEGAFLOW survey, we report the first detection of extended MgII emission from a galaxy's halo that is probed by a quasar sightline. The M…
Starbursts in barred spiral galaxies. VI. HI observations and the K-band Tully-Fisher relation
Emmanuel Davoust, Thierry Contini
This paper is primarily a study of the effect of a bar on the neutral hydrogen (HI) content of starburst and Seyfert galaxies. We also make comparisons with a sample of ``normal''…
Multi-wavelength Study of Galaxy Rotation Curves and its Application to Cosmology
Amelie Saintonge, Christian Marinoni, Karen L. Masters +3
Rotation information for spiral galaxies can be obtained through the observation of different spectral lines. While the Halpha(6563 A) line is often used for galaxies with low to m…
The ALMA Spectroscopic Survey in the HUDF: CO luminosity functions and the molecular gas content of galaxies through cosmic history
Roberto Decarli, Fabian Walter, Jorge Gónzalez-López +34
We use the results from the ALMA large program ASPECS, the spectroscopic survey in the Hubble Ultra Deep Field (HUDF), to constrain CO luminosity functions of galaxies and the resu…
First gas-phase metallicity gradients of galaxies with MUSE
David Carton, Jarle Brinchmann, Thierry Contini +8
Galaxies at low-redshift typically possess negative gas-phase metallicity gradients (centres more metal-rich than their outskirts). Whereas, it is not uncommon to observe positive…
Wolf-Rayet Stars in Very Young Starburst Galaxies
Thierry Contini
Preliminary results from spectrophotometric observations of galaxies with very young starbursts are presented. Starburst galaxies with an age of the burst in the range between 3 an…
The MUSE Extremely Deep Field: the Cosmic Web in Emission at High Redshift
Roland Bacon, David Mary, Thibault Garel +29
We report the discovery of diffuse extended Ly-alpha emission from redshift 3.1 to 4.5, tracing cosmic web filaments on scales of 2.5-4 comoving Mpc. These structures have been obs…
MusE GAs FLOw and Wind (MEGAFLOW) III: galactic wind properties using background quasars
Ilane Schroetter, Nicolas F. Bouché, Johannes Zabl +10
We present results from our on-going MusE GAs FLOw and Wind (MEGAFLOW) survey, which consists of 22 quasar lines-of-sight, each observed with the integral field unit (IFU) MUSE and…
Ionised gas structure of 100 kpc in an over-dense region of the galaxy group COSMOS-Gr30 at z ~ 0.7
Benoît Epinat, Thierry Contini, Hayley Finley +16
We report the discovery of a 10^4 kpc^2 gaseous structure detected in [OII] in an over-dense region of the COSMOS-Gr30 galaxy group at z~0.725 thanks to deep MUSE Guaranteed Time O…
Detection of Wolf-Rayet stars of WN and WC subtype in Super Star Clusters of NGC 5253
Daniel Schaerer, Thierry Contini, Daniel Kunth +1
We present spectroscopic observations of the central star clusters in NGC 5253 the aim of which is to search for WC stars. Our observations show the presence of Wolf-Rayet (WR) sta…