Publications (63)
UV to IR SEDs of UV selected galaxies in the ELAIS fields: evolution of dust attenuation and star formation activity from z=0.7 to z=0.2
J. Iglesias-Paramo, V. Buat, J. Hernandez-Fernandez +34
We study the ultraviolet to far-infrared (hereafter UV-to-IR) SEDs of a sample of intermediate redshift (0.2 < z < 0.7) UV-selected galaxies from the ELAIS-N1 and ELAIS-N2 fields b…
Chemical and Photometric Evolution of Extended Ultraviolet Disks: Optical Spectroscopy of M83 (NGC5236) and NGC4625
A. Gil de Paz, B. F. Madore, S. Boissier +21
We present the results from the analysis of optical spectra of 31 Halpha-selected regions in the extended UV (XUV) disks of M83 (NGC5236) and NGC4625 recently discovered by GALEX.…
The GALEX Ultraviolet Atlas of Nearby Galaxies
A. Gil de Paz, S. Boissier, B. F. Madore +23
We present images, integrated photometry, surface-brightness and color profiles for a total of 1034 nearby galaxies recently observed by the GALEX satellite in its far-ultraviolet…
GALEX Ultraviolet Photometry of Globular Clusters in M31
S. -C. Rey, R. M. Rich, Y. -W. Lee +27
We present ultraviolet photometry for globular clusters (GCs) in M31 from 15 square deg of imaging using the Galaxy Evolution Explorer (GALEX). We detect 200 and 94 GCs with certai…
GALEX colours of quasars and intergalactic medium opacity at low redshift
J. -M. Deharveng, B. Milliard, C. Peroux +1
The distribution of neutral hydrogen in the intergalactic medium (IGM) is currently explored at low-z by means of UV spectroscopy of quasars. We propose an alternative approach bas…
Recent star formation in nearby galaxies from GALEX imaging:M101 and M51
Luciana Bianchi, D. Thilker, D. Burgarella +24
The GALEX (Galaxy Evolution Explorer) Nearby Galaxies Survey is providing deep far-UV and near-UV imaging for a representative sample of galaxies in the local universe. We present…
The UV (GALEX) and FIR (ASTRO-F) All Sky Surveys: the measure of the dust extinction in the local universe
V. Buat, T. T. Takeuchi, A. Boselli +9
Before the end of 2002 will be launched the GALEX satellite (a NASA/SMEX project) which will observe all the sky in Ultraviolet (UV) through filters at 1500 and 2300 A down to m(AB…
New Constraints on the Star Formation Histories and Dust Attenuation of Galaxies in the Local Universe from GALEX
Samir Salim, Stephane Charlot, R. Michael Rich +23
We derive a variety of physical parameters including star formation rates (SFRs), dust attenuation and burst mass fractions for 6472 galaxies observed by the Galaxy Evolution Explo…
The ultraviolet extragalactic background light: dust extinction and the evolution of the cosmic star formation rate from z=0 to 0.6
J. -M. Deharveng, V. Buat, B. Milliard
We show that the accumulated light of galaxies in the ultraviolet can be evaluated from their luminosity density as a function of the evolution of the cosmic star formation rate an…
The GALEX UV luminosity function of the cluster of galaxies Abell 1367
L. Cortese, A. Boselli, G. Gavazzi +24
We present the GALEX NUV (2310 A) and FUV (1530 A) galaxy luminosity functions of the nearby cluster of galaxies A1367 in the magnitude range -20.3< M_AB < -13.3. The luminosity fu…
Group quenching and galactic conformity at low redshift
M. Treyer, K. Kraljic, S. Arnouts +13
We quantify the quenching impact of the group environment using the spectroscopic survey Galaxy and Mass Assembly (GAMA) to z=0.2. The fraction of red (quiescent) galaxies, whether…
The Lyman continuum radiation escaping from galaxies
J. -M. Deharveng, S. Faisse, B. Milliard +1
The H-alpha luminosity density of galaxies is used to calculate the local diffuse radiation field at the Lyman limit as resulting from star formation in the universe. The fraction…
Observable Signatures of the low-z Circum-Galactic and Inter-Galactic Medium : UV Line Emission in Simulations
S. Frank, Y. Rasera, D. Vibert +8
We present for the first time predictions for UV line emission of intergalactic and circumgalactic gas from Adaptive Mesh Resolution (AMR) Large Scale Structure (LSS) simulations a…
EMIR, the near-infrared camera and multi-object spectrograph for the GTC
F. Garzón, M. Balcells, J. Gallego +18
We present EMIR, a powerful near-infrared (NIR) camera and multi-object spectrograph (MOS) installed at the Nasmyth focus of the 10.4 m GTC. EMIR was commissioned in mid-2016 and i…
Discovery of a z=0.808 damped Lyman-alpha system candidate in a UV selected quasar spectrum
V. Le Brun, M. Viton, B. Milliard
We present the observation of a new intermediate redshift damped Lyman-alpha absorption system candidate, discovered in the course of a spectroscopic follow-up for identifying the…
The ESO UVES Advanced Data Products Quasar Sample - VI. Sub-Damped Lyman- Metallicity Measurements and the Circum-Galactic Medium
S. Quiret, C. Péroux, T. Zafar +8
The Circum-Galactic Medium (CGM) can be probed through the analysis of absorbing systems in the line-of-sight to bright background quasars. We present measurements of the metallici…
Dissecting Galaxy Colors with GALEX, SDSS, and Spitzer
B. D. Johnson, D. Schiminovich, M. Seibert +21
We combine data from SDSS and the GALEX and Spitzer observatories to create a sample of galaxies observed homogeneously from the UV to the Far-IR. This sample, consisting of ~460 g…
Dust attenuation in the nearby Universe: comparison between galaxies selected in the ultraviolet or in the infrared
V. Buat, J. Iglesias-Paramo, M. Seibert +27
We compare the dust attenuation properties of two samples of galaxies purely selected in the near-ultraviolet (NUV) band (1750-2750 A, lambda_m = 2310 A) and in the far-infrared (F…
An Ultraviolet-Selected Galaxy Redshift Survey: New Estimates of the Local Star Formation Rate
M. A. Treyer, R. S. Ellis, B. Milliard +2
We present the first results of an ongoing spectroscopic survey of galaxies selected in the rest-frame ultraviolet (UV). The redshift distribution extends over 0<z<0.5 and a high f…
Deep GALEX Imaging of the HST/COSMOS Field: A First Look at the Morphology of z~0.7 Star-forming Galaxies
M. A. Zamojski, D. Schiminovich, R. M. Rich +34
We present a study of the morphological nature of redshift z~0.7 star-forming galaxies using a combination of HST/ACS, GALEX and ground-based images of the COSMOS field. Our sample…
The Look-back Time Evolution of Far-UV Flux from Elliptical Galaxies: The Fornax Cluster and Abell 2670
Y. -W. Lee, C. H. Ree, R. M. Rich +30
In order to investigate the origin of the far-UV (FUV) flux from the early-type galaxies, Galaxy Evolution Explorer (GALEX) is collecting the UV data for the elliptical-rich cluste…
The Ultraviolet Luminosity Function of GALEX Galaxies at Photometric Redshifts Between 0.07 and 0.25
T. Budavari, A. S. Szalay, S. Charlot +24
We present measurements of the UV galaxy luminosity function and the evolution of luminosity density from GALEX observations matched to the Sloan Digital Sky Survey (SDSS). We anal…
Constraints on the Lyman continuum radiation from galaxies: first results with FUSE on Mrk 54
J. -M. Deharveng, V. Buat, V. Le Brun +4
We present Far Ultraviolet Spectroscopic Explorer observations of the star-forming galaxy Mrk 54 at z = 0.0448. The Lyman continuum radiation is not detected above the HI absorptio…
Galaxy evolution in the metric of the Cosmic Web
K. Kraljic, S. Arnouts, C. Pichon +19
The role of the cosmic web in shaping galaxy properties is investigated in the GAMA spectroscopic survey in the redshift range . The stellar mass, du…
The GALEX-VVDS Measurement of the Evolution of the Far-Ultraviolet Luminosity Density and the Cosmic Star Formation Rate
D. Schiminovich, O. Ilbert, S. Arnouts +10
In a companion paper (Arnouts et al. 2004) we presented new measurements of the galaxy luminosity function at 1500 Angstroms out to z~1 using GALEX-VVDS observations (1039 galaxies…
Extinction radial profiles of M83 from GALEX UV imaging
S. Boissier, A. Gil de Paz, B. F. Madore +24
We use the far-UV (FUV) and near-UV (NUV) images of M83 obtained by GALEX to compute the radial profile of the UV spectral slope in the star forming disk. We briefly present a mode…
The VVDS-SWIRE-GALEX-CFHTLS surveys: Physical properties of galaxies at z below 1.2 from photometric data
C. J. Walcher, F. Lamareille, D. Vergani +42
We intend to show that it is possible to derive the physical parameters of galaxies from their broad-band spectral energy distribution out to a redshift of 1.2. This method has the…
The Ultraviolet Galaxy Luminosity Function from GALEX data: Color Dependent Evolution at Low Redshift
M. Treyer, T. Wyder, D. Schiminovich +22
We present measurements of the FUV (1530A) and NUV (2310A) galaxy luminosity functions (LF) at low redshift (z<0.2) from GALEX observations matched to the 2dF Galaxy Redshift Surve…
The UV luminosity function of nearby clusters of galaxies
L. Cortese, G. Gavazzi, A. Boselli +3
We present the UV composite luminosity function for galaxies in the Virgo, Coma and Abell 1367 clusters. The luminosity function (LF) is well fitted by a Schechter function with M*…
Large-Amplitude Ultraviolet Variations in the RR Lyrae Star ROTSE-I J143753.84+345924.8
J. M. Wheatley, B. Y. Welsh, O. H. W. Siegmund +22
The NASA Galaxy Evolution Explorer (GALEX) satellite has obtained simultaneous near and far ultraviolet light curves of the ROTSE-I Catalog RR Lyrae ab-type variable star J143753.8…
Classification and Characterization of Objects from GALEX and SDSS surveys
Luciana Bianchi, M. Seibert, W. Zheng +22
We use the GALEX (Galaxy Evolution Explorer) Medium Imaging Survey (MIS) and All-Sky Imaging Survey (AIS) data available in the first internal release, matched to the SDSS catalogs…
UV-optical colours as probes of early-type galaxy evolution
S. Kaviraj, K. Schawinski, J. E. G. Devriendt +25
We have studied ~2100 early-type galaxies in the SDSS DR3 which have been detected by the GALEX Medium Imaging Survey (MIS), in the redshift range 0 < z < 0.11. Combining GALEX UV…
GALEX Observations of the Ultraviolet Halos of NGC 253 and M82
C. G. Hoopes, T. M. Heckman, D. K. Strickland +25
We present Galaxy Evolution Explorer (GALEX) images of the prototypical edge-on starburst galaxies M82 and NGC253. Our initial analysis is restricted to the complex of ultraviolet…
GALEX UV Spectroscopy and Deep Imaging of LIRGs in the ELAIS S1 field
D. Burgarella, V. Buat, T. Small +23
The ELAIS S1 field was observed by GALEX in both its Wide Spectroscopic and Deep Imaging Survey modes. This field was previously observed by the Infrared Space Observatory and we m…
Star formation in the nearby universe: the ultraviolet and infrared points of view
J. Iglesias-Paramo, V. Buat, T. T. Takeuchi +27
This work presents the main ultraviolet (UV) and far-infrared (FIR) properties of two samples of nearby galaxies selected from the GALEX (à , hereafter NUV) and IRAS ($λ…
MUSE-ALMA Halos V: Physical properties and environment of z < 1.4 HI quasar absorbers
A. Hamanowicz, C. Peroux, M. A. Zwaan +11
We present results of the MUSE-ALMA Halos, an ongoing study of the Circum-Galactic Medium (CGM) of low redshift galaxies (z < 1.4), currently comprising 14 strong HI absorbers in f…
UV and FIR selected samples of galaxies in the local Universe. Dust extinction and star formation rates
J. Iglesias-Paramo, V. Buat, J. Donas +2
We have built two samples of galaxies selected at 0.2micron (hereafter UV) and 60micron (hereafter FIR) covering a sky area of 35.36 deg^2. The UV selected sample contains 25 galax…
Mid-IR and Far-UV observations of the star-forming ring of M 31
L. Pagani, J. Lequeux, D. Cesarsky +4
We present mid-IR images of a 15'x15' field in the south-west part of the Andromeda galaxy M 31 obtained with the ISOCAM camera on board ISO. We also present a 20" resolution far-U…
Designing Future Dark Energy Space Missions: II. Photometric Redshift of Space Weak Lensing Optimized Survey
S. Jouvel, J-P. Kneib, G. Bernstein +7
Accurate weak-lensing analysis requires not only accurate measurement of galaxy shapes but also precise and unbiased measurement of galaxy redshifts. The photometric redshift techn…
Ultraviolet Detection of the Tidal Disruption of a Star by a Supermassive Black Hole
S. Gezari, D. C. Martin, B. Milliard +10
A supermassive black hole in the nucleus of a galaxy will be revealed when a star passes close enough to be torn apart by tidal forces and a flare of radiation is emitted by the st…
GALEX UV observations of the interacting galaxy NGC 4438 in the Virgo cluster
A. Boselli, S. Boissier, L. Cortese +26
We present GALEX NUV (2310 A) and FUV (1530 A) images of the interacting galaxy NGC 4438 (Arp 120) in the center of the Virgo cluster. These images show an extended (20 kpc) tidal…
Designing Future Dark Energy Space Mission: I. Building Realistic Galaxy Spectro-Photometric Catalogs and their first applications
S. Jouvel, J-P. Kneib, O. Ilbert +12
Future dark energy space missions such as JDEM and EUCLID are being designed to survey the galaxy population to trace the geometry of the universe and the growth of structure, whic…
UV/Optical Detections of Candidate Tidal Disruption Events by GALEX and CFHTLS
S. Gezari, S. Basa, D. C. Martin +11
We present two luminous UV/optical flares from the nuclei of apparently inactive early-type galaxies at z=0.37 and 0.33 that have the radiative properties of a flare from the tidal…
Panoramic GALEX FUV and NUV imaging of M31 and M33
D. A. Thilker, C. G. Hoopes, L. Bianchi +25
We present Galaxy Evolution Explorer (GALEX) far-UV and near-UV mosaic observations covering the entirety of M31 and M33. For both targets, we measure the decline of surface bright…
Systematics of the Ultraviolet Rising flux in a GALEX/SDSS sample of Early-type Galaxies
R. M. Rich, S. Salim, J. Brinchmann +24
We present ultraviolet photometry for a sample of morphologically early-type galaxies selected by matching the Sloan Digital Sky Survey Data Release 1 with the GALEX Medium and All…
An Ultraviolet Redshift Survey: A New Estimate of the Local Star Formation Rate
M. A. Treyer, R. S. Ellis, B. Milliard +1
We present the first results of an ongoing spectroscopic survey of galaxies selected in the rest-frame ultraviolet. The source catalogue was constructed from a flux-limited sample…
Emission from the circumgalactic medium: from cosmological zoom-in simulations to multiwavelength observables
R. Augustin, S. Quiret, B. Milliard +14
We simulate the flux emitted from galaxy halos in order to quantify the brightness of the circumgalactic medium (CGM). We use dedicated zoom-in cosmological simulations with the hy…
The GALEX-VVDS Measurement of the Evolution of the 1500A Luminosity Function
S. Arnouts, D. Schiminovich, O. Ilbert +8
We present the first measurement of the galaxy luminosity function at 1500A between 0.2<z<1.2 based on GALEX-VVDS observations (1000 spectroscopic redshifts for galaxies with NUV<2…
The On-Orbit Performance of the Galaxy Evolution Explorer
P. Morrissey, D. Schiminovich, T. A. Barlow +35
We report the first year on-orbit performance results for the Galaxy Evolution Explorer (GALEX), a NASA Small Explorer that is performing a survey of the sky in two ultraviolet ban…
The VIPERS Multi-Lambda Survey. I. UV and NIR Observations, multi-color catalogues and photometric redshifts
T. Moutard, S. Arnouts, O. Ilbert +15
We present observations collected in the CFHTLS-VIPERS region in the ultraviolet (UV) with the GALEX satellite (far and near UV channels) and the near infrared with the CFHT/WIRCam…
UV observation of a quasar sample
S. Faïsse, B. Milliard
The spectral indexes distribution of a quasar sample is derived from a far-UV survey. A red average spectrum is found which comes in support of significant evolution of the QSO spe…
Recent Star Formation in the Extreme Outer Disk of M83
D. A. Thilker, L. Bianchi, S. Boissier +24
Ultraviolet imaging with the Galaxy Evolution Explorer (GALEX) has revealed an extensive sample of UV-bright stellar complexes in the extreme outer disk of M83, extending to about…
Far infrared and Ultraviolet emissions of individual galaxies at z=0: selection effects on the estimate of the dust extinction
V. Buat, J. Donas, B. Milliard +1
We have cross-correlated Far Infrared (IRAS) and UV (FOCA) observations of galaxies to construct a sample of FIR selected galaxies with a UV observation at 0.2 microns. The FIR and…
A comparative study of the spatial distribution of ultraviolet and far-infrared fluxes from M 101
C. C. Popescu, R. J. Tuffs, B. F. Madore +23
The total ultraviolet (UV) flux (from 1412 to 2718 AA) of M 101 is compared on a pixel-to-pixel basis with the total far-infrared (FIR) flux (from 60 to 170 micron), using the maps…
An Ultraviolet-Selected Galaxy Redshift Survey - II: The Physical Nature of Star Formation in an Enlarged Sample
M. Sullivan, M. A. Treyer, R. S. Ellis +3
We present further spectroscopic observations for a sample of galaxies selected in the vacuum ultraviolet (UV) at 2000 Ã from the FOCA balloon-borne imaging camera of Milliard et a…
DUNE: The Dark Universe Explorer
A. Refregier, O. Boulade, Y. Mellier +22
Understanding the nature of Dark Matter and Dark Energy is one of the most pressing issues in cosmology and fundamental physics. The purpose of the DUNE (Dark UNiverse Explorer) mi…
UV Emission from Stellar Populations within Tidal Tails: Catching the Youngest Galaxies in Formation?
S. G. Neff, D. A. Thilker, M. Seibert +22
New GALEX observations have detected significant FUV (1530 Angstroms) and NUV (2310 Angstroms) emission from stellar substructures within the tidal tails of four ongoing galaxy mer…
GALEX-SDSS Catalogs for Statistical Studies
T. Budavari, S. Heinis, A. S. Szalay +23
We present a detailed study of the Galaxy Evolution Explorer's photometric catalogs with special focus on the statistical properties of the All-sky and Medium Imaging Surveys. We i…
The effect of environment on the UV colour-magnitude relation of early-type galaxies
K. Schawinski, S. Kaviraj, S. Khochfar +23
We use \textit{GALEX} (Galaxy Evolution Explorer) near-UV (NUV) photometry of a sample of early-type galaxies selected in \textit{SDSS} (Sloan Digital Sky Survey) to study the UV c…
The Local Universe as Seen in Far-Infrared and in Far-Ultraviolet: A Global Point of View on the Local Recent Star Formation
V. Buat, T. T. Takeuchi, J. Iglesias-Paramo +23
We select far-infrared (FIR-60 microns) and far-ultraviolet (FUV-1530 A) samples of nearby galaxies in order to discuss the biases encountered by monochromatic surveys (FIR or FUV)…
Multi Object Spectrograph of the Fireball-II Balloon Experiment
G Lemaitre, R. Grange, S Quiret +3
Fireball-II is a NASA/CNES balloon-borne telescope and MOS to study faint diffuse emissions of galaxies in the space ultraviolet. The MOS is based on two identical reflective Schmi…
GALEX observations of the UV surface brightness and color profiles of the Local Group elliptical galaxy M32 (NGC221)
A. Gil de Paz, B. F. Madore, Y. -J. Sohn +22
M32, the compact elliptical-galaxy companion to the Andromeda spiral galaxy has been imaged by the Galaxy Evolution Explorer (GALEX) in two ultraviolet bands, centered at ~1500 (FU…
The radial extinction profiles of late-type galaxies
S. Boissier, A. Boselli, V. Buat +2
We have used UV (FOCA) and FIR (IRAS) images of six nearby late type galaxies to study the radial variation of the UV extinction (deduced from the FIR/UV ratio). We compare the UV…