Publications (34)
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…
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…
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 Spectroscopy of SN 2005ay suggests a UV spectral uniformity among type II-P supernovae
A. Gal-Yam, F. Bufano, T. Barlow +24
We present the first results from our GALEX program designed to obtain ultraviolet (UV) spectroscopy of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the ne…
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…
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…
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…
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…
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…
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…
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…
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 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 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…
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…
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…
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…
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…
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 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 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…
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…
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)…
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 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…
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…