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The Star Formation Efficiency in Nearby Galaxies: Measuring Where Gas Forms Stars Effectively
Adam K. Leroy, Fabian Walter, Elias Brinks +4
We measure the star formation efficiency (SFE), the star formation rate per unit gas, in 23 nearby galaxies and compare it to expectations from proposed star formation laws and thr…
The Star Formation Law in Nearby Galaxies on Sub-Kpc Scales
Frank Bigiel, Adam Leroy, Fabian Walter +4
(Abridged) We present a comprehensive analysis of the relationship between star formation rate surface density (SFR SD) and gas surface density (gas SD) at sub-kpc resolution in a…
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…
Lyman alpha emitting galaxies at 0.2 < z < 0.35 from GALEX spectroscopy
Jean-Michel Deharveng, Todd Small, Tom A. Barlow +19
The GALEX (Galaxy Evolution Explorer) spectroscopic survey mode, with a resolution of about 8 A in the FUV (1350 - 1750 A) and about 20 A in the NUV (1950 - 2750 A) is used for a s…
Extended UV (XUV) Emission in Nearby Galaxy Disks
A. Gil de Paz, D. A. Thilker, L. Bianchi +19
We summarize the main properties of the extended UV (XUV) emission found in roughly 30% of the nearby spiral galaxies observed by the GALEX satellite. Two different classes of XUV…
Ultraviolet, Optical, and Infrared Constraints on Models of Stellar Populations and Dust Attenuation
Benjamin D. Johnson, David Schiminovich, Mark Seibert +19
The color of galaxies is a fundamental property, easily measured, that constrains models of galaxies and their evolution. Dust attenuation and star formation history (SFH) are the…
The UV-Optical Color Magnitude Diagram II: Physical Properties and Morphological Evolution On and Off of a Star-Forming Sequence
David Schiminovich, Ted K. Wyder, D. Christopher Martin +23
We use the UV-optical color magnitude diagram in combination with spectroscopic and photometric measurements derived from the SDSS spectroscopic sample to measure the distribution…
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…
The Young and the Dustless: Interpreting Radio Observations of UltraViolet Luminous Galaxies
Antara R. Basu-Zych, David Schiminovich, Benjamin D. Johnson +23
Ultraviolet Luminous Galaxies (UVLGs) have been identified as intensely star-forming, nearby galaxies. A subset of these, the supercompact UVLGs, are believed to be local analogs o…
Nitrogen Production in Starburst Galaxies Detected by GALEX
Ryan P. Mallery, Lisa Kewley, R. Michael Rich +22
We investigate the production of nitrogen in star forming galaxies with ultraviolet (UV) radiation detected by the Galaxy Evolution Explorer Satellite (GALEX). We use a sample of 8…
Radial variation of attenuation and star formation in the largest late-type disks observed with GALEX
Samuel Boissier, Armando Gil de Paz, Alessandro Boselli +24
For a sample of 43 nearby, late-type galaxies, we have investigated the radial variation of both the current star formation rate and the dust-induced UV light attenuation. To do th…
The fate of spiral galaxies in clusters: the star formation history of the anemic Virgo cluster galaxy NGC 4569
A. Boselli, S. Boissier, L. Cortese +5
We present a new method for studying the star formation history of late-type, cluster galaxies undergoing gas starvation or a ram-pressure stripping event by combining bidimensiona…
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…
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 (Å, hereafter NUV) and IRAS ($λ= 6…
SN 2005bf: A Possible Transition Event Between Type Ib/c Supernovae and Gamma Ray Bursts
Gaston Folatelli, Carlos Contreras, M. M. Phillips +22
We present u'g'r'i'BV photometry and optical spectroscopy of the Type Ib/Ic SN 2005bf covering the first ~100 days following discovery. The u'g'BV light curves displayed a double-p…
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…
The Properties of Ultraviolet-Luminous Galaxies at the Current Epoch
Timothy M. Heckman, Charles G. Hoopes, Mark Seibert +23
We have used the first matched set of GALEX and SDSS data to investigate the properties of a sample of 74 nearby galaxies with far-ultraviolet luminosities chosen to overlap the lu…
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…
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…
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…
The Galaxy Evolution Explorer: A Space Ultraviolet Survey Mission
D. Christopher Martin, James Fanson, David Schiminovich +21
We give an overview of the Galaxy Evolution Explorer (GALEX), a NASA Explorer Mission launched on April 28, 2003. GALEX is performing the first space UV sky-survey, including imagi…
Far Infrared mapping of NGC 891
Cristina C. Popescu, Richard. J. Tuffs, Nikolaos D. Kylafis +1
We present deep maps of dust emission from the edge-on spiral galaxy NGC 891, obtained with the ISOPHOT instrument on board the Infrared Space Observatory in broad band filters wit…
The Central Mass Distribution in Dwarf and Low Surface Brightness Galaxies
R. A. Swaters, B. F. Madore, F. C. van den Bosch +1
We present Halpha rotation curves for a sample of 15 dwarf and LSB galaxies. From these, we derive limits on the slopes of the central mass distributions. Assuming the density dist…
Comparing Galaxy Morphology at Ultraviolet and Optical Wavelengths
L. E. Kuchinski, W. L. Freedman, Barry F. Madore +11
We have undertaken an imaging survey of 34 nearby galaxies in far-ultraviolet (FUV, ~1500A) and optical (UBVRI) passbands to characterize galaxy morphology as a function of wavelen…