de Paz, Armando Gil and Boissier, Samuel and Madore, Barry F. and Seibert, Mark and Joe, Young H. and Boselli, Alessandro and Wyder, Ted K. and Thilker, David and Bianchi, Luciana and Rey, Soo-Chang and Rich, R. Michael and Barlow, Tom A. and Conrow, Tim and Forster, Karl and Friedman, Peter G. and Martin, D. Christopher and Morrissey, Patrick and Neff, Susan G. and Schiminovich, David and Small, Todd and Donas, José and Heckman, Timothy M. and Lee, Young-Wook and Milliard, Bruno and Szalay, Alex S. and Yi, Sukyoung (2007) The GALEX Ultraviolet Atlas of Nearby Galaxies. Astrophysical Journal Supplement Series, 173 (2). pp. 185-255. ISSN 0067-0049 http://resolver.caltech.edu/CaltechAUTHORS:20100212-095356894
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We present images, integrated photometry, and surface-brightness and color profiles for a total of 1034 nearby galaxies recently observed by the Galaxy Evolution Explorer (GALEX) satellite in its far-ultraviolet (FUV; λ_(eff) = 1516 Å) and near-ultraviolet (NUV; λ_(eff) = 2267 Å) bands. Our catalog of objects is derived primarily from the GALEX Nearby Galaxies Survey (NGS) supplemented by galaxies larger than 1' in diameter serendipitously found in these fields and in other GALEX exposures of similar of greater depth. The sample analyzed here adequately describes the distribution and full range of properties (luminosity, color, star formation rate [SFR]) of galaxies in the local universe. From the surface brightness profiles obtained we have computed asymptotic magnitudes, colors, and luminosities, along with the concentration indices C31 and C42. We have also morphologically classified the UV surface brightness profiles according to their shape. This data set has been complemented with archival optical, near-infrared, and far-infrared fluxes and colors. We find that the integrated (FUV − K) color provides robust discrimination between elliptical and spiral/irregular galaxies and also among spiral galaxies of different subtypes. Elliptical galaxies with brighter K-band luminosities (i.e., more massive) are redder in (NUV − K) color but bluer in (FUV − NUV) (a color sensitive to the presence of a strong UV upturn) than less massive ellipticals. In the case of the spiral/irregular galaxies our analysis shows the presence of a relatively tight correlation between the (FUV − NUV) color (or, equivalently, the slope of the UV spectrum, β) and the total infrared-to-UV ratio. The correlation found between (FUV − NUV) color and K-band luminosity (with lower luminosity objects being bluer than more luminous ones) can be explained as due to an increase in the dust content with galaxy luminosity. The images in this Atlas along with the profiles and integrated properties are publicly available through a dedicated Web page.
|Additional Information:||© 2007 The American Astronomical Society Received 2006 January 6; accepted 2006 March 15. GALEX (Galaxy Evolution Explorer) is a NASA Small Explorer, launched in 2003 April. We gratefully acknowledge NASA’s support for construction, operation, and science analysis for the GALEX mission, developed in cooperation with the Centre National d’Etudes Spatiales of France and the Korean Ministry of Science and Technology. A. G. d. P. is partially financed by the MAGPOP EU Marie Curie Research Training Network and the Spanish Programa Nacional de Astronomı´a y Astrofı´sica under grant AYA2003-01676. We thank Cren Frayer and Olga Pevunova for preparing the online version of the Atlas. We are also thankful to the referee for his/her valuable comments which helped to improve the paper. Facilities: GALEX.|
|Group:||Space Radiation Laboratory|
|Subject Keywords:||atlases; galaxies : evolution; galaxies : fundamental parameters; galaxies : photometry; ultraviolet : galaxies|
|Official Citation:||The GALEX Ultraviolet Atlas of Nearby Galaxies Armando Gil de Paz, Samuel Boissier, Barry F. Madore, Mark Seibert, Young H. Joe, Alessandro Boselli, Ted K. Wyder, David Thilker, Luciana Bianchi, Soo-Chang Rey, R. Michael Rich, Tom A. Barlow, Tim Conrow, Karl Forster, Peter G. Friedman, D. Christopher Martin, Patrick Morrissey, Susan G. Neff, David Schiminovich, Todd Small, José Donas, Timothy M. Heckman, Young-Wook Lee, Bruno Milliard, Alex S. Szalay, and Sukyoung Yi 2007 ApJS 173 185-255 doi: 10.1086/516636|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||16 Feb 2010 19:33|
|Last Modified:||04 Mar 2013 18:06|
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