The UV-Optical Galaxy Color-Magnitude Diagram. I. Basic Properties

By T. Wyder, D. C. Martin, David Schiminovich, M. Seibert, Tamás Budavári, M. Treyer, T. Barlow, K. Forster, P. Friedman, P. Morrissey and 20 more. 2007

346 citations recorded by the source corpus.

We have analyzed the bivariate distribution of galaxies as a function of ultraviolet-optical colors and absolute magnitudes in the local universe. The sample consists of galaxies with redshifts and optical photometry from the Sloan Digital Sky Survey (SDSS) main galaxy sample matched with detections in the near-ultraviolet (NUV) and far-ultraviolet (FUV) bands in the Medium Imaging Survey being carried out by the Galaxy Evolution Explorer (GALEX) satellite. In the (NUV − r)0.1 versus Mr,0.1 galaxy color-magnitude diagram, the galaxies separate into two well-defined blue and red sequences. The (NUV − r)0.1 color distribution at each Mr,0.1 is not well fit by the sum of two Gaussians due to an excess of galaxies in between the two sequences. The peaks of both sequences become redder with increasing luminosity, with a distinct blue peak visible up to Mr,0.1 ∼ − 23. The r0.1-band luminosity functions vary systematically with color, with the faint-end slope and characteristic luminosity gradually increasing with color. After correcting for attenuation due to dust, we find that approximately one-quarter of the color variation along the blue sequence is due to dust, with the remainder due to star formation history and metallicity. Finally, we present the distribution of galaxies as a function of specific star formation rate and stellar mass. The specific star formation rates imply that galaxies along the blue sequence progress from low-mass galaxies with star formation rates that increase somewhat with time to more massive galaxies with a more or less constant star formation rate. Above a stellar mass of ~1010.5 M☉, galaxies with low ratios of current to past averaged star formation rate begin to dominate.

Subfields: Astronomy and Astrophysics, Computer Vision and Pattern Recognition, Ecology

View Paper: https://www.semanticscholar.org/paper/dc091149eeb1034cd15a53d4b375e7887b0ae5e2

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Citations in the corpus

The SWIRE-VVDS-CFHTLS surveys: stellar mass assembly over the last 10 Gyr. Evidence for a major build up of the red sequence between z = 2 and z = 1 (2007, neutral): “6; right panel) as suggested by recent GALEX results (Salim et al. 2005; Wyder et al. 2007).”
GIANT SPARKS AT COSMOLOGICAL DISTANCES? (2014, methodology): “The extinction was corrected using the Galactic color excess in the direction of the Sparker (Schlegel, Finkbeiner & Davis 1998), a total-to-selective extinction ratio derived from the Cardelli, Clayton & Mathis (1989) extinction law (see §2.3 of Wyder et al. 2007), and assuming RV = 3.08.”
REGULARITY UNDERLYING COMPLEXITY: A REDSHIFT-INDEPENDENT DESCRIPTION OF THE CONTINUOUS VARIATION OF GALAXY-SCALE MOLECULAR GAS PROPERTIES IN THE MASS-STAR FORMATION RATE PLANE (2013, neutral): “Initially observed at low redshift (e.g., Brinchmann et al. 2004, Salim et al. 2007, Wyder et al. 2007), this “star-forming main sequence (MS)” was soon shown to be present out to z∼ 2 (Noeske et al. 2007, Elbaz et al. 2007, Daddi et al. 2007b).”
EXTREMELY INEFFICIENT STAR FORMATION IN THE OUTER DISKS OF NEARBY GALAXIES (2010, methodology): “If we assume that FUV originates from the midplane (and is thus only affected by half the dust along a line-of-sight) and that AFUV /E(B − V ) = 8.24 (Wyder et al. 2007), then AFUV = N(HI) × 7.1 × 10 −22 and the FUV intensity corrected for internal extinction is IFUV,corr = IFUV × 10…”
The WiggleZ Dark Energy Survey: survey design and first data release (2009, positive): “We then apply the following corrections (including zero-point calibration to the AB system) to the NUV and FUV photometry (Wyder et al. 2007): FUV = FUVraw + 18.82 − 8.2 × E(B − V ) + 0.06 × E(B − V )2, (1) NUV = NUVraw + 18.82 − 8.2 × E(B − V ) + 0.67 × E(B − V )2.”
xCOLD GASS: The Complete IRAM 30 m Legacy Survey of Molecular Gas for Galaxy Evolution Studies (2017, methodology): “NUV-r color: Calculated from resolutionmatched SDSS and GALEX photometry (see Wang et al. 2010), and corrected for Galactic extinction using the prescription of Wyder et al. (2007).”
Galaxy Alignments: Observations and Impact on Cosmology (2015, background): “The primary uncertainty in the application of these upper limits to future surveys is that the sample does not correspond to the entire blue cloud (Kauffmann et al. 2003; Wyder et al. 2007), but rather to a specific subset of it that appears to consist of morphologically disturbed starburst galaxies”
The green valley is a red herring: Galaxy Zoo reveals two evolutionary pathways towards quenching of star formation in early-and late-type galaxies (2014, background): “…represent the transition population between the blue cloud of star-forming galaxies and the red sequence of quenched, passively evolving galaxies (e.g. Bell et al. 2004; Faber et al. 2007; Martin et al. 2007; Schiminovich et al. 2007; Wyder et al. 2007; Mendez et al. 2011; Gonçalves et al. 2012).”
The UV-Optical Galaxy Color-Magnitude Diagram. III. Constraints on Evolution from the Blue to the Red Sequence (2007, neutral): “As shown by Wyder et al. (2007) the Hess function displays a well-defined blue sequence and red sequence.”
PRIMUS: CONSTRAINTS ON STAR FORMATION QUENCHING AND GALAXY MERGING, AND THE EVOLUTION OF THE STELLAR MASS FUNCTION FROM z = 0–1 (2013, background): “…MD 21218 9 Canada-France-Hawaii Telescope Corporation, 65-1238 Mamalahoa Hwy, Kamuela, HI 96743 10 Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, 13388, Marseille, France 11 Alfred P. Sloan Foundation Fellow Baldry et al. 2004; Wyder et al. 2007).”
Illuminating Low Surface Brightness Galaxies with the Hyper Suprime-Cam Survey (2017, methodology): “We estimate the Galactic reddening E(B − V ) using the maps of Schlegel et al. (1998) and the (Cardelli et al. 1989) extinction law with RV = AV /E(B − V ) = 3.1 and AFUV = 8.24E(B − V ) (Wyder et al. 2007); we do not account for internal dust extinction.”
The UV-Optical Color Magnitude Diagram. II. Physical Properties and Morphological Evolution On and Off of a Star-forming Sequence (2007, methodology): “We accomplish this by expanding on the analysis of the UV-color magnitude diagram (Wyder et al. 2007, hereafter Paper I) using observations of 26241 galaxies from the Galaxy Evolution Explorer (GALEX) Medium Imaging Survey (MIS), combined with the Sloan Digital Sky Survey (SDSS) primary…”
The GALEX Arecibo SDSS Survey I: gas fraction scaling relations of massive galaxies and first data release (2009, methodology): “The well-known separation between blue cloud and c© 0000 RAS, MNRAS 000, 000–000 red sequence galaxies, best appreciated when UV-to-optical colours are used (e.g., Wyder et al. 2007), is clearly seen in panel (d).”
SDSS IV MaNGA – spatially resolved diagnostic diagrams: a proof that many galaxies are LIERs (2016, background): “These two sequences are clearly separated not only in their integrated optical and UV colours (Wyder et al. 2007), but also in their stellar populations (e.g Kauffmann et al. 2003a), cold gas content and ionised gas properties (Kewley et al. 2006; Saintonge et al. 2011).”
COLD GASS, an IRAM legacy survey of molecular gas in massive galaxies – I. Relations between H2, H i, stellar content and structural properties (2011, methodology): “The derived NUV − r colours are corrected for Galactic extinction using the prescription of Wyder et al. (2007) (see also Catinella et al. 2010).”
The dark side of galaxy colour (2013, background): “Additionally, there is a clear bimodality in the distribution of galaxy color and brightness, with distinct red and blue sequences in color-magnitude space, along with a minority ’green valley’ population (Blanton et al. 2003; Baldry et al. 2004; Blanton et al. 2005; Wyder et al. 2007).”
THE ARECIBO LEGACY FAST ALFA SURVEY: THE GALAXY POPULATION DETECTED BY ALFALFA (2012, methodology): “Bluewards of this division, the two colors are well correlated with a slope of δ(u − r)/δ(NUV − r) ∼ 0.6, which is comparable to what was found by Wyder et al. (2007),δ(u − r)/δ(NUV − r) ∼ 0.5.”
GALAXY CLUSTERING IN THE COMPLETED SDSS REDSHIFT SURVEY: THE DEPENDENCE ON COLOR AND LUMINOSITY (2010, background): “We also define an intermediate population of “green” galaxies, located near the minimum of the observed color bimodality along the red/blue dividing line, associated with the so-called “green valley” galaxies (e.g., Wyder et al. 2007; Loh et al. 2010).”