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Related papers: UV bright red-sequence galaxies: a comparative stu…

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We present the broad-band UV through mid-infrared spectral energy distributions (SEDs) of a sample of 72 spectroscopically-confirmed star-forming galaxies at z=2.30+/-0.3. Located in a 72 arcmin-squared field centered on the bright…

The UV properties of old stellar populations have been subject of intense scrutiny from the late sixties, when the UV-upturn in early type galaxies was first discovered. Because of their proximity and relative simplicity, Galactic globular…

Solar and Stellar Astrophysics · Physics 2015-06-18 E. Dalessandro

Deep observations are revealing a growing number of young galaxies in the first billion year of cosmic time. Compared to typical galaxies at later times, they show more extreme emission-line properties, higher star formation rates, lower…

Galactic outflows provide important feedback effects to regulate the evolution of host galaxies. Two primary diagnostics of outflows are broad and/or blueshifted emission and absorption lines. Even though well-established methods exist to…

Many recent estimates of the star formation rate density at high redshift rely on rest-frame ultraviolet (UV) data. These are highly sensitive to dust absorption. Applying a correlation between the far-infrared (FIR) to UV flux ratio and UV…

Using GALFORM, a semi-analytical model of galaxy formation in the Lambda cold dark matter cosmology, we study the rest-frame ultraviolet (UV) colours of Lyman-break galaxies (LBGs) in the redshift range 2.5 < z < 10. As the impact of dust…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 V. Gonzalez-Perez , C. G. Lacey , C. M. Baugh , C. S. Frenk , S. M. Wilkins

By combining optical and near-IR observations from the Hubble Space Telescope with NIR photometry from the Spitzer Space Telescope it is possible to measure the rest-frame UV-optical colours of galaxies at z=4-8. The UV-optical spectral…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-17 Stephen M. Wilkins , William Coulton , Joseph Caruana , Rupert Croft , Tiziana Di Matteo , Nishikanta Khandai , Yu Feng , Andrew Bunker , Holly Elbert

We present further spectroscopic observations for a sample of galaxies selected in the vacuum ultraviolet (UV) at 2000 \AA from the FOCA balloon-borne imaging camera of Milliard et al. (1992). This work represents an extension of the…

Astrophysics · Physics 2008-11-26 M. Sullivan , M. A. Treyer , R. S. Ellis , T. J. Bridges , B. Milliard , J. Donas

Using a phenomenological approach, we self-consistently model the redshift evolution of the ultraviolet (UV) and infrared (IR) luminosity functions across cosmic time, as well as a range of observed IR properties of UV-selected galaxy…

Astrophysics of Galaxies · Physics 2015-06-19 E. Bernhard , M. Béthermin , M. Sargent , V. Buat , J. R. Mullaney , M. Pannella , S. Heinis , E. Daddi

The discovery of an excess of light in the far-ultraviolet (UV) in 1969 in elliptical galaxies was a major surprise. While it is now clear that this UV excess (UV-upturn) is probably caused by an old population of helium-burning stars. Han…

Astrophysics · Physics 2009-11-13 Z. Han , Ph. Podsiadlowski , A. E. Lynas-Gray , K. Schawinski

The UV upturn in giant elliptical galaxies (gEs) implies significant corrections to the model-predicted optical colors of distant galaxies. However, since the origin of the UV upturn is still not clear, observers often use models that may…

Astrophysics · Physics 2009-10-30 Sukyoung Yi

We use the Hern\'andez-P\'erez $\&$ Bruzual (2013) HB13 stellar population synthesis models to study the r\^ole of interacting binary pairs as progenitors of EHB stars. We assemble a sample of 3417 Early Type Galaxies observed both in the…

Astrophysics of Galaxies · Physics 2015-06-22 Fabiola Hernández-Pérez , Gustavo Bruzual

We present a robust measurement and analysis of the rest-frame ultraviolet (UV) luminosity function at z=4-8. We use deep Hubble Space Telescope imaging over the CANDELS/GOODS fields, the Hubble Ultra Deep Field and the Year 1 Hubble…

Using the Subaru very deep K'-band imaging and HST WFPC2/NICMOS archival data of the Hubble Deep Field North, we investigate the evolution of the stellar mass, color, morphology of galaxies to z ~ 3. We mainly examine the rest-frame U-V…

Astrophysics · Physics 2014-10-13 Masaru Kajisawa , Toru Yamada

We are exploring galaxy evolution in low density environments exploiting smooth particle hydrodynamic simulations including chemo-photometric implementation. From a large grid of simulations of galaxy encounters and mergers starting from…

Astrophysics of Galaxies · Physics 2020-01-08 Paola Mazzei , Roberto Rampazzo , Antonietta Marino , Ginevra Trinchieri , Michela Uslenghi , Anna Wolter

In this paper we briefly review three topics that have motivated our (and others') investigations in recent years within the context of evolutionary population synthesis techniques. These are: The origin of the FUV up-turn in elliptical…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Miguel Chavez , Emanuele Bertone

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 luminosity range of typical high-z Lyman Break Galaxies…

The connection between AGB evolution of stellar populations and infrared vs. ultraviolet properties of the parent galaxies is reviewed relying on the updated lookout provided by population-synthesis theory. In particular, planetary-nebula…

Astrophysics · Physics 2007-05-23 Alberto Buzzoni

The power-law slope of the rest-UV continuum ($f_{\lambda}\propto\lambda^{\beta}$) is a key metric of early star forming galaxies, providing one of our only windows into the stellar populations and physical conditions of $z>10$ galaxies.…