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Title: UV bright red-sequence galaxies: how do UV upturn systems evolve in redshift and stellar mass?

Abstract

ABSTRACT The so-called ultraviolet (UV) upturn of elliptical galaxies is a phenomenon characterized by the up-rise of their fluxes in bluer wavelengths, typically in the 1200–2500 Å range. This work aims at estimating the rate of occurrence of the UV upturn over the entire red-sequence population of galaxies that show significant UV emission. This assessment is made considering it as function of three parameters: redshift, stellar mass, and – what may seem counter-intuitive at first – emission-line classification. We built a multiwavelength spectrophotometric catalogue from the Galaxy Mass Assembly survey, together with aperture-matched data from Galaxy Evolution Explorer Medium-Depth Imaging Survey (MIS) and Sloan Digital Sky Survey, covering the redshift range between 0.06 and 0.40. From this sample, we analyse the UV emission among UV bright galaxies, by selecting those that occupy the red-sequence locus in the (NUV− r) × (FUV−NUV) chart; then, we stratify the sample by their emission-line classes. To that end, we make use of emission-line diagnostic diagrams, focusing the analysis in retired/passive lineless galaxies. Then, a Bayesian logistic model was built to simultaneously deal with the effects of all galaxy properties (including emission-line classification or lack thereof). The main results show that retired/passive systems host an up-rise inmore » the fraction of UV upturn for redshifts between 0.06 and 0.25, followed by an in-fall up to 0.35. Additionally, we show that the fraction of UV upturn hosts rises with increasing stellar mass.« less

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]
  1. Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, R. do Matão 1226, 05508-090, São Paulo, Brazil, Departamento de Física Teórica, Universidad Autónoma de Madrid, E-28049, Madrid, Spain
  2. Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, R. do Matão 1226, 05508-090, São Paulo, Brazil
  3. Department of Physics & Astronomy, University of North Carolina at Chapel Hill, NC 27599, USA
  4. Observatório do Valongo, Universidade Federal of Rio de Janeiro, Ladeira Pedro Antônio 43, Rio de Janeiro, RJ 20080-090, Brazil
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1592787
Grant/Contract Number:  
FG02-97ER41041; FG02-97ER41033
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 492 Journal Issue: 2; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Dantas, M. L. L., Coelho, P. R. T., de Souza, R. S., and Gonçalves, T. S. UV bright red-sequence galaxies: how do UV upturn systems evolve in redshift and stellar mass?. United Kingdom: N. p., 2019. Web. doi:10.1093/mnras/stz3609.
Dantas, M. L. L., Coelho, P. R. T., de Souza, R. S., & Gonçalves, T. S. UV bright red-sequence galaxies: how do UV upturn systems evolve in redshift and stellar mass?. United Kingdom. doi:10.1093/mnras/stz3609.
Dantas, M. L. L., Coelho, P. R. T., de Souza, R. S., and Gonçalves, T. S. Tue . "UV bright red-sequence galaxies: how do UV upturn systems evolve in redshift and stellar mass?". United Kingdom. doi:10.1093/mnras/stz3609.
@article{osti_1592787,
title = {UV bright red-sequence galaxies: how do UV upturn systems evolve in redshift and stellar mass?},
author = {Dantas, M. L. L. and Coelho, P. R. T. and de Souza, R. S. and Gonçalves, T. S.},
abstractNote = {ABSTRACT The so-called ultraviolet (UV) upturn of elliptical galaxies is a phenomenon characterized by the up-rise of their fluxes in bluer wavelengths, typically in the 1200–2500 Å range. This work aims at estimating the rate of occurrence of the UV upturn over the entire red-sequence population of galaxies that show significant UV emission. This assessment is made considering it as function of three parameters: redshift, stellar mass, and – what may seem counter-intuitive at first – emission-line classification. We built a multiwavelength spectrophotometric catalogue from the Galaxy Mass Assembly survey, together with aperture-matched data from Galaxy Evolution Explorer Medium-Depth Imaging Survey (MIS) and Sloan Digital Sky Survey, covering the redshift range between 0.06 and 0.40. From this sample, we analyse the UV emission among UV bright galaxies, by selecting those that occupy the red-sequence locus in the (NUV− r) × (FUV−NUV) chart; then, we stratify the sample by their emission-line classes. To that end, we make use of emission-line diagnostic diagrams, focusing the analysis in retired/passive lineless galaxies. Then, a Bayesian logistic model was built to simultaneously deal with the effects of all galaxy properties (including emission-line classification or lack thereof). The main results show that retired/passive systems host an up-rise in the fraction of UV upturn for redshifts between 0.06 and 0.25, followed by an in-fall up to 0.35. Additionally, we show that the fraction of UV upturn hosts rises with increasing stellar mass.},
doi = {10.1093/mnras/stz3609},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 2,
volume = 492,
place = {United Kingdom},
year = {2019},
month = {12}
}

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Horizontal-Branch Stars as Sources of the UV Upturn in Early-Type Galaxies
journal, January 2004


Yonsei Evolutionary Population Synthesis (YEPS). II. Spectro-photometric Evolution of Helium-enhanced Stellar Populations
journal, June 2017

  • Chung, Chul; Yoon, Suk-Jin; Lee, Young-Wook
  • The Astrophysical Journal, Vol. 842, Issue 2
  • DOI: 10.3847/1538-4357/aa6f19

The rise and fall of the UV upturn: z = 0.3, 0.55, and 0.7
journal, July 2018

  • Ali, S. S.; Bremer, M. N.; Phillipps, S.
  • Monthly Notices of the Royal Astronomical Society, Vol. 480, Issue 2
  • DOI: 10.1093/mnras/sty1988

The Ultraviolet Upturn in Elliptical Galaxies as an Age Indicator
journal, March 1999

  • Yi, Sukyoung; Lee, Young‐Wook; Woo, Jong‐Hak
  • The Astrophysical Journal, Vol. 513, Issue 1
  • DOI: 10.1086/306856

DustPedia: the relationships between stars, gas, and dust for galaxies residing in different environments
journal, June 2019


Systematics of the Ultraviolet Rising Flux in a GALEX /SDSS Sample of Early-Type Galaxies
journal, January 2005

  • Rich, R. Michael; Salim, Samir; Brinchmann, Jarle
  • The Astrophysical Journal, Vol. 619, Issue 1
  • DOI: 10.1086/426939

Encounters of disk/halo galaxies
journal, August 1988

  • Barnes, Joshua E.
  • The Astrophysical Journal, Vol. 331
  • DOI: 10.1086/166593

Extragalactic nebulae.
journal, October 1926

  • Hubble, E. P.
  • The Astrophysical Journal, Vol. 64
  • DOI: 10.1086/143018