The ALHAMBRA survey: tight dependence of the optical mass-to-light ratio on galaxy colour up to z = 1.5 - Archive ouverte HAL
Article Dans Une Revue Astronomy & Astrophysics - A&A Année : 2019

The ALHAMBRA survey: tight dependence of the optical mass-to-light ratio on galaxy colour up to z = 1.5

C. López-Sanjuan
  • Fonction : Auteur
L.A. Díaz-García
  • Fonction : Auteur
A.J. Cenarro
  • Fonction : Auteur
A. Fernández-Soto
  • Fonction : Auteur
K. Viironen
  • Fonction : Auteur
A. Molino
  • Fonction : Auteur
N. Benítez
  • Fonction : Auteur
D. Cristóbal-Hornillos
  • Fonction : Auteur
M. Moles
  • Fonction : Auteur
J. Varela
  • Fonction : Auteur
P. Arnalte-Mur
  • Fonction : Auteur
B. Ascaso
  • Fonction : Auteur
  • PersonId : 1391751
F.J. Castander
  • Fonction : Auteur
M. Cerviño
  • Fonction : Auteur
R.M. González Delgado
  • Fonction : Auteur
C. Husillos
  • Fonction : Auteur
I. Márquez
  • Fonction : Auteur
J. Masegosa
  • Fonction : Auteur
A.Del Olmo
  • Fonction : Auteur
M. Pović
  • Fonction : Auteur
J. Perea
  • Fonction : Auteur

Résumé

Aims. Our goal is to characterise the dependence of the optical mass-to-light ratio on galaxy colour up to z = 1.5, expanding the redshift range explored in previous work.Methods. From the redshifts, stellar masses, and rest-frame luminosities of the ALHAMBRA multi-filter survey, we derive the mass-to-light ratio versus colour relation for quiescent and for star-forming galaxies. The intrinsic relation and its physical dispersion are derived with a Bayesian inference model.Results. The rest-frame i-band mass-to-light ratio of quiescent and star-forming galaxies presents a tight correlation with the rest-frame (g − i) colour up to z = 1.5. The mass-to-light ratio versus colour relation is linear for quiescent galaxies and quadratic for star-forming galaxies. The intrinsic dispersion in these relations is 0.02 dex for quiescent galaxies and 0.06 dex for star-forming ones. The derived relations do not present a significant redshift evolution and are compatible with previous local results in the literature. Finally, these tight relations also hold for g- and r-band luminosities.Conclusions. The derived mass-to-light ratio versus colour relations in ALHAMBRA can be used to predict the mass-to-light ratio from a rest-frame optical colour up to z = 1.5. These tight correlations do not change with redshift, suggesting that galaxies have evolved along the derived relations during the last 9 Gyr.Key words: galaxies: fundamental parameters / galaxies: statistics / galaxies: stellar content⋆ Based on observations collected at the German-Spanish Astronomical Centre, Calar Alto, jointly operated by the Max-Planck-Institut für Astronomie (MPIA) at Heidelberg and the Instituto de Astrofísica de Andalucía (CSIC).

Dates et versions

hal-02073519 , version 1 (20-03-2019)

Identifiants

Citer

C. López-Sanjuan, L.A. Díaz-García, A.J. Cenarro, A. Fernández-Soto, K. Viironen, et al.. The ALHAMBRA survey: tight dependence of the optical mass-to-light ratio on galaxy colour up to z = 1.5. Astronomy & Astrophysics - A&A, 2019, 622, pp.A51. ⟨10.1051/0004-6361/201833402⟩. ⟨hal-02073519⟩
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