| Texto completo | |
| Autor(es): Mostrar menos - |
Lopez-Sanjuan, C.
;
Diaz-Garcia, L. A.
;
Cenarro, A. J.
;
Fernandez-Soto, A.
;
Viironen, K.
;
Molino, A.
;
Benitez, N.
;
Cristobal-Hornillos, D.
;
Moles, M.
;
Varela, J.
;
Arnalte-Mur, P.
;
Ascaso, B.
;
Castander, F. J.
;
Cervino, M.
;
Delgado, R. M. Gonzalez
;
Husillos, C.
;
Marquez, I.
;
Masegosa, J.
;
Del Olmo, A.
;
Povic, M.
;
Perea, J.
Número total de Autores: 21
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ASTRONOMY & ASTROPHYSICS; v. 622, p. 9-pg., 2019-01-25. |
| Resumo | |
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. (AU) | |
| Processo FAPESP: | 14/11806-9 - Desafios para a nova geração de mapeamentos fotométricos de grande campo como o J-PAS |
| Beneficiário: | Alberto Molino Benito |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |