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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
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Lopez-Sanjuan, C. [1] ; Diaz-Garcia, L. A. [1] ; Cenarro, A. J. [1] ; Fernandez-Soto, A. [2, 3] ; Viironen, K. [1] ; Molino, A. [4, 5] ; Benitez, N. [5] ; Cristobal-Hornillos, D. [1] ; Moles, M. [1] ; Varela, J. [1] ; Arnalte-Mur, P. [6, 7] ; Ascaso, B. [8] ; Castander, F. J. [9, 10] ; Cervino, M. [5, 11, 12] ; Delgado, R. M. Gonzalez [5] ; Husillos, C. [5] ; Marquez, I. [5] ; Masegosa, J. [5] ; Del Olmo, A. [5] ; Povic, M. [5, 13] ; Perea, J. [5]
Total Authors: 21
Affiliation:
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[1] CSIC, Ctr Estudios Fis Cosmos Aragon, Unidad Asociada, IAA, Plaza San Juan 1, Teruel 44001 - Spain
[2] CSIC, Inst Fis Cantabria, UC, Santander 39005 - Spain
[3] IFCA, Unidad Asociada Observ Astron, UV, Paterna 46980 - Spain
[4] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Rua Matao 1226, BR-05508090 Sao Paulo - Brazil
[5] CSIC, IAA, Glorieta Astron S-N, Granada 18008 - Spain
[6] Univ Valencia, Dept Astron & Astrofis, E-46100 Burjassot - Spain
[7] Univ Valencia, Observ Astron, C Catedratico Jose Beltran 2, Paterna 46980 - Spain
[8] Univ Paris Diderot, APC, CNRS IN2P3, CEA Lrfu, Observ Paris, Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13 - France
[9] IEEC, Barcelona 08193 - Spain
[10] CSIC, Inst Space Sci, ICE, Campus UAB, Carrer Can Magrans, S-N, Barcelona 08193 - Spain
[11] CSIC, Ctr Astrobiol, INTA, Madrid 28850 - Spain
[12] Inst Astrofis Canarias, Via Lactea S-N, Tenerife 38200 - Spain
[13] ESSTI, EORC, Astron & Astrophys Res Div, POB 33679, Addis Ababa - Ethiopia
Total Affiliations: 13
Document type: Journal article
Source: Astronomy & Astrophysics; v. 622, JAN 25 2019.
Web of Science Citations: 3
Abstract

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)

FAPESP's process: 14/11806-9 - Challenges for the new generation of wide-field photometric redshift surveys like J-PAS
Grantee:Alberto Molino Benito
Support type: Scholarships in Brazil - Post-Doctorate