Publication: Spatially resolved star formation main sequence of galaxies in the CALIFA survey
Loading...
Official URL
Full text at PDC
Publication Date
2016-04-20
Authors
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Citations
Exportar
Abstract
The "main sequence of galaxies"—defined in terms of the total star formation rate ψ versus the total stellar mass M *—is a well-studied tight relation that has been observed at several wavelengths and at different redshifts. All earlier studies have derived this relation from integrated properties of galaxies. We recover the same relation from an analysis of spatially resolved properties, with integral field spectroscopic (IFS) observations of 306 galaxies from the CALIFA survey. We consider the SFR surface density in units of log(M_⊙ yr^−1 Kpc^−2) and the stellar mass surface density in units of log(M_⊙ Kpc^−2) in individual spaxels that probe spatial scales of 0.5–1.5 Kpc. This local relation exhibits a high degree of correlation with small scatter (σ = 0.23 dex), irrespective of the dominant ionization source of the host galaxy or its integrated stellar mass. We highlight (i) the integrated star formation main sequence formed by galaxies whose dominant ionization process is related to star formation, for which we find a slope of 0.81 ± 0.02; (ii) for the spatially resolved relation obtained with the spaxel analysis, we find a slope of 0.72 ± 0.04; and (iii) for the integrated main sequence, we also identified a sequence formed by galaxies that are dominated by an old stellar population, which we have called the retired galaxies sequence.
Description
© 2016 The American Astronomical Society.
Artículo firmado por 20 autores. We acknowledge the referee, E. Pérez, and R. Cid Fernandes for their comments. Financial support: M.C.D. and S.F.S.: DGAPA-UNAM funding; CONACyT-180125 and PAPIIT IA-100815 projects. Z.S.: EU Marie Curie Career Integration Grant "SteMaGE" PCIG12-GA-2012-326466. Y.A.: RyC-2011-09461 and AYA2013-47742-C4-3-P projects from the Spanish MINECO and the SELGIFS programme, funded by the EU (FP7-PEOPLE-2013-IRSES-612701). C.J.W.: Marie Curie Career Integration Grant 303912. R.M.G.D.: AyA2014-57490-P and J.A. P12-FQM2828 grants. J.F.B.: AYA2013-48226-C3-1-P from the Spanish MINECO grant. L.G.: Millennium Science Initiative through grant IC120009, and by CONICYT through FONDECYT grant 3140566.
UCM subjects
Unesco subjects
Keywords
Citation
Baldwin, J. A., Phillips, M. M., & Terlevich, R. 1981, PASP, 93, 5
Brinchmann, J., Charlot, S., White, et al. 2004, MNRAS, 351, 1151
Cardelli, J. A., Clayton, G. C., & Mathis, J. S. 1989, ApJ, 345, 245
Casado, J., Ascasibar, Y., Gavilán, M., et al. 2015, MNRAS, 451, 888
Catalán Torrecilla, C., Gil de Paz, A., Castillo Morales, A., et al. 2015, A&A, 584, A87
Cid Fernandes, R., González Delgado, R. M., García Benito, R., et al. 2014, A&A, 561, A130
Cid Fernandes, R., Pérez, E., García Benito, R., et al. 2013, A&A, 557, A86
Cid Fernandes, R., Stasińska, G., Mateus, A., & Vale Asari, N. 2011, MNRAS, 413, 1687
Daddi, E., Dickinson, M., Morrison, G., et al. 2007, ApJ, 670, 156
Davé, R., Oppenheimer, B. D., & Finlator, K. 2011, MNRAS, 415, 11
Elbaz, D., Daddi, E., Le Borgne, D., et al. 2007, A&A, 468, 33
García Benito, R., Zibetti, S., Sánchez, S. F., et al. 2015, A&A, 576, A135
González Delgado, R. M., & Pérez, E. 1997, ApJS, 108, 199
González Delgado, R. M., Cid Fernandes, R., García Benito, R., et al. 2014, ApJL, 791, L16
González Delgado, R. M., García Benito, R., Pérez, E., et al. 2015, A&A, 581, A103
Katsianis, A., Tescari, E., & Wyithe, J. S. B. 2015, arXiv:1508.01615
Kauffmann, G., Heckman, T. M., White, S. D. M., et al. 2003, MNRAS, 341, 54
Kelz, A., Verheijen, M. A. W., Roth, M. M., et al. 2006, PASP, 118, 129
Kennicutt, R. C., Jr. 1998, ARA&A, 36, 189
Kewley, L. J., Dopita, M. A., Sutherland, R. S., et al. 2001, ApJ, 556, 121
Peng, Y.-j., Lilly, S. J., Kovač, K., et al. 2010, ApJ, 721, 193
Pérez, E., Cid Fernandes, R., González Delgado, R. M., et al. 2013, ApJL, 764, L1
Renzini, A., & Peng, Y.-J. 2015, ApJL, 801, L29
Roth, M. M., Kelz, A., Fechner, T., et al. 2005, PASP, 117, 620
Salim, S., Rich, R. M., Charlot, S., et al. 2007, ApJS, 173, 267
Sánchez, S. F., Kennicutt, R. C., Gil de Paz, A., et al. 2012, A&A, 538, AA8
Sánchez, S. F., Pérez, E., Sánchez Blázquez, P., et al. 2015, RMxAA, in press (arXiv:1509.08552)
Sánchez, S. F., Pérez, E., Sánchez Blázquez, P., et al. 2016, RMxAA, in press (arXiv:1602.01830)
Sánchez, S. F., Rosales Ortega, F. F., Jungwiert, B., et al. 2013, A&A, 554, A58
Sánchez, S. F., Rosales Ortega, F. F., Iglesias Páramo, J., et al. 2014, A&A, 563, A49
Sparre, M., Hayward, C. C., Springel, V., et al. 2015, MNRAS, 447, 3548
Speagle, J. S., Steinhardt, C. L., Capak, P. L., & Silverman, J. D. 2014, ApJS, 214, 15
Torrey, P., Vogelsberger, M., Genel, S., et al. 2014, MNRAS, 438, 1985
Walcher, C. J., Wisotzki, L., Bekeraité, S., et al. 2014, A&A, 537, A1
Zahid, H. J., Dima, G. I., Kewley, L. J., et al. 2012, ApJ, 757, 54