publication . Article . Research . Preprint . Other literature type . 2018

How to Measure Galaxy Star Formation Histories II:Nonparametric Models

Leja, Joel; Carnall, Adam C.; Johnson, Benjamin D.; Conroy, Charlie; Speagle, Joshua S.;
Open Access English
  • Published: 01 Nov 2018
  • Country: United Kingdom
Abstract
Nonparametric star formation histories (SFHs) have long promised to be the `gold standard' for galaxy spectral energy distribution (SED) modeling as they are flexible enough to describe the full diversity of SFH shapes, whereas parametric models rule out a significant fraction of these shapes {\it a priori}. However, this flexibility is not fully constrained even with high-quality observations, making it critical to choose a well-motivated prior. Here, we use the SED-fitting code \texttt{Prospector} to explore the effect of different nonparametric priors by fitting SFHs to mock UV-IR photometry generated from a diverse set of input SFHs. First, we confirm that n...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Solar and Stellar Astrophysics
free text keywords: astro-ph.GA, Space and Planetary Science, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies
Funded by
NSF| Bringing Galaxy Evolution into Focus by Pushing SED Models to the Limit
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1701487
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
73 references, page 1 of 5

Abramson, L. E., Gladders, M. D., Dressler, A., et al. 2015,

Baldry, I. K., Liske, J., Brown, M. J. I., et al. 2018,

Betancourt, M. 2012, in American Institute of Physics Conference Series, Vol. 1443, American Institute of Physics Conference Series, ed. P. Goyal, A. Gi n, K. H. Knuth, & E. Vrscay, 157{164

Buat, V., Boissier, S., Burgarella, D., et al. 2008, A&A, 483, 107

Byler, N., Dalcanton, J. J., Conroy, C., & Johnson, B. D. 2017, ApJ, 840, 44

Carnall, A. C., McLure, R. J., Dunlop, J. S., & Dave, R. 2018, MNRAS, 480, 4379

Caswell, T. A., Droettboom, M., Hunter, J., et al. 2018, matplotlib/matplotlib v3.0.0, , , doi:10.5281/zenodo.1420605. https://doi.org/10.5281/zenodo.1420605

Chabrier, G. 2003, PASP, 115, 763

Chauke, P., van der Wel, A., Paci ci, C., et al. 2018, ApJ, 861, 13

Choi, J., Conroy, C., Moustakas, J., et al. 2014, ApJ, 792, 95

Cid Fernandes, R., Mateus, A., Sodre, L., Stasinska, G., & Gomes, J. M. 2005, MNRAS, 358, 363

Ciesla, L., Boselli, A., Elbaz, D., et al. 2016, A&A, 585, A43

Conroy, C. 2013, ARA&A, 51, 393

Conroy, C., Graves, G. J., & van Dokkum, P. G. 2014, ApJ, 780, 33

Conroy, C., Gunn, J. E., & White, M. 2009, ApJ, 699, 486

73 references, page 1 of 5
Abstract
Nonparametric star formation histories (SFHs) have long promised to be the `gold standard' for galaxy spectral energy distribution (SED) modeling as they are flexible enough to describe the full diversity of SFH shapes, whereas parametric models rule out a significant fraction of these shapes {\it a priori}. However, this flexibility is not fully constrained even with high-quality observations, making it critical to choose a well-motivated prior. Here, we use the SED-fitting code \texttt{Prospector} to explore the effect of different nonparametric priors by fitting SFHs to mock UV-IR photometry generated from a diverse set of input SFHs. First, we confirm that n...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Solar and Stellar Astrophysics
free text keywords: astro-ph.GA, Space and Planetary Science, Astronomy and Astrophysics, Astrophysics - Astrophysics of Galaxies
Funded by
NSF| Bringing Galaxy Evolution into Focus by Pushing SED Models to the Limit
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1701487
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Astronomical Sciences
73 references, page 1 of 5

Abramson, L. E., Gladders, M. D., Dressler, A., et al. 2015,

Baldry, I. K., Liske, J., Brown, M. J. I., et al. 2018,

Betancourt, M. 2012, in American Institute of Physics Conference Series, Vol. 1443, American Institute of Physics Conference Series, ed. P. Goyal, A. Gi n, K. H. Knuth, & E. Vrscay, 157{164

Buat, V., Boissier, S., Burgarella, D., et al. 2008, A&A, 483, 107

Byler, N., Dalcanton, J. J., Conroy, C., & Johnson, B. D. 2017, ApJ, 840, 44

Carnall, A. C., McLure, R. J., Dunlop, J. S., & Dave, R. 2018, MNRAS, 480, 4379

Caswell, T. A., Droettboom, M., Hunter, J., et al. 2018, matplotlib/matplotlib v3.0.0, , , doi:10.5281/zenodo.1420605. https://doi.org/10.5281/zenodo.1420605

Chabrier, G. 2003, PASP, 115, 763

Chauke, P., van der Wel, A., Paci ci, C., et al. 2018, ApJ, 861, 13

Choi, J., Conroy, C., Moustakas, J., et al. 2014, ApJ, 792, 95

Cid Fernandes, R., Mateus, A., Sodre, L., Stasinska, G., & Gomes, J. M. 2005, MNRAS, 358, 363

Ciesla, L., Boselli, A., Elbaz, D., et al. 2016, A&A, 585, A43

Conroy, C. 2013, ARA&A, 51, 393

Conroy, C., Graves, G. J., & van Dokkum, P. G. 2014, ApJ, 780, 33

Conroy, C., Gunn, J. E., & White, M. 2009, ApJ, 699, 486

73 references, page 1 of 5
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publication . Article . Research . Preprint . Other literature type . 2018

How to Measure Galaxy Star Formation Histories II:Nonparametric Models

Leja, Joel; Carnall, Adam C.; Johnson, Benjamin D.; Conroy, Charlie; Speagle, Joshua S.;