A new library of fully theoretical stellar population models

• Grant number: 18/05392-8
• Support Opportunities: Regular Research Grants
• Start date: June 01, 2018
• End date: November 30, 2020
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
• Principal Investigator: Paula Rodrigues Teixeira Coelho
• Grantee: Paula Rodrigues Teixeira Coelho
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Stellar population (SP) models are invaluable to modern Extragalactic Astrophysics. They provide means to extract stellar masses, dust content, star formation and chemical enrichment histories of galaxies from their integrated spectral energy distributions, colours or spectra. We have pioneered the publication of high resolution spectral models with variable abundance patterns in Coelho et al. (2007), and further expanded them in Walcher et al. 2009; Coelho et al. 2011; Vazdekis et al. 2015). Abundance patterns are a keystone to understand galaxy evolution, as the chemical composition of stars in a galaxy encloses valuable information about the past histories of star formation, which in turn are clues to the baryonic cycle linking galaxies to their environment in a hierarchical universe. In this project we propose to: (1) expand the stellar library by Coelho (2014) in metallicity range and towards the infrared wavelength window; (2) use the new stellar spectra to expand the age, abundance and wavelength ranges of our SP models; and (3) incorporate the resulting models into the BEAGLE spectral-fitting tool (Chevallard & Charlot, 2016) to study selected samples of star clusters in the Galaxy and the Magellanic Cloud, and of different types of local galaxies. We will also perform a principal-component-analysis of fit residuals to separate the observed spectra into different 'residual classes', related to different chemical-abundance variations. The expected outcomes of this project are improved high-resolution spectral SP models, and valuable new insight into the variation of chemical abundances of stars in local galaxies, building the basis for a future, physically motivated development of SP models with multiple chemical parameters. (AU)

Scientific publications

(21)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VERRO, K.; TRAGER, S. C.; PELETIER, R. F.; LANCON, A.; GONNEAU, A.; VAZDEKIS, A.; PRUGNIEL, P.; CHEN, Y-P; COELHO, P. R. T.; SANCHEZ-BLAZQUEZ, P.; et al. The X-shooter Spectral Library (XSL): Data Release 3. Astronomy & Astrophysics, v. 660, p. 26-pg., 2022-04-05. (18/26381-4, 18/05392-8)

COELHO, PAULA R. T.; BRUZUAL, GUSTAVO; CHARLOT, STEPHANE. To use or not to use synthetic stellar spectra in population synthesis models?. Monthly Notices of the Royal Astronomical Society, v. 491, n. 2, p. 2025-2042, JAN 2020. (18/05392-8, 17/02375-2)

SILVA-LIMA, LUIZ A.; MARTINS, LUCIMARA P.; COELHO, PAULA R. T.; GADOTTI, DIMITRI A.. Revisiting the role of bars in AGN fuelling with propensity score sample matching. Astronomy & Astrophysics, v. 661, p. 14-pg., 2022-05-10. (18/24967-1, 18/05392-8)

WERLE, A.; FERNANDES, R. CID; ASARI, N. VALE; COELHO, P. R. T.; BRUZUAL, G.; CHARLOT, S.; DE CARVALHO, R. R.; HERPICH, F. R.; DE OLIVEIRA, C. MENDES; SODR, L.; et al. Clues on the history of early-type galaxies from SDSS spectra and GALEX photometry. Monthly Notices of the Royal Astronomical Society, v. 497, n. 3, p. 13-pg., 2020-09-01. (19/01768-6, 12/00800-4, 18/05392-8, 19/11910-4)

NOGUEIRA-CAVALCANTE, J. P.; DUPKE, R.; COELHO, P.; DANTAS, M. L. L.; GONCALVES, T. S.; MENENDEZ-DELMESTRE, K.; DE OLIVEIRA, R. LOPES; JIMENEZ-TEJA, Y.; LOPEZ-SANJUAN, C.; ALCANIZ, J.; et al. J-PLUS: Impact of bars on quenching timescales in nearby green valley disc galaxies. Astronomy & Astrophysics, v. 630, SEP 25 2019. (18/05392-8)

ROSADO-BELZA, D.; FALCON-BARROSO, J.; KNAPEN, J. H.; BITTNER, A.; GADOTTI, D. A.; NEUMANN, J.; DE LORENZO-CACERES, A.; MENDEZ-ABREU, J.; QUEREJETA, M.; MARTIN-NAVARRO, I.; et al. The kinematics of young and old stellar populations in nuclear rings of MUSE TIMER galaxies. Astronomy & Astrophysics, v. 644, DEC 8 2020. (18/05392-8)

DANTAS, M. L. L.; COELHO, P. R. T.; DE SOUZA, R. S.; GONCALVES, T. S.. UV bright red-sequence galaxies: how do UV upturn systems evolve in redshift and stellar mass?. Monthly Notices of the Royal Astronomical Society, v. 492, n. 2, p. 2996-3011, FEB 2020. (18/05392-8)

GONCALVES, GERALDO; COELHO, PAULA; SCHIAVON, RICARDO; USHER, CHRISTOPHER. How well can we determine ages and chemical abundances from spectral fitting of integrated light spectra?. Monthly Notices of the Royal Astronomical Society, v. 499, n. 2, p. 2327-2339, DEC 2020. (18/05392-8)

BITTNER, ADRIAN; SANCHEZ-BLAZQUEZ, PATRICIA; GADOTTI, DIMITRI A.; NEUMANN, JUSTUS; FRAGKOUDI, FRANCESCA; COELHO, PAULA; DE LORENZO-CACERES, ADRIANA; FALCON-BARROSO, JESUS; KIM, TAEHYUN; LEAMAN, RYAN; et al. Inside-out formation of nuclear discs and the absence of old central spheroids in barred galaxies of the TIMER survey. Astronomy & Astrophysics, v. 643, NOV 3 2020. (18/05392-8)

RODRIGUEZ-MERINO, LINO H.; MAYYA, Y. D.; COELHO, PAULA R. T.; BRUZUAL, GUSTAVO; CHARLOT, STEPHANE; CARRASCO, ESPERANZA; DE PAZ, ARMANDO GIL. High-resolution Spectral Line Indices Useful for the Analysis of Stellar Populations. Astrophysical Journal Letters, v. 889, n. 2, FEB 1 2020. (18/05392-8, 17/02375-2)

BARBOSA, C. E.; ZARITSKY, D.; DONNERSTEIN, R.; ZHANG, H.; DEY, A.; DE OLIVEIRA, C. MENDES; SAMPEDRO, L.; MOLINO, A.; COSTA-DUARTE, M. V.; COELHO, P.; et al. One Hundred SMUDGes in S-PLUS: Ultra-diffuse Galaxies Flourish in the Field. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, v. 247, n. 2, APR 2020. (18/21661-9, 11/51680-6, 18/24389-8, 18/05392-8, 19/11910-4, 09/54006-4, 16/12331-0, 16/17119-9, 09/54202-8, 16/21664-2)

EDWARDS, V, LOUISE O.; SALINAS, MATTHEW; STANLEY, STEFFANIE; WEST, PRISCILLA E. HOLGUIN; TRIERWEILER, ISABELLA; ALPERT, HANNAH; COELHO, PAULA; KOPPAKA, SAISNEHA; TREMBLAY, GRANT R.; MARTEL, HUGO; et al. Clocking the formation of today's largest galaxies: wide field integral spectroscopy of brightest cluster galaxies and their surroundings. Monthly Notices of the Royal Astronomical Society, v. 491, n. 2, p. 2617-2638, JAN 2020. (18/05392-8)

GONNEAU, A.; LYUBENOVA, M.; LANCON, A.; TRAGER, S. C.; PELETIER, R. F.; ARENTSEN, A.; CHEN, Y. -P.; COELHO, P. R. T.; DRIES, M.; FALCON-BARROSO, J.; et al. The X-shooter Spectral Library (XSL): Data release 2. Astronomy & Astrophysics, v. 634, FEB 25 2020. (18/05392-8)

BONOLI, S.; MARIN-FRANCH, A.; VARELA, J.; VAZQUEZ RAMIO, H.; ABRAMO, L. R.; CENARRO, A. J.; DUPKE, R. A.; VILCHEZ, J. M.; CRISTOBAL-HORNILLOS, D.; GONZALEZ DELGADO, R. M.; et al. The miniJPAS survey: A preview of the Universe in 56 colors. Astronomy & Astrophysics, v. 653, SEP 3 2021. (18/05392-8, 11/18729-1, 15/11442-0, 17/02375-2)

DANTAS, M. L. L.; COELHO, P. R. T.; SANCHEZ-BLAZQUEZ, P.. UV upturn versus UV weak galaxies: differences and similarities of their stellar populations unveiled by a de-biased sample. Monthly Notices of the Royal Astronomical Society, v. 500, n. 2, p. 1870-1883, JAN 2021. (18/05392-8)

RODRIGUEZ-MARTIN, J. E.; DELGADO, R. M. GONZALEZ; MARTINEZ-SOLAECHE, G.; DIAZ-GARCIA, L. A.; DE AMORIM, A.; GARCIA-BENITO, R.; PEREZ, E.; FERNANDES, R. CID; CARRASCO, E. R.; MATURI, M.; et al. The miniJPAS survey Galaxy populations in the most massive cluster in miniJPAS: mJPC2470-1771. Astronomy & Astrophysics, v. 666, p. 24-pg., 2022-10-21. (18/05392-8, 19/10923-5)

DELGADO, R. M. GONZALEZ; DIAZ-GARCIA, L. A.; DE AMORIM, A.; BRUZUAL, G.; FERNANDES, R. CID; PEREZ, E.; BONOLI, S.; CENARRO, A. J.; COELHO, P. R. T.; CORTESI, A.; et al. The miniJPAS survey: Identification and characterization of galaxy populations with the J-PAS photometric system. Astronomy & Astrophysics, v. 649, MAY 13 2021. (18/05392-8, 19/10923-5)

VERRO, K.; TRAGER, S. C.; PELETIER, R. F.; LANCON, A.; ARENTSEN, A.; CHEN, Y-P; COELHO, P. R. T.; DRIES, M.; FALCON-BARROSO, J.; GONNEAU, A.; et al. Modelling simple stellar populations in the near-ultraviolet to near-infrared with the X-shooter Spectral Library (XSL). Astronomy & Astrophysics, v. 661, p. 30-pg., 2022-05-02. (18/05392-8, 18/26381-4)

MILLAN-IRIGOYEN, I.; MOLLA, M.; CERVINO, M.; ASCASIBAR, Y.; GARCIA-VARGAS, M. L.; COELHO, P. R. T.. R-pypopstar: high-wavelength-resolution stellar populations evolutionary synthesis mode. Monthly Notices of the Royal Astronomical Society, v. 506, n. 4, p. 4781-4799, OCT 2021. (18/05392-8)

DE BRITO SILVA, DANIELLE; COELHO, PAULA; CORTESI, ARIANNA; BRUZUAL, GUSTAVO; MAGRIS, GLADIS C.; CHIES-SANTOS, ANA L.; HERNANDEZ-JIMENEZ, JOSE A.; EDEROCLITE, ALESSANDRO; SAN ROMAN, IZASKUN; VARELA, JESUS; et al. J-PLUS: Detecting and studying extragalactic globular clusters The case of NGC 1023. Astronomy & Astrophysics, v. 664, p. 22-pg., 2022-08-18. (09/54006-4, 21/08920-8, 17/00204-6, 18/05392-8)

NOGUEIRA-CAVALCANTE, J. P.; DUPKE, R.; COELHO, P.; DANTAS, M. L. L.; GONCALVES, T. S.; MENENDEZ-DELMESTRE, K.; DE OLIVEIRA, R. LOPES; JIMENEZ-TEJA, Y.; LOPEZ-SANJUAN, C.; ALCANIZ, J.; et al. J-PLUS: Impact of bars on quenching timescales in nearby green valley disc galaxies. ASTRONOMY & ASTROPHYSICS, v. 630, p. 14-pg., 2019-09-25. (18/05392-8)