Search Results - "Charlot, Stéphane"

Modelling and interpreting spectral energy distributions of galaxies with beagle by Chevallard, Jacopo, Charlot, Stéphane

“…We present a new-generation tool to model and interpret spectral energy distributions (SEDs) of galaxies, which incorporates in a consistent way the production…”
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Modelling the nebular emission from primeval to present-day star-forming galaxies by Gutkin, Julia, Charlot, Stéphane, Bruzual, Gustavo

“…We present a new model of the nebular emission from star-forming galaxies in a wide range of chemical compositions, appropriate to interpret observations of…”
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MMT/MMIRS spectroscopy of z = 1.3 - 2.4 extreme [O iii] emitters: implications for galaxies in the reionization era by Tang, Mengtao, Stark, Daniel P, Chevallard, Jacopo, Charlot, Stéphane

“…ABSTRACT Galaxies in the reionization era have been shown to have prominent [O iii] + H β emission. Little is known about the gas conditions and radiation…”
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VARIATIONS OF THE STELLAR INITIAL MASS FUNCTION IN THE PROGENITORS OF MASSIVE EARLY-TYPE GALAXIES AND IN EXTREME STARBURST ENVIRONMENTS by Chabrier, Gilles, Hennebelle, Patrick, Charlot, Stephane

“…We examine variations of the stellar initial mass function (IMF) in extreme environments within the formalism derived by Hennebelle & Chabrier. We focus on…”
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Star formation histories of UV-luminous galaxies at z ≃ 6.8: implications for stellar mass assembly at early cosmic times by Whitler, Lily, Stark, Daniel P, Endsley, Ryan, Leja, Joel, Charlot, Stéphane, Chevallard, Jacopo

“…ABSTRACT The variety of star formation histories (SFHs) of z ≳ 6 galaxies provides important insights into early star formation, but has been difficult to…”
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On the ages of bright galaxies ∼500 Myr after the big bang: insights into star formation activity at z ≳ 15 with JWST by Whitler, Lily, Endsley, Ryan, Stark, Daniel P, Topping, Michael, Chen, Zuyi, Charlot, Stéphane

“…ABSTRACT With JWST, new opportunities to study the evolution of galaxies in the early Universe are emerging. Spitzer constraints on rest-optical properties of…”
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A simple model to interpret the ultraviolet, optical and infrared emission from galaxies by Da Cunha, Elisabete, Charlot, Stéphane, Elbaz, David

“…We present a simple, largely empirical but physically motivated model to interpret the mid- and far-infrared spectral energy distributions of galaxies…”
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A JWST/NIRCam study of key contributors to reionization: the star-forming and ionizing properties of UV-faint z ∼ 7−8 galaxies by Endsley, Ryan, Stark, Daniel P, Whitler, Lily, Topping, Michael W, Chen, Zuyi, Plat, Adèle, Chisholm, John, Charlot, Stéphane

“…ABSTRACT Spitzer/Infrared Array Camera (IRAC) imaging has revealed that the brightest z ∼ 7−8 galaxies often exhibit young ages and strong nebular line…”
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JWST/NIRCam observations of stars and H  ii regions in z ≃ 6–8 galaxies: properties of star-forming complexes on 150 pc scales by Chen, Zuyi, Stark, Daniel P, Endsley, Ryan, Topping, Michael, Whitler, Lily, Charlot, Stéphane

“…ABSTRACT The onset of the JWST-era provides a much-improved opportunity to characterize the resolved structure of early star-forming systems. Previous Spitzer…”
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Ultraviolet spectra of extreme nearby star-forming regions – approaching a local reference sample for JWST by Senchyna, Peter, Stark, Daniel P., Vidal-García, Alba, Chevallard, Jacopo, Charlot, Stéphane, Mainali, Ramesh, Jones, Tucker, Wofford, Aida, Feltre, Anna, Gutkin, Julia

“…Abstract Nearby dwarf galaxies provide a unique laboratory in which to test stellar population models below Z⊙/2. Such tests are particularly important for…”
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Rest-frame UV spectroscopy of extreme [O iii] emitters at 1.3 < z < 3.7: toward a high-redshift UV reference sample for JWST by Tang, Mengtao, Stark, Daniel P, Chevallard, Jacopo, Charlot, Stéphane, Endsley, Ryan, Congiu, Enrico

“…ABSTRACT Deep spectroscopy of galaxies in the reionization era has revealed intense C iii] and C iv line emission (equivalent width, EW >15–20 Å). In order to…”
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Variations of the stellar initial mass function in semi-analytical models: implications for the mass assembly and the chemical enrichment of galaxies in the gaea model by Fontanot, Fabio, De Lucia, Gabriella, Hirschmann, Michaela, Bruzual, Gustavo, Charlot, Stéphane, Zibetti, Stefano

“…In this paper, we investigate the implications of the integrated galaxy-wide stellar initial mass function (IGIMF) approach in the framework of the…”
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Early Low-mass Galaxies and Star-cluster Candidates at z ∼ 6-9 Identified by the Gravitational-lensing Technique and Deep Optical/Near-infrared Imaging by Kikuchihara, Shotaro, Ouchi, Masami, Ono, Yoshiaki, Mawatari, Ken, Chevallard, Jacopo, Harikane, Yuichi, Kojima, Takashi, Oguri, Masamune, Bruzual, Gustavo, Charlot, Stéphane

“…We present very faint dropout galaxies at z ∼ 6−9 with a stellar mass M down to that are found in deep optical/near-infrared (NIR) images of the full data sets…”
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MMT spectroscopy of Lyman-alpha at z ≃ 7: evidence for accelerated reionization around massive galaxies by Endsley, Ryan, Stark, Daniel P, Charlot, Stéphane, Chevallard, Jacopo, Robertson, Brant, Bouwens, Rychard J, Stefanon, Mauro

“…ABSTRACT Reionization-era galaxies tend to exhibit weak Ly α emission, likely reflecting attenuation from an increasingly neutral IGM. Recent observations have…”
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How robustly can we constrain the low-mass end of the z ∼ 6−7 stellar mass function? The limits of lensing models and stellar population assumptions in the Hubble Frontier Fields by Furtak, Lukas J, Atek, Hakim, Lehnert, Matthew D, Chevallard, Jacopo, Charlot, Stéphane

“…ABSTRACT We present new measurements of the very low mass end of the galaxy stellar mass function (GSMF) at z ∼ 6−7 computed from a rest-frame ultraviolet…”
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Spectroscopic detections of C iii] λ1909 Å at z ≃ 6–7: a new probe of early star-forming galaxies and cosmic reionization by Stark, Daniel P., Richard, Johan, Charlot, Stéphane, Clément, Benjamin, Ellis, Richard, Siana, Brian, Robertson, Brant, Schenker, Matthew, Gutkin, Julia, Wofford, Aida

“…Deep spectroscopic observations of z ≳ 6.5 galaxies have revealed a marked decline with increasing redshift in the detectability of Ly α emission. While this…”
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Physical properties and H-ionizing-photon production rates of extreme nearby star-forming regions by Chevallard, Jacopo, Charlot, Stéphane, Senchyna, Peter, Stark, Daniel P, Vidal-García, Alba, Feltre, Anna, Gutkin, Julia, Jones, Tucker, Mainali, Ramesh, Wofford, Aida

“…Measurements of the galaxy UV luminosity function at z 6 suggest that young stars hosted in low-mass star-forming galaxies produced the bulk of…”
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New insights into the stellar content and physical conditions of star-forming galaxies at z= 2–3 from spectral modelling by Brinchmann, Jarle, Pettini, Max, Charlot, Stéphane

“…We have used extensive libraries of model and empirical galaxy spectra [assembled, respectively, from the population synthesis code of Bruzual and Charlot and…”
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Lyman-alpha spectroscopy of extreme [O iii] emitting galaxies at z ≃ 2-3: implications for Lyα visibility and LyC leakage at z > 6 by Tang, Mengtao, Stark, Daniel P, Chevallard, Jacopo, Charlot, Stéphane, Endsley, Ryan, Congiu, Enrico

“…ABSTRACT Spectroscopic observations of massive z > 7 galaxies selected to have extremely large [O iii] + H β equivalent width (EW ∼1500 Å) have recently…”
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High-mass X-ray binaries in nearby metal-poor galaxies: on the contribution to nebular He ii emission by Senchyna, Peter, Stark, Daniel P, Mirocha, Jordan, Reines, Amy E, Charlot, Stéphane, Jones, Tucker, Mulchaey, John S

“…ABSTRACT Despite significant progress both observationally and theoretically, the origin of high-ionization nebular He ii emission in galaxies dominated by…”
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