Search Results - "Trager, S."

On the interpretation of the age and chemical composition of composite stellar populations determined with line-strength indices by Serra, P., Trager, S. C.

“…We study the simple stellar population-equivalent (SSP-equivalent) age and chemical composition measured from the Lick/IDS line-strength indices of composite…”
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The X-Shooter Lens Survey - I. Dark matter domination and a Salpeter-type initial mass function in a massive early-type galaxy by Spiniello, C., Koopmans, L. V. E., Trager, S. C., Czoske, O., Treu, T.

“…We present the first results from the X-Shooter Lens Survey: an analysis of the massive early-type galaxy SDSS J1148+1930 at redshift z= 0.444. We combine its…”
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The stellar population histories of early-type galaxies – III. The Coma cluster by Trager, S. C., Faber, S. M., Dressler, Alan

“…We present stellar population parameters of 12 elliptical and S0 galaxies in the Coma cluster around and including the cD galaxy NGC 4874, based on spectra…”
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THE NON-UNIVERSALITY OF THE LOW-MASS END OF THE IMF IS ROBUST AGAINST THE CHOICE OF SSP MODEL by Spiniello, C., Trager, S. C., Koopmans, L. V. E.

“…ABSTRACT We perform a direct comparison of two state-of-the art single stellar population (SSP) models that have been used to demonstrate the non-universality…”
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An indirect measurement of gas evolution in galaxies at 0.5 < z < 2.0 by Popping, G., Caputi, K. I., Somerville, R. S., Trager, S. C.

“…Abstract One key piece of information missing from high-redshift galaxy surveys is the galaxies' cold gas contents. We present a new method to indirectly…”
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Probing recent star formation with absorption-line strengths in hierarchical models and observations by Trager, S. C., Somerville, R. S.

“…Stellar population parameters (e.g. age, metallicity and stellar abundance ratios) derived from spectral line strengths provide a powerful probe of galaxy…”
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IMF shape constraints from stellar populations and dynamics from CALIFA by Lyubenova, M, Martin-Navarro, I, van de Ven, G, Falcon-Barroso, J, Galbany, L, Gallazzi, A, Garcia-Benito, R, Delgado, R Gonzalez, Husemann, B, LaBarbera, F, Marino, R A, Mast, D, Mendez-Abreu, J, Peletier, R FP, Sanchez-Blazquez, P, Sanchez, S F, Trager, S C, vandenBosch, R CE, Vazdekis, A, Walcher, C J, Zhu, L, Zibetti, S, Ziegler, B, Bland-Hawthorn, J

“…In this Paper, we describe how we use stellar dynamics information to constrain the shape of the stellar initial mass function (IMF) in a sample of 27…”
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The inferred evolution of the cold gas properties of CANDELS galaxies at 0.5 < z < 3.0 by Popping, G, Caputi, K I, Trager, S C, Somerville, R S, Dekel, A, Kassin, S A, Kocevski, D D, Koekemoer, A M, Faber, S M, Ferguson, H C, Galametz, A, Grogin, N A, Guo, Y, Lu, Y, van der Wel, A, Weiner, B J

“…We derive the total cold gas, atomic hydrogen, and molecular gas masses of approximately 24 000 galaxies covering four decades in stellar mass at redshifts 0.5…”
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The nature of the ISM in galaxies during the star-formation activity peak of the Universe by Popping, G., Pérez-Beaupuits, J. P., Spaans, M., Trager, S. C., Somerville, R. S.

“…We combine a semi-analytic model of galaxy formation, tracking atomic and molecular phases of cold gas, with a three-dimensional radiative-transfer and line…”
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An ancient metal-poor population in M32, and halo satellite accretion in M31, identified by RR Lyrae stars by Sarajedini, Ata, Yang, S.-C., Monachesi, A., Lauer, Tod R., Trager, S. C.

“…Abstract We present time series photometry of two fields near M32 using archival observations from the Advanced Camera for Surveys Wide Field Channel on-board…”
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A hierarchical Bayesian approach for reconstructing the initial mass function of single stellar populations by Dries, M., Trager, S. C., Koopmans, L. V. E.

“…Recent studies based on the integrated light of distant galaxies suggest that the initial mass function (IMF) might not be universal. Variations of the IMF…”
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Hierarchical Bayesian inference of the initial mass function in composite stellar populations by Dries, M, Trager, S C, Koopmans, L V E, Popping, G, Somerville, R S

“…AbstractThe initial mass function (IMF) is a key ingredient in many studies of galaxy formation and evolution. Although the IMF is often assumed to be…”
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Dynamical black hole masses of BL Lac objects from the Sloan Digital Sky Survey by Plotkin, R. M., Markoff, S., Trager, S. C., Anderson, S. F.

“…We measure black hole masses for 71 BL Lac objects from the Sloan Digital Sky Survey with redshifts out to z∼ 0.4. We perform spectral decompositions of their…”
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The Gaia spectrophotometric standard stars survey - I. Preliminary results by Pancino, E., Altavilla, G., Marinoni, S., Cocozza, G., Carrasco, J. M., Bellazzini, M., Bragaglia, A., Federici, L., Rossetti, E., Cacciari, C., Balaguer Núñez, L., Castro, A., Figueras, F., Fusi Pecci, F., Galleti, S., Gebran, M., Jordi, C., Lardo, C., Masana, E., Monguió, M., Montegriffo, P., Ragaini, S., Schuster, W., Trager, S., Vilardell, F., Voss, H.

“…Abstract We describe two ground-based observing campaigns aimed at building a grid of approximately 200 spectrophotometric standard stars (SPSS), with an…”
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The X-Shooter Lens Survey – II. Sample presentation and spatially-resolved kinematics by Spiniello, C., Koopmans, L. V. E., Trager, S. C., Barnabè, M., Treu, T., Czoske, O., Vegetti, S., Bolton, A.

“…We present the X-Shooter Lens Survey (XLENS) data. The main goal of XLENS is to disentangle the stellar and dark matter content of massive early-type galaxies…”
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Hot stars in old stellar populations: a continuing need for intermediate ages by Trager, S. C., Worthey, Guy, Faber, S. M., Dressler, Alan

“…We investigate the effect of a low-level contamination of hot, old, metal-poor starlight on the inferred stellar populations of early-type galaxies in the core…”
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Withdrawn as Duplicate: IMF shape constraints from stellar populations and dynamics from CALIFA by Lyubenova, M, Martín-Navarro, I, van de Ven, G, Falcón-Barroso, J, Galbany, L, Gallazzi, A, García-Benito, R, Delgado, R González, Husemann, B, La Barbera, F, Marino, R A, Mast, D, Mendez-Abreu, J, Peletier, R F P, Sánchez-Blázquez, P, Sánchez, S F, Trager, S C, van den Bosch, R C E, Vazdekis, A, Walcher, C J, Zhu, L, Zibetti, S, Ziegler, B, Bland-Hawthorn, J

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Evidence for Intermediate-Age Stellar Populations in Early-Type Galaxies from K-Band Spectroscopy by Mármol-Queraltó, E, Cardiel, N, Sánchez-Blázquez, P, Trager, S. C, Peletier, R. F, Kuntschner, H, Silva, D. R, Cenarro, A. J, Vazdekis, A, Gorgas, J

“…The study of stellar populations in early-type galaxies in different environments is a powerful tool for constraining their star formation histories. This…”
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Determination of the Dark Matter Profile of A2199 from Integrated Starlight by Kelson, Daniel D, Zabludoff, Ann I, Williams, K. A, Trager, S. C, Mulchaey, J. S, Bolte, Michael

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QUALITY IS KEY by Trager, Peter S., DDS

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