Results 81 to 90 of about 6,178,117 (397)

Stellar Populations of UV-Selected Active Galactic Nuclei Host Galaxies at z ~ 2 - 3 [PDF]

, 2012
We use stellar population synthesis modeling to analyze the host galaxy properties of a sample of 33 UV-selected, narrow-lined active galactic nuclei (AGNs) at z ~ 2 - 3.
Adelberger, Adelberger, Adelberger, Adelberger, Aird, Alexander, Alexander, Alice E. Shapley, Alonso-Herrero, Alonso-Herrero, Alonso-Herrero, Assef, Baldry, Barger, Barth, Bell, Bentz, Bundy, Calzetti, Cardamone, Charles C. Steidel, Coil, Daddi, Dawn K. Erb, Donley, Erb, Erb, Fadda, Fazio, Ferrarese, Gebhardt, Gordon, Grogin, Gültekin, Hainline, Hainline, Hickox, Hickox, Hopkins, Hopkins, Hopkins, Häring, Jenny E. Greene, Kevin N. Hainline, Kocevski, Koekemoer, Kriek, Kriek, Labbé, Lacy, Lacy, Lauer, Law, Maraston, Maíz Apellániz, Merloni, Nandra, Naveen A. Reddy, Noeske, Pannella, Papovich, Park, Persson, Polletta, Reddy, Reddy, Reddy, Reddy, Reddy, Reddy, Richards, Salim, Sawicki, Schawinski, Shapley, Shapley, Shapley, Shapley, Silverman, Silverman, Steidel, Steidel, Steidel, Stern, Tremonti, Vestergaard, Williams, Xue, Zakamska   +88 more
core   +2 more sources

The Carnegie-Irvine Galaxy Survey. X. Bulges in Stellar Mass–based Scaling Relations

The Astrophysical Journal Supplement Series, 2022
We measure optical colors for the bulges of 312 disk galaxies from the Carnegie-Irvine Galaxy Survey and convert their previously available R -band structural parameters to stellar-mass parameters.
Hua Gao, Luis C. Ho, Zhao-Yu Li
doaj   +1 more source

The stellar accretion origin of stellar population gradients in massive galaxies at large radii [PDF]

, 2014
We investigate the evolution of stellar population gradients from z = 2 to z = 0 in massive galaxies at large radii (r > 2Reff) using ten cosmological zoom simulations of halos with 6 × 10 12 M⊙ < Mhalo < 2 × 10 13 M⊙.
M. Hirschmann, T. Naab, J. Ostriker, D. Forbes, P. Duc, R. Dav'e, L. Oser, Emin Karabal   +7 more
semanticscholar   +1 more source

Effects of chronic browsing on life‐history traits of an irruptive large herbivore population

Population Ecology, EarlyView.
This study aimed to determine the relationship between diet quality, body mass, and size (hind foot length), and female reproduction and sought to identify the mechanism by which high density under severe food limitations is maintained. Our results demonstrated that sika deer introduced to Nakanoshima Island have maintained high densities through high ...
Koichi Kaji, Kazutaka M. Takeshita, Hiroshi Takahashi, Hiromasa Igota, Mayumi Ueno, Yukiko Matsuura, Takashi Ikeda, Ryo Yoshizawa, Hino Takafumi, Tsuyoshi Yoshida   +9 more
wiley   +1 more source

The Chemodynamical Nature of the Triangulum–Andromeda Overdensity

The Astrophysical Journal, 2023
We present a chemodynamical study of the Triangulum–Andromeda overdensity (TriAnd) employing a sample of 31 candidate stars observed with the GRACES high-resolution ( R = 40,000) spectrograph at the Gemini North (8.1 m) telescope.
Yuri Abuchaim, Hélio D. Perottoni, Silvia Rossi, Guilherme Limberg, Angeles Pérez-Villegas, Rafael M. Santucci, Vinicius M. Placco, João V. Sales-Silva, Friedrich Anders, Helio J. Rocha-Pinto   +9 more
doaj   +1 more source

The Stellar Populations of Pixels and Frames [PDF]

The Astronomical Journal, 1998
28 pages, LaTeX file using aasms4.sty, 2 postscript figures To appear on: The Astronomical ...
Alvio Renzini, Alvio Renzini
openaire   +3 more sources

Constraining globular cluster formation through studies of young massive clusters – II. A single stellar population young massive cluster in NGC 34 [PDF]

, 2014
Currently there are two competing scenarios to explain the origin of the stellar population in globular clusters (GCs). The main difference between them is whether or not multiple events of star formation took place within GCs.
I. Cabrera-Ziri, N. Bastian, B. Davies, G. Magris, G. Bruzual, Francois Schweizer   +5 more
semanticscholar   +1 more source

Painting a portrait of the Galactic disc with its stellar clusters [PDF]

Astronomy & Astrophysics, 2020
Context.The large astrometric and photometric survey performed by theGaiamission allows for a panoptic view of the Galactic disc and its stellar cluster population.
T. Cantat-Gaudin, F. Anders, A. Castro-Ginard, C. Jordi, M. Romero-Gómez, C. Soubiran, L. Casamiquela, Y. Tarricq, A. Moitinho, A. Vallenari, A. Bragaglia, A. Krone-Martins, M. Kounkel   +12 more
semanticscholar   +1 more source

Combining transient dynamics and logistic‐asymptotic growth to study the recovery of two seabird populations after rat eradication

Population Ecology, EarlyView.
This study examines the demographic dynamics of two seabird populations on Tromelin Island, 15 years after the eradication of brown rats. The results indicate that these populations are in good health and are expected to continue growing until breeding sites are saturated in about a century.
Merlène Saunier, Christophe Barbraud, Maxime Amy, Sabine Orlowski, Jean Hivert, Gabrielle Dicque, Matthieu Le Corre   +6 more
wiley   +1 more source

The Stellar Ages and Masses of Short GRB Host Galaxies: Investigating the Progenitor Delay Time Distribution and the Role of Mass and Star Formation in the Short GRB Rate

, 2010
[Abridged] We present optical and NIR observations of 19 short GRB host galaxies, aimed at measuring their stellar masses and population ages. The goals of this study are to evaluate whether short GRBs track the stellar mass distribution of galaxies, to ...
Belczynski, Bell, Berger, Berger, Berger, Berger, Berger, Bloom, Brandt, C. N. Leibler, Conroy, E. Berger, Fong, Gehrels, Graham, Hamuy, Ilbert, Kann, Lazzati, Levesque, Levesque, Levesque, Nysewander, Ofek, Paczynski, Qin, Rowlinson, Savaglio, Schlegel, Soderberg, Stanek, Sullivan, Thöne, Virgili, Zhang, Zhang, Zheng   +36 more
core   +1 more source