Results 31 to 40 of about 165,855 (235)

The red stellar population in NGC 1569 [PDF]

, 2000
We present HST NICMOS photometry of the resolved stellar population in NGC 1569. The CMD in the F110W and F160W photometric bands contains ~2400 stars with a formal photometric error < 0.1 mag down to J~23.5 and H~22.5.
A. Aloisi, A. Nota, Babul A., Claus Leitherer, Cole S., E. Diolaiti, Fagotto F., Fagotto F., G. Parmeggiani, Greve A., Israel F. P., Israel F. P., Kauffmann G., L. Greggio, L. Origlia, Legrand F., M. Clampin, M. Tosi, Melnick J., Moller C. S., Papaderos P., Prada F., Stil J. M., Taylor C. L., Tomita A., Vallenari A.   +25 more
core   +2 more sources

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

High-eccentricity Migration with Disk-induced Spin–Orbit Misalignment: A Preference for Perpendicular Hot Jupiters

The Astrophysical Journal Letters, 2023
High-eccentricity migration is a likely formation mechanism for many observed hot Jupiters, particularly those with a large misalignment between the stellar spin axis and orbital angular momentum axis of the planet.
Michelle Vick, Yubo Su, Dong Lai
doaj   +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

Spectral Synthesis of Star-forming Galaxies in the Near-Infrared [PDF]

, 2013
The near-infrared spectral region is becoming a very useful wavelength range to detect and quantify the stellar population of galaxies. Models are developing to predict the contribution of TP-AGB stars, that should dominate the NIR spectra of populations
de Souza, Ronaldo, Diniz, Suzi, Martins, Lucimara, Riffel, Rogério, Rodríguez-Ardila, Alberto   +4 more
core   +2 more sources

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

The AIMSS Project - I. Bridging the star cluster-galaxy divide [PDF]

, 2014
We describe the structural and kinematic properties of the first compact stellar systems discovered by the Archive of Intermediate Mass Stellar Systems project.
Bradley, D., Brodie, J. P., Eckert, K. D., Faifer, F. R., Fohring, D., Forbes, D. A., Huxor, A., Kannappan, S. J., Maraston, C., McBride, J., Moffett, A. J., Norris, M. A., Penny, S. J., Pota, V., Romanowsky, A. J., Smith-Castelli, A., Stark, D. V., Strader, J., Vaduvescu, O.   +18 more
core   +6 more sources

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

The high mass end of the stellar mass function: Dependence on stellar population models and agreement between fits to the light profile

, 2017
We quantify the systematic effects on the stellar mass function which arise from assumptions about the stellar population, as well as how one fits the light profiles of the most luminous galaxies at z ~ 0.1. When comparing results from the literature, we
Bernardi, M., Fischer, J. -L., Huertas-Company, M., Maraston, C., Meert, A., Shankar, F., Sheth, R. K., Vikram, V.   +7 more
core   +2 more sources

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source