Results 61 to 70 of about 1,635,352 (355)

The Impact of Binaries on the Stellar Initial Mass Function [PDF]

The Impact of Binary Stars on Stellar Evolution, 2018
(abridged) The stellar initial mass function (IMF) can be conveniently represented as a canonical two-part power law function and is largely invariant for star formation regions evident in the Local Group of galaxies. The IMF is a hilfskonstrukt. It is a
P. Kroupa, T. Jeřábková
semanticscholar   +1 more source

SDSS-IV MaNGA: the spatially resolved stellar initial mass function in ∼400 early-type galaxies [PDF]

, 2018
MaNGA provides the opportunity to make precise spatially resolved measurements of the IMF slope in galaxies owing to its unique combination of spatial resolution, wavelength coverage and sample size.
T. Parikh, D. Thomas, C. Maraston, K. Westfall, D. Goddard, J. Lian, S. Meneses-Goytia, Amy M. Jones, S. Vaughan, B. Andrews, M. Bershady, D. Bizyaev, J. Brinkmann, J. Brownstein, K. Bundy, N. Drory, E. Emsellem, D. Law, J. Newman, A. Roman-Lopes, D. Wake, R. Yan, Zheng Zheng   +22 more
semanticscholar   +1 more source

The Mass to Light Ratio and the Initial Mass Function in Galactic Discs [PDF]

Astrophysics and Space Science, 2003
A low mass-to-light ratio for the baryonic component of spiral galaxies is advocated by a number of dynamical studies and by cosmological simulations of galaxy formation. We discuss the possibility of obtaining low mass-to-light ratios for the stellar component in discs, by changing the Initial Mass Function and the Star Formation History.
Rosaria Tantalo, Laura Portinari, Jesper Sommer-Larsen   +2 more
openaire   +4 more sources

The Initial Mass Function of the First Stars Inferred from Extremely Metal-poor Stars [PDF]

, 2018
We compare the elemental abundance patterns of ∼200 extremely metal-poor (EMP; [Fe/H] < −3) stars to the supernova yields of metal-free stars, in order to obtain insights into the characteristic masses of the first (Population III or Pop III) stars in ...
M. Ishigaki, N. Tominaga, C. Kobayashi, K. Nomoto   +3 more
semanticscholar   +1 more source

Constraining the Initial Mass Function in the Epoch of Reionization from Astrophysical and Cosmological Data

Universe
We aim to constrain the stellar initial mass function (IMF) during the epoch of reionization. To this purpose, we build up a semi-empirical model for the reionization history of the Universe based on various ingredients: the latest determination of the ...
Andrea Lapi, Giovanni Gandolfi, Lumen Boco, Francesco Gabrielli, Marcella Massardi, Balakrishna S. Haridasu, Carlo Baccigalupi, Alessandro Bressan, Luigi Danese   +8 more
doaj   +1 more source

Initial mass function of planetesimals formed by the streaming instability [PDF]

, 2016
The streaming instability is a mechanism to concentrate solid particles into overdense filaments that undergo gravitational collapse and form planetesimals.
Urs Schafer, Chao-Chin Yang, A. Johansen
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

Universal Upper End of the Stellar Initial Mass Function in the Young and Compact LEGUS Clusters

The Astrophysical Journal, 2023
We investigate the variation in the upper end of the stellar initial mass function (uIMF) in 375 young and compact star clusters in five nearby galaxies within ∼5 Mpc. All the young stellar clusters (YSCs) in the sample have ages ≲ 4 Myr and masses above
Dooseok Escher Jung, Daniela Calzetti, Matteo Messa, Mark Heyer, Mattia Sirressi, Sean T. Linden, Angela Adamo, Rupali Chandar, Michele Cignoni, David O. Cook, Clare L. Dobbs, Bruce G. Elmegreen, Aaron S. Evans, Michele Fumagalli, John S. Gallagher III, Deidre A. Hunter, Kelsey E. Johnson, Robert C. Kennicutt Jr., Mark R. Krumholz, Daniel Schaerer, Elena Sabbi, Linda J. Smith, Monica Tosi, Aida Wofford   +23 more
doaj   +1 more source

The Initial mass function and stellar birthrate in the solar neighborhood

, 1979
We examine the initial mass function (IMF) and time history of the stellar birthrate in the solar neighborhood assuming a time-independent IMF. The present-day mass function is constructed from the luminosity function, and a discussion of all the ...
G. Miller, J. Scalo
semanticscholar   +1 more source

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