Results 31 to 40 of about 195,665 (278)

The Fall of a Giant. Chemical evolution of Enceladus, alias the Gaia Sausage [PDF]

, 2019
We present the first chemical evolution model for Enceladus, alias the Gaia Sausage, to investigate the star formation history of one of the most massive satellites accreted by the Milky Way during a major merger event.
Aguirre, Victor Silva, Calura, Francesco, Cescutti, Gabriele, Matteucci, Francesca, Miglio, Andrea, Spitoni, Emanuele, Vincenzo, Fiorenzo   +6 more
core   +4 more sources

The Chemical Evolution of the Galaxy [PDF]

Symposium - International Astronomical Union, 1985
Over the last few years, our picture of the chemical evolution of the Galaxy has changed substantially. These changes are of interest because chemical evolution provides a common point of contact for most astrophysical processes of importance to galaxy evolution.
openaire   +2 more sources

Short-lived Radionuclides in the Milky Way Galaxy [PDF]

EPJ Web of Conferences, 2023
The short-lived radionuclides (SLRs) have a half-life ≤ 100 Myr. The γ-ray observations and excess abundance of their daughter nuclides in various meteoritic phases confirm the existence of SLRs in the Galaxy and early solar system (ESS), respectively ...
Kaur Tejpreet
doaj   +1 more source

Energetic constraints to chemo-photometric evolution of spiral galaxies [PDF]

, 2011
The problem of chemo-photometric evolution of late-type galaxies is dealt with relying on prime physical arguments of energetic self-consistency between chemical enhancement of galaxy mass, through nuclear processing inside stars, and luminosity ...
Alberto Buzzoni, Alibés, Arimoto, Arimoto, Arimoto, Arimoto, Baade, Barnes, Beers, Beers, Bessell, Blanton, Boissier, Boissier, Boselli, Brandt, Buzzoni, Buzzoni, Buzzoni, Buzzoni, Calzetti, Carigi, Carlberg, Carraro, Casagrande, Cayrel, Cellone, Chevalier, Chiappini, Clayton, Clegg, Cooper, Cowie, Dahlen, Dallaporta, de Vaucouleurs, Dopita, Dressler, Edvardsson, Ferrini, Firmani, Flynn, Friel, Fukugita, Garcia, Garnett, Gavazzi, Gavazzi, Gavazzi, Giavalisco, Gilmore, Giovagnoli, Gordon, Gorgas, Greggio, Greggio, Greggio, Grevesse, Hashimoto, Henry, Hillebrandt, Holmberg, Jablonka, Jablonka, Jonsell, Kasen, Kennicutt, Kennicutt, Kennicutt, Khokhlov, Kobayashi, Koeppen, Kroupa, Kroupa, Kuzio, Köppen, Larson, Larson, Larson, Lee, Leitherer, Lequeux, Maciel, Maeder, Maiolino, Mallik, Mannucci, Maoz, Marigo, Marino, Matteucci, Matteucci, Matteucci, Matteucci, Matteucci, Melchior, Meusinger, Mihara, Miller, Milone, Nepveu, Nepveu, Nittler, Nomoto, Nomoto, Nordström, Oey, Pagel, Pagel, Pagel, Pagel, Pagel, Panagia, Pardi, Paturel, Peimbert, Peimbert, Peimbert, Pilyugin, Portinari, Prantzos, Prantzos, Pérez, Reinecke, Renzini, Renzini, Rifatto, Roberts, Roberts, Rocha-Pinto, Rocha-Pinto, Romano, Ryan, Salpeter, Sandage, Sandage, Saviane, Scalo, Scannapieco, Scannapieco, Schmidt, Schmidt, Serrano, Smartt, Sommer-Larsen, Sullivan, Tasca, Thielemann, Thuan, Timmes, Tinsley, Tornambé, Tosi, Trimble, Tully, Tully, Twarog, van den, van der Kruit, van Zee, Weidemann, Wirth, Woosley, Woosley, Wyse, Wyse, Zaritsky   +166 more
core   +2 more sources

On the α/Fe Bimodality of the M31 Disks

The Astrophysical Journal Letters, 2023
An outstanding question is whether the α /Fe bimodality exists in disk galaxies other than in the Milky Way. Here we present a bimodality using our state-of-the-art galactic chemical evolution models that can explain various observations in the Andromeda
Chiaki Kobayashi, Souradeep Bhattacharya, Magda Arnaboldi, Ortwin Gerhard   +3 more
doaj   +1 more source

A High-precision Survey of the D/H Ratio in the Nearby Interstellar Medium

The Astrophysical Journal, 2023
We present high signal-to-noise ratio measurements of the H i Ly α absorption line toward 16 Galactic targets that are at distances between approximately 190 and 2200 pc, all beyond the wall of the Local Bubble.
Scott D. Friedman, Pierre Chayer, Edward B. Jenkins, Todd M. Tripp, Gerard M. Williger, Guillaume Hébrard, Paule Sonnentrucker   +6 more
doaj   +1 more source

Chemical Evolution of Clusters of Galaxies

, 2001
The high metallicity of the intra-cluster medium (ICM) is generally interpreted on the base of the galactic wind scenario for elliptical galaxies. In this framework, we develop a toy-model to follow the chemical evolution of the ICM, formulated in analogy to chemical models for individual galaxies.
L. Portinari, A. Moretti, C. Chiosi
openalex   +4 more sources

NUCLEOSYNTHESIS AND THE INHOMOGENEOUS CHEMICAL EVOLUTION OF THE CARINA DWARF GALAXY [PDF]

, 2012
The detailed abundances of 23 chemical elements in nine bright red giant branch stars in the Carina dwarf spheroidal galaxy are presented based on high-resolution spectra gathered at the Very Large Telescope (VLT) and Magellan telescopes.
K. Venn, M. Shetrone, M. Irwin, V. Hill, P. Jablonka, E. Tolstoy, B. Lemasle, Mike Divell, E. Starkenburg, B. Letarte, C. Baldner, G. Battaglia, A. Helmi, A. Kaufer, F. Primas   +14 more
semanticscholar   +1 more source

Galactic Chemical Evolution of Radioactive Isotopes [PDF]

Astrophysical Journal, 2019
The presence of short-lived (∼Myr) radioactive isotopes in meteoritic inclusions at the time of their formation represents a unique opportunity to study the circumstances that led to the formation of the solar system.
Benoit Côté, M. Lugaro, R. Reifarth, M. Pignatari, Blanka Világos, A. Yagüe, B. Gibson   +6 more
semanticscholar   +1 more source

Elemental Abundances in M31: The Kinematics and Chemical Evolution of Dwarf Spheroidal Satellite Galaxies [PDF]

Astronomical Journal, 2019
We present deep spectroscopy from Keck/DEIMOS of Andromeda I, III, V, VII, and X, all of which are dwarf spheroidal satellites of M31. The sample includes 256 spectroscopic members across all five dSphs.
E. Kirby, K. Gilbert, I. Escala, J. Wojno, P. Guhathakurta, S. Majewski, R. Beaton   +6 more
semanticscholar   +1 more source