Results 111 to 120 of about 954,000 (309)

The Gas-phase Mass–Metallicity Relation for Massive Galaxies at z ∼ 0.7 with the LEGA-C Survey

The Astrophysical Journal
The massive end of the gas-phase mass–metallicity relation (MZR) is a sensitive probe of active galactic nuclei (AGN) feedback that is a crucial but highly uncertain component of galaxy evolution models.
Zach J. Lewis, Brett H. Andrews, Rachel Bezanson, Michael Maseda, Eric F. Bell, Romeel Davé, Francesco D’Eugenio, Marijn Franx, Anna Gallazzi, Anna de Graaff, Yasha Kaushal, Angelos Nersesian, Jeffrey A. Newman, Arjen van der Wel, Po-Feng Wu   +14 more
doaj   +1 more source

Planetary nebulae in M33: probes of AGB nucleosynthesis and ISM abundances

, 2010
We have obtained deep optical spectrophotometry of 16 planetary nebulae in M33, mostly located in the central two kpc of the galaxy, with the Subaru and Keck telescopes.
Aggarwal, Akritas, Asplund, Bonanos, Boulesteix, Bresolin, Charbonnel, Ciardullo, Cristallo, Crockett, De Robertis, E. Rosolowsky, Esteban, F. Bresolin, Freedman, Froese Fischer, Froese Fischer, G. Stasińska, Galavis, Garnett, Górny, Haffner, Henry, Henry, Howard, Hudson, Hummer, Hunter, Hunter, Izotov, J. D. Simon, J. M. Vílchez, Kashikawa, Kaufman, Kennicutt, Kingsburgh, Kniazev, Kwitter, Leisy, Leisy, Lodders, Maciel, Maeder, Magrini, Magrini, Magrini, Magrini, Marigo, Marigo, Marigo, Massey, Massey, McLaughlin, Mendoza, Oke, Peimbert, Peña, Porter, Prantzos, Press, Pérez-Montero, Ramsbottom, Richer, Richer, Richer, Rosolowsky, Rubin, Scowcroft, Seaton, Shaw, Stanghellini, Stasińska, Stasińska, Stasińska, Tayal, Tayal, Torres-Peimbert, U, Urbaneja, van Dokkum, Vílchez, Wang, Willner   +82 more
core   +2 more sources

Iron abundances and heating of the intracluster medium in hydrodynamical simulations of galaxy clusters [PDF]

, 2002
Results from a large set of hydrodynamical smoothed particle hydrodynamics (SPH) simulations of galaxy clusters in a flat ΛCDM cosmology are used to investigate the metal enrichment and heating of the intracluster medium (ICM).
R. Valdarnini
semanticscholar   +1 more source

Saving Bambi from the mower? Using a drone with thermal camera to evaluate a low‐tech scaring technique to reduce roe deer fawn mortality during grass harvest

Wildlife Biology, EarlyView.
Roe deer is a species that hides their neonates as an anti‐predator strategy. This may prove efficient against mammalian predators, such as the red fox; however, it might be an ecological trap as large numbers of fawns are killed by tractors with harvesters each year during grass harvest.
Thomas Vogler, Neri H Thorsen, Simen Pedersen   +2 more
wiley   +1 more source

Exploring the Evolution of Massive Clumps in Simulations That Reproduce the Observed Milky Way α-element Abundance Bimodality

The Astrophysical Journal, 2023
The Milky Way (MW) stellar disk has both a thin and a thick component. The thin disk is composed mostly of younger stars (≲8 Gyr) with a lower abundance of α -elements, while the thick disk contains predominantly older stars (≳8–12 Gyr) with a higher α ...
Bethany R. Garver, David L. Nidever, Victor P. Debattista, Leandro Beraldo e Silva, Tigran Khachaturyants   +4 more
doaj   +1 more source

XMM-Newton and Chandra Observations of the Galaxy Group NGC 5044. II. Metal Abundances and Supernova Fraction [PDF]

, 2003
Using new XMM and Chandra observations, we present an analysis of the metal abundances of the hot gas within a radius of 100 kpc of the bright nearby galaxy group NGC 5044.
D. Buote, A. Lewis, F. Brighenti, W. Mathews   +3 more
semanticscholar   +1 more source

‘FROM GHETTO TO HABITUS FACTORY’ ROMA CAMPS IN ITALY: An Empirical Extension of Loïc Wacquant's Theorization

International Journal of Urban and Regional Research, EarlyView.
Abstract In this article we apply Wacquant's conceptualization of the ghetto to an analysis of interviews conducted with Roma people living in the state‐enforced camps of Turin, Italy. We illustrate how the elements characterizing a ghetto according to Wacquant (i.e.
Vincenzo Romania, Tommaso Bertazzo
wiley   +1 more source

Abundant molecular gas in tidal dwarf galaxies: On-going galaxy formation [PDF]

Astronomy & Astrophysics, 2001
[Abridged...] We investigate the process of galaxy formation as can be observed in the only currently forming galaxies -- the so-called Tidal Dwarf Galaxies, hereafter TDGs -- through observations of the molecular gas detected via its CO emission. These objects are formed of material torn off of the outer parts of a spiral disk due to tidal forces in a
Braine, J., Duc, P. -A., Lisenfeld, U., Charmandaris, V., Vallejo, O., Leon, S., Brinks, E.   +6 more
openaire   +2 more sources

The Impact of Initial Composition on Massive Star Evolution and Nucleosynthesis

The Astrophysical Journal
We study the sensitivity of presupernova evolution and supernova nucleosynthesis yields of massive stars to variations of the initial composition. We use the solar abundances from Lodders, and compute two different sets of initial stellar compositions ...
Christopher West, Alexander Heger, Benoit Côté, Lev Serxner, Haoxuan Sun   +4 more
doaj   +1 more source

HII Regions And the Protosolar Helium, Carbon, and Oxygen Abundances in the Context of Galactic Chemical Evolution [PDF]

, 2011
We present chemical evolution models of the Galactic disk with different Z-dependent yields. We find that a moderate mass loss rate for massive stars of solar metallicity produces an excellent fit to the observed C/H and C/O gradients of the Galactic ...
Carigi, Leticia, Peimbert, Manuel
core