Results 31 to 40 of about 7,914 (245)

The galaxy clustering crisis in abundance matching [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
Abstract Galaxy clustering on small scales is significantly underpredicted by sub-halo abundance matching (SHAM) models that populate (sub-)haloes with galaxies based on peak halo mass, Mpeak. SHAM models based on the peak maximum circular velocity, Vpeak, have had much better success.
Duncan Campbell, Frank C van den Bosch, Nikhil Padmanabhan, Yao-Yuan Mao, Andrew R Zentner, Johannes U Lange, Fangzhou Jiang, Antonia Sierra Villarreal   +7 more
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Chemical abundances in Seyfert galaxies – X. Sulphur abundance estimates

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT For the first time, the sulphur abundance relative to hydrogen (S/H) in the narrow-line regions of a sample of Seyfert 2 nuclei (Sy 2s) has been derived via direct estimation of the electron temperature. Narrow emission-line intensities from the Sloan Digital Sky Survey (SDSS) Data Release 17 (DR17) [in the wavelength range 3000
Oli L Dors, M Valerdi, R A Riffel, R Riffel, M V Cardaci, G F Hägele, Mark Armah, M Revalski, S R Flury, P Freitas-Lemes, E B Amôres, A C Krabbe, L Binette, A Feltre, T Storchi-Bergmann   +14 more
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The LEGARE Project

Astronomy & Astrophysics
Context. The nuclear stellar disc (NSD) of the Milky Way is a dense, rotating stellar system in the central ~200 pc. The NSD is thought to be primarily fuelled by bar-driven gas inflows from the inner Galactic disc. Aims.
Spitoni E., Schultheis M., Matteucci F., Ryde N., Cescutti G., Saro A., Sormani M. C., Thorsbro B.   +7 more
doaj   +1 more source

CUMULATIVE OXYGEN ABUNDANCES OF SPIRAL GALAXIES [PDF]

The Astrophysical Journal, 2012
14 pages, 7 figures, 5 ...
Dack, Stuart, McCall, Marshall L.
openaire   +2 more sources

The Chemodynamics of the Stellar Populations in M31 from APOGEE Integrated-light Spectroscopy

The Astrophysical Journal, 2023
We present an analysis of nearly 1000 near-infrared, integrated-light spectra from APOGEE in the inner ∼7 kpc of M31. We utilize full-spectrum fitting with A-LIST simple stellar population spectral templates that represent a population of stars with the ...
Benjamin J. Gibson, Gail Zasowski, Anil Seth, Aishwarya Ashok, Kameron Goold, Tobin Wainer, Sten Hasselquist, Jon Holtzman, Julie Imig, Dmitry Bizyaev, Steven R. Majewski   +10 more
doaj   +1 more source

Element Abundances In Nearby Galaxies [PDF]

, 2004
In these lectures I present a highly opinionated review of the observed patterns of metallicity and element abundance ratios in nearby spiral, irregular, and dwarf elliptical galaxies, with connection to a number of astrophysical issues associated with chemical evolution.
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COMPLETE ELEMENT ABUNDANCES OF NINE STARS IN THE r-PROCESS GALAXY RETICULUM II [PDF]

, 2016
We present chemical abundances derived from high-resolution Magellan/Magellan Inamori Kyocera Echelle spectra of the nine brightest known red giant members of the ultra-faint dwarf galaxy Reticulum II (Ret II). These stars span the full metallicity range
Ji, Alexander Pung, Chiti, Anirudh, Frebel, Anna L., Simon, Joshua D.   +3 more
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OXYGEN ABUNDANCE MEASUREMENTS OF SHIELD GALAXIES [PDF]

The Astrophysical Journal, 2015
Astrophysical Journal, in ...
Haurberg, Nathalie C., Salzer, John J., Cannon, John M., Marshall, Melissa V.   +3 more
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Abundances in 78 metal-rich bulge spheroid stars from APOGEE

Astronomy & Astrophysics
Context. The inner Galaxy is the most complex region of the Milky Way, comprising the early bulge, inner thin and thick discs, and inner halo stars; moreover, the formation of the bar caused transfer of gas and stars from the disc to the inner Galaxy ...
Ernandes H., Barbuy B., Chiappini C., Feltzing S., Pérez-Villegas A., Friaça A. C. S., Souza S. O., Nunes R. P., Queiroz A. B. A., Fernández-Trincado J. G., Rocha de Abreu A. L., Plotnikova A.   +11 more
doaj   +1 more source

Mapping metallicity variations across nearby galaxy disks

, 2019
The distribution of metals within a galaxy traces the baryon cycle and the buildup of galactic disks, but the detailed gas phase metallicity distribution remains poorly sampled.
McElroy, R., Blanc, G.~A., Leroy, A.~K., Kruijssen, J. M. D., Chevance, M., Schruba, A., Glover, S.~C.~O., Ho, I.-T, Meidt, S., Faesi, C., Pety, J., Sanchez-Blazquez, P., Grasha, K., Congiu, E., Saito, T., van der Wel, Sharon Meidt, Kruijssen, J., Meidt, S. E., Kruijssen, J.~M.~D., Groves, B., Schinnerer, E., Santoro, F., Leroy, A. K., Blanc, G. A., Rosolowsky, E., Kreckel, K., Sandstrom, K., Lang, P., Bigiel, F., Glover, S. C. O., Ho, I., Leroy, A. K., Leroy, A., Emsellem, E., Meidt, Sharon, Blanc, G., Glover, S., Ho, I. -T.   +37 more
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