Results 51 to 60 of about 1,069,925 (330)

EXTRAGALACTIC CHEMICAL ABUNDANCES: DO H ii REGIONS AND YOUNG STARS TELL THE SAME STORY? THE CASE OF THE SPIRAL GALAXY NGC 300 [PDF]

, 2009
We have obtained new spectrophotometric data for 28 H ii regions in the spiral galaxy NGC 300, a member of the nearby Sculptor Group. The detection of several auroral lines, including [O iii] λ4363, [S iii] λ6312, and [N ii] λ5755, has allowed us to ...
F. Bresolin, W. Gieren, R. Kudritzki, G. Pietrzyński, M. Urbaneja, G. Carraro   +5 more
semanticscholar   +1 more source

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

An X-ray Mini-survey of Nearby Edge-on Starburst Galaxies II. The Question of Metal Abundance [PDF]

, 1999
(abbreviated) We have undertaken an X-ray survey of a far-infrared flux limited sample of seven nearby edge-on starburst galaxies. Here, we examine the two X-ray-brightest sample members NGC 253 and M 82 in a self-consistent manner, taking account of the
Arnaud M., Cappi M., Combes F., Elbaz D., Gibson B., Kimberly A. Weaver, Matteucci F., Mewe R., Mewe R., Michael Dahlem, Strickland D. K., Timothy M. Heckman, Tsuru T., Vogler A., Weliachew L., Wiebe D. S.   +15 more
core   +2 more sources

Globular cluster formation and evolution in the context of cosmological galaxy assembly: open questions [PDF]

Proceedings of the Royal Society A, 2018
We discuss some of the key open questions regarding the formation and evolution of globular clusters (GCs) during galaxy formation and assembly within a cosmological framework.
D. Forbes, N. Bastian, M. Gieles, R. Crain, J. Kruijssen, S. Larsen, S. Ploeckinger, O. Agertz, M. Trenti, A. Ferguson, J. Pfeffer, O. Gnedin   +11 more
semanticscholar   +1 more source

Multi-Element Abundance Measurements from Medium-Resolution Spectra. II. Catalog of Stars in Milky Way Dwarf Satellite Galaxies [PDF]

, 2010
We present a catalog of Fe, Mg, Si, Ca, and Ti abundances for 2961 red giant stars that are likely members of eight dwarf satellite galaxies of the Milky Way (MW): Sculptor, Fornax, Leo I, Sextans, Leo II, Canes Venatici I, Ursa Minor, and Draco. For the
Adelman-McCarthy, An, Bell, Bell, Bellazzini, Bellazzini, Binney, Carretta, Castelli, Castelli, Chonis, Christopher Sneden, Clem, Cohen, Cohen, Cohen, Cohen, Cohen, Cohen, Cohen, Cohen, Constance M. Rockosi, Da Costa, Demarque, Evan N. Kirby, Ferraro, Font, Frebel, Fulbright, Fulbright, Geisler, Gratton, Gray, Guhathakurta, Gustafsson, Gustafsson, Irwin, Ivans, Johnson, Joshua D. Simon, Judith G. Cohen, Kirby, Kirby, Kirby, Kirby, Kirby, Koch, Kuehn, Kurucz, Kurucz, Lai, Lai, Lee, Majewski, Majewski, Markwardt, Marla C. Geha, Martin, Michael Siegel, Mighell, Norris, Pietrzyński, Pritzl, Puragra Guhathakurta, Ramírez, Ramírez, Robertson, Roederer, Sadakane, Sangmo Tony Sohn, Sbordone, Sbordone, Schlegel, Shetrone, Shetrone, Shetrone, Shetrone, Siegel, Siegel, Simon, Simon, Sneden, Sneden, Sneden, Sohn, Spite, Steven R. Majewski, Thévenin, Venn, Webbink, Westfall, White, Zacharias, Zucker   +93 more
core   +3 more sources

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

The Ital-FLAMES survey of the Sagittarius dwarf spheroidal galaxy - I. Chemical abundances of bright RGB stars [PDF]

, 2005
We present iron and α element (Mg, Ca, Ti) abundances for a sample of 15 Red Giant Branch stars belonging to the main body of the Sagittarius dwarf Spheroidal galaxy.
L. Monaco, M. Bellazzini, P. Bonifacio, F. Ferraro, G. Marconi, E. Pancino, L. Sbordone, S. Z. INAF-OAT, Trieste, Italy INAF-OAB, Bologna, I. Bologna, I. E. G. Observatory, Santiago, Chile INAF-OAR, Roma, Italy Infn Magic Group Infn Roma Tor Vergata, Italy.   +17 more
semanticscholar   +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.
openaire   +2 more sources

Photometric Objects Around Cosmic Webs (PAC) Delineated in a Spectroscopic Survey. IV. High-precision Constraints on the Evolution of the Stellar–Halo Mass Relation at Redshift z < 0.7

The Astrophysical Journal, 2023
Taking advantage of the Photometric objects Around Cosmic webs method developed in Paper I, we measure the excess surface density ${\bar{n}}_{2}{w}_{{\rm{p}}}$ of the photometric objects around spectroscopic objects down to stellar masses 10 ^8.0 M _ ...
Kun Xu, Y. P. Jing, Yun Zheng, Hongyu Gao   +3 more
doaj   +1 more source

Images, Structural Properties, and Metal Abundances of Galaxy Clusters Observed with Chandra ACIS-I at 0.1 < z < 1.3 [PDF]

, 2007
We have assembled a sample of 115 galaxy clusters at 0.1 < z < 1.3 with archived Chandra ACIS-I observations. We present X-ray images of the clusters and make available region files containing contours of the smoothed X-ray emission.
B. Maughan, C. Jones, W. Forman, L. V. Speybroeck   +3 more
semanticscholar   +1 more source