Results 71 to 80 of about 210,874 (237)

The High-Redshift Gas-Phase Mass–Metallicity Relation in FIRE-2

The Astrophysical Journal Letters
The unprecedented infrared spectroscopic capabilities of JWST have provided high-quality interstellar medium metallicity measurements and enabled characterization of the gas-phase mass–metallicity relation (MZR) for galaxies at z ≳ 5 for the first time ...
Andrew Marszewski, Guochao Sun, Claude-André Faucher-Giguère, Christopher C. Hayward, Robert Feldmann   +4 more
doaj   +1 more source

New and updated stellar parameters for 90 transit hosts. The effect of the surface gravity

, 2013
Context. Precise stellar parameters are crucial in exoplanet research for correctly determining of the planetary parameters. For stars hosting a transiting planet, determining of the planetary mass and radius depends on the stellar mass and radius, which
Adibekyan, V. Zh., Fernandes, J. M., Israelian, G., Mena, E. Delgado, Montalto, M., Mortier, A., Santos, N. C., Sousa, S. G.   +7 more
core   +1 more source

Chemical Abundances in SFG and DLA

, 2005
We investigate the chemical abundances of local star-forming galaxies which cause Damped Lyman Alpha lines. A metallicity versus redshift diagram is constructed, on which the chemical abundances of low-redshift star-forming galaxy populations are compared with those of high-redshift Damped Lyman Alpha systems.
Schulte-Ladbeck, Regina E., König, Brigitte, Cherinka, Brian   +2 more
openaire   +2 more sources

Chemical Abundances and Milky Way Formation [PDF]

, 2006
to be published in the proceedings of the ESO/Arcetri-workshop on "Chemical Abundances and Mixing in Stars", 13.-17. Sep. 2004, Castiglione della Pescaia, Italy, L. Pasquini, S. Randich (eds.)
G. F. Gilmore, Rosemary F. G. Wyse
openaire   +3 more sources

Chemical Abundances of the Leo II Dwarf Galaxy

, 2008
We use previously-published moderate-resolution spectra in combination with stellar atmosphere models to derive the first measured chemical abundance ratios in the Leo II dSph galaxy.
Azzopardi, Chou, Cohen, Coleman, David O. Cook, Demers, Dolphin, Dotter, Fulbright, Fulbright, Gratton, Helmi, Hinkle, Ivans, Koch, Koch, Koch, Lee, Majewski, Majewski, Marin-Franch, Matthew D. Shetrone, Michael H. Siegel, Milone, Palma, Piotto, Pritzl, Ramírez, Ramírez, Shetrone, Shetrone, Shetrone, Siegel, Siegel, Siegel, Simon, Sneden, Sohn, Sollima, Swope, Tammy Bosler, Thévenin, Tolstoy, Venn, Walker   +44 more
core   +1 more source

THE CHEMICAL ABUNDANCES OF ATMOSPHERES OF K GIANT STARS

Odessa Astronomical Publications, 2017
The abundances of 18 cool giant stars in Vicinity of Sun have been determinated. This determination was made by using the method of model atmospheres. It should be noted that almost all elements show discrepancies in abundances determined for absorption ...
N. S. Komarov, N. Yu. Basak, T. I. Gorbaneva, L. E. Kantsen   +3 more
doaj   +1 more source

Chemical Abundances in Globular Clusters [PDF]

Proceedings of XII International Symposium on Nuclei in the Cosmos — PoS(NIC XII), 2013
The Milky Way globular clusters are ideal laboratories for testing the predictions of nuclear astrophysics. Driven by Hubble Space Telescope photometry and high-resolution multi-object spectrographs on 8m-class telescopes, the study of chemical abundances in globular clusters is a vibrant area of astronomical research.
openaire   +2 more sources

The building up of the disk galaxy M33 and the evolution of the metallicity gradient

, 2007
The evolution of radial gradients of metallicity in disk galaxies and its relation with the disk formation are not well understood. Theoretical models of galactic chemical evolution make contrasting predictions about the time evolution of metallicity ...
Aller, Arnett, Aubert, Beaulieu, Block, Block, Brooks, Bullock, Chabrier, Chang, Chiappini, Chiappini, Chiappini, Chieffi, Ciardullo, Ciardullo, Corbelli, Corbelli, Crockett, D. Galli, Davidge, de Boer, Devereux, Diaz, E. Corbelli, Elmegreen, Engargiola, Ferrini, Ferrini, Ferrini, Ferrini, Freedman, Freeman, Friel, Gallagher, Galletti, Garnett, Gavilán, Goetz, Henry, Henry, Henry, Herrero, Herwig, Heyer, Hippelein, Hirschi, Holmberg, Hoopes, Hou, Israel, Kennicutt, Kennicutt, Kennicutt, Keres, Kim, Koeppen, Kroupa, Kroupa, Kwitter, L. Magrini, Maciel, Maciel, Maciel, Maciel, Magrini, Magrini, Magrini, Marigo, McCarthy, McConnachie, Mollà, Mollà, Mollà, Monteverde, Monteverde, Naab, Newton, Portinari, Portinari, Regan, Richer, Romano, Rowe, Salpeter, Sandage, Scalo, Scalo, Smith, Stanghellini, Stephens, Talbot, Thielemann, Tiede, Tinsley, Tosi, Urbaneja, Venn, Vílchez, Wakker, Westmeier, Willner, Woosley, Wyse, Young   +104 more
core   +1 more source

Chemical Abundances and the Hierarchical Clustering

, 2003
to appear in Recycling intergalactic and intersetellar matter, IAUSS Vol 217 ...
Tissera, Patricia B., Lambas, Diego G.
openaire   +2 more sources

The connection between the Galactic halo and ancient Dwarf Satellites

, 2017
We explore the hypothesis that the classical and ultra-faint dwarf spheroidal satellites of the Milky Way have been the building blocks of the Galactic halo by comparing their [O/Fe] and [Ba/Fe] versus [Fe/H] patterns with the ones observed in Galactic ...
Matteucci, F., Romano, D., Spitoni, E., Vincenzo, F.   +3 more
core   +1 more source