Results 141 to 150 of about 195,665 (278)

Chemical Evolution of Damped Lyα Galaxies: The [S/Zn] Abundance Ratio at Redshift ≥2 [PDF]

, 2000
Miriam Centurión, P. Bonifacio, P. Molaro, G. Vladilo   +3 more
openalex   +1 more source

The Mass Surface Density in the Local Disk and the Chemical Evolution of the Galaxy [PDF]

, 2000
D. Romano, F. Matteuccí, P. Salucci, C. Chiappini   +3 more
openalex   +1 more source

Evidence of Truly Young High-α Dwarf Stars

The Astronomical Journal
The existence of high- α stars with inferred ages
Yuxi(Lucy) Lu, Isabel L. Colman, Maryum Sayeed, Louis Amard, Sven Buder, Catherine Manea, Soichiro Hattori, Marc H. Pinsonneault, Adrian M. Price-Whelan, Megan Bedell, David Nidever, Jennifer A. Johnson, Melissa Ness, Ruth Angus, Zachary R. Claytor, Danny Horta, Aida Behmard   +16 more
doaj   +1 more source

Phosphorus-bearing molecules PO and PN at the edge of the Galaxy. [PDF]

Nature, 2023
Koelemay LA, Gold KR, Ziurys LM.
europepmc   +1 more source

Chemical Evolution of Galaxies and Quasar Metallicities

, 1993
F. Matteuccí, P. Padovani
openalex   +1 more source

The Influence of Nova Nucleosynthesis on the Chemical Evolution of the Galaxy [PDF]

, 2000
D. Romano, F. Matteuccí
openalex   +1 more source

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

Chemical evolution of irregular galaxies and the primordial He-4 abundance

, 1993
Grant J. Mathews, R. N. Boyd, George M. Fuller   +2 more
openalex   +1 more source

Quantifying Bursty Star Formation in Dwarf Galaxies

The Open Journal of Astrophysics
Dwarf galaxy star formation histories are theoretically expected to be bursty, potentially leaving distinct imprints on their chemical evolution. We propose that episodic starbursts with quiescent periods longer than ~100 Myr should lead to discontinuous
Yuan-Sen Ting, Alexander Ji
doaj   +1 more source

Unveiling Galaxy Chemical Enrichment Mechanisms Out to z ∼ 8 from Direct Determination of O and Ar Abundances from JWST/NIRSPEC Spectroscopy

The Astrophysical Journal Letters
Galaxy chemical enrichment mechanisms have primarily been constrained by [ α /Fe] and [Fe/H] measurements of individual stars and integrated light from stellar populations. However, such measurements are limited at higher redshifts ( z  > 1).
Souradeep Bhattacharya, Magda Arnaboldi, Ortwin Gerhard, Chiaki Kobayashi, Kanak Saha   +4 more
doaj   +1 more source