Results 21 to 30 of about 11,157 (237)

Evolution of the Mass–Metallicity Relation from Redshift z ≈ 8 to the Local Universe

The Astrophysical Journal, 2023
A tight positive correlation between the stellar mass and the gas-phase metallicity of galaxies has been observed at low redshifts. The redshift evolution of this correlation can strongly constrain theories of galaxy evolution.
Danial Langeroodi, Jens Hjorth, Wenlei Chen, Patrick L. Kelly, Hayley Williams, Yu-Heng Lin, Claudia Scarlata, Adi Zitrin, Tom Broadhurst, Jose M. Diego, Xiaosheng Huang, Alexei V. Filippenko, Ryan J. Foley, Saurabh Jha, Anton M. Koekemoer, Masamune Oguri, Ismael Perez-Fournon, Justin Pierel, Frederick Poidevin, Lou Strolger   +19 more
doaj   +1 more source

EVOLUTION OF [O III] λ5007 EMISSION-LINE PROFILES IN NARROW EMISSION-LINE GALAXIES [PDF]

The Astrophysical Journal, 2011
33 pages, 8 figures, and 5 tables, to be published in ...
Wang, J., Mao, Y. F., Wei, J. Y.
openaire   +2 more sources

Galaxy Evolution in a Pilot Survey up to z=1 and CDM Halos

Advances in Astronomy, 2011
We study spectral evolution of galaxies in a magnitude limited sample of 550 galaxies from z=1 down to z=0.3 on a pencil beam of ≈10′×10′. We concentrate on the large apparent cosmological structures along the line of sight, and we bin our individual ...
E. Giraud, J. Melnick, Q.-S. Gu, H. Quintana, F. Selman, I. Toledo, P. Zelaya   +6 more
doaj   +1 more source

The emission line galaxy TV Reticuli [PDF]

Astronomy & Astrophysics, 2006
TV Ret was classified as a cataclysmic variable due to an outburst observed in 1977. We intended to confirm this classification and derive some basic properties of the system. Low resolution optical spectra were obtained for a spectral classification of the object. We find that the object is not a cataclysmic variable but an emission line galaxy with a
Schmidtobreick, L., Tappert, C., Horst, H., Saviane, I., Lidman, C.   +4 more
openaire   +2 more sources

Planetary Nebulae and the Ionization of the Interstellar Medium in Galaxies

Frontiers in Astronomy and Space Sciences, 2022
We discuss the role of planetary nebulae and their progeny in galaxy context in terms of ionization of the galaxy interstellar medium. This regards ionized gas outside the disk of spiral galaxies, the diffuse ionized medium in spiral galaxies, and the ...
Grażyna Stasińska, Marina Trevisan, Natalia Vale Asari   +2 more
doaj   +1 more source

Line-strength indices and velocity dispersions for 148 early-type galaxies in different environments [PDF]

, 2002
We have derived high quality line-strength indices and velocity dispersions for a sample of 148 early-type galaxies in different environments. The wavelength region covered by the observations ($\lambda \simeq 4600$ to 6600 Å) includes the Lick/IDS ...
R. Bender, Beuing, J., Bender, R., C. Mendes de Oliveira, D. Thomas, J. Beuing, de Oliveira, C. M., Thomas, D., Maraston, C., C. Maraston   +9 more
core   +1 more source

Shards of SHARDS: emission line galaxies [PDF]

Proceedings of the International Astronomical Union, 2012
AbstractSHARDS (Survey for High-z Absorption Red & Dead Sources; see Pérez-González et al. 2012) is an optical ultra-deep spectro-photometric survey with OSIRIS-GTC aimed at selecting and studying massive passively evolving galaxies at z=1.0–2.3 in GOODS-North.
Antonio Cava, Víctor Villar, Pablo G. Pérez-González   +2 more
openaire   +1 more source

The Physical Conditions of Emission-line Galaxies at Cosmic Dawn from JWST/NIRSpec Spectroscopy in the SMACS 0723 Early Release Observations

The Astrophysical Journal, 2023
We present rest-frame optical emission-line flux ratio measurements for five z > 5 galaxies observed by the James Webb Space Telescope Near-Infared Spectrograph (NIRSpec) in the SMACS 0723 Early Release Observations.
Jonathan R. Trump, Pablo Arrabal Haro, Raymond C. Simons, Bren E. Backhaus, Ricardo O. Amorín, Mark Dickinson, Vital Fernández, Casey Papovich, David C. Nicholls, Lisa J. Kewley, Samantha W. Brunker, John J. Salzer, Stephen M. Wilkins, Omar Almaini, Micaela B. Bagley, Danielle A. Berg, Rachana Bhatawdekar, Laura Bisigello, Véronique Buat, Denis Burgarella, Antonello Calabrò, Caitlin M. Casey, Laure Ciesla, Nikko J. Cleri, Justin W. Cole, M. C. Cooper, Asantha R. Cooray, Luca Costantin, Darren Croton, Henry C. Ferguson, Steven L. Finkelstein, Seiji Fujimoto, Jonathan P. Gardner, Eric Gawiser, Mauro Giavalisco, Andrea Grazian, Norman A. Grogin, Nimish P. Hathi, Michaela Hirschmann, Benne W. Holwerda, Marc Huertas-Company, Taylor A. Hutchison, Shardha Jogee, Stéphanie Juneau, Intae Jung, Jeyhan S. Kartaltepe, Allison Kirkpatrick, Dale D. Kocevski, Anton M. Koekemoer, Jennifer M. Lotz, Ray A. Lucas, Benjamin Magnelli, Jasleen Matharu, Pablo G. Pérez-González, Nor Pirzkal, Marc Rafelski, Caitlin Rose, Lise-Marie Seillé, Rachel S. Somerville, Amber N. Straughn, Sandro Tacchella, Brittany N. Vanderhoof, Benjamin J. Weiner, Stijn Wuyts, L. Y. Aaron Yung, Jorge A. Zavala   +65 more
doaj   +1 more source

Emission-Line Diagnostics for Galaxies [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractI will give an overview of the emission-line diagnostics used for star-forming galaxies. I will review the UV, optical, and IR diagnostics that can be used to yield information about the ISM conditions, star-formation properties, and power sources in GRB hosts, both globally, and with spatially-resolved data.
openaire   +1 more source

Evolution of Emission Line Galaxies [PDF]

Publications of the Astronomical Society of the Pacific, 1995
This thesis compares two samples of emission line galaxies, selected on the basis of the strength of their O III and/or H-beta emission lines. The distant sample has been drawn from the 4-Shooter transit survey undertaken by Schmidt, Schneider and Gunn (1994, AJ, 107, 1245 and references therein), and consists of 370 galaxies with emission line ...
openaire   +1 more source