Results 131 to 140 of about 1,223,277 (388)

A spectroscopic study of the merging dwarf galaxy PGC 007782

Bibechana
We did a detailed spectroscopic study of PGC 007782, an interacting emission type dwarf galaxy. This study utilized the optical spectrum of emission lines to explore the system of interacting dwarf galaxies.
Shankar Timalsina, Daya Nidhi Chhatkuli
doaj   +1 more source

An empirical calibration of star formation rate estimators [PDF]

Monthly Notices of the Royal Astronomical Society, 2002
(Abridged) The observational determination of the behaviour of the star formation rate (SFR) with look-back time or redshift has two main weaknesses: 1- the large uncertainty of the dust/extinction corrections, and 2- that systematic errors may be introduced by the fact that the SFR is estimated using different methods at different redshifts. To assess
Rosa-Gonzalez, D., Terlevich, E., Terlevich, R.   +2 more
openaire   +2 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Equilibrium States of Galactic Atmospheres. I. The Flip Side of Mass Loading

The Astrophysical Journal
This paper presents a new framework for understanding the relationship between a galaxy and its circumgalactic medium (CGM). It focuses on how imbalances between heating and cooling cause either expansion or contraction of the CGM.
G. Mark Voit, Viraj Pandya, Drummond B. Fielding, Greg L. Bryan, Christopher Carr, Megan Donahue, Benjamin D. Oppenheimer, Rachel S. Somerville   +7 more
doaj   +1 more source

Searching for Conformity Across Cosmic Time with Local Group and Local Volume Star Formation Histories

The Astrophysical Journal, 2023
Conformity denotes the correlation of properties between pairs of galaxies as a function of separation. Correlations between properties such as the star formation rate (SFR), stellar mass, and specific star formation rate (sSFR) have implications for the
Charlotte Olsen, Eric Gawiser
doaj   +1 more source

Energizing Star Formation: The Cosmic-Ray Ionization Rate in NGC 253 Derived from ALCHEMI Measurements of H₃O⁺ and SO [PDF]

, 2022
Jonathan Holdship, Jeffrey G. Mangum, Serena Viti, Erica Behrens, Nanase Harada, Sergio Martín, Kazushi Sakamoto, Sebastien Muller, Kunihiko Tanaka, Kouichiro Nakanishi, Rubén Herrero-Illana, Yuki Yoshimura, Rebeca Aladro, Laura Colzi, Kimberly L. Emig, Christian Henkel, Yuri Nishimura, Víctor M. Rivilla, Paul P. van der Werf   +18 more
openalex   +1 more source

The Star Formation History of NGC 1705: a Post-Starburst Galaxy on the Verge of Activity

, 2003
We infer the star formation history in different regions of the blue compact dwarf NGC 1705 by comparing synthetic color-magnitude diagrams with HST optical and near-infrared photometry.
A. Aloisi, Claus Leitherer, F. Annibali, Fagotto F., Fagotto F., L. Greggio, Lisenfeld U., M. Tosi, Melnick J., Schulte-Ladbeck R. E.   +9 more
core   +1 more source

GAS REGULATION OF GALAXIES: THE EVOLUTION OF THE COSMIC SPECIFIC STAR FORMATION RATE, THE METALLICITY–MASS–STAR-FORMATION RATE RELATION, AND THE STELLAR CONTENT OF HALOS [PDF]

, 2013
A very simple physical model of galaxies is one in which the formation of stars is instantaneously regulated by the mass of gas in a reservoir with mass loss scaling with the star-formation rate (SFR). This model links together three different aspects of
S. Lilly, C. Carollo, A. Pipino, A. Renzini, Yingjie Peng   +4 more
semanticscholar   +1 more source

Galactic Star Formation Rates

, 2019
The interstellar medium (ISM) is the heart of the cosmic evolution, where the cosmic baryonic cycle ends with star formation and begins again by stellar feedback. Therefore, star formation rates (SFRs) are a critical property to understand galaxy formation and evolution.
openaire   +1 more source

Dust Properties and Star Formation Rates in Star‐Forming Dwarf Galaxies

The Astrophysical Journal, 2008
25 pages, 11 figures, 4 tables, ApJ ...
Rosenberg, Jessica L., Wu, Yanling, Le Floc'H, Emeric, Charmandaris, Vassilis, Ashby, Matthew L. N., Houck, J. R., Salzer, John J., Willner, S. P.   +7 more
openaire   +3 more sources