Results 81 to 90 of about 4,901,298 (173)

New Methods for Tracking Galaxy and Black Hole Evolution Using Post-Starburst Galaxies

open access: yes, 2017
Galaxies in transition from star-forming to quiescence are a natural laboratory for exploring the processes responsible for this evolution. Using a sample of post-starburst galaxies identified to have recently experienced a recent burst of star formation
French, Katheryn Decker
core   +4 more sources

Dissecting the γ-Ray Emissions of the Nearby Galaxies NGC 1068 and NGC 253

open access: yesThe Astrophysical Journal
Intrigued by recent high-energy study results for nearby galaxies with γ -ray emission and in particular NGC 1068 that has been detected as a neutrino-emitting source by the IceCube Neutrino Observatory, we conduct a detailed analysis of the γ -ray data ...
Shunhao Ji   +4 more
doaj   +1 more source

The Structure Of Post-Starburst Galaxies In The Early Universe

open access: yes, 2017
Despite decades of study, we still do not fully understand why some massive galaxies abruptly switch off their star formation in the early Universe, and what causes their rapid transition to the red sequence. Post-starburst galaxies (PSBs) are key to understanding this transition phase, as they represent systems in which a major burst of star formation
Maltby, David   +2 more
openaire   +2 more sources

Resolving the Nuclear Environments of Tidal Disruption Event Host Galaxies within 45 pc

open access: yesThe Astrophysical Journal
Using Hubble Space Telescope/Space Telescope Imaging Spectrograph observations, we present the highest-spatial-resolution spectroscopic study to date of four tidal disruption event (TDE) host galaxies, with the best observed being the post-starburst host
Megan Newsome   +7 more
doaj   +1 more source

A Multiwavelength Evaluation of AGN in the Post-starburst Phase

open access: yesThe Astrophysical Journal
The quenching of star formation is a crucial phase in galaxy evolution. Although feedback from active galactic nuclei (AGN) has been proposed as a key driver of this transition, the lack of strong AGN in nearby quenching galaxies raises questions about ...
Yuanze Luo   +16 more
doaj   +1 more source

Strong Scatterings Invalidate Proposed Models of Enhanced Tidal Disruption Event Rates in Post-starburst Galaxies

open access: yesThe Astrophysical Journal
Stars wandering too close to supermassive black holes (SMBHs) can be ripped apart by the tidal forces of the black hole. Recent optical surveys have revealed that E+A galaxies are over-represented by a factor of ∼30, while green galaxies are over ...
Odelia Teboul, Hagai B. Perets
doaj   +1 more source

The role of E plus A and post-starburst galaxies - I. Models and model results [PDF]

open access: yes, 2009
Different compositions of galaxy types in the field in comparison to galaxy clusters as described by the morphology-density relation in the local universe are interpreted as a result of transformation processes from late- to early-type galaxies.
Kotulla, R.   +4 more
core   +1 more source

A Catalog of Post-starburst Galaxies from DESI

open access: yesResearch Notes of the AAS
Abstract Post-starburst galaxies are galaxies that are no longer producing stars and have entered or are entering quiescence. These galaxies can be identified with spectral features, for which the Dark Energy Spectroscopic Instrument (DESI) data provides an opportunity to do so at a higher redshift range compared ...
Dharlenny Soto, K. Decker French
openaire   +1 more source

Do Red Galaxies Form More Stars than Blue Galaxies?

open access: yesThe Astrophysical Journal
A new model is proposed in which typical galaxies form most of their stellar mass in a phase with an intrinsically red stellar population. In the standard picture, galaxies with intrinsically red stellar populations are believed to have old stellar ...
Charles L. Steinhardt
doaj   +1 more source

Sparks. II. Panchromatic Spectral Energy Distribution Modeling and Galaxy Physical Properties across the Starburst to Post-starburst Sequence

open access: yesThe Astrophysical Journal
The Sparks survey provides rest-frame near-infrared spectroscopy for 93 local massive galaxies spanning the rapid transition from starburst to post-starburst, including Balmer-strong galaxies as well as systems with active galactic nuclei (AGNs ...
Dalya Baron   +6 more
doaj   +1 more source

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