Results 131 to 140 of about 113,123 (219)

ABSTRACTS

open access: yes
Precision Radiation Oncology, EarlyView.
wiley   +1 more source

Shining a Light on the Connections between Galactic Outflows Seen in Absorption and Emission Lines

open access: yesThe Astrophysical Journal
Galactic outflows provide important feedback effects to regulate the evolution of host galaxies. Two primary diagnostics of outflows are broad and/or blueshifted emission and absorption lines.
Xinfeng Xu   +16 more
doaj   +1 more source

Stellar- and AGN-driven Outflows in JWST Galaxies at z = 3–9: More Frequent, Wider Opening Angles, and Mostly Bounded

open access: yesThe Astrophysical Journal
We study outflows in 130 galaxies with −22 
Yi Xu   +7 more
doaj   +1 more source

CEERS Key Paper. VIII. Emission-line Ratios from NIRSpec and NIRCam Wide-Field Slitless Spectroscopy at z > 2

open access: yesThe Astrophysical Journal
We  use James Webb Space Telescope Near-Infrared Camera Wide Field Slitless Spectroscopy (NIRCam WFSS) and the Near-Infrared spectrograph (NIRSpec) in the Cosmic Evolution Early Release survey to measure rest-frame optical emission-line ratios of 155 ...
Bren E. Backhaus   +39 more
doaj   +1 more source

Lyα Nebulae in HETDEX: The Largest Statistical Census Bridging Lyα Halos and Blobs across Cosmic Noon

open access: yesThe Astrophysical Journal
The Hobby–Eberly Dark Energy Experiment (HETDEX) is an untargeted ∼540 deg ^2 spectroscopic survey of Ly α emission in the 1.9 
Erin Mentuch Cooper   +22 more
doaj   +1 more source

Exploring the Link between Extreme Coronal Line Emitters and Tidal Disruption Events

open access: yesThe Astrophysical Journal
Galaxies with minimal or no activity from their nucleus can still exhibit significant coronal line (CL) emission, often exceeding the strength of typical narrow emission lines. Many of these CLs require ionization potentials of ≥100 eV, implying the need
Weiyu Ding   +6 more
doaj   +1 more source

DESI Spectroscopy of HETDEX Emission-line Candidates. I. Line Discrimination Validation

open access: yesThe Astrophysical Journal
The Hobby–Eberly Dark Energy Experiment (HETDEX) is an untargeted spectroscopic galaxy survey that uses Ly α- emitting galaxies (LAEs) as tracers of 1.9 < z < 3.5 large-scale structure. Most detections consist of a single emission line, whose identity is
Martin Landriau   +52 more
doaj   +1 more source

A [C ii] 158 μm Survey of Damped Lyα Absorber Galaxies at z ∼ 4: Observations of Dense and Metal-enriched Neutral Gas within the Circumgalactic Medium of Star-forming Galaxies

open access: yesThe Astrophysical Journal
We present a survey undertaken with the Atacama Large Millimeter/submillimeter Array (ALMA) to study the galaxies associated with a representative sample of 16 damped Ly α absorbers (DLAs) at z  ≈ 4.1–4.5, using the [C ii ] 158 μ m ([C ii ]) line.
Marcel Neeleman   +4 more
doaj   +1 more source

Integral Field Spectroscopy of Galaxy Emission Line Haloes

open access: yes, 2009
We summarise recent results from two programmes of integral field spectroscopy (IFS) on galaxy emission line haloes. Firstly, we present SAURON IFS of the 100 kpc-scale diffuse Lyα-emitting blobs in the SSA22 protocluster at z=3.09 and show how IFS helped uncover evidence for a galaxy-wide superwind outflow.
openaire   +2 more sources

JWST observes the assembly of a massive galaxy at $z\sim4$

open access: yesThe Open Journal of Astrophysics
We present JWST observations of the radio galaxy TGSSJ1530+1049, spectroscopically confirmed at $z=4.0$. NIRCam images and NIRSpec/IFU spectroscopy ($R=2700$) show that TGSSJ1530+1049 is part of one of the densest-known structures of continuum and line ...
Aayush Saxena   +20 more
doaj   +1 more source

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