Results 31 to 40 of about 250,597 (255)

Dusty-wind-clear JWST Super-early Galaxies

open access: yesThe Astrophysical Journal Letters, 2023
Abstract The JWST discovery of a number of super-early (redshift z > 10) blue galaxies requires these systems to be essentially dust free in spite of their large stellar masses. A possible explanation is that dust is evacuated by radiatively driven outflows. We test this hypothesis by deriving the Eddington ratio λ
Fabrizio Fiore   +4 more
openaire   +4 more sources

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

open access: yesAdvanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino   +7 more
wiley   +1 more source

Ionized Gas Outflows in the Galaxy and Mass Assembly (GAMA) Survey: Signatures of AGN Feedback in Low-mass Galaxies

open access: yesThe Astrophysical Journal
We present a sample of 398 galaxies with ionized gas outflow signatures in their spectra from the Galaxy and Mass Assembly Survey Data Release 4, including 45 low-mass galaxies with stellar masses M _*  
Sheyda Salehirad   +2 more
doaj   +1 more source

Winding sense of galaxies around the local supercluster [PDF]

open access: yesResearch in Astronomy and Astrophysics, 2011
16 pages, 8 figures, accepted on 22 Oct 2010 by ...
openaire   +2 more sources

Superbubble breakout and galactic winds from disc galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
We study the conditions for disk galaxies to produce superbubbles that can break out of the disk and produce a galactic wind. We argue that the threshold surface density of supernovae rate for seeding a wind depends on the ability of superbubble energetics to compensate for radiative cooling. We first adapt Kompaneets formalism for expanding bubbles in
Roy, Arpita   +3 more
openaire   +2 more sources

The clustering of galaxies in hierarchical galaxy formation models [PDF]

open access: yes, 2010
Galaxy clustering encodes information about the values of cosmological parameters and also about the physical processes behind galaxy formation and evolution. The GALFORM semi-analytical model is the theoretical approach we used to model galaxy formation.
KIM, HAN,SIK, Kim, Han Sik
core  

Thermospheric winds and temperatures above Mawson, Antarctica, observed with an all-sky imaging, Fabry-Perot spectrometer [PDF]

open access: yes, 2009
A new all-sky imaging Fabry-Perot spectrometer has been installed at Mawson station (67°36' S, 62°52' E), Antarctica. This instrument is capable of recording independent spectra from many tens of locations across the sky simultaneously.
Anderson, C.   +9 more
core   +2 more sources

WorMa: An Undulatory Robot With Center of Mass Regulation via Internal Fluid Redistribution for Amphibious Locomotion

open access: yesAdvanced Robotics Research, EarlyView.
WorMa is an amphibious undulatory robot that uses Center of Mass redistribution as the sole terrain adaptation mechanism. This mechanism is based on internal fluid mass redistribution through a pump‐driven latex balloon system that creates three profiles: head‐biased, balanced, and tail‐biased.
Daniil Filimonov, Nana Obayashi
wiley   +1 more source

A Dual Active Black Hole Candidate with Mass Ratio ~7:1 in a Disk Galaxy

open access: yesThe Astrophysical Journal Letters
Dual active galactic nuclei (AGNs) with comparable masses are commonly witnessed among the major merged galaxies with interaction remnants. Considering almost every massive galaxy is associated with multiple dwarf satellites around it, minor mergers ...
Xiao Cao   +10 more
doaj   +1 more source

Galactic Wind Signatures around High‐Redshift Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2007
16 pages, 16 figures, ApJ in press.
Kawata, Daisuke, Rauch, Michael
openaire   +3 more sources

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