Discovery and characterization of the highest-redshift barred spiral galaxy candidate at z=5.102, with bar length ~4.5 kpc, stellar mass 10^10.45 solar masses, SFR 144 solar masses per year, and evidence for AGN and interaction.
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Simulated JWST/NIRCam bulge+disk galaxies show that single and double Sérsic fits recover magnitudes within about 0.5 mag and sizes within about 0.2 dex for galaxies brighter than roughly 26 to 27 mag.
Galaxy bars decline from about 25% of disc galaxies at z~0.8 to about 3% at z~3.5, but the fraction of strong bars stays near 4% from z=0.5 to z=2.5.
A galaxy at z=3.16 has a bar with older stars making up 30% of its mass but only 8% of its recent star formation, supporting inside-out galaxy formation and possible early bar quenching.
Barred galaxies transition from actively star-forming at z~1-2 to quiescent at z~0, with the fraction of quiescent galaxies hosting bars increasing steeply over cosmic time.
Globally self-gravitating disks in AGN undergo bar instability and collapse in ~10^3–4 years, making them extremely rare and explaining the prevalence of low-mass Keplerian masering disks.
citing papers explorer
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A massive barred spiral galaxy at z = 5.102 discovered by JWST
Discovery and characterization of the highest-redshift barred spiral galaxy candidate at z=5.102, with bar length ~4.5 kpc, stellar mass 10^10.45 solar masses, SFR 144 solar masses per year, and evidence for AGN and interaction.
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Unveiling Galaxy Structures: Systematic Analysis of Bulge+Disk Decomposition Using Simulated JWST/NIRCam Observations
Simulated JWST/NIRCam bulge+disk galaxies show that single and double Sérsic fits recover magnitudes within about 0.5 mag and sizes within about 0.2 dex for galaxies brighter than roughly 26 to 27 mag.
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Galaxy Zoo CEERS: Bar fractions up to z~4.0
Galaxy bars decline from about 25% of disc galaxies at z~0.8 to about 3% at z~3.5, but the fraction of strong bars stays near 4% from z=0.5 to z=2.5.
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Discovery of a Barred-Spiral Galaxy at $z_{spec}$ = 3.16 II. The Star Formation History
A galaxy at z=3.16 has a bar with older stars making up 30% of its mass but only 8% of its recent star formation, supporting inside-out galaxy formation and possible early bar quenching.
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Exploring the Relationship Between Bars, Star Formation Activity, and Host Galaxy Properties from $\mathbf{z \sim 0}$ to $\mathbf{z \sim 2}$
Barred galaxies transition from actively star-forming at z~1-2 to quiescent at z~0, with the fraction of quiescent galaxies hosting bars increasing steeply over cosmic time.
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The Limited Lifetime of Self-Gravitating Accretion Disks In Galactic Centers
Globally self-gravitating disks in AGN undergo bar instability and collapse in ~10^3–4 years, making them extremely rare and explaining the prevalence of low-mass Keplerian masering disks.
- Discovery of a Barred-Spiral Galaxy at $z_{spec}$ = 3.16 I: Bar Identification and Properties