Image directe supérieure et unipotence

Matsuda, Shigeki; Trihan, Fabien

doi:10.1515/crll.2004.028

Cited by 91 publications

(297 citation statements)

References 16 publications

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“…Matsuda et al 2004;Saito et al 2006;Nilsson et al 2006;Smith & Jarvis 2007). Lyα blobs are found mostly at z ≃ 2 − 3, and have angular extents of ≃ 5 − 16 arcsec with total Lyα luminosities ranging from ≃ 6 × 10 42 to 10 44 erg s −1 (Matsuda et al 2004). The most prominent Lyα nebulae known to date are blobs 1 and 2 found by Steidel et al (2000), which extend over 100 kpc with L(Lyα) ≃ 10 44 erg s −1 .…”

Section: Introductionmentioning

confidence: 91%

“…We carry out the simulations in the same manner as Saito et al (2006), but with an improved random noise whose amplitude exactly matches to those of real N B921 image. Figure 7 presents the simulated N B921 images, together with the original narrow-band images of Matsuda et al (2004). The simulated image of blob 1 indicates that our observations would miss ≃ 95% of blob 1's L(Lyα), and that no diffuse Lyα nebula could be identified.…”

Section: Comparisons With Lyα Blobs At Z ∼mentioning

confidence: 99%

“…Because objects experience more severe surface-brightness dimming at z = 6.6 than at z ≃ 3, careful comparisons are needed. We produce simulated N B921 images of blob 1 of Steidel et al (2000) and blob 28 of Matsuda et al (2004) redshifted to z = 6.595 based on the narrow-band images of Matsuda et al (2004). We choose the blob 1 and 28, because they have the brightest Lyα luminosity and the highest surface brightness, respectively, in Matsuda et al's catalog.…”

Section: Comparisons With Lyα Blobs At Z ∼mentioning

confidence: 99%

“…These primordial galaxies make spatially extended Lyα nebulae caused by hydrogen cooling, and it is suggested that high-z extended Lyα sources, or Lyα blobs, are candidates for primordial galaxies (e.g. Matsuda et al 2004;Saito et al 2006;Nilsson et al 2006;Smith & Jarvis 2007). Lyα blobs are found mostly at z ≃ 2 − 3, and have angular extents of ≃ 5 − 16 arcsec with total Lyα luminosities ranging from ≃ 6 × 10 42 to 10 44 erg s −1 (Matsuda et al 2004).…”

Section: Introductionmentioning

confidence: 99%

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DISCOVERY OF A GIANT Lyα EMITTER NEAR THE REIONIZATION EPOCH

Ouchi

Ono

Egami

et al. 2009

ApJ

162

241

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We report the discovery of a giant Lyα emitter (LAE) with a Spitzer/IRAC counterpart near the reionization epoch at z = 6.595. The giant LAE is found from the extensive 1 deg 2 Subaru narrow-band survey for z = 6.6 LAEs in the Subaru/XMM-Newton Deep Survey (SXDS) field, and subsequently identified by deep spectroscopy of Keck/DEIMOS and Magellan/IMACS. Among our 207 LAE candidates, this LAE is not only the brightest narrow-band object with L(Lyα) = 3.9±0.2×10 43 erg s −1 in our survey volume of 10 6 Mpc 3 , but also a spatially extended Lyα nebula with the largest isophotal area whose major axis is at least ≃ 3 ′′. This object is more likely to be a large Lyα nebula with a size of 17-kpc than to be a strongly-lensed galaxy by a foreground object. Our Keck spectrum with medium-high spectral and spatial resolutions suggests that the velocity width is v FWHM = 251±21 km s −1 , and that the line-center velocity changes by ≃ 60 km s −1 in a 10-kpc range. The stellar mass and star-formation rate are estimated to be 0.9 − 5.0 × 10 10 M ⊙ and > 34 M ⊙ yr −1 , respectively, from the combination of deep optical to infrared images of Subaru, UKIDSS-Ultra Deep Survey, and Spitzer/IRAC. Although the nature of this object is not yet clearly understood, this could be an important object for studying cooling clouds accreting onto a massive halo, or formingmassive galaxies with significant outflows contributing to cosmic reionization and metal enrichment of inter-galactic medium.

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Section: Introductionmentioning

confidence: 91%

Section: Comparisons With Lyα Blobs At Z ∼mentioning

confidence: 99%

Section: Comparisons With Lyα Blobs At Z ∼mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

DISCOVERY OF A GIANT Lyα EMITTER NEAR THE REIONIZATION EPOCH

Ouchi

Ono

Egami

et al. 2009

ApJ

162

241

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“…Since S is an affine curve, Berthelot's conjecture discussed in Remark 1.2 is known to have an affirmative answer by S. Matsuda and F. Trihan [34]: a unique overconvergent extension R i f * O † X/K of R i f * O X/K exists for each i ≥ 0. It is then not unreasonable to claim that there "obviously" exists a Leray spectral sequence in rigid cohomology, namely…”

Section: Crystalline Théorème De La Partie Fixementioning

confidence: 99%

A Variational Tate Conjecture in crystalline cohomology

Morrow

2019

J. Eur. Math. Soc.

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Given a smooth, proper family of varieties in characteristic p > 0, and a cycle z on a fibre of the family, we consider a Variational Tate Conjecture characterising, in terms of the crystalline cycle class of z, whether z extends cohomologically to the entire family. This is a characteristic p analogue of Grothendieck's Variational Hodge Conjecture. We prove the conjecture for divisors, and an infinitesimal variant of the conjecture for cycles of higher codimension.This can be used to reduce the ℓ-adic Tate conjecture for divisors over finite fields to the case of surfaces.

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Chemodynamics of Lyman alpha emitters, Lyman break galaxies and elliptical galaxies

Mori

Umemura

2007

EAS Publications Series

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We report an ultra-high-resolution simulation that follows evolution from the earliest stages of galaxy formation through the period of dynamical relaxation. The bubble structures of gas revealed in our simulation (< 3 × 10 8 years) resemble closely the high-redshift Lyman α emitters (LAEs). After 10 9 years these bodies are dominated by stellar continuum radiation and look like the Lyman break galaxies (LBGs) known as the high-redshift star-forming galaxies at which point the abundance of elements appears to be solar. After 1.3 × 10 10 years, these galaxies resemble present-day ellipticals. The comparisons of simulation results with the observations of elliptical galaxies allow us to conclude that LAEs and LBGs are infants of elliptical galaxies or bulge systems in the nearby universe.

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Image directe supérieure et unipotence

Cited by 91 publications

References 16 publications

DISCOVERY OF A GIANT Lyα EMITTER NEAR THE REIONIZATION EPOCH

DISCOVERY OF A GIANT Lyα EMITTER NEAR THE REIONIZATION EPOCH

A Variational Tate Conjecture in crystalline cohomology

Chemodynamics of Lyman alpha emitters, Lyman break galaxies and elliptical galaxies

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