Table · dataset · 2024
F125W and UV mag of 6.0<z<8.2 galaxies candidates
Listed in IVOA Registry (Virtual Observatory)
Reionization is an inhomogeneous process, thought to begin in small ionized bubbles of the intergalactic medium (IGM) around overdense regions of galaxies.
Description
Recent Ly{alpha} studies during the epoch of reionization show evidence that ionized bubbles formed earlier around brighter galaxies, suggesting higher IGM transmission of Ly{alpha} from these galaxies. We investigate this problem using IR slitless spectroscopy from the Hubble Space Telescope (HST) Wide-Field Camera 3 (WFC3) G102 grism observations of 148 galaxies selected via photometric redshifts at 6.0<z<8.2.
These galaxies have spectra extracted from the CANDELS Ly{alpha} Emission at Reionization (CLEAR) survey. We combine the CLEAR data for 275 galaxies with the Keck Deep Imaging Multi-Object Spectrograph and MOSFIRE data set from the Texas Spectroscopic Search for Ly{alpha} Emission at the End of Reionization Survey. We constrain the Ly{alpha} equivalent width (EW) distribution at 6.0<z<8.2, which is described by an exponential form, dN/dEW{prop.to}exp(-EW)/W_0_, with the characteristic e-folding scale width (W_0_).
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We confirm a significant drop in the Ly{alpha} strength (i.e., W_0_) at z>6. Furthermore, we compare the redshift evolution of W0 between galaxies at different UV luminosities. UV-bright (M_UV_<-21 [i.e., L_UV_>L*]) galaxies show weaker evolution with a decrease of 0.4(+/-0.2) dex in W_0_ at z>6, while UV-faint (M_UV_>-21 [_LUV_<L*]) galaxies exhibit a significant drop of 0.7-0.8(+/-0.2) dex in W_0_ from z<6 to z>6.
If the change in W_0_ is proportional to the change in the IGM transmission for Ly{alpha} photons, then this is evidence that the transmission is "boosted" around UV-brighter galaxies, suggesting that reionization proceeds faster in regions around such galaxies.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/933/87 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022ApJ...933...87J ui.adsabs.harvard.edu/abs/2022ApJ...933...87J ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/apj/933/87 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Imaging 75%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/933/87 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:infrared | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:uv | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].local:modality:imaging | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |