J/A+A/683/A238 JADES Lyman alpha ancillary data table (Jones+, 2024)
JADES: The emergence and evolution of Lyα emission constraints on the
IGM neutral fraction.
Jones G.C., Bunker A.J., Saxena A., Witstok J., Stark D.P., Arribas S.,
Baker W.M., Bhatawdekar R., Bowler R., Boyett K., Cameron A.J., Carniani S.,
Charlot S., Chevallard J., Curti M., Curtis-Lake E., Eisenstein D.J.,
Hainline K., Hausen R., Ji Z., Johnson B.D., Kumari N., Looser T.J.,
Maiolino R., Maseda M.V., Parlanti E., Rix H.-W., Robertson B.E.,
Sandles L., Scholtz J., Smit R., Tacchella S., Uebler H., Williams C.C.,
Willott C.
<Astron. Astrophys. 683, A238 (2024)>
=2024A&A...683A.238J 2024A&A...683A.238J (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Photometry, CCD
Keywords: galaxies: high-redshift - intergalactic medium - dark ages -
reionization - first stars
Abstract:
The rest-frame UV recombination emission line Lyα can be powered
by ionising photons from young massive stars in star forming galaxies,
but its ability to be resonantly scattered by neutral gas complicates
its interpretation. For reionization era galaxies, a neutral
intergalactic medium (IGM) will scatter Lya from the line of sight,
making Lya a useful probe of the neutral fraction evolution. Here, we
explore Lyα in JWST/NIRSpec spectra from the ongoing JADES
programme, which targets hundreds of galaxies in the well-studied
GOODS-S and GOODS-N fields. These sources are UV-faint
(-20.4<MUV←16.4), and thus represent a poorly-explored class of
galaxies. The low spectral resolution (R∼100) spectra of a subset of
84 galaxies in GOODS-S with zspec>5.6 (as derived with optical
lines) are fit with line and continuum models, in order to search for
significant line emission. Through exploration of the R100 data, we
find evidence for Lyα in 17 sources. This sample allows us to
place observational constraints on the fraction of galaxies with
Lyα emission in the redshift range 5.6<z<7.5, with a decrease
from z=6 to z=7. We also find a positive correlation between Lyα
equivalent width and M_{UV}, as seen in other samples. These results
are used to estimate the neutral gas fraction at z∼7, agreeing with
previous results (XHI∼0.5-0.9).
Description:
Details of galaxies taken from literature (position, redshift,
Lyα equivalent width, MUV), which are compared to the JADES
sample. The spectroscopic redshift provided is usually zLyα
(see text for details). For each property, a value of '-' signifies
that no uncertainty is given, while an uncertainty of ' ' signifies
that the corresponding value is an upper limit.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ancdata.dat 146 2097 Galaxy properties from literature
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Byte-by-byte Description of file: ancdata.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Ref Literature reference for properties (1)
14- 30 A17 --- Name Name of galaxy
32- 50 F19.15 deg RAdeg Right ascension (J2000.0)
52- 72 F21.17 deg DEdeg Declination (J2000.0)
74- 79 F6.4 --- zsp Spectroscopic redshift
81- 93 F13.9 --- e_zsp ?=- Uncertainty on redshift
95 A1 --- l_REW Upper limit flag on REW
96-109 F14.9 0.1nm REW Lyα rest equivalent width
111-123 F13.9 0.1nm e_REW ?=- Uncertainty on Lyα
rest equivalent width
125 A1 --- l_MUV Upper limit flag on MUV
126-132 F7.3 mag MUV UV absolute magnitude
134-146 F13.9 mag e_MUV ?=- Uncertainty on UV absolute magnitude
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Note (1): Literature reference for properties as follows:
CUBY03 = Cuby et al., 2003A&A...405L..19C 2003A&A...405L..19C
ENDSLEY22 = Ensley et al., 2022MNRAS.517.5642E 2022MNRAS.517.5642E
FULLER20 = Fuller et al., 2020ApJ...896..156F 2020ApJ...896..156F
HOAG19 = Hoag et al., 2019ApJ...878...12H 2019ApJ...878...12H
JUNG22 = Jung et al., 2022, ApJ, submitted [arXiv:2212.09850]
KERRUTT22 = Kerutt et al., 2022A&A...659A.183K 2022A&A...659A.183K, Cat. J/A+A/659/A183
ONO12 = Ono et al., 2012ApJ...744...83O 2012ApJ...744...83O
PENTERICCI18 = Pentericci et al., 2018A&A...619A.147P 2018A&A...619A.147P
SCHENKER12 = Schenker et al., 2012ApJ...744..179S 2012ApJ...744..179S
SHIBUYA17 = Shibuya et al., 2018PASJ...70S..15S 2018PASJ...70S..15S
SONG16 = Song et al., 2016ApJ...826..113S 2016ApJ...826..113S
TANG23 = Tang et al., 2023MNRAS.526.1657T 2023MNRAS.526.1657T
TILVI20 = Tilvi et al., 2020ApJ...891L..10T 2020ApJ...891L..10T
VANZELLA11 = Vanzella et al., 2011ApJ...730L..35V 2011ApJ...730L..35V
WILLOTT13 = Willot et al., 2013AJ....145....4W 2013AJ....145....4W
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Acknowledgements:
Gareth C. Jones, gareth.jones(at)physics.ox.ac.uk
(End) Gareth C. Jones [Univ. of Oxford], Patricia Vannier [CDS] 29-Dec-2023