J/A+A/628/A3 LAE z∼3-7 luminosity functions (de La Vieuville+, 2019)
Faint end of the z∼3-7 luminosity function of Lyman-alpha emitters
behind lensing clusters observed with MUSE.
de La Vieuville G., Bina D., Pello R., Mahler G., Richard J., Drake A.B.,
Herenz E.C., Bauer F.E., Clement B., Lagattuta D., Laporte N., Martinez J.,
Patricio V., Wisotzki L., Zabl J., Bouwens R.J., Contini T., Garel T.,
Guiderdoni B., Marino R.A., Maseda M.V., Matthee J., Schaye J., Soucail G.
<Astron. Astrophys. 628, A3 (2019)>
=2019A&A...628A...3D 2019A&A...628A...3D (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Gravitational lensing
Keywords: gravitational lensing: strong - galaxies: high-redshift -
dark ages, reionization, first stars - galaxies: clusters: general -
galaxies: luminosity function, mass function
Abstract:
Lyman-alpha luminosity function (LF) based on deep observations of
four lensing clusters. The precise aim of the present study is to
further constrain the abundance of Lyman-alpha emitters (LAEs) by
taking advantage of the magnification provided by lensing clusters. We
blindly selected a sample of 156 LAEs, with redshifts between
2.9<z<6.7 and magnification-corrected Lyman alpha luminosities in the
range 39<LogLLyα[erg/s]<43. The price to pay to benefit from
magnification is a reduction of the effective volume of the survey,
together with a more complex analysis procedure. To properly take into
account the individual differences in detection conditions (including
lensing configurations, spatial and spectral morphologies) when
computing the LF, a new method based on the 1/Vmax approach was
implemented. The LAE LF has been obtained in four different redshift
bins with constraints down to logLLyα=40.5. From our data
only, no significant evolution of LF mean slope can be found. When
performing a Schechter analysis including data from the literature to
complete the present sample a steep faint-end slope was measured
varying from α=-1.69+0.08-0.08 to
α=-1.87+0.12-0.12 between the lowest and the highest
redshift bins. The contribution of the LAE population to the star
formation rate density at z∼6 is ~<50% depending on the luminosity
limit considered, which is of the same order as the Lyman-break galaxy
(LBG) contribution. The evolution of the LAE contribution with
redshift depends on the assumed escape fraction of Lyman-alpha
photons, and appears to slightly increase with increasing redshift
when this fraction is conservatively set to one.
Description:
Catalogue of the Lyman alpha emitters (LAE) observed behind the four
lensing fields A1689, A2390, A2667 and A2744 with the VLT/MUSE
instrument and reduced version of these four MUSE spectroscopic cubes.
The present catalogue contains the Lyman-alpha flux and magnification
estimates for each LAE as well as the additional data necessary to
reproduce the LF for the redshift range 2.9<z<6.7.
The Eso programme numbers are:
60.A-9100(A) for A1689
094.A-0115(A) for A2667
094.A-0115(B) for A2390 and A2744
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablee1.dat 96 152 Main characteristics of the 152 LAEs used to
build the luminosity functions
list.dat 86 4 List of fits datacubes
fits/* . 4 Individual fits datacubes
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See also:
J/A+A/498/13 : Lyman-α emitters from redshifts z∼2-3 (Nilsson+, 2009)
J/ApJ/706/762 : LAEs at z∼4.5 in the LALA Cetus field (Wang+, 2009)
J/MNRAS/403/L54 : Lyα emitters (LAE) in A1689-7.1 (Matsuda+, 2010)
J/ApJ/736/31 : HETDEX pilot survey. II. 1.9<z<3.8 LAEs (Blanc+, 2011)
J/ApJ/738/136 : LAEs between 0.19<z<1.25 with GALEX grism (Cowie+, 2011)
J/ApJ/743/9 : z=3.1 LAEs morphological properties (Gronwall+, 2011)
J/ApJ/744/110 : LAE galaxies between 2.1=<z≤3.1 (Ciardullo+, 2012)
J/ApJ/751/29 : Lyα profiles of LAEs at z=3.1 (Yamada+, 2012)
J/ApJ/753/95 : LAE galaxies in the ECDF-S at z∼2.1 and z∼3.1 (Bond+, 2012)
J/ApJ/765/47 : Lyman-break galaxies and LAEs at z∼3 (Nestor+, 2013)
J/ApJ/779/65 : Photometry of LBGs, LAEs and GNBs at z∼2.85 (Mostardi+, 2013)
J/ApJ/810/107 : Lyman break galaxies & LAEs HST photometry (Mostardi+, 2015)
J/ApJ/813/78 : Spitzer z=4.5 & z=5.7 LAEs properties (Finkelstein+, 2015)
J/ApJ/845/172 : LAE candidates around bright Lyα blobs (Badescu+, 2017)
J/MNRAS/465/316 : Lyman continuum LAEs and LBGs in SSA22 field (Micheva+, 2017)
Byte-by-byte Description of file: tablee1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Id Source Id, lensingfield:LAEname
13- 18 F6.4 --- z Redshift based on Lyman-alpha emission
20- 25 F6.2 10-21W/m2/s Flya Lyman-alpha line flux in 10-18*erg/cm2/s,
not corrected for magnification
27- 30 F4.2 10-21W/m2/s e_Flya Error on Lyman-alpha line flux
32- 37 F6.2 --- Mu Flux weighted magnification
39- 43 F5.2 --- e_Mu Uncertainty on magnification (lower value)
45- 50 F6.2 --- E_Mu Uncertainty on magnification (upper value)
52- 56 F5.2 [10-7W] LogLya Lyman-alpha line luminosity in Log[erg/s]
58- 62 F5.1 --- Comp [0/100] Completeness correction
64- 66 F3.1 --- e_Comp Uncertainty on completeness correction
68- 74 F7.1 Mpc3 Vmax Co-volume of detectability (Vmax) in Mpc3
76- 85 F10.6 deg RAdeg Right ascension (J2000)
87- 96 F10.6 deg DEdeg Declination (J2000)
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 9 F9.5 deg RAdeg Right Ascension of center (J2000)
10- 18 F9.5 deg DEdeg Declination of center (J2000)
20- 22 I3 --- Nx Number of pixels along X-axis
24- 26 I3 --- Ny Number of pixels along Y-axis
28- 31 I4 --- Nz Number of slices
33- 39 F7.2 0.1nm blambda Lower value of wavelength interval
41- 47 F7.2 0.1nm Blambda Upper value of wavelength interval
49- 52 F4.2 0.1nm dlambda Wavelength resolution
54- 60 I7 Kibyte size Size of FITS file
62- 71 A10 --- FileName Name of FITS file, in subdirectory fits
73- 86 A14 --- Title Title of the FITS file
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Acknowledgements:
Geoffroy de la Vieuville, gdelavieuvil(at)irap.omp.eu
(End) Patricia Vannier [CDS] 21-Jun-2019