J/PASJ/57/881 Imaging of high-redshift Lyman alpha emitters (Yamada+, 2005)
An intermediate-band imaging survey for high-redshift Lyman alpha emitters:
the Mahoroba-11.
Yamada S.F., Sasaki S.S., Sumiya R., Umeda K., Shioya Y., Ajiki M.,
Nagao T., Murayama T., Taniguchi Y.
<Publ. Astron. Soc. Jap., 57, 881-903 (2005)>
=2005PASJ...57..881Y 2005PASJ...57..881Y
ADC_Keywords: Surveys ; Photometry, UBVRI ; Photometry, Cousins
Keywords: cosmology: early universe - cosmology: observations -
galaxies: evolution - galaxies: formation
Abstract:
We present results of our intermediate-band optical imaging survey
for high-z Lyα emitters (LAEs) using the prime focus camera,
Suprime-Cam, on the 8.2m Subaru telescope. In our survey, we used
eleven filters: four broad-band filters (B, RC, i', and z') and
seven intermediate-band filters covering from 500nm to 720nm. We call
this imaging program the Mahoroba-11. The seven intermediate-band
filters were selected from a series of IA filters, which is the
Suprime-Cam intermediate-band filter system, whose spectral resolution
is R=23. Our survey was made in a 34'x27' sky area in the Subaru
XMM-Newton Deep Survey Field. We found 409 IA-excess objects, which
provided us with a large photometric sample of strong emission-line
objects. Applying the photometric redshift method to this sample, we
obtained a new sample of 198 LAE candidates at 3<z<5. We found no
evidence for evolutions of the number density and the star-formation
rate density (SFRD) for LAEs with logL(Lyα)(erg/s)>42.67 between
z∼3 and z∼5.
Description:
Deep and wide-field B-, RC-, i'-, and z'-band imaging data of a
southward 30'x24' area in the Subaru/XMM-Newton Deep Survey Field (the
SXDS field) centered at RA=02:18:00, DE=-05:12:00 (J2000.0) were
obtained using the Suprime-Cam on the 8.2m Subaru telescope during a
period between 2000 August and 2002 January by the SXDS team.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 79 11 Journal of observations
table3.dat 90 198 Catalog of LAE (Lyα emitter) candidates
table4.dat 69 198 Properties of LAE candidates
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See also:
J/A+A/431/793 : Ly-alpha emitters around MRC 0316-257 (Venemans+, 2005)
J/PASJ/57/165 : SDF : Ly-alpha emitters (Taniguchi+, 2005)
B/subaru : Log of Subaru Prime Focus Camera Exposures (ADAC NAOJ, 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Filter Filter name
7- 10 I4 0.1nm lambdac Central wavelength of the filter band
12- 15 I4 0.1nm FWHM FWHM of the filter band
17- 68 A52 --- Obs Observation dates
70- 74 I5 s IntTime Total integration time
76- 79 F4.1 mag magLim Limiting magnitude (in AB mag)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- [YSS2005] Object designation, IANNN NNNNNN (G1)
14- 18 F5.2 arcmin DRA Offset in right ascension (2)
20- 24 F5.2 arcmin DDE Offset in declination (2)
26 A1 --- l_Bmag Limit flag on Bmag
27- 30 F4.1 mag Bmag B (436.4±100.8nm) magnitude (3)
32 A1 --- l_Rcmag Limit flag on Rcmag
33- 36 F4.1 mag Rcmag Cousins R (641.0±157.6nm) magnitude (3)
38 A1 --- l_i'mag Limit flag on i'mag
39- 42 F4.1 mag i'mag i' (758.9±153.5nm) magnitude (3)
44 A1 --- l_z'mag Limit flag on z'mag
45- 48 F4.1 mag z'mag z' (902.4±140.9nm) magnitude (3)
50 A1 --- l_IA527mag Limit flag on IA527mag
51- 54 F4.1 mag IA527mag IA527 (527.2±24.2nm) magnitude (3)
56 A1 --- l_IA574mag Limit flag on IA574mag
57- 60 F4.1 mag IA574mag IA574 (574.3±27.1nm) magnitude (3)
62 A1 --- l_IA598mag Limit flag on IA598mag
63- 66 F4.1 mag IA598mag IA598 (600.0±29.4nm) magnitude (3)
68 A1 --- l_IA624mag Limit flag on IA624mag
69- 72 F4.1 mag IA624mag IA624 (622.6±29.9nm) magnitude (3)
74 A1 --- l_IA651mag Limit flag on IA651mag
75- 78 F4.1 mag IA651mag IA651 (650.2±32.2nm) magnitude (3)
80 A1 --- l_IA679mag Limit flag on IA679mag
81- 84 F4.1 mag IA679mag IA679 (678.8±33.6nm) magnitude (3)
86 A1 --- l_IA709mag Limit flag on IA709mag
87- 90 F4.1 mag IA709mag IA709 (708.2±31.8nm) magnitude (3)
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Note (2): Offset from RA=02:18:00, DE=-05:12:00 (J2000.0).
Note (3): AB magnitude in a 2" diameter; the filter characteristics are
detailed in table1.dat
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- [YSS2005] Object designation, IANNN NNNNNN (G1)
14- 19 F6.1 0.1nm EWobs Observed equivalent width of Lyα line
21- 26 F6.1 0.1nm EWrest Rest-frame equivalent width
28- 35 E8.3 mW/m2 F(Lya) Lyα flux
37- 44 E8.3 10-7W L(Lya) Lyα luminosity
46- 53 E8.3 10-7W/Hz L(UV) Monochromatic UV luminosity
55- 59 F5.1 mag MUV Absolute UV magnitude
61- 64 F4.1 solMass/yr SFR(Lya) Lyα star formation rate
66- 69 F4.1 solMass/yr SFR(UV) UV star formation rate
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Global notes:
Note (G1): Object are designated as IANNN NNNNN, where IANNN is the
name of the IA filter, and NNNNNN a sequential number
for the corresponding IANNN image.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 29-Jun-2006