J/PASJ/58/313 Lyα emitters in the SUBARU Deep Field (Shimasaku+, 2006)
Ly-alpha emitters at z = 5.7 in the Subaru deep field.
Shimasaku K., Kashikawa N., Doi M., Ly C., Malkan M.A., Matsuda Y.,
Ouchi M., Hayashino T., Iye M., Motohara K., Murayama T., Nagao T.,
Ohta K., Okamura S., Sasaki T., Shioya Y., Taniguchi Y.
<Publ. Astron. Soc. Jap., 58, 313-334 (2006)>
=2006PASJ...58..313S 2006PASJ...58..313S
ADC_Keywords: Surveys ; Photometry ; Redshifts ; Equivalent widths
Keywords: galaxies: evolution - galaxies: high-redshift -
galaxies: luminosity function, mass function - galaxies: photometry
Abstract:
We present the properties of Lyα emitters (LAEs) at z=5.7 in the
Subaru Deep Field. A photometric sample of 89 LAE candidates was
constructed from narrow-band data down to NB816=26.0 (AB) in a
continuous 725arcmin2 area. Spectra of 39 objects satisfying the
photometric selection criteria for LAEs were obtained with Subaru and
Keck II Telescopes, among which 28 were confirmed LAEs, one was a
nearby galaxy, and eight were unclassified. We also obtained spectra
of another 24 NB816-excess objects in the field, identifying six
additional LAEs.
Description:
We made spectroscopic observations of 63 objects selected from the
NB816-detected catalog with FOCAS on the Subaru Telescope and DEIMOS
on the Keck II Telescope. A total of 39 objects were observed with
FOCAS in 2002 and 2004 in the multi-slit mode. Twenty-four objects
among the 63 were observed with DEIMOS on UT 2004 April 23 and 24.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 97 63 Spectroscopic properties
table3.dat 73 34 Lyα and continuum properties of confirmed
Lyα emitters (LAEs)
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See also:
J/A+A/431/793 : Ly-alpha emitters around MRC 0316-257 (Venemans+, 2005)
J/PASJ/57/165 : Lyα emitters in the SUBARU Deep Field (Taniguchi+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 A1 --- n_[SKD2006] [abc] Group (1)
3- 8 I6 --- [SKD2006] Identification number (G1)
10- 11 I2 h RAh Right ascension (J2000.0)
13- 14 I2 min RAm Right ascension (J2000.0)
16- 20 F5.2 s RAs Right ascension (J2000.0)
22 A1 --- DE- Declination sign (J2000.0)
23- 24 I2 deg DEd Declination (J2000.0)
26- 27 I2 arcmin DEm Declination (J2000.0)
29- 32 F4.1 arcsec DEs Declination (J2000.0)
34- 38 F5.3 --- z Redshift (2)
40 A1 --- Inst [DF] Instrument used (3)
42- 47 F6.2 --- SW Weighted skewness (quantifies the asymmetry of
the emission lines)
49- 52 F4.2 --- e_SW rms uncertainty on SW
54- 58 F5.2 mag NB816 NB816 magnitude is the MAG_AUTO magnitude
60- 64 F5.2 mag Bmag 2"-aperture B magnitude (4)
65- 69 F5.2 mag Vmag 2"-aperture V magnitude (4)
70- 74 F5.2 mag Rmag 2"-aperture R magnitude (4)
76- 80 F5.2 mag i'mag 2"-aperture i' magnitude (4)
82- 86 F5.2 mag z'mag 2"-aperture z' magnitude (4)
88- 91 F4.2 mag i'-NB816 2"-aperture i'-NB816 colour index
93- 97 F5.2 mag R-z' 2"-aperture R-z' colour index
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Note (1): Groups as follows:
a = Lyα emitters (LAEs)
b = Nearby objects
c = Unclear objects
Note (2): Redshift. For LAEs 1215.67Å is adopted as the Lyα wavelength.
Note (3): Instrument used as follows:
D = DEIMOS
F = FOCAS
- = The nearby object 76702 was observed with FOCAS as well. We have
adopted the DEIMOS spectrum with a better spectral resolution.
Note (4): Magnitudes fainter than the 2σ magnitudes have been replaced
with the 2σ magnitudes.
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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- 6 I6 --- [SKD2006] Identification number (G1)
8 A1 --- n_[SKD2006] [*] * for objects not satisfying the
photometric selection criteria
10- 14 F5.3 --- z Redshift
16- 19 F4.1 0.1nm FWHM Width in FWHM of the Lyα line in the
observed frame
21- 24 F4.1 10+35W L(Lya)sp Lyα luminosity calculated from
the spectrum
26- 29 F4.1 10+35W L(Lya) Lyα luminosity calculated from the
NB816- and z'-band photometry combined with
the spectroscopic redshift
31- 33 F3.1 10+35W e_L(Lya) rms uncertainty on L(Lya)
35- 37 I3 0.1nm W0a(z') Central value (Wc) of z' band (1)
39- 41 I3 0.1nm e_W0a(z') 1σ lower limit of W0a(z') (W-)
43- 45 I3 0.1nm E_W0a(z') 1σ upper limit of W0a(z') (W+)
47- 50 I4 0.1nm W0a(i') ? Central value (Wc) of i' band (1)
51 A1 --- n_W0a(i') [i] i for infinity
53- 55 I3 0.1nm e_W0a(i') ? 1σ lower limit of W0a(i') (W-)
56 A1 --- neW0a(i') [i] i for infinity
57- 60 I4 0.1nm E_W0a(i') ? 1σ upper limit of W0a(i') (W+)
61 A1 --- nEW0a(i') [i] i for infinity
63- 68 F6.2 mag UVMAG ?=- Far-UV continuum absolute magnitude (AB)
70- 73 F4.1 solMass/yr SFR ?=- Star formation rate calculated from
UVMAG
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Note (1): These values are defined as
{integral}{0toWc}P(W)dW = 0.5 and
{integral}{{W-toWc}P(W)dW={integral}{WctoW+}P(W)dW=0.34,
where P(W)dW is the probability distribution of EW derived from
Monte Carlo simulations.
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Global notes:
Note (G1):
Identification number in the NB816-detected catalog.
(End) Patricia Vannier [CDS] 01-Jun-2007