J/ApJ/668/853 Spectroscopy of UltraStrong Emission Line galaxies (Kakazu+, 2007)
Mapping extremely low metallicity galaxies to redshift one.
Kakazu Y., Cowie L.L., Hu E.M.
<Astrophys. J., 668, 853-875 (2007)>
=2007ApJ...668..853K 2007ApJ...668..853K
ADC_Keywords: Galaxies, photometry ; Photometry, UBVRI ; Redshifts
Keywords: cosmology: observations - galaxies: abundances -
galaxies: distances and redshifts - galaxies: evolution -
galaxies: starburst
Abstract:
We describe the results of a narrowband search for ultrastrong
emission line galaxies (USELs) with EW(Hβ)≥30Å. A total of
542 candidate galaxies are found in a one-half square degree survey
using two ∼120Å filters centered at 8150 and 9140Å with Subaru
SuprimeCam. Follow-up spectroscopy for randomly selected objects in
the candidate sample with Keck II DEIMOS shows that they consist of
[OIII] λ5007-, [OII] λ3727-, and Hα-selected strong
emission line galaxies at intermediate redshift (z<1) and
Lyα-emitting galaxies at high redshift (z≫5).
Description:
The emission-line sample was chosen from a set of narrowband images
obtained with the SuprimeCam camera on the Subaru 8.2m telescope. The
data were obtained in a number of runs between 2001 and 2005 under
photometric or near-photometric conditions.
Spectroscopic observations were obtained for 161 USELs from the sample
using the Deep Extragalactic Imaging Multi-Object Spectrograph
(DEIMOS) on Keck II in a series of runs between 2003 and 2006.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 78 267 *NB816-selected USEL Sample
table3.dat 78 275 *NB912-selected USEL Sample
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Note on table2.dat and table3.dat: Magnitudes are measured in 3" diameter
apertures
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number, [KCH2007] NB816 NNN in Simbad
5- 14 F10.6 deg RAdeg Right ascension in decimal degrees (J2000.0)
16- 24 F9.6 deg DEdeg Declination in decimal degrees (J2000.0)
26- 30 F5.2 mag NB816 Narrow-band 815nm (FWHM=12nm) magnitude
in AB system
32- 37 F6.2 mag Z'mag ?=-99.00 Z' magnitude in AB system
38 A1 --- n_Z'mag [a] Negative flux (G2)
40- 45 F6.2 mag Imag I magnitude
46 A1 --- n_Imag [a] Negative flux (G2)
48- 53 F6.2 mag Rmag ?=-99.00 R magnitude
54 A1 --- n_Rmag [a] Negative flux (G2)
56- 61 F6.2 mag Vmag ?=-99.00 V magnitude
62 A1 --- n_Vmag [a] Negative flux (G2)
64- 69 F6.2 mag Bmag ?=-99.00 B magnitude
70 A1 --- n_Bmag [a] Negative flux (G2)
72- 78 F7.4 --- z ?=-1.0000 Redshift (G3)
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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- 3 I3 --- Seq Sequential number, [KCH2007] NB912 NNN in Simbad
5- 14 F10.6 deg RAdeg Right ascension in decimal degrees (J2000.0)
16- 24 F9.6 deg DEdeg Declination in decimal degrees (J2000.0)
26- 30 F5.2 mag NB912 Narrow-band 914nm (FWHM=12nm) magnitude
in AB system
32- 37 F6.2 mag Z'mag ?=-99.00 Z' magnitude in AB system
38 A1 --- n_Z'mag [a] Negative flux (G2)
40- 45 F6.2 mag Imag ?=-99.00 I magnitude
46 A1 --- n_Imag [a] Negative flux (G2)
48- 53 F6.2 mag Rmag ?=-99.00 R magnitude
54 A1 --- n_Rmag [a] Negative flux (G2)
56- 61 F6.2 mag Vmag ?=-99.00 V magnitude
62 A1 --- n_Vmag [a] Negative flux (G2)
64- 69 F6.2 mag Bmag ?=-99.00 B magnitude
70 A1 --- n_Bmag [a] Negative flux (G2)
72- 78 F7.4 --- z ?=-1.0000 Redshift (G3)
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Global notes:
Note (G2): An entry of "-99.00 " indicates that no excess flux was
measured, while "-99.00a" means that there was a negative flux
in the aperture
Note (G3): A value of -1.0000 in the redshift column means that no
spectroscopic data were obtained for the object, 0.0000 means that
spectra were obtained, but the object was not identified, while
-2.0000 denotes a star
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 03-Jan-2010