J/MNRAS/450/2615 Spectroscopy of galaxies in the SSA22 field (Saez+, 2015)
An extragalactic spectroscopic survey of the SSA22 field.
Saez C., Lehmer B.D., Bauer F.E., Stern D., Gonzales A., Rreza I.,
Alexander D.M., Matsuda Y., Geach J.E., Harrison F.A., Hayashino T.
<Mon. Not. R. Astron. Soc., 450, 2615-2630 (2015)>
=2015MNRAS.450.2615S 2015MNRAS.450.2615S (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, spectra ; X-ray sources
Keywords: techniques: imaging spectroscopy; surveys; galaxies: active
galaxies: clusters: general; X-rays: galaxies
Abstract:
We present Very Large Telescope VIMOS, Keck DEIMOS and Keck LRIS
multi-object spectra of 367 sources in the field of the z∼3.09
protocluster SSA22. Sources are spectroscopically classified via
template matching, allowing new identifications for 206 extragalactic
sources, including 36 z>2 Lyman-break galaxies (LBGs) and Lyman
alpha emitters (LAEs), eight protocluster members, and 94 X-ray
sources from the ∼400ks Chandra deep survey of SSA22. Additionally,
in the area covered by our study, we have increased by ∼4, 13, and 6
times the number of reliable redshifts of sources at 1.0<z<2.0, at
z>3.4, and with X-ray emission, respectively. We compare our results
with past spectroscopic surveys of SSA22 to investigate the
completeness of the LBGs and the X-ray properties of the new
spectroscopically classified sources in the SSA22 field.
Description:
Very Large Telescope VIMOS, Keck DEIMOS and Keck LRIS multi-object
spectra of 367 sources in the field of the z∼3.09 protocluster SSA22.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 78 258 Spectroscopically surveyed extragalactic sources
table5.dat 129 117 Spectral properties of extragalactic X-ray
sources with redshifts
tablea1.dat 66 121 Spectroscopically surveyed Galactic stars
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See also:
II/282 : SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007)
II/314 : UKIDSS-DR8 LAS, GCS and DXS Surveys (Lawrence+ 2012)
J/MNRAS/400/299 : Chandra deep protocluster survey (Lehmer+, 2009)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Source ID
7- 15 F9.5 deg RAdeg Right ascension (J2000)
17- 23 F7.5 deg DEdeg Declination (J2000)
25- 30 F6.4 --- z Redshift
32- 36 F5.1 mag gmag ?=-99.9 SDSS g-band magnitude (AB) (G1)
38- 42 F5.1 mag Rmag ?=-99.9 Subaru R-band magnitude (AB) (G1)
44- 48 F5.1 mag Kmag ?=-99.9 UKIDSS K-band magnitude (AB) (G1)
50- 53 A4 --- MType Spectral classification
55- 59 A5 --- Masks Masks where source presents A or B quality
spectra
61 A1 --- Qual [AB] Spectral quality (G2)
63- 73 A11 --- Class ? Target selection criteria classes (G3)
75- 78 A4 --- Tel "VLT" for VIMOS and "Keck" for either DEIMOS
or LRIS
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- XID IDs from Table 2 of Lehmer et al. (2009,
Cat. J/MNRAS/400/299, [LAC2009] NNN)
5- 14 A10 --- ID IDs in case the source belongs to our
survey
16- 20 A5 --- Ref Referred surveys where a source has been
spectroscopically observed (1)
22- 30 F9.5 deg RAdeg Right ascension (J2000) (2)
32- 38 F7.5 deg DEdeg Declination (J2000) (2)
40- 42 F3.1 arcsec Dtheta Angular distance between the X-ray source
and the spectroscopic source
44- 49 F6.4 --- z Redshift
51- 55 F5.1 mag Rmag ?=-99.9 Subaru R-band magnitude (AB) (3)
57- 62 F6.2 mag AB2500 ?=-99.9 Monochromatic AB magnitude at
rest-frame wavelength 2500Å (3)
64- 69 F6.2 [10-7W/Hz] logL36um ?=-99.9 logarithm of the monochromatic
luminosity at rest-frame 3.6um
71- 76 F6.2 [10-7W/Hz] logL2500A ?=-99.9 logarithm of the monochromatic
luminosity at rest-frame 2500Å (3)
78- 82 F5.2 [10-7W/Hz] logL2keV logarithm of the monochromatic luminosity
at rest-frame 2keV
84- 87 F4.2 [10-7W/Hz] e_logL2keV 1-sigma error on logL[2keV]
89- 94 F6.2 --- DlogL2keV ?=-99.9 difference between logL[2keV] and
the value from Steffen et al.
(2006AJ....131.2826S 2006AJ....131.2826S)
96-100 F5.2 [10-7W] logLX logarithm of the 2-10 keV band luminosity
102-105 F4.2 [10-7W] e_logLX 1-sigma error on logLX
band luminosity
107-112 F6.2 --- alphaox ?=-99.9 optical-to-X-ray power-law
slope (3)
114-119 F6.2 --- e_alphaox ?=-99.9 1-sigma error on alphaox
121 A1 --- l_logRL Upper limit flag on logRL
122-127 F6.2 [-] logRL ?=-99.9 logarithm of the radio-loudness
parameter (3)
129 I1 --- AGN [0/1] 1 if the source is an AGN candidate,
0 otherwise
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Note (1): Referred surveys code as follows:
1 = this work
2 = Steidel et al. (2003, Cat. J/ApJ/592/728)
3 = Yamada et al. (2012, Cat. J/ApJ/751/29)
4 = Matsuda et al. (2004AJ....128..569M 2004AJ....128..569M)
5 = Le Fevre et al. (2005A&A...439..877L 2005A&A...439..877L)
Note (2): from Table 2 of Lehmer et al. 2009, Cat. J/MNRAS/400/299.
Note (3): The optical magnitudes used to obtain AB2500, L2500, alphaox, and
logRL come from the SDSS survey (e.g., Adelman-McCarthy et al.,
2008ApJS..175..297A 2008ApJS..175..297A, Cat. II/282), the SSA22 photometric survey of Hayashino
et al. (2004AJ....128.2073H 2004AJ....128.2073H) (Subaru magnitudes) and the UKIDSS survey (e.g.,
Lawrence et al., 2007MNRAS.379.1599L 2007MNRAS.379.1599L, Cat. II/314). The flux densities at
rest-frame 2500Å and 4400Å (from which we obtain AB2500, L2500, alphaox,
and logRL) were obtained by interpolating a power-law fit between two Galactic
reddening corrected flux densities obtained from optical magnitudes.
If the observed optical flux densities wavelengths do not cover the rest-frame
2500Å/4400Å, the flux densities at rest-frame 2500Å/4400Å were
obtained from the closest wavelength observed assuming a power-law spectrum
with alpha=-0.5 (e.g., Vanden Berk et al., 2001AJ....122..549V 2001AJ....122..549V).
Luminosities or magnitudes with values of -99.9 indicate cases where
there is no spectral coverage in the given wavelength. Values of -99.9 on
alphaox or logRL indicate cases where there is no spectral coverage in at
least one of the bands needed to obtain these parameters.
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Source ID
7- 15 F9.5 deg RAdeg Right ascension (J2000)
17- 23 F7.5 deg DEdeg Declination (J2000)
25- 29 F5.1 mag gmag ?=-99.9 SDSS g-band magnitude (AB) (G1)
31- 35 F5.1 mag Rmag ?=-99.9 Subaru R-band magnitude (AB) (G1)
37- 41 F5.1 mag Kmag ?=-99.9 UKIDSS K-band magnitude (AB) (G1)
43- 47 A5 --- SpType Spectral classification
49- 51 A3 --- Masks Masks where source presents A or B quality
spectra
53 A1 --- Qual [AB] Spectral quality (G2)
55- 61 A7 --- Class ? Target selection criteria classes (G3)
63- 66 A4 --- Tel "VLT" for VIMOS and "Keck" for either
DEIMOS or LRIS
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Global notes:
Note (G1): The optical magnitudes presented in this Table come from the SDSS
survey (e.g., Adelman-McCarthy et al., 2008ApJS..175..297A 2008ApJS..175..297A, Cat. II/282),
SSA22 photometric survey of Hayashino et al. (2004AJ....128.2073H 2004AJ....128.2073H)
(Subaru magnitudes) and the UKIDSS survey (e.g., Lawrence et al.,
2007MNRAS.379.1599L 2007MNRAS.379.1599L, Cat. II/314).
The UKIDSS magnitudes have been transformed from Vega to AB magnitudes using
K(AB)=K(Vega)+1.9 (from Hewett et al., 2006MNRAS.367..454H 2006MNRAS.367..454H).
Magnitudes with values of -99.9 indicate cases where sources are not found in
the given survey.
Note (G2): Quality flag as follows:
A = unambiguous redshift determination
B = less certain redshift determination
Note (G3): Target selection criteria classes as follows:
XR = sources in the Chandra X-ray catalogue of the SSA22 field from
Lehmer et al. (2009, Cat. J/MNRAS/400/299).
bri = bright sources with optical magnitudes R<22.5
St03 = Steidel et al. (2003, Cat. J/ApJ/592/728) z∼3 LBG candidates
z∼3 = new z∼3 LBG candidates
z∼4 = new z∼4 LBG candidates
LAE = LAE candidates from Hayashino et al. (2004AJ....128.2073H 2004AJ....128.2073H)
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Acknowledgements:
Cristian Saez, csaez(at)astro.umd.edu
(End) Cristian Saez [UMD, USA], Patricia Vannier [CDS] 22-Oct-2015