J/ApJ/644/829 Chandra normal galaxies at intermediate redshift (Kim+, 2006)
Chandra Multiwavelength Project: normal galaxies at intermediate redshift.
Kim D.-W., Barkhouse W.A., Romero-Colmenero E., Green P.J., Kim M.,
Mossman A., Schlegel E., Silverman J.D., Aldcroft T., Anderson C.,
Ivezic Z., Kashyap V., Tananbaum H., Wilkes B.J.
<Astrophys. J., 644, 829-842 (2006)>
=2006ApJ...644..829K 2006ApJ...644..829K
ADC_Keywords: Surveys ; X-ray sources ; Active gal. nuclei
Keywords: surveys - X-rays: galaxies - X-rays: general
Abstract:
We have investigated 136 Chandra extragalactic sources, including 93
galaxies with narrow emission lines (NELGs) and 43 with only
absorption lines (ALGs). Based on fX/fO, LX, X-ray spectral hardness,
and optical emission-line diagnostics, we have conservatively
classified 36 normal galaxies and 71 AGNs. Their redshift ranges from
0.01 to 1.2, with normal galaxies in the range z=0.01-0.3. Our normal
galaxies appear to share characteristics with local galaxies, as
expected from the X-ray binary populations and the hot interstellar
matter (ISM). In conjunction with normal galaxies found in other
surveys, we found no statistically significant evolution in LX/LB,
within the limited z range (≲0.1).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 76 36 Normal Galaxy Sample
table456.dat 81 20 Obscured Type 2 AGNs, XBONGs (X-ray-bright,
optically normal galaxies) and E+A Galaxies
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See also:
J/MNRAS/344/134 : Chandra ultraluminous X-ray sources (Humphrey+, 2003)
J/MNRAS/360/782 : X-ray-selected normal galaxies (Georgantopoulos+, 2005)
J/A+A/435/799 : X-ray emitting normal galaxies from BMW-HRI (Tajer+, 2005)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [CXOMP]
7- 22 A16 --- CXOMP Name (JHHMMSS.s-DDMMSS)
24- 27 A4 --- MType Galaxy type (1)
29- 33 F5.3 --- z Redshift
35- 39 F5.2 mag rmag r magnitude
41- 46 F6.2 [mW/m2] logfX X-ray flux
48- 52 F5.2 --- logfX/fo X-ray-to-optical flux ratio
54- 58 F5.2 [10-7W] logLX X-ray luminosity
60- 64 F5.2 --- HR Hardness ratio (G1)
66- 70 F5.2 --- HRl Hardness ratio 1σ lower limit interval
72- 76 F5.2 --- HRu Hardness ratio 1σ upper limit interval
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Note (1): Galaxy type as follows:
ALG = absorption-line galaxy
NELG = narrow emission lines galaxy
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Byte-by-byte Description of file: table456.dat
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Bytes Format Units Label Explanations
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1 I1 --- MType [4/6] Type of galaxy (1)
3- 7 A5 --- --- [CXOMP]
9- 24 A16 --- CXOMP Name (JHHMMSS.s-DDMMSS)
26- 31 F6.2 ct Sct ?=- Soft (0.5-2.0keV) band net count
33- 37 F5.2 ct Hct Hard (2-0.8.0keV) band net count
39- 43 F5.2 mag rmag r magnitude
45- 49 F5.3 --- z Redshift
51- 55 F5.2 --- logfX/fo X-ray-to-optical flux ratio
57- 61 F5.2 [10-7W] logLX X-ray luminosity
63- 67 F5.2 --- HR Hardness ratio (G1)
69- 73 F5.2 --- HRl Hardness ratio 1σ lower limit interval
75- 79 F5.2 --- HRu Hardness ratio 1σ upper limit interval
81 A1 --- n_logfX/fo [ab] Note about type 4 galaxies (2)
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Note (1): Type of galaxies as follows:
4 = Obscured Type 2 AGNs (table4)
5 = Obscured X-ray-bright, optically normal galaxies (XBONG) (table5)
6 = E+A Galaxies (table6)
Note (2): Note for type 4 galaxies as follows:
a = fX/fo>0.1
b = fX/fo=0.01-0.1
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Global notes:
Note (G1):
Hardness ratio, HR=(H-S)/(H+S), where S and H are net counts
in 0.5-2.0keV and 2-0.8.0keV, respectively.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 21-Sep-2007