J/A+A/443/103 X-ray properties of NGC 300. I. (Carpano+, 2005)
X-ray properties of NGC 300.
I. Global properties of X-ray point sources and their optical counterparts.
Carpano S., Wilms J. , Schirmer M., Kendziorra E.
<Astron. Astrophys. 443, 103 (2005)>
=2005A&A...443..103C 2005A&A...443..103C
ADC_Keywords: X-ray sources ; Cross identifications ; Photometry, photographic
Keywords: Galaxies: individual: NGC 300 - X-rays: galaxies
Abstract:
X-ray properties of NGC 300 point sources, extracted from 66ks of
XMM-Newton data taken in 2000 December and 2001 January. A total of
163 sources were detected in the energy range of 0.3-6kev. We report
on the global properties of the sources detected inside the D25
optical disk, such as the hardness ratio and X-ray fluxes, and on the
properties of their optical counterparts found in B, V, and R images
from the 2.2m MPG/ESO telescope. Furthermore, we cross-correlate the
X-ray sources with SIMBAD, the USNO-A2.0 catalog, and radio
catalogues.
Description:
Table 1 summarizes all information collected from the 86 X-ray sources
detected inside the optical disk.
Table 2 summarizes all possible optical counterparts found from the
corrected X-ray positions within the X-ray position error circle.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 135 86 Properties of the X-ray sources detected inside
NGC-300 disk
table2.dat 169 90 Properties of the optical counterparts
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See also:
I/252 : The USNO-A2.0 Catalogue (Monet+ 1998)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Source identification number
5- 6 I2 h RAh Right ascension (J2000) (1)
8- 9 I2 min RAm Right ascension (J2000) (1)
11- 15 F5.2 s RAs Right ascension (J2000) (1)
17 A1 --- DE- Declination sign (J2000) (1)
18- 19 I2 deg DEd Declination (J2000) (1)
21- 22 I2 arcmin DEm Declination (J2000) (1)
24- 27 F4.1 arcsec DEs Declination (J2000) (1)
29- 32 F4.2 arcsec e_Pos Position error (2)
34- 41 E8.4 --- ML Maximum likelihood
43- 50 E8.4 ct Counts ? Source X-ray counts
52- 59 E8.4 ct e_Counts ? rms uncertainty on Counts
61- 68 E8.4 ct/s CRate ? Source X-ray count rate
70- 77 E8.4 ct/s e_CRate ? rms uncertainty on CRate
79- 83 F5.2 --- HRhard ? Hard hardness ratio (3)
85- 89 F5.2 --- HRsoft ? Soft hardness ratio (3)
91- 94 F4.2 --- e_HRhard ? rms uncertainty on HRHard
96- 99 F4.2 --- e_HRsoft ? rms uncertainty on HRSoft
101-108 E8.4 mW/m2 FXray ? Source flux in the 0.3-6.0kev band
110-117 E8.4 mW/m2 e_FXray ? Lower error of source flux
119-126 E8.4 mW/m2 E_FXray ? Upper error of source flux
128-135 E8.4 10-7W LXray ? Source luminosity in the 0.3-6.0kev band
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Note (1): Equatorial sky coordinates of the X-ray sources from the SAS
edetect_chain task corrected by the eposcorr task.
Note (2): Combined positional error (in arcsec) from edetect_chain and eposcorr.
Note (3): The harness ratios are defined as
HRhard=(H-M)/(H+M+S) and HRsoft=(M-S)/(H+M+S),
where S, M and H are the total count rates in the soft (0.3-1.0keV),
medium (1.0-2.0keV) and hard (2.0-6.0keV) energy bands.
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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 Source identification number
5 I1 --- m_Seq [1/2]? Label number when several optical
counterparts are found within the X-ray
position error area
7- 8 I2 h RAOh ? Right ascension (J2000) (1)
10- 11 I2 min RAOm ? Right ascension (J2000) (1)
13- 16 F4.1 s RAOs ? Right ascension (J2000) (1)
18 A1 --- DEO- Declination sign (J2000) (1)
19- 20 I2 deg DEOd ? Declination (J2000) (1)
22- 23 I2 arcmin DEOm ? Declination (J2000) (1)
25- 28 F4.1 arcsec DEOs ? Declination (J2000) (1)
30- 34 F5.2 mag Bmag ? Optical counterpart magnitude in blue band (2)
36- 40 F5.2 mag Vmag ? Optical counterpart magnitude in visible band (2)
42- 46 F5.2 mag Rmag ? Optical counterpart magnitude in red band (2)
48-169 A122 --- Ident Correlation with source catalog (3)
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Note (1): Equatorial sky coordinates of optical counterparts found by
idlphot's FIND procedure.
Note (2): The errors are of ∼0.15mag.
Note (3): The correlations indicate the type of source, followed by the
Simbad name, between parenthesis, for possible radio and optical
counterparts sources from several catalogs. For radio source, the
reference PFP2004 corresponds to Payne et al., 2004A&A...425..443P 2004A&A...425..443P.
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Acknowledgements: Stefania Carpano,
(End) Stefania Carpano [IAAT, Germany], Patricia Vannier [CDS] 29-Jul-2005