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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
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:
FileName Lrecl Records Explanations
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
See also: I/252 : The USNO-A2.0 Catalogue (Monet+ 1998) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
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
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.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
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)
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.
Acknowledgements: Stefania Carpano,
(End) Stefania Carpano [IAAT, Germany], Patricia Vannier [CDS] 29-Jul-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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