Access to Astronomical Catalogues

← Click to display the menu
J/ApJ/636/200          XMM-Newton LMXB in NGC4649               (Randall+, 2006)

XMM-Newton observation of diffuse gas and low-mass X-ray binaries in the elliptical galaxy NGC 4649 (M60). Randall S.W., Sarazin C.L., Irwin J.A. <Astrophys. J., 636, 200-213 (2006)> =2006ApJ...636..200R
ADC_Keywords: Binaries, X-ray Keywords: binaries: close - galaxies: elliptical and lenticular, cD - galaxies: ISM - X-rays: binaries - X-rays: galaxies - X-rays: ISM Abstract: We present an XMM-Newton X-ray observation of the X-ray bright E2 elliptical galaxy NGC 4649. In addition to bright diffuse emission, we resolve 158 discrete sources, ∼50 of which are likely to be LMXBs associated with NGC 4649. Description: NGC 4649 was observed on 2001 January 2 for 53,867 s with the thin filter in place and with each EPIC instrument in full frame mode. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 146 47 Discrete X-ray sources
See also: J/ApJ/600/729 : Chandra LMXB in NGC 4649 (Randall+, 2004) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 --- [RSI2006] Source number 4- 8 A5 --- --- [XMMJJ] 10- 24 A15 --- XMMJJ Source IAU name (HHMMSS.s+DDMMSS) 26- 27 I2 h RAh Hour of Right Ascension (J2000.0) 29- 30 I2 min RAm Minute of Right Ascension (J2000.0) 32- 36 F5.2 s RAs Second of Right Ascension (J2000.0) 37 A1 --- DE- Sign of the Declination (J2000.0) 38- 39 I2 deg DEd Degree of Declination (J2000.0) 41- 42 I2 arcmin DEm Arcminute of Declination (J2000.0) 44- 47 F4.1 arcsec DEs Arcsecond of Declination (J2000.0) 49- 54 F6.2 arcsec Dist Projected distance from NGC 4649 center 56- 63 F8.2 10-4ct/s CR The 0.3-12.0keV total count rate (1) 65- 69 F5.2 10-4ct/s e_CR The 1σ error in CR 71- 76 F6.2 --- S/N Signal-to-noise ratio for the count rate 78- 84 F7.2 10+31W LX X-ray luminosity in the 0.3-12.0keV band (in units of 1038ergs/s) 86- 90 F5.2 --- H21 Hardness ratio, (M-S)/(M+S) (2) 92- 95 F4.2 --- E_H21 Upper limit error in H21 97-100 F4.2 --- e_H21 Lower limit error in H21 102-106 F5.2 --- H31 Hardness ratio, (H-S)/(H+S) (2) 108-111 F4.2 --- E_H31 Upper limit error in H31 113-116 F4.2 --- e_H31 Lower limit error in H31 118-121 A4 --- PN PN camera band (SMHT) detection flag (3) 123-126 A4 --- M1 MOS1 camera band (SMHT) detection flag (3) 128-131 A4 --- M2 MOS2 camera band (SMHT) detection flag (3) 133-146 A14 --- Notes Individual notes (4)
Note (1): Combined rate for all chips on which the source was not on a chip gap or bad column. Note (2): S, M, and H are the net counts in the soft (0.3-1keV), medium (1-2keV), and hard (2-12keV) bands, respectively. Note (3): Indicate which of the four energy bands (Soft, Medium, Hard, and Total) each source was detected in for each instrument, where a source is considered to be "detected" if the S/N in that energy band is at least 3. Note (4): Notes, numbered as follows: 1 = Source 1 is extended and appears to be a combination of diffuse structure with one or more point sources. 2 = Source is near a chip gap or bad column on one or more instruments. Position and count rate may be inaccurate. 3 = Possible Chandra X-ray counterpart. 4 = May be a blend of two Chandra sources. 5 = Globular cluster is possible optical counterpart. 6 = Source may be variable. 7 = May be associated with the companion galaxy NGC 4647. 8 = Possible faint optical counterpart. 9 = Source was not visible on the PN camera due to a chip gap or bad column. 10 = Possible USNO-B1.0 (Cat. I/284) optical counterpart. 11 = Possible 2MASS (Cat. II/246) near-infrared counterpart.
History: From electronic version of the journal
(End) Marianne Brouty [CDS] 28-Dec-2006
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

catalogue service