J/ApJ/586/826 Chandra X-ray observations of NGC 1316 (Kim+, 2003)
Chandra X-ray observations of NGC 1316 (Fornax A).
Kim D.-W., Fabbiano G.
<Astrophys. J. 586, 826 (2003)>
=2003ApJ...586..826K 2003ApJ...586..826K
ADC_Keywords: Galaxies, radio ; X-ray sources
Keywords: galaxies: abundances - galaxies: individual (NGC 1316, NGC 1317) -
galaxies: ISM - X-rays: galaxies
Abstract:
We report the results of the Chandra ACIS subarcsecond resolution
X-ray observation of the archetypal merger radio galaxy NGC 1316
(Fornax A).
Description:
NGC 1316 was observed for 30ks on 2001 April 17 (ObsID 2022), with
the Chandra Advanced CCD Imaging Spectrometer (ACIS). We used the
back-illuminated CCD S3 (CCD ID 7) because of its sensitivity at low
energies. To include NGC 1317 (6.3' away from NGC 1316) in the same S3
chip, a small offset was applied to the SIM (Science Instrument
Module) position. NGC 1316 was kept close to on-axis to achieve the
best spatial resolution.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 92 95 Source List
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See also:
B/chandra : The Chandra Archive Log (CXC, 2002)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 A1 --- Loc Localisation (1)
3- 6 A4 --- --- [CXOU]
8- 23 A16 --- CXOU CXOU designation (JHHMMSS.s+DDMMSS)
25 I1 --- NCCD CCD number
27- 28 I2 --- NDet Detection number
30- 31 I2 h RAh Right ascension (J2000)
33- 34 I2 min RAm Right ascension (J2000)
36- 39 F4.1 s RAs Right ascension (J2000)
41 A1 --- DE- Delination sign (J2000)
42- 43 I2 deg DEd Delination (J2000)
45- 46 I2 arcmin DEm Delination (J2000)
48- 51 F4.1 arcsec DEs Delination (J2000)
53- 57 F5.2 arcsec Rad Source radius
59- 64 F6.2 ct NetCt Net counts in the 0.3-8keV range
66- 70 F5.2 ct e_NetCt rms uncertainty on NetCt
73- 78 F6.3 ct/ks CR Counts rate
80- 84 F5.2 10+31W LX ? X-ray luminosity (in 1038erg/s) (2)
86- 92 A7 --- Notes Notes (3)
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Note (1): Localisation as follows:
A = Within the D25 Ellipse of NGC 1316
B = Within the D25 Ellipse of NGC 1317
C = Beyond D25 of NGC 1316 and NGC 1317
Note (2): LX (in 0.3-8.0keV) is determined with D=18.6Mpc and
ECF=6.037 (or 9.767)x10-15ergs/s for 1ct/ks, which is
appropriate in BI (or FI) CCDs for a source with
photon index 1.7 and N(H)=3x1020cm-2
Note (3): Notes as follows:
1 = Sources within 20" from the center of NGC 1316. The source count
may be contaminated by the diffuse emission.
2 = There is another source(s) within the source extraction radius.
3 = Sources fall near the edge of the detector. The source count
should be considered as a lower limit.
4 = A potential ULX source.
5 = Coincident with globular clusters listed in Shaya et al.
(1996AJ....111.2212S 1996AJ....111.2212S) and Goudfooij et al. (2001MNRAS.322..643G 2001MNRAS.322..643G).
6 = At the center of NGC 1316.
7 = Close to the center of NGC 1316. Its count may be overestimated.
8 = At the center of NGC 1317.
9 = A potential super soft X-ray source.
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History:
From electronic version of the journal
01-Oct-2007: Two names corrected
(End) James Marcout, Patricia Bauer [CDS] 13-May-2003