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Tartarus Home Tartarus at Imperial College London ASCA Sequence List
75031000 NGC 4501
DETECTED

Object Information and Products

Object name : NGC 4501
RA (J2000) : 12 31 59.30
Dec (J2000) : +14 25 13.0
Detection significance : 15.47 sigma
Download Products (Full description of products)
All 75031000_v3.1_all.tar.gz Description
Imaging 75031000_v3.1_image.tar.gz Description
Spectral 75031000_v3.1_spectral.tar.gz Description
Timing 75031000_v3.1_timing.tar.gz Description


Observing Times
Elapsed (s) Exposure (s)
SIS0 98016 31693
SIS1 97984 28458
GIS2 100928 34662
GIS3 100928 34644

Observation Information

Sequence : 75031000
ASCA object name : NGC4501
Start date : 22 Jun 1997
Start time : 03:00:47
Start MJD : 50621.12555
SIS clocking mode : 2 CCDs
SIS data mode : BRIGHT2
GIS3 channels : 1024
Event threshold : The effective event threshold is constant.
Link to official ASCA Data Facility processing page


GIS Sky Images and Veron 2001 Objects

GIS2 Detection Image GIS Rebinned Image Veron Objects
GIS2 image with detection regions Binned GIS image with nominal RA/Dec Smoothed GIS image with Veron objects and centroid
jpeg gif jpeg gif jpeg gif


Veron Name
(with NED link) 		RA (J2000) Dec (J2000) Redshift Type
NGC 4501 12 31 59.30 +14 25 13.0 0.007 SEYFERT TYPE 2
2E 1258+1437 12 31 23.90 +14 21 25.0 0.26 BL LAC
Q 1229+149 12 31 48.10 +14 37 42.0 2.32 QSO
Q 1230+1430 12 32 48.70 +14 14 27.0 0.332 QSO
Q 1230+1427 12 32 37.10 +14 10 55.0 0.422 QSO
Link to all NED objects in GIS field-of-view


Detector Images, Extraction Regions and Counts

Detector Detector Images Source
Region
Counts 		Scaled
Background
Counts 		Background
Subtracted
Counts 		Background
Subtracted
Rate
Unsmoothed Smoothed (counts) (counts) (counts) (counts s-1)
SIS0 Unsmoothed SIS0 detector image
jpeg gif 		Smooothed SIS0 detector image
jpeg gif 		1944 1322.6 621.4 1.96e-02
SIS1 Unsmoothed SIS1 detector image
jpeg gif 		Smooothed SIS1 detector image
jpeg gif 		1380 931.6 448.4 1.58e-02
GIS2 Unsmoothed GIS2 detector image
jpeg gif 		Smooothed GIS2 detector image
jpeg gif 		1625 1202.1 422.9 1.22e-02
GIS3 Unsmoothed GIS3 detector image
jpeg gif 		Smooothed GIS3 detector image
jpeg gif 		1909 1327.1 581.9 1.68e-02


Spectral Fitting Results

Energy
Band 		Spectrum NH Photon
Index 		Red. Chi2
/ DOF 		Prob. to
Exceed 		SIS0 Flux
(cm-2) (erg cm-2 s-1)
Full Full-band spectral fit no absorption Unabsorbed
Model 		2.05 1.04 / 174 3.32e-01 6.77e-13
Full Full-band spectral fit with absorption 0.00e+00 2.05 1.05 / 173 3.13e-01 6.76e-13
Soft Soft-band spectral fit no absorption Unabsorbed
Model 		2.41 0.98 / 92 5.35e-01 3.31e-13
Soft Soft-band spectral fit with absorption 0.00e+00 2.41 0.99 / 91 5.05e-01 3.31e-13
Hard Hard-band spectral fit no absorption Unabsorbed
Model 		1.82 1.15 / 73 1.83e-01 4.92e-13
Hard Hard-band spectral fit with absorption 2.49e+18 1.83 1.16 / 72 1.62e-01 4.89e-13
Galactic NH 2.48e+20


Light Curve

Full-band SIS light curve Combined SIS0 + SIS1 0.5-10 keV light curve


Log File and Warnings

Log file

2005.06.30.14:03.75031000.seq

Warnings

Custom regions were used
List of warnings in log file

Missing products

All products are available


Previous Sequence
75029000
Next Sequence
75033000


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    Last Updated: Monday, 25-Jul-2005 15:18:07 EDT