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The Ariel V archive includes the 3rd Ariel V Catalog
and the Raw data from the Sky Survey Instrument (SSI)
and the high level products (e.g. lightcurves)
for the All Sky Monitor (ASM) experiment.
No other data from the other experiments are available from the HEASARC.
| Experiment |
Lightcurves |
Raw Data |
| All Sky Monitor |
FITS, GIF |
|
| Sky Survey Instrument |
|
FITS |
Catalogs and Databases:
There are two databases dedicated to
Ariel V : ARIEL3A and ARIEL5.
ARIEL3A is the 3rd Ariel V catalog which contains 443
X-ray positions detected by the Sky Survey Instrument (SSI).
The Ariel V (3A) Catalog was published in two papers:
Warwick et al. 1981, MNRAS, 197, 865 and McHardy et al. 1981, MNRAS,
197, 893.
The ARIEL5 database instead gives access to 250 lightcurves
obtained with the All Sky Monitor.
The Ariel V databases can be accessed via
Browse .
The ASM High level Products: the lightcurves:
The lightcurves available from
the Ariel V ASM
FTP area in the HEASARC archive were obtained from Dr. Steve Holt's final
data reduction. The lightcurves were extracted by fitting multiple satellite orbit
accumulations (up to ~1/2 day) with locations and intensities of known sources.
The primary reference used for sky source location was the 3rd Uhuru, but
addditional positions were also taken from OSO 8, SAS 3, HEAO 1, and
other satellite observations. In total there are available 250 lightcurves.
Not all the lightcurves contains a significant source detection.
HEASARC converted the lightcurves in FITS format (OGIP standard) and created
GIF files. No other type of data are available for the ASM.
The
FTOOLS package, provides a suite of programs that can be used to view and manipulate
these lightcurves. Particularly useful are the
fplot
(to plot the data),
fdump (to view the data file content),
fstatistic (to compute standard statistical value on a column).
The program
perdgrm , part of the XTE software, can be used to compute fourier
analysis on unevenly spaced data.
The SSI Raw data:
The entire Sky Survey Instrument (SSI) raw data set is available from
the Ariel V SSI
FTP area in the HEASARC archive together with the only documentation
available on the FITS file (and on the SSI fortran library). The data were converted
in FITS format by Clive Page (University of Leicester) and a copy given
to the HEASARC.
There is no specific software available to analyze the raw SSI FITS file
to extract for example lightcurves for a given sky position.
However a library of fortran SSI specific routines, delivered with the data,
is available in the HEASARC FTP area. This may be of value to anyone
wishing to write new software to re-analyse the data.
The
FTOOLS package provides basic task to manipulate and view the data.
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