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J/ApJ/613/343       Cas A knot and filament proper motions      (Delaney+, 2004)

Kinematics of X-Ray-emitting components in Cassiopeia A. Delaney T., Rudnick L., Fesen R.A., Jones T.W., Petre R., Morse J.A. <Astrophys. J., 613, 343-348 (2004)> =2004ApJ...613..343D
ADC_Keywords: Supernova remnants ; Proper motions ; X-ray sources Keywords: ISM: individual (Cassiopeia A) - supernova remnants Abstract: We present high-resolution X-ray proper-motion measurements of Cassiopeia A using Chandra X-Ray Observatory observations from 2000 and 2002. We separate the emission into four spectrally distinct classes: Si-dominated, Fe-dominated, low-energy-enhanced, and continuum-dominated. These classes also represent distinct spatial and kinematic components. Description: Cas A was observed for 50ks with the ACIS-S3 chip on board Chandra on 2000 January 3031 and 2002 February 6. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 23 23 24.0 +58 48 54 Cas A = SNR 111.7-02.1 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 57 261 Knot and filament proper motions
See also: J/ApJ/441/307 : Proper motions and brightness of Cas A (Anderson+ 1995) J/ApJ/456/234 : Cas A radio knots spectral indices (Anderson+ 1996) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [DRF2003] Knot or filament designation number 5- 10 F6.1 arcsec blcX X location of bottom left corner (1) 12- 17 F6.1 arcsec blcY Y location of bottom left corner (1) 19- 24 F6.1 arcsec trcX X location of top right corner (1) 26- 31 F6.1 arcsec trcY Y location of top right corner (1) 33- 37 F5.2 arcsec/yr pmRA Right Ascension proper motion (2) 39- 43 F5.2 arcsec/yr pmDE Declination proper motion (2) 45- 49 F5.2 %/yr Rpm Radial component of motion 51- 54 F4.2 %/yr e_Rpm Error in Rpm 56 A1 --- Class Spectral classification (3)
Note (1): Of box defining the region used to measure each knot or filament and extract spectra (arcseconds of offset on epoch 2002 image with respect to the optical expansion center at 23:23:27.77+58:48:49.4 (J2000) (Thorstensen, Fesen & van den Bergh 2001AJ....122..297T). Note (2): All knots have been assigned a constant error of 0.07arcsec/yr. Positive right ascension offset or motion is defined to be westward. Note (3): Spectral classification, defined as follows: S = Si-dominated; F = Fe-dominated; L = LowEnergy-enhanced; C = continuum-dominated; M = mixture of two or more classes.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 09-Jun-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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