THE DATA CHARACTERIZING THE MODEL OF STELLAR PASSAGES
AROUND THE SOLAR SYSTEM OVER THE PERIOD OF 1 GYR
REMARKS:
The detailed description of the data and their purpose is given in
the paper: Leto, G., Jakubik, M., Paulech, T., Neslusan, L. 2006,
Contributions of the Astronomical Observatory Skalnate Pleso, in press.
(Main Paper)
The data are available in a single file named "entrances.dat".
In total, the characteristics about 41589 simulated stars passing
around the solar system during 1 Gyr are provided.
STRUCTURE:
The characteristics of each star is recorded in 3 lines, which are
separated from the characteristics of the next star by a blank line.
Content
* first line:
T - time of reaching the heliocentric distance, where the perturbation
of the star becomes significant and the motion of the star should be
followed through a numerical integration of its orbit, further [days
from the beginning of the considered 1-Gyr period]
STAR - identification number in the format $$#####, where $$ represent
the number of the spectral type, from 01 to 13 (see Main Paper) and
##### is a serial number of the star within its type
M - mass [solar mass]
Q - perihelion distance which is reached by the star, when only the
solar gravity and Galactic tide, characterized with A = -B = 13 km/s/kpc
and rho_GM = 0.1 solar mass/pc^3, influence the motion of the star [AU]
* second line:
X, Y, Z - rectangular heliocentric coordinates in time T [AU]
* third line:
VX, VY, VZ - rectangular heliocentric components of the velocity vector
in time T [AU/day]
The coordinates and velocity components are referred to the modified
Galactic coordinate system with x-axis oriented in the direction outward
from the Galactic centre, y-axis in the direction of Galactic rotation,
and z-axis in the direction of south Galactic pole.
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APPENDIX:
C FORTRAN reading of the data in the file "entrances.dat"
C
IMPLICIT REAL*8 (A-H,K-Z)
IMPLICIT INTEGER (I,J)
CHARACTER*7 STAR
DIMENSION T(41589),STAR(41589),M(41589),Q(41589)
DIMENSION X(41589),Y(41589),Z(41589)
DIMENSION VX(41589),VY(41589),VZ(41589)
C
OPEN(UNIT=10,FILE='entrance.dat',STATUS='OLD',ACCESS='SEQUENTIAL')
C
DO 20 I=1,41589
READ(10,510) T(I),STAR(I),M(I),Q(I)
READ(10,520) X(I),Y(I),Z(I)
READ(10,530) VX(I),VY(I),VZ(I)
20 CONTINUE
CLOSE(UNIT=10)
STOP
C
510 FORMAT(F14.0,2X,A7,'. ',F18.14,2X,F9.0)
520 FORMAT(3D23.14)
530 FORMAT(3D23.14/)
END