PROFILE(1)                TIPSY COMMANDS               PROFILE(1)




NAME

       profile - write physical profiles as a funtion of radius


SYNOPSIS

       profile  box-number  center-box-number particle projection
       binning bin-number filename minimum_radius


DESCRIPTION

       profile is a command that produces a file of  name,  file-
       name,  that  contains various physical profiles as a func-
       tion of radius for particles of type particle in box, box-
       number.   If  the  box box-number or center-box-number are
       not loaded an error is generated.   Boxes  can  be  loaded
       using either the makebox, setbox, or setsphere commands.

       The  center  of the radial distribution is taken to be the
       center of mass of the particles of the  type  particle  in
       box  center-box-number.   If  the  string  "pot"  is given
       instead of a box number for the argument center-box-number
       the  particle  in box box with the lowest potential energy
       is used as the center of the radial bins.

       The projection argument refers to the shape  of  the  bins
       and  the  binning argument refers to how the particles are
       binned, either linearly or log in radius.  There are  bin-
       number  bins  distributed  equally in either radius or log
       radius between minimum_radius and the size of box box-num-
       ber.

       The  output file has the following columns: radius, number
       in bin, density, cumulative mass (M(<r)), circular  veloc-
       ity (sqrt(M(<r)/r)), radial velocity, radial velocity dis-
       persion, tangential velocity, tangential velocity  disper-
       sion,  specific  angular momentum (j),j_theta, j_phi.  The
       j_theta and j_phi angles specify the direction of the spe-
       cific  angular  momentum vector (in degrees).  If particle
       is either gas, baryon, mark, unmark,  or  all  four  addi-
       tional  columns containing the mean mass weighted gas den-
       sity, mass weighted gas  temperature,  mass  weighted  gas
       pressure,  and  mass  weighted  gas entropy are added.  If
       particle is either star, baryon, mark, unmark, or  all  an
       additional column containing the stellar luminosity in the
       Johnson V band is added.  This  is  calculated  using  the
       ages  of  the  star  particles as in Katz (Ap.J. 391: 502,
       1992).


OPTIONS

   Particle
       The possible choices for particle are:

              all
                 Use the all the  particles  in  box  box-number.
                 Adds  columns  containing the mean mass weighted
                 gas density, mass weighted gas temperature,  and
                 mass weighted gas pressure.

              mark
                 Use  the  marked  particles  in  box box-number.
                 Adds columns containing the mean  mass  weighted
                 gas  density, mass weighted gas temperature, and
                 mass weighted gas pressure.

              unmark
                 Use the unmarked particles  in  box  box-number.
                 Adds  columns  containing the mean mass weighted
                 gas density, mass weighted gas temperature,  and
                 mass weighted gas pressure.

              baryon
                 Use  the  gas and star particles in box box-num-
                 ber.  Adds  columns  containing  the  mean  mass
                 weighted gas density, mass weighted gas tempera-
                 ture, and mass weighted gas pressure, and  stel-
                 lar luminosity.

              dark
                 Use  only  the dark matter particles in box box-
                 number

              gas
                 Use only the gas particles  in  box  box-number.
                 Adds  columns  containing the mean mass weighted
                 gas density, mass weighted gas temperature,  and
                 mass weighted gas pressure.

              star
                 Use  only  the star particles in box box-number.
                 Adds a column containing the stellar luminosity.

   Projection
       The possible choices for projection are:

              sphere
                 Make  spherical  bins  centered on the center of
                 mass of the particles of type  particle  in  box
                 center-box-number.   The  option can be abbrevi-
                 ated sph.

              cylinder
                 Make cylindrical bins centered on the center  of
                 mass  of  the  particles of type particle in box
                 center-box-number.  The radii of  the  cylinders
                 are oriented perpendicular to the angular momen-
                 tum axis of the particles of  type  particle  in
                 box  box-number.   The option can be abbreviated
                 cyl.

              ellipse
                 Make similar elliptical  bins  centered  on  the
                 center of mass of the particles of type particle
                 in box center-box-number.  When this  option  is
                 used  you  will be prompted for the radius where
                 the shape and orientation of the  ellipses  will
                 be  determined.   This  is  determined as in the
                 moments command.  The option can be  abbreviated
                 ell.

   Binning
       The possible choices for binning are:

              lin
                 Make  bin-number  bins  spaced equally in radius
                 between minimum-radius and the size of box  box-
                 number

              log
                 Make  bin-number  bins  spaced  equally  in  log
                 radius between minimum-radius and  the  size  of
                 box box-number


SEE ALSO

       makebox(1),  moments(1), rotationcurve(1), setbox(1), set-
       sphere(1)



KQ Release 2.0            22 MARCH 1994                PROFILE(1)

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