Analysis of Galaxy Spectra

• Gauss-Hermite Fourier Fitting Software

  • Authors: Roeland van der Marel (1991-1993) and Marijn Franx (1988-1991)
  • Purpose: extract stellar kinematics from galaxy spectra
  • Information: read this manual to get started, or consult the following paper for details: [R5]
  • Availability: Download (save to your disk as fourfit.uu; to unpack issue: csh fourfit.uu)

• Gauss-Hermite Pixel Fitting Software

  • Author: Roeland van der Marel (1992-1994)
  • Purpose: extract stellar kinematics from galaxy spectra
  • Information: read this manual to get started, or consult Appendix A of the following paper for details: [R9]
  • Availability: Download (save to your disk as pixfit.uu; to unpack issue: csh pixfit.uu)

Stellar Dynamical Models

• Spherical Anisotropic Jeans Modeling Software

  • Author: Roeland van der Marel (1992-1994)
  • Purpose: predict the velocity dispersion profile of a spherical galaxy model with an arbitrary velocity anisotropy profile.
  • Information: I developed programs to solve this problem in the context of my study of M87, described in detail in the following paper: [R9]
  • Availability: These programs are not currently available in an organized form suitable for distribution. However, feel free to email me if you think that I should work on this.

• Scale-free Modeling Software

  • Authors: Roeland van der Marel (1994-1995) and Jos de Bruijne (1994-1995)
  • Purpose: predict intrinsic and projected kinematical quantities of axisymmetric mass densities with anisotropic velocity distributions in spherical potentials. Useful for studying asymptotic behavior near a black hole or in an isothermal halo.
  • Information: read this manual to get started, or consult the following paper for details: [R15]
  • Availability: Download (save to your disk as scalefree.uu; to unpack issue: csh scalefree.uu)

• Two-integral Jeans Modeling Software

  • Authors: Roeland van der Marel (1989-1992) and James Binney (1985-1989)
  • Purpose: interpret the observed kinematics of (early-type) galaxies with axisymmetric f(E,Lz) models.
  • Information: read this manual to get started, or consult the following papers for details: [R2], [R4], [C3], [R7]
  • Availability: Download (save to your disk as jeans.uu; to unpack issue: csh jeans.uu)

• Other Two-integral Modeling Software

  • Authors: Roeland van der Marel (1992-1997), Wyn Evans (1992), Eddy Qian (1993-1994)
  • Purpose: interpret the observed kinematics of (early-type) galaxies with axisymmetric f(E,Lz) models.
  • Information: I have (co-)developed several other programs (in addition to those listed above) to study the properties of axisymmetric two-integral models. Consult the following papers for details: [R8], [R12], [R21]
  • Availability: These programs are not currently available in an organized form suitable for distribution. However, feel free to email me if you think that I should work on this.

• Three-integral Orbit Superposition Software

  • Author: Roeland van der Marel (1995-1997), in a collaboration with Nicolas Cretton, Hans-Walter Rix and Tim de Zeeuw
  • Purpose: predict intrinsic and projected kinematical quantities of axisymmetric galaxy models with a fully general dynamical structure.
  • Information: read the following paper for details: [R21]
  • Availability: These programs are not currently available in an organized form suitable for distribution. However, feel free to email me if you think that I should work on this.

Instrument Specific Software

• HST/FOS ACQ/PEAK target acquisition software

  • Author: Roeland van der Marel (1994-1995)
  • Purpose: to test acquisition strategies and prepare observations with the HST/FOS (obsolete since 1997)
  • Information: read the following paper to get started: [C5]
  • Availability: Download (save to your disk as fosacqpeak.uu; to unpack issue: csh fosacqpeak.uu), or run the program directly from this website

• HST/NICMOS Pedestal Estimation & Quadrant Equalization Software

  • Author: Roeland van der Marel (1998)
  • Purpose: Estimate an unknown constant bias level (the `pedestal') in HST/NICMOS images, and make the transitions at the quadrant boundaries continuous.
  • Information: read this information to get started.
  • Availability: Download version 5.0 (July 26, 1998) (save to your disk as pedestal.uu; to unpack issue: csh pedestal.uu)
  • IMPORTANT NOTE (August 31, 2000): This software is now available as the IRAF task PEDSUB in the STSDAS package (stsdas.hst_calib.nicmos). You are advised to use that task instead of the (UNIX/FORTRAN) version included here.

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Last modified August 31, 2000.
Roeland van der Marel, marel@stsci.edu.
Copyright Notice.