On this page you can download data from my two Tully-Fisher relation papers (described below).

Please see the papers for a detailed description of the contents, basic information on the columns is included below.

If you use this data I would be interested to know (no requirement just curious) so would appreciate an email (karen.masters 'at' port.ac.uk).

Also feel free to email with questions.

The data files:

All files are ascii plain text with columns separated by white space.

For the I-band data (Masters et al. 2006) the columns are 1. AGC Number, 2. RA, 3. Dec, 4. Separation from cluster centre (arcsec I think), 5. log(W) - with the ORC-HI width correction already applied, 6. Error on log (W), 7. Absolute Magnitude (with all parts of the type correction applied), 8. "DC" part of the type correction, 9. apparent magnitude, 10. error on magnitude, 11. inclination, 12. Galaxy type, 13. Galaxy Vcmb, 14. Vcmb used to get AM, 15. Code saying where the photometry came from, 16. Abell number, 17. Incompleteness bias, 18. Beta g (see paper for definition), 19. Beta I (see paper), 20. Cluster offset (ie. the amount the cluster TF relation is shifted when they are all combined), 21. Semi-major axis in B-band. 22. Radius enclosing 83% of optical light (optical radius), 23. Code about source of width, 24. Another code about the widths. 25. Another code - HI if HI, pe if Optical Rotation Curve. 26. Rmax of the ORC. 27. Info on shape of ORC - if this is less than 50 the ORC is flat, otherwise it's rising. This is not used for HI widths obviously, and is just set to 1 then.

For the data from Masters et al. (2008), the columns are: (1) ID, (2) ra, (3) dec, (4) distance from cluster, (5) log(w), (6) lgwer, (7) M (in relevant band), (8) morphological correction, (9) apparent magnitude, (10) error on magnitude, (11) inclination, (12) type, (13) CMB velocity of galaxy, (14) galaxy velocity used (often cluster central velocity), (15) code indicating source of I-band photometry, (16) cluster id, (17) incompleteness bias correction, (18) bias from distance to cluster, (19) bias from cluster size, (20) offset due to vpec of cluster, (21) semi-major axis from RC3,(22) radius enclosing 83% of I-band light, (23) code indicating source of rotation, (24) ORC or HI width, (25:26) 2 columns with stuff about correcting the ORC to the HI scale as described in paper.

A couple of comments on the above (2MASS) files:

  • the widths are corrected for inclination already, and any width from ORC are put onto the "HI scale" as described (ie. can plot straight from this column).
  • the magnitudes already have extinction (internal and Galactic) applied, and also the type correction (listed in the next column), so just need to apply the incompleteness, cluster size, distance and vpec corrections (which should be subtracted). Note that in Figure 2(a) the K-band magnitudes are erroneously plotted with the type correction applied twice. This error is not present in the J- or H-band plots, nor in the fitting.

Also a comment about Equation 7 in Masters et al. 2008 - the morphological type correction TX, as listed on page 4 of the paper should actually be added to the raw magnitudes not subtracted as listed.

"Type" is a coding for types:

  • 300-> generic spiral (treated as Sb because no other info)
  • T<=130 Sa or earlier
  • T=140/141 or 300 Sb
  • T>=150 (& T!=300) Sc or later

Tully-Fisher Papers

The Tully-Fisher Relation in the Near Infra-Red, Karen Masters, John Huchra and Christopher Springob, 2008, ApJ
A new calibration of the universal Tully-Fisher (or luminosity--rotation speed) relation for spiral galaxies. I show the variation of the slope and zero-point with wavelength and spiral galaxy type.
Astroph link...

SFI++ I: A New I-Band Tully-Fisher Template, the Cluster Peculiar Velocity Dispersion, and H0, Karen Masters, Christopher Springob, Martha Haynes & Riccardo Giovanelli 2006, ApJ, 653, 861
A new calibration of the universal I-band Tully-Fisher (or luminosity--rotation speed) relation for spiral galaxies. We also measure the cluster peculiar velocity dispersion which provides an estimate of sigma8, and using a sample of galaxies with Cepheid distances to tie down the base of the distance ladder derive H0=74+/-2+/-6 km/s/Mpc.
ADS abstract.

Related papers

SFI++ II: A New I-band Tully-Fisher Catalog, Derivation of Peculiar Velocities and Dataset Properties
The data release paper for the peculiar velocity sample I worked on for my thesis. Watch out for an upcoming erratum (minor corrections to a small percentage of the peculiar velocities)
Astroph link...

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M81 by Galex, HST and Spitzer

My Publications:

  • My CV: pdf.
  • Download my PhD thesis: "Galaxy Flows in and Around the Local Supercluster" (Cornell, 2005) pdf (warning: large file!).