Catalogues

This page lists all ASAS photometric and variable stars catalogues.
All exposures were made using 'I ' band and 'V ' band filters, and were transformed into the standard 'I ' and 'V ' system using Landolt and Hipparcos. In most cases photometry is accurate to about 0.05 mag, but in many cases (due to problems with flatfielding and lack of colour information) errors could be 0.1 mag or larger.

This page will be updated systematically to reflect all changes incorporated into the catalog.

ASAS-4 results

• In early 2010 ASAS hardware underwent a significant update and a new ASAS-4 system replaced ASAS-3. We are working on creating updated catalogs and making new data public.

ASAS-3 results

• The ASAS-3 Photometric V-band Catalogue contains over 15,000,000 light curves for stars brighter then about 14 mag in V. The lower limit, due to saturation, is at V~8 mag, but this value depends on a number of parameters (a focus, an exposure time, a place on frame) and changes in time. For now, ASAS-3 V-band and ASAS-2 I-band measurements are available. The last ASAS-3 observation was taken in December 2010. In this service we provide: plots, downloadable light curves, frame slices and links to other sites with more information on the object.

• The on-line ASAS Catalog of Variable Stars (ACVS) is now avaialble for tests. Please send comments and wishes to asas-webmaster@astrouw.edu.pl.
  The ASAS-3 Catalog of Variable Stars contains over 10,000 eclipsing binaries, almost 8,000 periodic pulsating and over 31,000 irregular stars found among 15,000,000 stars on the sky south of the declination +28 (512 fields).
  Download The ASAS Catalog of Variable Stars:
  • ACVS ver. 1.0 05/09/2005, 50,122 lines, 2.3MB (gzipped)
  • ACVS ver. 1.1 31/01/2006, 50,124 lines, 2.4MB (gzipped) contains some minor changes and refinements.
  
  Please go to the Download section to get the lightcurves of the V-band variables.
  
  The Catalog has a fixed format suitable for reading using FORTRAN or C. The first two hashed lines of the file contain FORMAT and READ statements suitable for FORTRAN. File is sorted according to ASAS-ID (first column). Each line contains the following fields:
  • ASAS-ID - ASAS identification (coded from the star's RA_2000 and DEC_2000 in the format: hhmmss+ddmm.m),
  • P - period in days (or characteristic time scale of variation for irregular objects),
  • T_0 - epoch of minimum (for eclipsing) or maximum (for pulsating) brightness,
  • V_max - brightness at maximum,
  • Amp_V - amplitude of variation,
  • Type - one of the predefined classes: DSCT, RRC, RRAB, DCEP_FU, DCEP_FO, CW, ACV, BCEP, MIRA and MISC, or its combination,
  • GCVS-ID - GCVS name,
  • GCVS-Type - GCVS variability type,
  • IR_12 - IRAS flux at 12 microns (listed as -2.5 log flux),
  • IR_25 - IRAS flux at 25 microns
  • IR_60 - IRAS flux at 60 microns
  • IR_100 - IRAS flux at 100 microns
  • J - 2MASS J photometry,
  • H - 2MASS H photometry,
  • K - 2MASS K photometry,
  • V-IR_12 - color index,
  • V-J - color index,
  • V-H - color index,
  • V-K - color index,
  • J-H - color index,
  • H-K - color index,
  
  
• Sky Atlas - graphic interface to ASAS-3 V-band Catalog.
  
  
• Kepler FoV - catalog of asteroseismic targets for the Kepler mission, based on ASAS3-North observations

ASAS-2 results

Data obtained in the years 1997-2000 are available as:

• The ASAS-2 Photometric I-band Catalogue - giving interactive access to > 50 milion measurements of > 140,000 stars; in the selected fields. All objects of this Catalogue are available for download in the Download section.
  
  
• The ASAS-2 Catalogue of Variable Stars contains over 350 Periodic and 3500 Miscellaneous variables. The list is preliminary, since the search criteria allowed both some variable stars to be omitted and some garbage to be included.
  • a2per.gz (382 entries, 8 kB) - the preliminary list of periodic stars.
  • a2misc.gz (3497 entries, 53 kB) - the preliminary list of miscellaneous (mostly irregular, long-term and multi-period) variables
  
  Please go to the Download section to get the lightcurves of the I-band variables.
  
  The file containing variable stars list is sorted according to ASAS-ID (first column). Each line contains the following fields:
  • ASAS-ID - ASAS identification (coded from the star's RA_2000 and DEC_2000 in the format: hhmmss+ddmm.m),
  • I_max - brightness at maximum,
  • Amp - amplitude of variation,
  • Err - error in brightness,
  • Period - period in days (or characteristic time scale of variation for irregular objects),
  • Nobs - number of observational points,
  • Fields - fields hosting a star,
  • Cross-ID - another ID for the star, if exists
  
  The ASAS Gallery presents collection of the variables' light curves.
  
  
• Sky Atlas - graphic interface to ASAS-2 I-band Catalog