The All Sky Automated Survey. The Catalog of Variable Stars. V. Declinations 0 deg - 28 deg of the Northern Hemisphere

TL;DR

This paper presents a catalog of 11,509 variable stars in the northern hemisphere, identified from the ASAS survey data, including classifications and light curves, enhancing the understanding of stellar variability.

Contribution

It provides the fifth part of the variable star catalog from ASAS, with automated classification and publicly available data for stars between declinations 0 and +28 degrees.

Findings

11,509 variable stars identified

Automated classification based on light curve properties

Data and light curves publicly accessible

Abstract

This paper contains the fifth part of the Catalog of Variable Stars created from the V-band photometric data collected by 9x9 deg camera of the All Sky Automated Survey. Preliminary list of variable stars found in the fields located between declination 0 and +28 deg of the northern hemisphere is presented. 11,509 stars brighter than V=15 were found to be variable (2,482 eclipsing, 1,397 regularly pulsating, 318 Mira and 7,310 other stars). Automated algorithm taking into account light curve properties (period, fourier coefficients) and other available data (2MASS colors, IRAS fluxes) was applied to roughly classify objects. Basic photometric properties are presented in the tables and thumbnail light curves are made available for reference. All the photometric data are available over the INTERNET at http://www.astrouw.edu.pl/~gp/asas/asas.html or http://archive.princeton.edu/~asas