Research Papers in Physics and Astronomy


Date of this Version



The Astronomical Journal, 146:61 (13pp), 2013 September


Copyright (c) 2013 The American Astronomical Society.


We have obtained VR photometry of 447 Cepheid variable star candidates with declinations north of −14°30’, most of which were identified using the Northern Sky Variability Survey (NSVS) data archive. Periods and other photometric properties were derived from the combination of our data with the NSVS data. Atmospheric parameters were determined for 81 of these stars from low-resolution spectra. The identification of type II Cepheids based on the data presented in all four papers in this series is discussed. On the basis of spectra, 30 type II Cepheids were identified while 53 variables were identified as cool, main sequence stars and 283 as red giants following the definitions in Paper III. An additional 30 type II Cepheids were identified on the basis of light curves. The present classifications are compared with those from the Machine-learned All Sky Automated Survey Classification Catalog for 174 stars in common.

Schmidt AJ 2013 aj481012t11_mrt.txt (102 kB)
Appendix: Table 11, Machine readable text

Schmidt AJ 2013 aj481012t11_votable.xml (107 kB)
Appendix: Table 11, Virtual Observatory (xml)