Publication details for Dr Peter W. DraperKodric, Mihael, Riffeser, Arno, Hopp, Ulrich, Goessl, Claus, Seitz, Stella, Bender, Ralf, Koppenhoefer, Johannes, Obermeier, Christian, Snigula, Jan, Lee, Chien-Hsiu, Burgett, W. S., Draper, P. W., Hodapp, K. W., Kaiser, N., Kudritzki, R.-P., Metcalfe, N., Tonry, J. L. & Wainscoat, R. J. (2018). Cepheids in M31: The PAndromeda Cepheid Sample. The Astronomical Journal 156(3): 130.
- Publication type: Journal Article
- ISSN/ISBN: 1538-3881 (electronic)
- DOI: 10.3847/1538-3881/aad40f
- Further publication details on publisher web site
- Durham Research Online (DRO) - may include full text
Author(s) from Durham
We present the largest Cepheid sample in M31 based on the complete Pan-STARRS1 survey of Andromeda (PAndromeda) in the r P1, i P1, and g P1 bands. We find 2686 Cepheids with 1662 fundamental-mode Cepheids, 307 first-overtone Cepheids, 278 type II Cepheids, and 439 Cepheids with undetermined Cepheid type. Using the method developed by Kodric et al., we identify Cepheids by using a three-dimensional parameter space of Fourier parameters of the Cepheid light curves combined with a color cut and other selection criteria. This is an unbiased approach to identify Cepheids and results in a homogeneous Cepheid sample. The period–luminosity relations obtained for our sample have smaller dispersions than in our previous work. We find a broken slope that we previously observed with HST data in Kodric et al., albeit with a lower significance.