Preliminary analysis of ULPC light curves using Fourier decomposition technique

Chow Choong Ngeow, Scott Lucchini, Shashi Kanbur, Brittany Barrett, Bin Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Recent work on Ultra Long Period Cepheids (ULPCs) has suggested their usefulness as a distance indicator, but has not commented on their relationship as compared with other types of variable stars. In this work, we use Fourier analysis to quantify the structure of ULPC light curves and compare them to Classical Cepheids and Mira variables. Our preliminary results suggest that the low order Fourier parameters (Rk1 and φk1) of ULPCs show a continuous trend defined by Classical Cepheids after the resonance around 10 days. However their Fourier parameters also overlapped with those from Miras, which make the classification of long period variable stars difficult based on the light curves information alone.

Original languageEnglish
Title of host publicationInternational Conference on Space Science and Communication, IconSpace
Pages7-12
Number of pages6
DOIs
StatePublished - 2013
Event2013 3rd IEEE International Conference on Space Science and Communication, IconSpace 2013 - Melaka, Malaysia
Duration: 1 Jul 20133 Jul 2013

Publication series

NameInternational Conference on Space Science and Communication, IconSpace
ISSN (Print)2165-4301
ISSN (Electronic)2165-431X

Conference

Conference2013 3rd IEEE International Conference on Space Science and Communication, IconSpace 2013
Country/TerritoryMalaysia
CityMelaka
Period1/07/133/07/13

Keywords

  • Cepheids
  • distance scale
  • late-type stars

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