VRc observations of LMC long-period red variables

146 long-period red variable stars in the Large Magellanic Cloud (LMC) from the three-year Microlensing Observations in Astrophysics (MOA) project data base were analysed. A careful periodic analysis was performed on these stars and a catalogue of their magnitudes, colours, periods and amplitudes is presented. We convert our blue and red magnitudes to K-band values using 19 oxygen-rich stars. A group of red short-period stars separated from the Mira sequence has been found on a (log P,K) diagram. They are located at the short period side of the Mira sequence consistent with the work of Wood & Sebo (1996MNRAS.282..958W). There are two interpretations for such stars; a difference in pulsation mode or a difference in chemical composition. We investigated the properties of these stars together with their colour, amplitude and periodicity. We conclude that they have small amplitudes and less regular variability. They are likely to be higher-mode pulsators. A large scatter has also been found on the long-period side of the (logP,K) diagram. This is possibly a systematic spread given that the blue band of our photometric system covers both standard B and V bands and affects carbon-rich stars.

Cone search capability for table J/MNRAS/330/137/table1 (146 selected long-period red variables)

Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/330/137
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/330/137
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/330/137
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/330/137
Creator Noda S.; Takeuti M.; Abe F.; Bond I.A.; Dodd R.J.; Hearnshaw J.B.; Honda M.,Honma M.; Jugaku J.; Kabe S.; Kan-Ya Y.; Kato Y.; Kilmartin P.M.,Matsubara Y.; Masuda K.; Muraki Y.; Nakamura T.; Nankivell G.R.; Noguchi C.,Ohnishi K.; Reid M.; Rattenbury N.J.; Saito T.; Sato H.; Sekiguchi M.,Skuljan J.; Sullivan D.J.; Sumi T.; Watase Y.; Wilkinson S.; Yamada R.,Yanagisawa T.; Yock P.C.M.; Yoshizawa M.
Publisher CDS
Publication Year 2006
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy