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J/MNRAS/330/137  VRc observations of LMC long-period red variables (Noda+, 2002)

Study of variable stars in the MOA data base: long-period red variables in the Large Magellanic Cloud. 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. <Mon. Not. R. Astron. Soc. 330, 137 (2002)> =2002MNRAS.330..137N
ADC_Keywords: Magellanic Clouds ; Stars, variable ; Magnitudes Keywords: catalogues - stars: AGB and post-AGB - stars: oscillations - stars: variables: other - Magellanic Clouds Abstract: 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. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 89 147 146 selected long-period red variables
See also: J/AJ/99/784 : IR photometry of LMC long-period variables (Hughes+ 1990) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 12 A12 --- [NTA2002] MOA identification (nlmcN-NNNNNN) 14 I1 h RAh Right ascension (J2000.0) 16- 17 I2 min RAm Right ascension (J2000.0) 19- 23 F5.2 s RAs Right ascension (J2000.0) 25 A1 --- DE- Declination sign (J2000.0) 26- 27 I2 deg DEd Declination (J2000.0) 29- 30 I2 arcmin DEm Declination (J2000.0) 32- 36 F5.2 arcsec DEs Declination (J2000.0) 38- 42 F5.2 mag <Rcmag> Kron-Cousins R magnitude mean intensity 44- 48 F5.2 mag <Vmag> Johnson V magnitude mean intensity 50- 53 F4.2 mag e_<Rcmag> rms uncertainty on <Rcmag> 55- 58 F4.2 mag e_<Vmag> rms uncertainty on <Vmag> 60- 64 F5.1 d Per period 66- 69 F4.2 --- theta Phase Dispersion Minimization algorithm (PDM) reliability parameter 71 A1 --- Id [a-g 1] Identification of the stars referred to in the text 73- 86 A14 --- SHV Hughes & Wood (1990, Cat. J/AJ/99/784) number 88- 89 A2 --- SpType MK Spectral type for stars from Hughes & Wood (1990, Cat. J/AJ/99/784)
History: From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 28-Mar-2002
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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