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J/A+A/536/A60       EROS-2 Long Period Variables in LMC          (Spano+, 2011)

Long Period Variables in the Large Magellanic Cloud from the EROS-2 survey. Spano M., Mowlavi N., Eyer L., Burki G., Marquette J.-B., Lecoeur-Taibi I., Tisserand P. <Astron. Astrophys. 536, A60 (2011)> =2011A&A...536A..60S
ADC_Keywords: Magellanic Clouds ; Stars, variable ; Photometry, UBVRI ; Photometry, infrared Keywords: stars: AGB and post-AGB - stars: late-type - stars: carbon - stars: variables: general - Magellanic Clouds - catalogs Abstract: The EROS-2 survey has produced a database of millions of time series from stars monitored for more than six years, allowing us to classify some of their sources into different variable star types. Among the so-called, long period variables (LPVs), which are known to follow particular sequences in the period-luminosity diagram, we find long secondary period variables whose variability origin remains a matter of debate. We analyze data for the 856864 variable stars that have been discovered in the Large Magellanic Cloud (LMC) that are present in the EROS-2 database, to detect, classify, and characterize LPVs. Description: Photometric parameters for LPVs discussed in the paper. EROS-2 data were used to determine mean RE magnitude, mean BE RE color, RE band amplitude and up to five periods in RE band. 2MASS J, Ks magnitudes and Spitzer [3.6] magnitude are displayed in case of cross-correlation with LPVs. The table provides a spectral classification based on 2MASS and Spitzer data and special remarks. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 136 43583 Photometric parameters for Long Period Variables
See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) J/A+A/454/185 : EROS-2 microlensing parameters (Hamadache+, 2006) J/A+A/495/249 : EROS-2 beat Cepheids in Magellanic Clouds (Marquette+, 2009) J/AJ/99/784 : IR photometry of LMC long-period variables (Hughes+ 1990) J/MNRAS/330/137 : LMC long-period red variables VRc observations (Noda+, 2002) J/ApJ/660/1486 : Variability of LMC semiregular variables (Soszynski+, 2007) J/AJ/136/1242 : LMC long-period variables from MACHO (Fraser+, 2008) J/AcA/59/239 : LMC long-period variables VI light curves (Soszynski+, 2009) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 12 A12 --- EROS2 EROS-2 source name (lmNNNNaNNNNN) 14- 21 F8.5 deg RAdeg Right ascension (J2000) 23- 31 F9.5 deg DEdeg Declination (J2000) 33- 38 F6.3 mag Remag EROS-2 Re magnitude 40- 44 F5.3 mag Be-Re EROS-2 Be-Re color index 46- 50 F5.3 mag Ramp EROS-2 Re amplitude 52- 59 F8.3 d Per1 ?=0.000 First fitted period 61- 68 F8.3 d Per2 ?=0.000 Second fitted period 70- 77 F8.3 d Per3 ?=0.000 Third fitted period 79- 86 F8.3 d Per4 ?=0.000 Fourth fitted period 88- 95 F8.3 d Per5 ?=0.000 Fifth fitted period 97 I1 --- Np Total number of periods 99-105 F7.3 mag Jmag ?=999.000 2MASS J magnitude 107-113 F7.3 mag Ksmag ?=999.000 2MASS Ks magnitude 115-121 F7.3 mag 3.6mag ?=999.000 IRAC 3.6 micron band magnitude 123-133 A11 --- Type Spectral type (1) 135-136 I2 --- Flag Note (2)
Note (1): Spectral type as follows: RGB = red giant branch O-rich = O-rich C-rich = C-rich Extreme_AGB = extreme asymptotic giant branch N/A = not attributed Note (2): Flags as follows: 0 = No harmonics found between sequences D and E within the five possible periods 1 = Harmonic found between sequences D and E within the five possible periods 91 = Star identified as RGB in Tisserand et al. (2009A&A...501..985T) 92 = Star identified as DY Per in Tisserand et al. (2009A&A...501..985T)
Acknowledgements: Maxime Spano, maxime.spano (at)unige.ch References: Tisserand et al., 2009A&A...501..985T
(End) Maxime Spano [Geneva Observatory], Patricia Vannier [CDS] 06-Oct-2011
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