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J/AJ/153/170  The M33 Synoptic Stellar Survey. II. Mira variables  (Yuan+, 2017)

The M33 Synoptic Stellar Survey. II. Mira variables. Yuan W., He S., Macri L.M., Long J., Huang J.Z. <Astron. J., 153, 170-170 (2017)> =2017AJ....153..170Y (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, nearby ; Stars, variable ; Photometry, RI Keywords: methods: statistical - stars: variables: general Abstract: We present the discovery of 1847 Mira candidates in the Local Group galaxy M33 using a novel semi-parametric periodogram technique coupled with a random forest classifier. The algorithms were applied to ∼2.4*105 I-band light curves previously obtained by the M33 Synoptic Stellar Survey. We derive preliminary period-luminosity relations at optical, near-infrared, and mid-infrared wavelengths and compare them to the corresponding relations in the Large Magellanic Cloud. Description: We carried out a search for Mira variables in M33 using sparsely sampled I-band light curves. We based our search on the observations of M33 obtained by Macri et al. 2001 (Cat. J/AJ/121/861) and Pellerin et al. 2011 (Cat. J/ApJS/193/26). These surveys covered most of the disk of this galaxy with a combined baseline of nearly a decade (1996 September to 1999 November for Macri et al. 2001, Cat. J/AJ/121/861; 2002 August to 2006 August for Pellerin et al. 2011, Cat. J/ApJS/193/26) mainly using the Fred L. Whipple Observatory (FLWO) 1.2m and the WIYN observatory 3.5m telescopes with a variety of cameras (see the respective publications for details). While images were obtained in multiple bandpasses (BVI), our analysis is only based on the I-band time-series photometry because Mira candidates fall below the detection limit in the bluer bands. Our final sample consists of 1847 Mira candidates (see Table2). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 113 1847 Mira candidates
See also: J/AJ/152/164 : I-band light curves of OGLE LMC Miras (He+, 2016) J/AJ/149/117 : LMC infrared survey. I. Photometry of Cepheids (Macri+, 2015) J/AcA/63/21 : VI light curves of Galactic LPVs (Soszynski+, 2013) J/AcA/61/217 : Light curves of SMC long-period variables (Soszynski+, 2011) J/ApJS/193/26 : The M33 synoptic stellar survey. I. (Pellerin+, 2011) J/ApJ/705/1364 : MIR catalog of point sources in M33 (Thompson+, 2009) J/AcA/59/239 : Light curves of LMC long-period variables (Soszynski+, 2009) J/MNRAS/386/313 : IR observations of Mira variables (Whitelock+, 2008) J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006) J/AJ/121/861 : BVI photometry of central part of M33 (Macri+, 2001) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 16 A16 --- M33SSSJ IAU-standard identifier (M33SSSJ) 18- 25 F8.5 deg RAdeg Right Ascension in decimal degrees (J2000) 27- 34 F8.5 deg DEdeg Declination in decimal degrees (J2000) 36- 41 F6.1 d Per [101.4/1555.8] Best-fit period 43- 47 F5.1 d e_Per [0.2/145.4] 1σ uncertainty in Per 49- 53 F5.2 mag <Imag> [16.93/21.45] Mean I-band magnitude 55- 58 F4.2 mag e_<Imag> [0.02/0.6] 1σ uncertainty in <I> 60- 63 F4.2 mag Amp [0.6/5.66] Amplitude of best-fit periodic component (AP) 65- 68 F4.2 mag e_Amp [0.01/1] 1σ uncertainty in Amp 70- 74 F5.2 mag Imin [16.13/20.83] Brightest I-band magnitude of the best-fit model light curve (Im) 76- 79 F4.2 mag e_Imin [0.01/1.02] 1σ uncertainty in Imin 81 A1 --- Cl [OC] Mira subclass (C=C-rich, or O=O-rich) (1) 83- 85 I3 --- N [10/168] Number of measurements in light curve 87- 90 F4.2 mag A [0.79/5.22] Magnitude range spanned by light curve data 92- 97 F6.1 d Dt [362.9/3235] Time range spanned by light curve data (Δt) 99-104 F6.1 d T0 [322.9/3307.1] Time of maximum light for the periodic component, in MJD (T0) 106-113 A8 --- photID Internal photometric identification
Note (1): We classified 1581 and 266 objects as O-rich and C-rich, respectively.
History: From electronic version of the journal References: Pellerin et al., Paper I 2011ApJS..193...26P, Cat. J/ApJS/193/26
(End) Sylvain Guehenneux [CDS] 02-Aug-2017
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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