J/AJ/163/192 807 Mira variable stars photometry in Magellanic Clouds (Ou+, 2022)
Difference of Photometric Properties between Regular and Nonregular Miras in the
Magellanic Clouds.
Ou J.-Y., Ngeow C.-C.
<Astron. J., 163, 192 (2022)>
=2022AJ....163..192O 2022AJ....163..192O
ADC_Keywords: Magellanic Clouds; Stars, variable; Photometry, RI
Keywords: Mira variable stars ; Periodic variable stars ; Pulsating
variable stars ; Long period variable stars
Abstract:
Mira variables are asymptotic giant-branch pulsating stars with long
pulsation periods and large amplitudes in optical bands. By applying
the random forest algorithm to the I-band light curves for the Miras
in the Magellanic Clouds, we have classified these Miras into regular
Miras and nonregular Miras. Nonregular Miras exhibit a long-term
variation in addition to their primary pulsation periods. Our results
confirm that the period-luminosity relation for maximum light has a
small dispersion, but only occurs on the regular oxygen-rich Miras,
which we recommend to be applied in future distance-scale work. We
have also collected multiband photometry for these Miras to perform a
spectral energy distribution fitting with stellar and dust components,
showing that a significant fraction of dust is present around the
nonregular Miras. According to our results, we believe that the
periodic long-term variations seen in the nonregular Miras might be
due to the presence of dust.
Description:
We retrieved the OGLE-III I-band light curves for 1663 and 352 Miras
in the LMC and SMC, respectively, classified by the OGLE team. These
photometric data cover the time span between 3000 to 4500days.
Objects:
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RA (2000) DE Designation(s)
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03 00 -71 00 Magellanic Clouds = NAME Magellanic Clouds
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 80 711 Summaries of photometric properties for regular
Miras
table3.dat 50 854 Periods of nonregular Miras
table5.dat 60 361 Results of the SEDs fitting for the regular and
multi-periodic Miras
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
I/297 : NOMAD Catalog (Zacharias+ 2005)
I/305 : The Guide Star Catalog, Version 2.3.2 (GSC2.3) (STScI, 2006)
I/317 : The PPMXL Catalog (Roeser+ 2010)
I/319 : XPM Catalog of positions and proper motions (Fedorov+ 2011)
I/320 : SPM 4.0 Catalog (Girard+, 2011)
I/322 : UCAC4 Catalogue (Zacharias+, 2012)
II/328 : AllWISE Data Release (Cutri+ 2013)
I/331 : Absolute Proper motions Outside the Plane (APOP) (Qi+, 2015)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/339 : Hot Stuff for One Year (HSOY) (Altmann+, 2017)
I/340 : UCAC5 Catalogue (Zacharias+ 2017)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
II/358 : SkyMapper Southern Sky Survey. DR1.1 (Wolf+, 2018)
II/363 : The band-merged unWISE Catalog (Schlafly+, 2019)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020)
I/353 : The Guide Star Catalog, Version 2.4.2 (GSC2.4.2) (STScI, 2020)
II/369 : VEXAS DR2 catalogs (Khramtsov+, 2021)
II/365 : The CatWISE2020 catalog (updated version 28-Jan-2021) (Marocco+, 2021)
J/AJ/118/1043 : Herbig Ae/Be stars catalog (Herbst+, 1999)
J/A+A/377/945 : Variability and spectra of LMC giants (Cioni+ 2001)
J/MNRAS/386/313 : IR observations of Mira variables (Whitelock+, 2008)
J/AcA/59/239 : VI light curves of LMC long-period variables (Soszynski+, 2009)
J/ApJ/723/1195 : SAGE AGB candidates (Riebel+, 2010)
J/AcA/61/217 : VI light curves of SMC long-period variables (Soszynski+, 2011)
J/AJ/154/149 : LMC NIR synoptic survey. V. NIR photometry Miras (Yuan+, 2017)
J/ApJ/867/105 : ATLAS all-sky stellar ref. cat, ATLAS-REFCAT2 (Tonry+, 2018)
J/ApJ/884/20 : OGLE-III Mira variables in Magellanic Clouds (Bhardwaj+, 2019)
J/ApJ/904/13 : Radial velocity for 10giant eclipsing binaries (Graczyk+, 2020)
J/ApJS/252/23 : E(V-I) reddening map MCs from OGLE-IV RC stars (Skowron+, 2021)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- ID MIRA ID
20- 25 A6 --- Spectra Spectra type of Mira
27- 32 F6.2 d Per [103/923] Period of Mira
34- 38 F5.2 mag maxmag [10.1/20.6] Average OGLE-III I-band magnitude of
maximum light
40- 43 F4.2 mag e_maxmag [0/0.51] Standard deviation of maximum light
45- 49 F5.2 mag mag [13/21] Average OGLE-III I-band magnitude of mean
light
51- 54 F4.2 mag e_mag [0/0.73] Standard deviation of mean light
56- 60 F5.2 mag minmag [13.3/21.7] Average OGLE-III I-band magnitude of
minimum light
62- 65 F4.2 mag e_minmag [0/0.62] Standard deviation of minimum light
67- 71 F5.3 mag E(V-I) [0.01/0.48] E(V-I)
73- 80 F8.1 d Pmin [-1214/900676]?=0.0 Period of minimum light
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- ID Mira ID
20- 25 A6 --- Spectra Spectra of Mira (either O-rich or C-rich)
27- 33 F7.2 d Ps [158/1792] Period of short term variation
35- 42 F8.2 d Pl [358/13493] Period of long term variation
44- 50 F7.2 d Polge [158/1859] Period from OGLE III
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- ID Mira ID
20- 25 A6 --- Spectra Spectra type of Mira (either O-rich or C-rich)
27- 27 A1 --- Type R is for regular Mira, N is for non-regular Mira
29- 35 F7.2 K Temp [1800/4000] Temperature of star part
37- 43 F7.2 Rsun Rad [10/953] Radius of stars part, solar units
45- 51 F7.2 K Tempd [10/2000] Temperature of dust part
53- 60 F8.2 Rsun Radd [10/20000] Radius of dust part, solar units
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 08-Aug-2022