J/ApJ/832/176 Classical Cepheids in MCs. I. LMC disk (Inno+, 2016)
The panchromatic view of the Magellanic Clouds from classical Cepheids.
I. Distance, reddening, and geometry of the Large Magellanic Cloud disk.
Inno L., Bono G., Matsunaga N., Fiorentino G., Marconi M., Lemasle B.,
da Silva R., Soszynski I., Udalski A., Romaniello M., Rix H.-W.
<Astrophys. J., 832, 176-176 (2016)>
=2016ApJ...832..176I 2016ApJ...832..176I (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Stars, variable ; Photometry, VRI ;
Photometry, infrared ; Reddening ; Stars, distances
Keywords: Magellanic Clouds; stars: distances; stars: oscillations;
stars: variables: Cepheids
Abstract:
We present a detailed investigation of the Large Magellanic Cloud
(LMC) disk using classical Cepheids. Our analysis is based on optical
(I, V; OGLE-IV), near-infrared (NIR: J, H, KS) and mid-infrared
(MIR: w1; WISE) mean magnitudes. By adopting new templates to estimate
the NIR mean magnitudes from single-epoch measurements, we build the
currently most accurate, largest, and homogeneous multi-band data set
of LMC Cepheids. We determine Cepheid individual distances using
optical and NIR Period-Wesenheit relations (PWRs), to measure the
geometry of the LMC disk and its viewing angles. Cepheid distances
based on optical PWRs are precise at 3%, but accurate to 7%, while the
ones based on NIR PWRs are more accurate (to 3%), but less precise
(2%-15%), given the higher photometric error on the observed
magnitudes. We found an inclination of
i=25.05±0.02(stat.)±0.55(syst.)°, and a position angle of the
lines of nodes P.A.=150.76±0.02(stat.)±0.07(syst.)°. These
values agree well with estimates based either on young (Red
Supergiants) or on intermediate-age (Asymptotic Giant Branch, Red
Clump) stellar tracers, but they significantly differ from evaluations
based on old (RR Lyrae) stellar tracers. This indicates that
young/intermediate and old stellar populations have different spatial
distributions. Finally, by using the reddening-law fitting approach,
we provide a reddening map of the LMC disk, which is 10 times more
accurate and 2 times larger than similar maps in the literature. We
also found an LMC true distance modulus of
µ0,LMC=18.48±0.10(stat. and syst.)mag, in excellent agreement
with the currently most accurate measurement.
Description:
We cross-matched the LMC Cepheid catalog from OGLE-IV (Soszynski+,
2015AcA....65..297S 2015AcA....65..297S) with the ALLWISE-Mep catalog, in order to
complement our data with MIR ([3.4]um) time-series data.
See table 9 for subsamples references.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table9.dat 214 3920 Catalog of optical-NIR-MIR measurements for
Large Magellanic Cloud (LMC) Cepheids
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See also:
I/221 : The Magellanic Catalogue of Stars - MACS (Tucholke+ 1996)
II/328 : AllWISE Data Release (Cutri+ 2013)
II/305 : SAGE LMC and SMC IRAC Source Catalog (IPAC 2009)
II/288 : IRSF Magellanic Clouds Point Source Catalog (Kato+ 2007)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
IV/33 : Master Catalogue towards the Magellanic Clouds (MC2) (Delmotte+ 2002)
II/228 : DENIS Catalogue toward Magellanic Clouds (DCMC) (Cioni+ 2000)
J/A+A/580/A18 : Carina Project VIII. α-element abund. (Fabrizio+, 2015)
J/A+A/576/A30 : NIR light-curve templates for classical Cepheids (Inno+, 2015)
J/AJ/149/117 : LMC infrared survey. I. Photometry of Cepheids (Macri+, 2015)
J/MNRAS/446/3034 : LMC Type II Cepheids J and Ks light curves (Ripepi+, 2015)
J/MNRAS/438/2440 : Fourier analysis of 13095 LMC RR Lyr stars (Deb+, 2014)
J/A+A/550/A70 : Galactic & MC Cepheids distance (Groenewegen 2013)
J/MNRAS/424/1807 : VISTA Magellanic Cloud Survey. V. Cepheids (Ripepi+, 2012)
J/AcA/61/285 : VI light curves of Galactic Bulge Cepheids (Soszynski+, 2011)
J/A+A/534/A95 : LMC Cepheids radial velocities (Storm+, 2011)
J/AJ/142/61 : RGB stars in LMC outer disk (Carrera+, 2011)
J/ApJ/743/76 : Spitzer photometry of LMC Cepheids (Scowcroft+, 2011)
J/ApJ/715/277 : Insights into the Cepheid distance scale (Bono+, 2010)
J/MNRAS/397/933 : LMC type II Cepheids JHKs magnitudes (Matsunaga+, 2009)
J/ApJ/679/71 : Mid-IR period-luminosity relations (Freedman+, 2008)
J/AcA/58/163 : VI light curves of LMC classical Cepheids (Soszynski+, 2008)
J/A+A/476/73 : Calibration of Cepheid Per/Lum relation (Fouque+, 2007)
J/AJ/128/2239 : JHKs photometry of 92 LMC Cepheids (Persson+, 2004)
J/A+A/411/361 : VI photometry of extra-galactic Cepheids (Kanbur+, 2003)
J/ApJS/142/71 : BVRI observations of LMC Cepheids (Sebo+, 2002)
J/AcA/51/317 : OGLE DIA. Catalog of LMC and SMC images (Zebrun+, 2001)
J/AcA/50/307 : OGLE LMC BVI photometry (Udalski+, 2000)
J/AcA/49/543 : OGLE LMC + SMC Cepheids VI photometry (Pietrzynski+, 1999)
J/AcA/49/223 : BVI photometry of OGLE LMC Cepheids (Udalski+, 1999)
Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- ID Stellar identifier (1)
19- 20 A2 --- Mod Stellar mode ("FO"=first overtone: 1645 instances;
"FU"=fundamental mode; 2275 instances)
22- 29 A8 --- Set Sub-sample Cepheid belongs to (2)
31- 40 E10.4 d Per [0.2/99.2] Period
42- 50 E9.3 mag Imag [0/99.9]? Mean I band intensity transformed
into mags (3)
52- 60 E9.3 mag Vmag [0/20.3]? Mean V band intensity transformed
into mags (3)
62- 71 E10.4 mag Jmag [0/104]? Mean J band intensity transformed
into mags
73- 79 E7.1 mag e_Jmag [0/10]? Error in Jmag
81- 90 E10.4 mag Hmag [9/102]? Mean H band intensity transformed
into mags
92- 98 E7.1 mag e_Hmag [0.006/10]? Error in Hmag
100-109 E10.4 mag Ksmag [0/101]? Mean Ks band intensity transformed
into mags
111-117 E7.1 mag e_Ksmag [0/10]? Error in Ksmag
119-131 E13.7 deg RAdeg Right Ascension in decimal degrees (J2000)
133-146 E14.7 deg DEdeg Declination in decimal degrees (J2000)
148-157 E10.4 mag w1mag [8.5/16.3]? Mean WISE W1 (3.35um) band intensity
transformed into mags
159-165 E7.1 mag e_w1mag [0.003/0.3]? Error in w1mag
167-167 A1 --- f_w1mag Flag on w1mag (4)
169-171 I3 --- o_w1mag [3/211]? Number of epochs available in w1mag
173-181 E9.3 mag DM [17.3/19.1]? Distance modulus (5)
183-189 E7.1 mag e_DM [0.003/0.1]? Error in DM
191-198 E8.1 mag E(B-V) [-0.3/1.1]? The (B-V) color excess (5)
200-206 E7.1 mag e_E(B-V) [0.002/0.05]? Error in E(B-V)
208-214 E7.1 --- chi2 [0.1/4100]? The Χ2 of the reddening-law fit
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Note (1): The Harvard Variable catalog ID for the first ten Cepheids, and
the OGLE ID for all the others in the OGLE catalog.
Note (2): As defined in Table 1. Sample as follows:
2MASS = Skrutskie+ 2006, VII/233 (1108 instances)
CPAP = CPAPIER; Macri+, 2015, J/AJ/149/117;
<[MNK2015] DDD.ddddd+DD.ddddd> in Simbad (116 instances)
IRSF = IRSF/SIRIUS Survey; Kato+ 2007, II/288 (2353 instances)
P04 = Persson+, 2004, J/AJ/128/2239 (66 instances)
VMC = Vista Survey for the Magellanic Clouds; Cioni+ 2011A&A...527A.116C 2011A&A...527A.116C
(11 instances)
VMC/CPAP = (169 instances)
VMC/IRSF = (97 instances)
Note (3): Where 0.0 = not observed.
Note (4): Flag as follows:
Y = w1mag was obtained by performing the Fourier-fit.
N = w1mag was obtained by adopting the error-weighted mean of
the observed magnitudes.
Note (5): Obtained by adopting the reddening-fit method.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 24-Feb-2017