J/MNRAS/437/2702 MC Cepheids, RR Lyrae stars and binaries (Moretti+, 2014)
The VMC Survey.
X. Cepheids, RR Lyrae stars and binaries as probes of the Magellanic
System's structure.
Moretti M.I., Clementini G., Muraveva T., Ripepi V., Marquette J.B.,
Cioni M.-R.L., Marconi M., Girardi L., Rubele S., Tisserand P.,
De Grijs R., Groenewegen M.A.T., Guandalini R., Ivanov V.D., van Loon J.T.
<Mon. Not. R. Astron. Soc., 437, 2702-2719 (2014)>
=2014MNRAS.437.2702M 2014MNRAS.437.2702M
ADC_Keywords: Magellanic Clouds ; Stars, variable
Keywords: surveys - binaries: eclipsing - stars: variables: Cepheids -
stars: variables: RR Lyrae - galaxies: distances and redshifts -
Magellanic Clouds
Abstract:
The VISTA near-infrared Y, J, Ks survey of the Magellanic System (VMC)
survey is obtaining multi-epoch photometry in the Ks band of the
Magellanic System down to a limiting magnitude of Ks∼19.3 for
individual epoch data. The observations are spaced in time such as to
provide optimal sampling of the light curves for RR Lyrae stars and
for Cepheids with periods up to 20-30d. We present examples of the
Ks-band light curves of Classical Cepheids and RR Lyrae stars we are
obtaining from the VMC data and outline the strategy we put in place
to measure distances and infer the System three-dimensional geometry
from the variable stars. For this purpose, the near-infrared
Period-Luminosity, Period-Wesenheit and Period-Luminosity-Colour
relations of the system RR Lyrae stars and Cepheids are used. We
extensively exploit the catalogues of the Magellanic Clouds' variable
stars provided by the EROS-2 and OGLE III/IV microlensing surveys. By
combining these surveys, we present the currently widest-area view of
the Large Magellanic Cloud as captured by the galaxy Cepheids, RR
Lyrae stars and binaries. This reveals the full extent of the main
structures (bar/s - spiral arms) that have only been vaguely guessed
before. Our work strengthens the case for a detailed study of the
Large Magellanic Cloud three-dimensional geometry.
Description:
Full 12-epoch time series were obtained for 19 VMC tiles, as of 2013
July: 10 in the LMC, four in the SMC, three in the Bridge and two in
the Stream.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 98 25 Counter-identification (VMC-OGLE_IV-EROS-2) and
properties of the Cepheids in the LMC 8_8 tile
(South Ecliptic Pole)
table3.dat 109 240 Counter-identification (VMC-OGLE_IV-EROS-2) and
properties of the RR Lyrae stars in the
VMC LMC 8_8 tile (South Ecliptic Pole)
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See also:
J/A+A/566/A43 : EPOCH Project. EROS-2 LMC periodic variables (Kim+, 2014)
J/AcA/62/219 : OGLE: Gaia South Ecliptic Pole Field (Soszynski+, 2012)
J/A+A/531/A157 : LMC planetary nebulae (VMC Survey II) (Miszalski+, 2011)
J/A+A/537/A105 : Modelisation of AGB stars in the LMC (Gullieuszik+, 2012)
J/MNRAS/424/1807 : VISTA Magellanic Cloud Survey. V. Cepheids (Ripepi+, 2012)
J/A+A/549/A29 : Quasars behind the Magellanic system (Cioni+, 2013)
J/A+A/554/A33 : VMC Survey. VII. 30 Doradus reddening map (Tatton+, 2013)
J/MNRAS/437/2307 : LMC anomalous Cepheid Ks light curves (Ripepi+, 2014)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [VMC-]
5- 23 A19 --- VMC Vista Magellanic Cloud designation
(JHHMMSS.ss+DDMMSS.s)
25- 38 A14 --- OGLEIV OGLE IV designation (LMCNNN.NN.NNNN)
40- 44 A5 --- TypeO OGLE IV classification type (DCEP, ECL, OTHER)
47- 51 A5 --- ModeO OGLE IV pulsation mode (2)
54- 62 F9.7 d PerO ? OGLE IV period
66- 78 A13 --- EROS EROS designation (lmNNNNaNNNN)
79- 86 F8.6 d Per ? EROS period
87 A1 --- n_Per [a] Note on Per (1)
89- 92 A4 --- Type Classification type (DCEP or ECL)
94- 97 A4 --- Mode Pulsation mode (Paper V + this work) (2)
98 A1 --- n_Mode [b] Note on Mode (1)
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Note (1): Notes as follows:
a = The analysis of the EROS-2 light curves revealed that this is a
double-mode Cepheid with a secondary period of 1.768788d, in good
agreement with Marquette et al. (2009A&A...495..249M 2009A&A...495..249M, Cat. J/A+A/495/249).
b = The periods and luminosities place these two variable stars in the
Cepheid domain and thus they were classified as such in Paper V
(Ripepi et al. 2012, J/MNRAS/424/1807). However, the EROS-2 light
curves show a very small amplitude of the order of about 0.1mag.
Note (2): the modes use F=Fundamental, FO=1str overtone, 2O=2nd overtone,
or Spots (non-RR Lyr stars)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [VMC-]
5- 23 A19 --- VMC VMC designation (JHHMMSS.ss+DDMMSS.s)
25- 39 A15 --- OGLEIV OGLE IV designation (LMCNNN.NN.NNNNN)
41- 45 A5 --- TypeO OGLE IV classification type
47- 57 F11.7 d Per1O ?=9.999 Primary OGLE IV period
61- 68 F8.6 d Per2O ?=9.999 Secondary OGLE IV period
70- 82 A13 --- EROS2 EROS3 designation (lmNNNNaNNNN)
83- 86 A4 --- Type Classification type performed in this work
88- 99 F12.7 d Per1 ?=9.999 Primary EROS-2 period
101-109 F9.7 d Per2 ?=9.999 Secondary period found in this work
using EROS-2 data
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History:
From electronic version of the journal
References:
Cioni et al. Paper I 2011A&A...527A.116C 2011A&A...527A.116C
Miszalski et al. Paper II 2011A&A...531A.157M 2011A&A...531A.157M Cat. J/A+A/531/A157
Gullieuszik et al. Paper III 2012A&A...537A.105G 2012A&A...537A.105G Cat. J/A+A/537/A105
Rubele et al. Paper IV 2012A&A...537A.106R 2012A&A...537A.106R
Ripepi et al. Paper V 2012MNRAS.424.1807R 2012MNRAS.424.1807R Cat. J/MNRAS/424/1807
Cioni et al. Paper VI 2013A&A...549A..29C 2013A&A...549A..29C Cat. J/A+A/549/A29
Tatton et al. Paper VII 2013A&A...554A..33T 2013A&A...554A..33T Cat. J/A+A/554/A33
Moretti et al. Paper VIII 2014MNRAS.437.2307R 2014MNRAS.437.2307R Cat. J/MNRAS/437/2307
Cioni et al. Paper IX 2014A&A...562A..32C 2014A&A...562A..32C
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Groenewegen et al. Paper XXXIII 2019A&A...622A..63G 2019A&A...622A..63G
(End) Patricia Vannier [CDS] 26-Nov-2014