J/MNRAS/449/639 VMC survey. XIV. SFR in SMC (Rubele+, 2015)
The VMC survey.
XIV. First results on the look-back time star formation rate tomography of the
Small Magellanic Cloud.
Rubele S., Girardi L., Kerber L., Cioni M.-R.L., Piatti A.E., Zaggia S.,
Bekki K., Bressan A., Clementini G., De Grijs R., Emerson J.P.,
Groenewegen M.A.T., Ivanov V.D., Marconi M., Marigo P., Moretti M.-I.,
Ripepi V., Subramanian S., Tatton B.L., Van Loon J.T.
<Mon. Not. R. Astron. Soc., 449, 639-661 (2015)>
=2015MNRAS.449..639R 2015MNRAS.449..639R (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Stars, distances ; Extinction
Keywords: Hertzsprung-Russell and colour-magnitude diagrams - Magellanic Clouds
Abstract:
We analyse deep images from the VISTA survey of the Magellanic Clouds
in the YJKs filters, covering 14deg2 (10 tiles), split into 120
subregions, and comprising the main body and Wing of the Small
Magellanic Cloud (SMC). We apply a colour-magnitude diagram
reconstruction method that returns their best-fitting star formation
rate SFR(t), age-metallicity relation (AMR), distance and mean
reddening, together with 68 percent confidence intervals. The distance
data can be approximated by a plane tilted in the East-West direction
with a mean inclination of 39°, although deviations of up to
±3kpc suggest a distorted and warped disc. After assigning to every
observed star a probability of belonging to a given age-metallicity
interval, we build high-resolution population maps. These dramatically
reveal the flocculent nature of the young star-forming regions and the
nearly smooth features traced by older stellar generations. They
document the formation of the SMC Wing at ages <0.2Gyr and the peak of
star formation in the SMC Bar at ∼40Myr. We clearly detect periods of
enhanced star formation at 1.5 and 5Gyr. The former is possibly
related to a new feature found in the AMR, which suggests ingestion of
metal-poor gas at ages slightly larger than 1Gyr. The latter
constitutes a major period of stellar mass formation. We confirm that
the SFR(t) was moderately low at even older ages.
Description:
All data used in this work come from the VMC survey, which is
extensively described in Cioni et al. (2011A&A...527A.116C 2011A&A...527A.116C). We use
the v1.1 and v1.2 VMC data retrieved from the VISTA Science Archive
(VSA, http://horus.roe.ac.uk/vsa/).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 81 108 Mean distances and extinctions for each subregion
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See also:
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)
J/MNRAS/437/2702 : MC Cepheids, RR Lyrae stars and binaries (Moretti+, 2014)
J/MNRAS/446/3034 : LMC Type II Cepheids J and Ks light curves (Ripepi+, 2015)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Tile SMC tile
5- 6 I2 --- G Subregion, within the tile
8- 18 F11.8 deg RAdeg Right ascension (J2000)
20- 31 F12.8 deg DEdeg Declination (J2000)
33- 37 F5.2 mag mu0 Dereddened distance modulus
39- 42 F4.2 mag e_mu0 Error on mu0 (lower value)
44- 47 F4.2 mag E_mu0 Error on mu0 (upper value)
49- 53 F5.2 kpc d Distance
55- 58 F4.2 kpc e_d Error on d (lower value)
60- 63 F4.2 kpc E_d Error on d (upper value)
65- 69 F5.3 mag AV Extinction in V band
71- 75 F5.3 mag e_AV Error on AV (lower value)
77- 81 F5.3 mag E_AV Error on AV (upper value)
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History:
From electronic version of the journal
References:
Cioni et al. 2011Msngr.144...25C 2011Msngr.144...25C
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
Gullieuszik et al. Paper III 2012A&A...537A.105G 2012A&A...537A.105G
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/549/29
Tatton et al. Paper VII 2013A&A...554A..33T 2013A&A...554A..33T Cat. J/A+A/554/A33
Ripepi 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
Moretti et al. Paper X 2014MNRAS.437.2702M 2014MNRAS.437.2702M Cat. J/MNRAS/437/2702
Li et al. Paper XI 2014ApJ...790...35L 2014ApJ...790...35L
Piatti et al. Paper XII 2014A&A...570A..74P 2014A&A...570A..74P
Ripepi et al. Paper XIII 2015MNRAS.446.3034R 2015MNRAS.446.3034R Cat. J/MNRAS/446/3034
Rubele et al. Paper XIV 2015MNRAS.449..639R 2015MNRAS.449..639R This Catalog
Piatti et al. Paper XV 2015MNRAS.450..552P 2015MNRAS.450..552P
Piatti et al. Paper XVI 2015MNRAS.454..839P 2015MNRAS.454..839P Cat. J/MNRAS/454/839
Cioni et al. Paper XVII 2016A&A...586A..77C 2016A&A...586A..77C
Zhang et al. Paper XVIII 2015ApJ...815...95Z 2015ApJ...815...95Z
Ripepi et al. Paper XIX 2016ApJS..224...21R 2016ApJS..224...21R Cat. J/ApJS/224/21
Moretti et al. Paper XX 2016MNRAS.459.1687M 2016MNRAS.459.1687M Cat. J/MNRAS/459/1687
Piatti et al. Paper XXI 2016MNRAS.460..383P 2016MNRAS.460..383P
Sun et al. Paper XXII 2017ApJ...835..171S 2017ApJ...835..171S
Marconi et al. Paper XXIII 2017MNRAS.466.3206M 2017MNRAS.466.3206M
Subramanian et al. Paper XXIV 2017MNRAS.467.2980S 2017MNRAS.467.2980S
Ripepi et al. Paper XXV 2017MNRAS.472..808R 2017MNRAS.472..808R
Muraveva et al. Paper XXVI 2018MNRAS.473.3131M 2018MNRAS.473.3131M
Sun et al. Paper XXVII 2017ApJ...849..149S 2017ApJ...849..149S Cat. J/ApJ/849/149
Niederhofer et al. Paper XXVIII 2018A&A...612A.115N 2018A&A...612A.115N
Sun et al. Paper XXIX 2018ApJ...858...31S 2018ApJ...858...31S This catalog
Niederhofer et al. Paper XXX 2018A&A...613L...8N 2018A&A...613L...8N
Rubele et al. Paper XXXI 2018MNRAS.478.5017R 2018MNRAS.478.5017R
Zivkov et al. Paper XXXII 2018A&A...620A.143Z 2018A&A...620A.143Z
Groenewegen et al. Paper XXXIII 2019A&A...622A..63G 2019A&A...622A..63G
(End) Patricia Vannier [CDS] 10-Nov-2015