The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud

Smitha Subramanian, Stefano Rubele, Ning-Chen Sun, Leo Girardi, Richard de Grijs, Jacco Th. van Loon, Maria-Rosa L. Cioni, Andres E. Piatti, Kenji Bekki, Jim Emerson, Valentin D. Ivanov, Leandro Kerber, Marcella Marconi, Vincenzo Ripepi, Benjamin L. Tatton

Research output: Contribution to journalArticle

Abstract

We study the luminosity function of intermediate-age red clump stars using deep, near-infrared photometric data covering similar to 20 deg(2) located throughout the central part of the Small Magellanic Cloud (SMC), comprising the main body and the galaxy's eastern wing, based on observations obtained with the VISTA Survey of the Magellanic Clouds (VMC). We identified regions that show a foreground population (similar to 11.8 +/- 2.0 kpc in front of the main body) in the form of a distance bimodality in the red clump distribution. The most likely explanation for the origin of this feature is tidal stripping from the SMC rather than the extended stellar haloes of the Magellanic Clouds and/or tidally stripped stars from the Large Magellanic Cloud. The homogeneous and continuous VMC data trace this feature in the direction of the Magellanic Bridge and, particularly, identify (for the first time) the inner region (similar to 2-2.5 kpc from the centre) from where the signatures of interactions start becoming evident. This result provides observational evidence of the formation of the Magellanic Bridge from tidally stripped material from the SMC.

Original languageEnglish
Pages (from-to)2980-2995
Number of pages16
JournalMonthly Notices of the Royal Astronomical Society
Volume467
Issue number3
DOIs
Publication statusPublished - Jun 2017

Cite this

Subramanian, S., Rubele, S., Sun, N-C., Girardi, L., de Grijs, R., van Loon, J. T., ... Tatton, B. L. (2017). The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 467(3), 2980-2995. https://doi.org/10.1093/mnras/stx205
Subramanian, Smitha ; Rubele, Stefano ; Sun, Ning-Chen ; Girardi, Leo ; de Grijs, Richard ; van Loon, Jacco Th. ; Cioni, Maria-Rosa L. ; Piatti, Andres E. ; Bekki, Kenji ; Emerson, Jim ; Ivanov, Valentin D. ; Kerber, Leandro ; Marconi, Marcella ; Ripepi, Vincenzo ; Tatton, Benjamin L. / The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud. In: Monthly Notices of the Royal Astronomical Society. 2017 ; Vol. 467, No. 3. pp. 2980-2995.
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abstract = "We study the luminosity function of intermediate-age red clump stars using deep, near-infrared photometric data covering similar to 20 deg(2) located throughout the central part of the Small Magellanic Cloud (SMC), comprising the main body and the galaxy's eastern wing, based on observations obtained with the VISTA Survey of the Magellanic Clouds (VMC). We identified regions that show a foreground population (similar to 11.8 +/- 2.0 kpc in front of the main body) in the form of a distance bimodality in the red clump distribution. The most likely explanation for the origin of this feature is tidal stripping from the SMC rather than the extended stellar haloes of the Magellanic Clouds and/or tidally stripped stars from the Large Magellanic Cloud. The homogeneous and continuous VMC data trace this feature in the direction of the Magellanic Bridge and, particularly, identify (for the first time) the inner region (similar to 2-2.5 kpc from the centre) from where the signatures of interactions start becoming evident. This result provides observational evidence of the formation of the Magellanic Bridge from tidally stripped material from the SMC.",
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Subramanian, S, Rubele, S, Sun, N-C, Girardi, L, de Grijs, R, van Loon, JT, Cioni, M-RL, Piatti, AE, Bekki, K, Emerson, J, Ivanov, VD, Kerber, L, Marconi, M, Ripepi, V & Tatton, BL 2017, 'The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud' Monthly Notices of the Royal Astronomical Society, vol. 467, no. 3, pp. 2980-2995. https://doi.org/10.1093/mnras/stx205

The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud. / Subramanian, Smitha; Rubele, Stefano; Sun, Ning-Chen; Girardi, Leo; de Grijs, Richard; van Loon, Jacco Th.; Cioni, Maria-Rosa L.; Piatti, Andres E.; Bekki, Kenji; Emerson, Jim; Ivanov, Valentin D.; Kerber, Leandro; Marconi, Marcella; Ripepi, Vincenzo; Tatton, Benjamin L.

In: Monthly Notices of the Royal Astronomical Society, Vol. 467, No. 3, 06.2017, p. 2980-2995.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud

AU - Subramanian, Smitha

AU - Rubele, Stefano

AU - Sun, Ning-Chen

AU - Girardi, Leo

AU - de Grijs, Richard

AU - van Loon, Jacco Th.

AU - Cioni, Maria-Rosa L.

AU - Piatti, Andres E.

AU - Bekki, Kenji

AU - Emerson, Jim

AU - Ivanov, Valentin D.

AU - Kerber, Leandro

AU - Marconi, Marcella

AU - Ripepi, Vincenzo

AU - Tatton, Benjamin L.

PY - 2017/6

Y1 - 2017/6

N2 - We study the luminosity function of intermediate-age red clump stars using deep, near-infrared photometric data covering similar to 20 deg(2) located throughout the central part of the Small Magellanic Cloud (SMC), comprising the main body and the galaxy's eastern wing, based on observations obtained with the VISTA Survey of the Magellanic Clouds (VMC). We identified regions that show a foreground population (similar to 11.8 +/- 2.0 kpc in front of the main body) in the form of a distance bimodality in the red clump distribution. The most likely explanation for the origin of this feature is tidal stripping from the SMC rather than the extended stellar haloes of the Magellanic Clouds and/or tidally stripped stars from the Large Magellanic Cloud. The homogeneous and continuous VMC data trace this feature in the direction of the Magellanic Bridge and, particularly, identify (for the first time) the inner region (similar to 2-2.5 kpc from the centre) from where the signatures of interactions start becoming evident. This result provides observational evidence of the formation of the Magellanic Bridge from tidally stripped material from the SMC.

AB - We study the luminosity function of intermediate-age red clump stars using deep, near-infrared photometric data covering similar to 20 deg(2) located throughout the central part of the Small Magellanic Cloud (SMC), comprising the main body and the galaxy's eastern wing, based on observations obtained with the VISTA Survey of the Magellanic Clouds (VMC). We identified regions that show a foreground population (similar to 11.8 +/- 2.0 kpc in front of the main body) in the form of a distance bimodality in the red clump distribution. The most likely explanation for the origin of this feature is tidal stripping from the SMC rather than the extended stellar haloes of the Magellanic Clouds and/or tidally stripped stars from the Large Magellanic Cloud. The homogeneous and continuous VMC data trace this feature in the direction of the Magellanic Bridge and, particularly, identify (for the first time) the inner region (similar to 2-2.5 kpc from the centre) from where the signatures of interactions start becoming evident. This result provides observational evidence of the formation of the Magellanic Bridge from tidally stripped material from the SMC.

KW - stars: individual: red clump stars

KW - galaxies: interactions

KW - Magellanic Clouds

KW - STAR-FORMATION HISTORY

KW - DISTANCES PUBLICATION BIAS

KW - CLUMP ABSOLUTE MAGNITUDE

KW - RED CLUMP

KW - 3-DIMENSIONAL STRUCTURE

KW - CLASSICAL CEPHEIDS

KW - K-BAND

KW - BRIDGE

KW - STREAM

KW - SYSTEM

U2 - 10.1093/mnras/stx205

DO - 10.1093/mnras/stx205

M3 - Article

VL - 467

SP - 2980

EP - 2995

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -