Near-ir polarimetry around 30 doradus: I. separation of the galactic sources

Jaeyeong Kim; Soojong Pak; Minho Choi; Wonseok Kang; Ryo Kandori; Motohide Tamura; Tetsuya Nagata; Jungmi Kwon; Daisuke Kato; Daniel T. Jaffe

doi:10.5303/JKAS.2011.44.4.135

Near-ir polarimetry around 30 doradus: I. separation of the galactic sources

Jaeyeong Kim
, Soojong Pak
, Minho Choi
, Wonseok Kang
, Ryo Kandori
, Motohide Tamura
, Tetsuya Nagata
, Jungmi Kwon
, Daisuke Kato
, Daniel T. Jaffe

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

A 20' × 20' region around 30 Doradus in the Large Magellanic Cloud (LMC) is observed and analyzed in the near-infrared. We obtain polarimetry data in the J, H, and K_s bands using the SIRIUS polarimeter SIRPOL at the Infrared Survey Facility 1.4 m telescope. We measure the Stokes parameters of 2562 point-like sources to derive the degree of polarization and the polarization position angles. We discuss the statistics of the groups classified by color-magnitude diagram and proper motions of the sources, in order to separate the Galactic foreground sources from those present in the LMC. We notice that groups classified by the proper motion data show a tendency towards different polarimetric properties.

Original language	English
Pages (from-to)	135-142
Number of pages	8
Journal	Journal of the Korean Astronomical Society
Volume	44
Issue number	4
DOIs	https://doi.org/10.5303/JKAS.2011.44.4.135
Publication status	Published - 2011

Keywords

Galaxies: Star clusters: Individual (30 doradus)
Infrared: ISM
Proper motions
Techniques: Polarimetric

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10.5303/JKAS.2011.44.4.135

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title = "Near-ir polarimetry around 30 doradus: I. separation of the galactic sources",

abstract = "A 20' × 20' region around 30 Doradus in the Large Magellanic Cloud (LMC) is observed and analyzed in the near-infrared. We obtain polarimetry data in the J, H, and Ks bands using the SIRIUS polarimeter SIRPOL at the Infrared Survey Facility 1.4 m telescope. We measure the Stokes parameters of 2562 point-like sources to derive the degree of polarization and the polarization position angles. We discuss the statistics of the groups classified by color-magnitude diagram and proper motions of the sources, in order to separate the Galactic foreground sources from those present in the LMC. We notice that groups classified by the proper motion data show a tendency towards different polarimetric properties.",

keywords = "Galaxies: Star clusters: Individual (30 doradus), Infrared: ISM, Proper motions, Techniques: Polarimetric",

author = "Jaeyeong Kim and Soojong Pak and Minho Choi and Wonseok Kang and Ryo Kandori and Motohide Tamura and Tetsuya Nagata and Jungmi Kwon and Daisuke Kato and Jaffe, \{Daniel T.\}",

year = "2011",

doi = "10.5303/JKAS.2011.44.4.135",

language = "English",

volume = "44",

pages = "135--142",

journal = "Journal of the Korean Astronomical Society",

issn = "1225-4614",

publisher = "Korean Astronomical Society",

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}

TY - JOUR

T1 - Near-ir polarimetry around 30 doradus

T2 - I. separation of the galactic sources

AU - Kim, Jaeyeong

AU - Pak, Soojong

AU - Choi, Minho

AU - Kang, Wonseok

AU - Kandori, Ryo

AU - Tamura, Motohide

AU - Nagata, Tetsuya

AU - Kwon, Jungmi

AU - Kato, Daisuke

AU - Jaffe, Daniel T.

PY - 2011

Y1 - 2011

N2 - A 20' × 20' region around 30 Doradus in the Large Magellanic Cloud (LMC) is observed and analyzed in the near-infrared. We obtain polarimetry data in the J, H, and Ks bands using the SIRIUS polarimeter SIRPOL at the Infrared Survey Facility 1.4 m telescope. We measure the Stokes parameters of 2562 point-like sources to derive the degree of polarization and the polarization position angles. We discuss the statistics of the groups classified by color-magnitude diagram and proper motions of the sources, in order to separate the Galactic foreground sources from those present in the LMC. We notice that groups classified by the proper motion data show a tendency towards different polarimetric properties.

AB - A 20' × 20' region around 30 Doradus in the Large Magellanic Cloud (LMC) is observed and analyzed in the near-infrared. We obtain polarimetry data in the J, H, and Ks bands using the SIRIUS polarimeter SIRPOL at the Infrared Survey Facility 1.4 m telescope. We measure the Stokes parameters of 2562 point-like sources to derive the degree of polarization and the polarization position angles. We discuss the statistics of the groups classified by color-magnitude diagram and proper motions of the sources, in order to separate the Galactic foreground sources from those present in the LMC. We notice that groups classified by the proper motion data show a tendency towards different polarimetric properties.

KW - Galaxies: Star clusters: Individual (30 doradus)

KW - Infrared: ISM

KW - Proper motions

KW - Techniques: Polarimetric

UR - https://www.scopus.com/pages/publications/84860421480

U2 - 10.5303/JKAS.2011.44.4.135

DO - 10.5303/JKAS.2011.44.4.135

M3 - Article

AN - SCOPUS:84860421480

SN - 1225-4614

VL - 44

SP - 135

EP - 142

JO - Journal of the Korean Astronomical Society

JF - Journal of the Korean Astronomical Society

IS - 4

ER -

Near-ir polarimetry around 30 doradus: I. separation of the galactic sources

Abstract

Keywords

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