The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification III.

Olivia C Jones; Paul M. Woods; F Kemper; K. E. Kraemer; G C Sloan; S Srinivasan; J. M. Oliveira; J. Th Van Loon; M Boyer; B. A. Sargent; Iain Mcdonald; M Meixner; Albert Zijlstra; Paul Ruffle; E Lagadec; T. Pauly; M. Sewilo; G C Clayton; K. Volk

doi:10.1093/mnras/stx1101

The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification III.

Olivia C Jones, Paul M. Woods, F Kemper, K. E. Kraemer, G C Sloan, S Srinivasan, J. M. Oliveira, J. Th Van Loon, M Boyer, B. A. Sargent, Iain Mcdonald, M Meixner, Albert Zijlstra, Paul Ruffle, E Lagadec, T. Pauly, M. Sewilo, G C Clayton, K. Volk

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Abstract

The Infrared Spectrograph (IRS) on the Spitzer Space Telescope observed nearly 800 point sources in the Large Magellanic Cloud (LMC), taking over 1 000 spectra. 197 of these targets were observed as part of the SAGE-Spec Spitzer Legacy program; the remainder are from a variety of different calibration, guaranteed time and open time projects. We classify these point sources into
types according to their infrared spectral features, continuum and spectral energy distribution shape, bolometric luminosity, cluster membership, and variability information, using a decisiontree classification method. We then refine the classification using supplementary information from the astrophysical literature. We find that our IRS sample is comprised substantially of YSO and
Hii regions, post-Main Sequence low-mass stars: (post-)AGB stars and planetary nebulae and massive stars including several rare evolutionary types. Two supernova remnants, a nova and several background galaxies were also observed. We use these classifications to improve our understanding of the stellar populations in the Large Magellanic Cloud, study the composition
and characteristics of dust species in a variety of LMC objects, and to verify the photometric classification methods used by mid-IR surveys. We discover that some widely-used catalogues of objects contain considerable contamination and others are missing sources in our sample.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
DOIs	https://doi.org/10.1093/mnras/stx1101
Publication status	Published - 8 May 2017

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Jones, O. C., Woods, P. M., Kemper, F., Kraemer, K. E., Sloan, G. C., Srinivasan, S., Oliveira, J. M., Van Loon, J. T., Boyer, M., Sargent, B. A., Mcdonald, I., Meixner, M., Zijlstra, A., Ruffle, P., Lagadec, E., Pauly, T., Sewilo, M., Clayton, G. C., & Volk, K. (2017). The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification III. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnras/stx1101

@article{7f7406c77e614c628ad095d6d9b9c5e8,

title = "The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification III.",

abstract = "The Infrared Spectrograph (IRS) on the Spitzer Space Telescope observed nearly 800 point sources in the Large Magellanic Cloud (LMC), taking over 1 000 spectra. 197 of these targets were observed as part of the SAGE-Spec Spitzer Legacy program; the remainder are from a variety of different calibration, guaranteed time and open time projects. We classify these point sources intotypes according to their infrared spectral features, continuum and spectral energy distribution shape, bolometric luminosity, cluster membership, and variability information, using a decisiontree classification method. We then refine the classification using supplementary information from the astrophysical literature. We find that our IRS sample is comprised substantially of YSO andHii regions, post-Main Sequence low-mass stars: (post-)AGB stars and planetary nebulae and massive stars including several rare evolutionary types. Two supernova remnants, a nova and several background galaxies were also observed. We use these classifications to improve our understanding of the stellar populations in the Large Magellanic Cloud, study the compositionand characteristics of dust species in a variety of LMC objects, and to verify the photometric classification methods used by mid-IR surveys. We discover that some widely-used catalogues of objects contain considerable contamination and others are missing sources in our sample.",

author = "Jones, {Olivia C} and Woods, {Paul M.} and F Kemper and Kraemer, {K. E.} and Sloan, {G C} and S Srinivasan and Oliveira, {J. M.} and {Van Loon}, {J. Th} and M Boyer and Sargent, {B. A.} and Iain Mcdonald and M Meixner and Albert Zijlstra and Paul Ruffle and E Lagadec and T. Pauly and M. Sewilo and Clayton, {G C} and K. Volk",

year = "2017",

month = may,

day = "8",

doi = "10.1093/mnras/stx1101",

language = "English",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "1365-2966",

publisher = "Oxford University Press",

}

Jones, OC, Woods, PM, Kemper, F, Kraemer, KE, Sloan, GC, Srinivasan, S, Oliveira, JM, Van Loon, JT, Boyer, M, Sargent, BA, Mcdonald, I, Meixner, M, Zijlstra, A, Ruffle, P, Lagadec, E, Pauly, T, Sewilo, M, Clayton, GC & Volk, K 2017, 'The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification III.', Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnras/stx1101

TY - JOUR

T1 - The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification III.

AU - Jones, Olivia C

AU - Woods, Paul M.

AU - Kemper, F

AU - Kraemer, K. E.

AU - Sloan, G C

AU - Srinivasan, S

AU - Oliveira, J. M.

AU - Van Loon, J. Th

AU - Boyer, M

AU - Sargent, B. A.

AU - Mcdonald, Iain

AU - Meixner, M

AU - Zijlstra, Albert

AU - Ruffle, Paul

AU - Lagadec, E

AU - Pauly, T.

AU - Sewilo, M.

AU - Clayton, G C

AU - Volk, K.

PY - 2017/5/8

Y1 - 2017/5/8

N2 - The Infrared Spectrograph (IRS) on the Spitzer Space Telescope observed nearly 800 point sources in the Large Magellanic Cloud (LMC), taking over 1 000 spectra. 197 of these targets were observed as part of the SAGE-Spec Spitzer Legacy program; the remainder are from a variety of different calibration, guaranteed time and open time projects. We classify these point sources intotypes according to their infrared spectral features, continuum and spectral energy distribution shape, bolometric luminosity, cluster membership, and variability information, using a decisiontree classification method. We then refine the classification using supplementary information from the astrophysical literature. We find that our IRS sample is comprised substantially of YSO andHii regions, post-Main Sequence low-mass stars: (post-)AGB stars and planetary nebulae and massive stars including several rare evolutionary types. Two supernova remnants, a nova and several background galaxies were also observed. We use these classifications to improve our understanding of the stellar populations in the Large Magellanic Cloud, study the compositionand characteristics of dust species in a variety of LMC objects, and to verify the photometric classification methods used by mid-IR surveys. We discover that some widely-used catalogues of objects contain considerable contamination and others are missing sources in our sample.

AB - The Infrared Spectrograph (IRS) on the Spitzer Space Telescope observed nearly 800 point sources in the Large Magellanic Cloud (LMC), taking over 1 000 spectra. 197 of these targets were observed as part of the SAGE-Spec Spitzer Legacy program; the remainder are from a variety of different calibration, guaranteed time and open time projects. We classify these point sources intotypes according to their infrared spectral features, continuum and spectral energy distribution shape, bolometric luminosity, cluster membership, and variability information, using a decisiontree classification method. We then refine the classification using supplementary information from the astrophysical literature. We find that our IRS sample is comprised substantially of YSO andHii regions, post-Main Sequence low-mass stars: (post-)AGB stars and planetary nebulae and massive stars including several rare evolutionary types. Two supernova remnants, a nova and several background galaxies were also observed. We use these classifications to improve our understanding of the stellar populations in the Large Magellanic Cloud, study the compositionand characteristics of dust species in a variety of LMC objects, and to verify the photometric classification methods used by mid-IR surveys. We discover that some widely-used catalogues of objects contain considerable contamination and others are missing sources in our sample.

U2 - 10.1093/mnras/stx1101

DO - 10.1093/mnras/stx1101

M3 - Article

SN - 1365-2966

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification III.

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