MASSIVE STAR FORMATION IN NGC 2074

Fleener, Christine E; Chu, Y -H; Gruendl, Robert A; Payne, James T; Chen, C.-H. Rosie

doi:10.1088/0004-6256/139/1/158; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)

Title: MASSIVE STAR FORMATION IN NGC 2074

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Abstract

Spitzer observations of the Large Magellanic Cloud (LMC) have revealed a large population of young stellar objects (YSOs), but complementary high-resolution images in the optical or near-IR wavelengths are still needed to resolve the multiplicity and immediate environments of the YSOs. The Hubble Space Telescope imaged the star-forming region NGC 2074 in the LMC during its 100,000th orbit, providing an opportunity to more closely examine the YSOs and their environments in this region. We have studied the 10 YSO candidates identified from Spitzer observations, confirming their nature and determining their physical parameters by modeling their spectral energy distributions. The majority of the YSOs and central stars of ultracompact H II regions in NGC 2074 have masses consistent with spectral types of early B to late O. The co-existence of massive early-type O stars and the less massive YSOs indicates that their formation may have started at a similar time, a few 10{sup 5} yr ago. NGC 2074 provides an opportunity to study the evolution of massive stars at their infancy.

Authors:

Fleener, Christine E; Chu, Y -H; Gruendl, Robert A ^[1]; Payne, James T ^[2]; Chen, C.-H. Rosie ^[3]

Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, IL 61801 (United States)
Department of Chemistry, University of Illinois, Urbana, IL 61801 (United States)
Department of Astronomy, University of Virginia, Charlottesville, VA 22904 (United States)

Publication Date:: Fri Jan 15 00:00:00 EST 2010

OSTI Identifier:: 21301458

Resource Type:: Journal Article

Journal Name:: Astronomical Journal (New York, N.Y. Online)

Additional Journal Information:: Journal Volume: 139; Journal Issue: 1; Other Information: DOI: 10.1088/0004-6256/139/1/158; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1538-3881

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; ENERGY SPECTRA; IMAGES; MAGELLANIC CLOUDS; MASS; MULTIPLICITY; ORBITS; SIMULATION; STAR EVOLUTION; STARS; TELESCOPES

Citation Formats


                    Fleener, Christine E, Chu, Y -H, Gruendl, Robert A, Payne, James T, and Chen, C.-H. Rosie. MASSIVE STAR FORMATION IN NGC 2074.  United States: N. p., 2010. 
        Web.  doi:10.1088/0004-6256/139/1/158; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).

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                    Fleener, Christine E, Chu, Y -H, Gruendl, Robert A, Payne, James T, & Chen, C.-H. Rosie. MASSIVE STAR FORMATION IN NGC 2074.  United States.  https://doi.org/10.1088/0004-6256/139/1/158; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)

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                    Fleener, Christine E, Chu, Y -H, Gruendl, Robert A, Payne, James T, and Chen, C.-H. Rosie. 2010.  
        "MASSIVE STAR FORMATION IN NGC 2074".  United States.  https://doi.org/10.1088/0004-6256/139/1/158; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).

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@article{osti_21301458,

  title        = {MASSIVE STAR FORMATION IN NGC 2074},

  author       = {Fleener, Christine E and Chu, Y -H and Gruendl, Robert A and Payne, James T and Chen, C.-H. Rosie},

  abstractNote = {Spitzer observations of the Large Magellanic Cloud (LMC) have revealed a large population of young stellar objects (YSOs), but complementary high-resolution images in the optical or near-IR wavelengths are still needed to resolve the multiplicity and immediate environments of the YSOs. The Hubble Space Telescope imaged the star-forming region NGC 2074 in the LMC during its 100,000th orbit, providing an opportunity to more closely examine the YSOs and their environments in this region. We have studied the 10 YSO candidates identified from Spitzer observations, confirming their nature and determining their physical parameters by modeling their spectral energy distributions. The majority of the YSOs and central stars of ultracompact H II regions in NGC 2074 have masses consistent with spectral types of early B to late O. The co-existence of massive early-type O stars and the less massive YSOs indicates that their formation may have started at a similar time, a few 10{sup 5} yr ago. NGC 2074 provides an opportunity to study the evolution of massive stars at their infancy.},

  doi          = {10.1088/0004-6256/139/1/158; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)},

  url          = {https://www.osti.gov/biblio/21301458},
  journal      = {Astronomical Journal (New York, N.Y. Online)},

  issn         = {1538-3881},

  number       = 1,

  volume       = 139,

  place        = {United States},

  year         = {Fri Jan 15 00:00:00 EST 2010},

  month        = {Fri Jan 15 00:00:00 EST 2010}

}

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https://doi.org/10.1088/0004-6256/139/1/158; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)

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