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Infrared Identification of Forming Solar Systems in Other Galaxies

Infrared Identification of Forming Solar Systems in Other Galaxies. Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department. Small Magellanic Cloud Image credit: NASA/ESA. Stars (AeBe?) in SMC. mm. UV. S pectral E nergy D istribution & Disk Geometry (Malfait et al. 1998).

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Infrared Identification of Forming Solar Systems in Other Galaxies

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  1. Infrared Identification of Forming Solar Systems in Other Galaxies Sweta ShahIthaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic Cloud Image credit: NASA/ESA

  2. Stars (AeBe?) in SMC mm UV Spectral Energy Distribution & Disk Geometry (Malfait et al. 1998)

  3. What we DidSpitzer Survey of SMC • Small Magellanic Cloud (SMC) • Dwarf galaxy • 60 kpc away (~1016 meters) • low metallicity Small Magellanic Cloud Image credit: NASA/ESA

  4. Are they really HAeBe stars? Colour Colour Diagram (de Wit et al. 2003)

  5. Metallicity Effect in SMC

  6. ESHCs detected in the S3MC mid infrared survey 2MASS K-band Images (Spitzer Archives) Spectral Energy Distributions (Shah and Keller)

  7. Remaining Questions / Issues On Going Work • Are these actually Herbig AeBe stars? • Brightness of stars in metal poor environments should be higher (Lammers 1999, de Witt 2003) • SMC Herbig AeBe candidates’ disks • How different is the ESHC dust relative to the Galactic HAeBe stars? • Can we characterize the gas in these disks? Submitted a Proposal for follow-up space-based observations - Spitzer Infrared Spectrograph in February 2007. Also submitted Proposal for ground-based data – Gemini in March 2007.

  8. Thanks (sshah1@ithaca.edu)

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