infrared identification of forming solar systems in other galaxies sweta shah ithaca college...
Post on 21-Dec-2015
216 views
TRANSCRIPT
![Page 1: Infrared Identification of Forming Solar Systems in Other Galaxies Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic](https://reader030.vdocuments.site/reader030/viewer/2022032801/56649d545503460f94a30968/html5/thumbnails/1.jpg)
Infrared Identification of Forming Solar Systems in Other Galaxies
Sweta ShahIthaca College
Advisor: Dr. Luke Keller Physics Department
Small Magellanic CloudImage credit: NASA/ESA
![Page 2: Infrared Identification of Forming Solar Systems in Other Galaxies Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic](https://reader030.vdocuments.site/reader030/viewer/2022032801/56649d545503460f94a30968/html5/thumbnails/2.jpg)
Stars (AeBe?) in SMC
Spectral Energy Distribution & Disk Geometry (Malfait et al. 1998)
UV mm
![Page 3: Infrared Identification of Forming Solar Systems in Other Galaxies Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic](https://reader030.vdocuments.site/reader030/viewer/2022032801/56649d545503460f94a30968/html5/thumbnails/3.jpg)
What we Did Spitzer Survey of SMC
Small Magellanic CloudImage credit: NASA/ESA
Small Magellanic Cloud (SMC)
• Dwarf galaxy
• 60 kpc away (~1016 meters)
• low metallicity
![Page 4: Infrared Identification of Forming Solar Systems in Other Galaxies Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic](https://reader030.vdocuments.site/reader030/viewer/2022032801/56649d545503460f94a30968/html5/thumbnails/4.jpg)
Are they really HAeBe stars?
Colour Colour Diagram (de Wit et al. 2003)
![Page 5: Infrared Identification of Forming Solar Systems in Other Galaxies Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic](https://reader030.vdocuments.site/reader030/viewer/2022032801/56649d545503460f94a30968/html5/thumbnails/5.jpg)
Metallicity Effect in SMC
![Page 6: Infrared Identification of Forming Solar Systems in Other Galaxies Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic](https://reader030.vdocuments.site/reader030/viewer/2022032801/56649d545503460f94a30968/html5/thumbnails/6.jpg)
2MASS K-band Images (Spitzer Archives)
Spectral Energy Distributions (Shah and Keller)
ESHCs detected in the S3MC mid infrared survey
![Page 7: Infrared Identification of Forming Solar Systems in Other Galaxies Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic](https://reader030.vdocuments.site/reader030/viewer/2022032801/56649d545503460f94a30968/html5/thumbnails/7.jpg)
• 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?
Remaining Questions /
Issues
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.
On Going Work
![Page 8: Infrared Identification of Forming Solar Systems in Other Galaxies Sweta Shah Ithaca College Advisor: Dr. Luke Keller Physics Department Small Magellanic](https://reader030.vdocuments.site/reader030/viewer/2022032801/56649d545503460f94a30968/html5/thumbnails/8.jpg)
Thanks([email protected])