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Transiting Extrasolar Planets. Observations of the planets HD 209458b and TrES-1b using the NFO webscope Presentation by Rozmin Daya Work by Rozmin Daya and Dr. Lacy. Background. Extrasolar planets can be detected via the transit technique.

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Transiting extrasolar planets

Transiting Extrasolar Planets

Observations of the planets HD 209458b and TrES-1b using the NFO webscope

Presentation by Rozmin Daya

Work by Rozmin Daya and Dr. Lacy


Background
Background

  • Extrasolar planets can be detected via the transit technique.

  • This can give information about: the planet’s orbital period, radius, mass, density, and distance from it’s parent star.


Goals of project
Goals of Project

  • Test the limits of the NFO telescope.

  • Improve on the known orbital elements for HD 209458b and TrES-1b.


Project description
Project Description

  • Transits of the planets will be photographed.

  • The images will be measured using the program Measure.

  • Light curves for the stars will be constructed using Measure.

  • The light curves will be analyzed using the program EBOP.

  • This will yield orbital information for the planets.


The nfo telescope
The NFO Telescope

  • Located in Silver City, NM

  • Robotic

  • Uses a 24” Cassegrain reflector and a 2k by 2k CCD camera on the back end

  • Can observe using B, V and R filter.

  • Processing: [raw – bias – (dark * exposure / 120)] * 10,000 / flat


Measuring the images
Measuring the Images

  • View images

  • Select a pattern

  • Measure the series

  • View the light curve the program has constructed


The good stuff
The Good Stuff

  • A series of images was obtained 07-15-2005 UT for HD 209458

  • Graphs were constructed for each color

  • The transit was from 6:07 UT to 9:07 UT

  • We photographed from 6:46 UT to 8:16 UT





Conclusion
Conclusion

  • The NFO telescope can observe the transits of extrasolar planets.

Future Work

  • TrES-1b

  • Continued observation of HD 209458b


References and acknowledgments
References and Acknowledgments

  • Acknowledgements: We would like to thank the state of Arkansas and NASA for funding.

  • References: [1] Brown, T. M., Charbonneau, D., Gilliland, R. L., Noyes, R. W., & Burrows, A. 2001, Astrophysical Journal, 552, 699.[2] Alonso et al., Astrophysical Journal Letters, 613, L153. [3] Neely, B. Obtained from NFO website.



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