Ms. Nataliya Zubko Profile

Nataliya Zubko

at Hokkaido Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 12 July 2008 Paper

Polarization analysis as a means of detecting exoplanets and measuring their objective spectra

N. Zubko, N. Baba, N. Murakami

Proceedings Volume 7010, 70101P (2008) https://doi.org/10.1117/12.788538

KEYWORDS: Polarization, Planets, Exoplanets, Coronagraphy, Stars, Polarization analysis, Prisms, Destructive interference, Nulling interferometry, Imaging spectroscopy

Read Abstract +

We present a method of the polarization degree analysis of exoplanets' objective-prism spectra. The polarization analysis of the objective spectra can be used for discerning planet signal from noisy stellar light. The light reflected from the planet is expected to be partially polarized, while the direct stellar light can be considered to be unpolarized. For measuring objective spectra we use a four-quadrant polarization mask (FQPoM) coronagraph and a prism. The primary suppression of starlight is achieved by destructive interference of the light passing through the central region of FQPoM. For further suppression of starlight we use a polarization differential technique. By taking the difference between two orthogonally polarized components of incoming light we can further suppress unpolarized starlight and reveal the spectrum of the exoplanet. However, when the intensity contrast between the star and its planet is high, the starlight noise impedes detection of the planetary spectrum. The analysis of the degree of polarization relieves the separation of the planetary spectrum from the stellar noise. Moreover, any peculiar features in the objective spectra would be useful to find out the location of the exoplanet. We obtained the experimental results under an intensity contrast of 3.5×10^-5 and an angular separation of 4.9 λ/D.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years