東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Planetary signatures in circumstella...

Wahhaj, Zahed.

FindBook

Google Book

Amazon

博客來

Planetary signatures in circumstellar debris disks.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Planetary signatures in circumstellar debris disks./
作者:	Wahhaj, Zahed.
面頁冊數:	200 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 3181.
Contained By:	Dissertation Abstracts International66-06B.
標題:	Physics, Astronomy and Astrophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3179827
ISBN:	0542200996

Planetary signatures in circumstellar debris disks.
Wahhaj, Zahed.

Planetary signatures in circumstellar debris disks. - 200 p.

Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 3181.

Thesis (Ph.D.)--University of Pennsylvania, 2005.

Keck mid-infrared imaging of circumstellar debris disks around the pre-main sequence stars, beta Pictoris, HR. 4796A and 49 Cet are presented. It is demonstrated that high resolution thermal imaging at mid-infrared wavelengths is the preferred method to resolve the inner regions of circumstellar disks, because of little contamination by the photosphere in this frequency regime. Our maps of the dust morphology reveal features like sharp ring confinement, asymmetric disk brightness, and in the case of beta Pictoris, a multitude of rings with different orbital inclinations. These features join others found in a small but growing number of debris disk discoveries by direct imaging. Taken together, these present a mounting evidence of planetary signatures around pre-main sequence stars. As a first step to understanding star and planet formation in the conditions of specific molecular clouds, the Spitzer Space Telescope photometric measurements of the Chamaeleon II dark clouds are surveyed for young stars with cicumstellar disks. Twenty one new pre-main sequence stars are discovered in the Chamaeleon II dark clouds, identified by Spitzer photometry.

ISBN: 0542200996Subjects--Topical Terms:

1019521
Physics, Astronomy and Astrophysics.

Planetary signatures in circumstellar debris disks.
LDR:02008nmm 2200265 4500 001 1816033
005 20060717150843.5
008 130610s2005 eng d
020 $a 0542200996
035 $a (UnM)AAI3179827
035 $a AAI3179827
040 $a UnM $c UnM
100 1 $a Wahhaj, Zahed. $3 1905428
245 1 0 $a Planetary signatures in circumstellar debris disks.
300 $a 200 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 3181.
500 $a Adviser: David W. Koerner.
502 $a Thesis (Ph.D.)--University of Pennsylvania, 2005.
520 $a Keck mid-infrared imaging of circumstellar debris disks around the pre-main sequence stars, beta Pictoris, HR. 4796A and 49 Cet are presented. It is demonstrated that high resolution thermal imaging at mid-infrared wavelengths is the preferred method to resolve the inner regions of circumstellar disks, because of little contamination by the photosphere in this frequency regime. Our maps of the dust morphology reveal features like sharp ring confinement, asymmetric disk brightness, and in the case of beta Pictoris, a multitude of rings with different orbital inclinations. These features join others found in a small but growing number of debris disk discoveries by direct imaging. Taken together, these present a mounting evidence of planetary signatures around pre-main sequence stars. As a first step to understanding star and planet formation in the conditions of specific molecular clouds, the Spitzer Space Telescope photometric measurements of the Chamaeleon II dark clouds are surveyed for young stars with cicumstellar disks. Twenty one new pre-main sequence stars are discovered in the Chamaeleon II dark clouds, identified by Spitzer photometry.
590 $a School code: 0175.
650 4 $a Physics, Astronomy and Astrophysics. $3 1019521
690 $a 0606
710 2 0 $a University of Pennsylvania. $3 1017401
773 0 $t Dissertation Abstracts International $g 66-06B.
790 1 0 $a Koerner, David W., $e advisor
790 $a 0175
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3179827