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

Subtracting Stellar Signals and Impr...

Giguere, Matthew J.

FindBook

Google Book

Amazon

博客來

Subtracting Stellar Signals and Improving Instrumentation On A Road Towards Other Earths.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Subtracting Stellar Signals and Improving Instrumentation On A Road Towards Other Earths./
作者:	Giguere, Matthew J.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
面頁冊數:	251 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.
Contained By:	Dissertation Abstracts International77-12B(E).
標題:	Astronomy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10154432
ISBN:	9781369095258

Subtracting Stellar Signals and Improving Instrumentation On A Road Towards Other Earths.
Giguere, Matthew J.

Subtracting Stellar Signals and Improving Instrumentation On A Road Towards Other Earths. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 251 p.

Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.

Thesis (Ph.D.)--Yale University, 2016.

Improvements in radial velocity precision and detection capabilities will one day lead to the detection of earth-mass planets orbiting in the habitable zones of nearby stars. Detecting low mass planets at large separations will help fill in our understanding of how planetary systems form and subsequently evolve. Additionally, they will provide a target list for followup with future facilities such as the James Webb Space Telescope that will search for atmospheric biosignatures and help determine how common life is in the universe. This thesis presents observations, methods, and analyses created to improve the instrumental precision, efficiency, and detection capabilities of the radial velocity (RV) method of exoplanet detection.

ISBN: 9781369095258Subjects--Topical Terms:

517668
Astronomy.

Subtracting Stellar Signals and Improving Instrumentation On A Road Towards Other Earths.
LDR:03527nmm a2200337 4500 001 2122462
005 20170922124918.5
008 180830s2016 ||||||||||||||||| ||eng d
020 $a 9781369095258
035 $a (MiAaPQ)AAI10154432
035 $a AAI10154432
040 $a MiAaPQ $c MiAaPQ
100 1 $a Giguere, Matthew J. $3 3284436
245 1 0 $a Subtracting Stellar Signals and Improving Instrumentation On A Road Towards Other Earths.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2016
300 $a 251 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-12(E), Section: B.
500 $a Adviser: Debra A. Fischer.
502 $a Thesis (Ph.D.)--Yale University, 2016.
520 $a Improvements in radial velocity precision and detection capabilities will one day lead to the detection of earth-mass planets orbiting in the habitable zones of nearby stars. Detecting low mass planets at large separations will help fill in our understanding of how planetary systems form and subsequently evolve. Additionally, they will provide a target list for followup with future facilities such as the James Webb Space Telescope that will search for atmospheric biosignatures and help determine how common life is in the universe. This thesis presents observations, methods, and analyses created to improve the instrumental precision, efficiency, and detection capabilities of the radial velocity (RV) method of exoplanet detection.
520 $a Chapters 2 and 3 present 7 planetary systems discovered using the HIRES Spectrograph on the Keck I telescope. One of these systems presents a challenge for theorists, as it cannot be explained with current planet formation and migration theories. We also detect a correlation between RV measurements and S-value measurements, which are an indicator of stellar activity. By linearly modeling and removing this correlation, the residual RMS of the velocities improved by 21%.
520 $a In Chapters 4 and 5 we describe the commissioning and software stack behind CHIRON, a new instrument we commissioned on a 1.5 m telescope at the CTIO Observatory. CHIRON provides a queue-based observing system for the general astronomical community, and dealing manually with the large amount of data collected nightly quickly became an overwhelming task. Primarily to reduce time and error, most of the observing pipeline for CHIRON was automated, which is described in these two chapters.
520 $a Lastly, we present observations from a multi-facility campaign to simultaneously observe the young and moderately active K dwarf e Eridani. We use this data to explore three methods of modeling stellar activity: spot modeling, the FF' method, and a new approach that makes use of Ha measurements input into the FF' method, which we refer to as the HH' method. Spot modeling yielded the best result of the three methods tested in terms of residual RMS after subtracting the model from the data, and reduced the RMS from 7.4 m s -1 to 2.7 m s-1. However, the HH' method benefits from not needing precise space-based photometry as input. Additionally, the HH' method only makes use of one of the thousands of lines in the visible spectrum; incorporating more spectral lines into the model would most likely lead to significant improvements.
590 $a School code: 0265.
650 4 $a Astronomy. $3 517668
650 4 $a Astrophysics. $3 535904
650 4 $a Physics. $3 516296
690 $a 0606
690 $a 0596
690 $a 0605
710 2 $a Yale University. $3 515640
773 0 $t Dissertation Abstracts International $g 77-12B(E).
790 $a 0265
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10154432