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

FindBook

Google Book

Amazon

博客來

The Role of Dense Circumgalactic Gas in Shaping Galaxies.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The Role of Dense Circumgalactic Gas in Shaping Galaxies./
作者:	Berg, Michelle A.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2022,
面頁冊數:	309 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-02, Section: B.
Contained By:	Dissertations Abstracts International83-02B.
標題:	Astrophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28650056
ISBN:	9798535502281

The Role of Dense Circumgalactic Gas in Shaping Galaxies.
Berg, Michelle A.

The Role of Dense Circumgalactic Gas in Shaping Galaxies. - Ann Arbor : ProQuest Dissertations & Theses, 2022 - 309 p.

Source: Dissertations Abstracts International, Volume: 83-02, Section: B.

Thesis (Ph.D.)--University of Notre Dame, 2022.

This item must not be sold to any third party vendors.

This dissertation is composed of two projects that study the circumgalactic medium (CGM) of galaxies at z < 1, searching for connections between the gas in galaxy halos and their host galaxy properties. For galaxies to continue forming stars, they must accrete material that passes through the CGM in the form of large-scale inflows (recycling material or gas from the intergalactic medium, IGM) while also contending with large-scale outflows (winds escaping the galaxy disk). In this work, we investigate whether the CGM properties correlate with the galaxy properties using absorbers known as partial Lyman limit systems (pLLSs) and Lyman limit systems (LLSs) with 16.0 ≤ logNHI < 19.0 [cm-2].In Chapter 2, we present the bimodal absorption system imaging campaign (BASIC) which is an absorption-selected CGM survey at z < 1 aimed at understanding the types of galaxies that house absorbers of different metallicities. We use integral field unit observations to identify and characterize the host galaxies of absorbers that span a broad range (0.1−54% solar) in metallicity.We present the red dead redemption (RDR) survey, composed of two samples, in Chapters 3 (RDR1) and 4 (RDR2). This galaxy-selected survey uses luminous red galaxies (LRGs, logM★ > 11 M⊙) at z ~ 0.5 to observationally test model predictions for cold-mode and hot-mode accretion into galaxy halos by determining the cool HI gas content in LRG halos and the metallicity of the absorbers we detect. RDR1 is an archival sample of QSO-LRG pairs with sightlines probing to ~Rvir; RDR2 is an HST Cycle 25 and archival sample of QSO-LRG pairs with sightlines probing to ~0.4Rvir in the halo.Our findings show the CGM metallicity does not correlate with most of the host galaxy properties, with the exception of stellar mass. There is no mass where we do not find cool gas in the inner CGM of galaxy halos, and low-metallicity absorbers are found in halos of all masses. However, the majority of these absorbers are most likely associated with the IGM instead of galaxy halos.

ISBN: 9798535502281Subjects--Topical Terms:

535904
Astrophysics.
Subjects--Index Terms:

Circumgalactic Medium

The Role of Dense Circumgalactic Gas in Shaping Galaxies.
LDR:03284nmm a2200385 4500 001 2344841
005 20220531062154.5
008 241004s2022 ||||||||||||||||| ||eng d
020 $a 9798535502281
035 $a (MiAaPQ)AAI28650056
035 $a AAI28650056
040 $a MiAaPQ $c MiAaPQ
100 1 $a Berg, Michelle A. $0 (orcid)0000-0002-8518-6638 $3 3683659
245 1 4 $a The Role of Dense Circumgalactic Gas in Shaping Galaxies.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2022
300 $a 309 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-02, Section: B.
500 $a Advisor: Howk, J. Christopher;Lehner, Nicolas.
502 $a Thesis (Ph.D.)--University of Notre Dame, 2022.
506 $a This item must not be sold to any third party vendors.
520 $a This dissertation is composed of two projects that study the circumgalactic medium (CGM) of galaxies at z < 1, searching for connections between the gas in galaxy halos and their host galaxy properties. For galaxies to continue forming stars, they must accrete material that passes through the CGM in the form of large-scale inflows (recycling material or gas from the intergalactic medium, IGM) while also contending with large-scale outflows (winds escaping the galaxy disk). In this work, we investigate whether the CGM properties correlate with the galaxy properties using absorbers known as partial Lyman limit systems (pLLSs) and Lyman limit systems (LLSs) with 16.0 ≤ logNHI < 19.0 [cm-2].In Chapter 2, we present the bimodal absorption system imaging campaign (BASIC) which is an absorption-selected CGM survey at z < 1 aimed at understanding the types of galaxies that house absorbers of different metallicities. We use integral field unit observations to identify and characterize the host galaxies of absorbers that span a broad range (0.1−54% solar) in metallicity.We present the red dead redemption (RDR) survey, composed of two samples, in Chapters 3 (RDR1) and 4 (RDR2). This galaxy-selected survey uses luminous red galaxies (LRGs, logM★ > 11 M⊙) at z ~ 0.5 to observationally test model predictions for cold-mode and hot-mode accretion into galaxy halos by determining the cool HI gas content in LRG halos and the metallicity of the absorbers we detect. RDR1 is an archival sample of QSO-LRG pairs with sightlines probing to ~Rvir; RDR2 is an HST Cycle 25 and archival sample of QSO-LRG pairs with sightlines probing to ~0.4Rvir in the halo.Our findings show the CGM metallicity does not correlate with most of the host galaxy properties, with the exception of stellar mass. There is no mass where we do not find cool gas in the inner CGM of galaxy halos, and low-metallicity absorbers are found in halos of all masses. However, the majority of these absorbers are most likely associated with the IGM instead of galaxy halos.
590 $a School code: 0165.
650 4 $a Astrophysics. $3 535904
650 4 $a Remote sensing. $3 535394
650 4 $a Astronomy. $3 517668
650 4 $a Stars & galaxies. $3 3683661
650 4 $a Velocity. $3 3560495
650 4 $a Data analysis. $2 bisacsh $3 3515250
650 4 $a Spectrum analysis. $3 520440
650 4 $a Confidence intervals. $3 566017
653 $a Circumgalactic Medium
653 $a Galaxy evolution
653 $a Galaxy spectroscopy
653 $a Intergalactic Medium
653 $a Lyman Limit Systems
653 $a Quasar absorption line spectroscopy
690 $a 0596
690 $a 0799
690 $a 0606
710 2 $a University of Notre Dame. $b Physics. $3 3683660
773 0 $t Dissertations Abstracts International $g 83-02B.
790 $a 0165
791 $a Ph.D.
792 $a 2022
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28650056