東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Modeling spatially and spectrally re...

Snyder, Gregory Frantz.

Linked to FindBook

Google Book

Amazon

博客來

Modeling spatially and spectrally resolved observations to diagnose the formation of elliptical galaxies.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Modeling spatially and spectrally resolved observations to diagnose the formation of elliptical galaxies./
Author:	Snyder, Gregory Frantz.
Description:	309 p.
Notes:	Source: Dissertation Abstracts International, Volume: 74-10(E), Section: B.
Contained By:	Dissertation Abstracts International74-10B(E).
Subject:	Astronomy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3567069
ISBN:	9781303187056

Modeling spatially and spectrally resolved observations to diagnose the formation of elliptical galaxies.
Snyder, Gregory Frantz.

Modeling spatially and spectrally resolved observations to diagnose the formation of elliptical galaxies. - 309 p.

Source: Dissertation Abstracts International, Volume: 74-10(E), Section: B.

Thesis (Ph.D.)--Harvard University, 2013.

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

In extragalactic astronomy, a central challenge is that we cannot directly watch what happens to galaxies before and after they are observed. This dissertation focuses on linking predictions of galaxy time-evolution directly with observations, evaluating how interactions, mergers, and other processes affect the appearance of elliptical galaxies. The primary approach is to combine hydrodynamical simulations of galaxy formation, including all major components, with dust radiative transfer to predict their observational signatures.

ISBN: 9781303187056Subjects--Topical Terms:

517668
Astronomy.

Modeling spatially and spectrally resolved observations to diagnose the formation of elliptical galaxies.
LDR:03359nmm a2200325 4500 001 2059752
005 20150827082950.5
008 170521s2013 ||||||||||||||||| ||eng d
020 $a 9781303187056
035 $a (MiAaPQ)AAI3567069
035 $a AAI3567069
040 $a MiAaPQ $c MiAaPQ
100 1 $a Snyder, Gregory Frantz. $3 3173873
245 1 0 $a Modeling spatially and spectrally resolved observations to diagnose the formation of elliptical galaxies.
300 $a 309 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-10(E), Section: B.
500 $a Adviser: Lars Hernquist.
502 $a Thesis (Ph.D.)--Harvard University, 2013.
506 $a This item must not be sold to any third party vendors.
520 $a In extragalactic astronomy, a central challenge is that we cannot directly watch what happens to galaxies before and after they are observed. This dissertation focuses on linking predictions of galaxy time-evolution directly with observations, evaluating how interactions, mergers, and other processes affect the appearance of elliptical galaxies. The primary approach is to combine hydrodynamical simulations of galaxy formation, including all major components, with dust radiative transfer to predict their observational signatures.
520 $a The current paradigm implies that a quiescent elliptical emerges following a formative starburst event. These trigger accretion onto the central supermassive black hole (SMBH), which then radiates as an active galactic nucleus (AGN). However, it is not clear the extent to which SMBH growth is fueled by these events nor how important is their energy input at setting the appearance of the remnant.
520 $a This thesis presents results drawing from three phases in the formation of a typical elliptical: 1) I evaluate how to disentangle AGN from star formation signatures in mid-infrared spectra during a dust-enshrouded starburst, making testable predictions for robustly tracing SMBH growth with the James Webb Space Telescope; 2) I develop a model for the rate of merger-induced post-starburst galaxies selected from optical spectra, resolving tension between their observed rarity and merger rates from other estimates; and 3) I present results from Hubble Space Telescope imaging of elliptical galaxies in galaxy clusters at 1 < z < 2, the precursors of present-day massive clusters with M ~ 1015 solar masses, demonstrating that their stars formed over an extended period and ruling out the simplest model for their formation history.
520 $a These results lend support to a stochastic formation history for ellipticals driven by mergers or interactions. However, significant uncertainties remain in how to evaluate the implications of galaxy appearance, in particular their morphologies across cosmic time. In the final chapter, I outline an approach to build a "mock observatory" from cosmological hydrodynamical simulations, with which observations of all types, including at high spatial and spectral resolutions, can be brought to bear in directly constraining the physics of galaxy formation and evolution.
590 $a School code: 0084.
650 4 $a Astronomy. $3 517668
650 4 $a Astrophysics. $3 535904
690 $a 0606
690 $a 0596
710 2 $a Harvard University. $b Astronomy. $3 3173874
773 0 $t Dissertation Abstracts International $g 74-10B(E).
790 $a 0084
791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3567069