Far Uv To Mid Ir Spectral Energy Distributions Of Nearby Merging Galaxies

DOWNLOAD

Download Far Uv To Mid Ir Spectral Energy Distributions Of Nearby Merging Galaxies PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Far Uv To Mid Ir Spectral Energy Distributions Of Nearby Merging Galaxies book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page

Far Uv To Mid Ir Spectral Energy Distributions Of Nearby Merging Galaxies

DOWNLOAD
Author : Madalyn Elizabeth Weston
language : en
Publisher:
Release Date : 2022

Far Uv To Mid Ir Spectral Energy Distributions Of Nearby Merging Galaxies written by Madalyn Elizabeth Weston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Electronic dissertations categories.

Simulations of gas-rich, major galaxy mergers predict elevated amounts of star formation (SF) and nuclear black hole growth (active galactic nuclei, or AGN). This model is supported by observations that find enhanced SF in mergers, but support for the AGN-merger connection remains uncertain. Interstellar dust, a bi-product of SF, can block much of the light from an AGN and re-radiate that energy at infrared (IR) wavelengths. Therefore, quantifying the amount of buried AGN activity in the IR is key to understanding the role of major mergers in galaxy evolution. Spectral energy distributions (SEDs) allow Astrophysicists to disentangle AGN activity from SF. I hypothesize that applying SED analysis to a sample of merging galaxies will show an enhancement in AGN activity over control galaxies. I perform SED analysis from the far-ultraviolet (FUV) to the mid-IR on a sample of 49 merging galaxies and 49 statistically-matched control galaxies in the nearby universe. I find that the SED AGN luminosity correlates with the [OIII] luminosity, a common indicator of AGN power. I find that galaxies previously identified as Seyfert or WISE AGNs generally have a higher SED AGN luminosity. I do not find an increased occurrence of SED-detected AGNs in merging over control galaxies, rejecting our study hypothesis. To meet the interdisciplinary requirements of this degree, I also design a new graduate-level course in Multicultural Education for STEM (science, technology, engineering and mathematics) fields. “Diversity and Inclusion” have become buzz words in STEM, as research continues to show achievement and participation gaps for women, people of color, disabled persons, those of low socio-economic status, and members of the LGBTQIA+ community. Research about the STEM gaps has existed for decades, particularly with respect to teaching practices that contribute to under-representation. Yet little change has occurred in STEM classrooms. Graduate students (i.e., future STEM professors and industry leaders) stand in a unique position to impact diversity and inclusion efforts. Through targeted education centered on diversity and inclusion in teaching methods, we can produce a new generation of STEM educators who are aware and mindful of their unique role in fighting inequality in STEM.

Proceedings Of The International Workshop On The Far Infrared And Submillimeter Spectral Energy Distributions Of Active And Starburst Galaxies

DOWNLOAD
Author : International Workshop on the Far Infrared and Submillimeter Spectral Energy Distributions of Active and Starburst Galaxies. 2000, Groningen
language : en
Publisher:
Release Date : 2001

Proceedings Of The International Workshop On The Far Infrared And Submillimeter Spectral Energy Distributions Of Active And Starburst Galaxies written by International Workshop on the Far Infrared and Submillimeter Spectral Energy Distributions of Active and Starburst Galaxies. 2000, Groningen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

The Spectral Energy Distribution Of Galaxies Sed 2011 Iau S284

DOWNLOAD
Author : Richard J. Tuffs
language : en
Publisher: Cambridge University Press
Release Date : 2012-08-30

The Spectral Energy Distribution Of Galaxies Sed 2011 Iau S284 written by Richard J. Tuffs and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-08-30 with Science categories.

Recent observational developments are providing the first truly panchromatic view of galaxies, extending from the radio to TeV gamma-rays. This is motivating the development of new models for the interpretation of spectral energy distributions (SEDs) of galaxies in terms of the formation, evolution and emission of stellar and accretion-driven sources of photons, the interaction of the photons with the gaseous and dust components of the interstellar medium, and high-energy processes involving cosmic rays. IAU Symposium 284 details progress in the development of such models, their relation to fundamental theory, and their application to the interpretation of the panchromatic emission from the Milky Way and nearby galaxies, connecting the latter with models for the evolution of the SEDs of distant galaxies, and the extragalactic background light. IAU S284 is a useful resource for all researchers working with the copious amounts of multiwavelength data for galaxies now becoming available.

The Dense Interstellar Medium In Galaxies

DOWNLOAD
Author : Susanne Pfalzner
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

The Dense Interstellar Medium In Galaxies written by Susanne Pfalzner and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

The Cologne-Bonn-Zermatt symposium is a well established series of conferences, occurring on a 5-year cycle, on the dense interstellar medium and related topics. The main results constitute valuable proceedings that offer everyone working in this field an authoritative and comprehensive source of reference.

The Spectral Energy Distributions Of Gas Rich Galaxies

DOWNLOAD
Author : Cristina C. Popescu
language : en
Publisher: American Institute of Physics
Release Date : 2005-04-28

The Spectral Energy Distributions Of Gas Rich Galaxies written by Cristina C. Popescu and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-04-28 with Science categories.

Heidelberg, Germany, 4-8 October 2004

The Far Infrared And Submillimeter Spectral Energy Distributions Of Active And Starburst Galaxies

DOWNLOAD
Author : Ilse van Bemmel
language : en
Publisher:
Release Date : 2001

The Far Infrared And Submillimeter Spectral Energy Distributions Of Active And Starburst Galaxies written by Ilse van Bemmel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Active galaxies categories.

Issues In Astronomy And Astrophysics 2013 Edition

DOWNLOAD
Author :
language : en
Publisher: ScholarlyEditions
Release Date : 2013-05-01

Issues In Astronomy And Astrophysics 2013 Edition written by and has been published by ScholarlyEditions this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-05-01 with Science categories.

Issues in Astronomy and Astrophysics / 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Planetary Science. The editors have built Issues in Astronomy and Astrophysics: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Planetary Science in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Astronomy and Astrophysics: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

The Hubble Deep Field

DOWNLOAD
Author : Space Telescope Science Institute (U.S.). Symposium
language : en
Publisher: Cambridge University Press
Release Date : 1998-10-13

The Hubble Deep Field written by Space Telescope Science Institute (U.S.). Symposium and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-10-13 with Science categories.

The Hubble Deep Field (HDF) is the deepest optical image of the Universe ever obtained. It is the result of a 150-orbit observing programme with the Hubble Space Telescope. It provides a unique resource for researchers studying the formation and evolution of stars and galaxies. This timely volume provides the first comprehensive overview of the HDF and its scientific impact on our understanding in cosmology. It presents articles by a host of world experts who gathered together at an international conference at the Space Telescope Science Institute. The contributions combine observations of the HDF at a variety of wavelengths with the latest theoretical progress in our understanding of the cosmic history of star and galaxy formation. The HDF is set to revolutionize our understanding in cosmology. This book therefore provides an indispensable reference for all graduate students and researchers in observational or theoretical cosmology.

Study Of The Far Infrared Emission Of Nearby Spiral Galaxies

DOWNLOAD
Author : Willie Drouhet
language : en
Publisher:
Release Date : 2013

Study Of The Far Infrared Emission Of Nearby Spiral Galaxies written by Willie Drouhet and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

In my PHD work I explored the links between the physical properties of interstellar dust and other components of nearby spiral galaxies especially their stellar content. I worked on 46 disk galaxies from KINGFISH with IRAC/MIPS/PACS/SPIRE maps (3.6 - 500 microns). A bias is usually introduced in estimating disk orientations by using only a single surface brightness isophote. Thus I devised different surface brightness levels separated by constant steps in surface brightness and extracted isophotes at these levels in all FIR maps as well as in all IRAC 4.5 microns maps. To further assess the coherence of the shapes of isophotes across galactic disks, I built a quantitative indicator of the difference in shape between two ellipses with same center and same semi-major axis.I defined an acceptable level of difference between isophote shapes, by comparing disk orientations found in litterature. Using this level, I found regions inside the galactic disks where the isophotal shapes are similar. From these, I extracted one disk orientation per wavelength band. I found in the vast majority of the disk galaxy maps, be it dominated by stellar or dust emission, that a large fraction of the isophotes I extracted are coherent with the idea of an underlying disk. Comparing, for each galaxy, disk orientations extracted at all wavelengths, I found evidence in 20 galaxies out of 46, that on radial ranges as large as 1/3 of the visible disk (as measured by R25), the shapes of isophotes are morphologically similar. Thus for these 20 galaxies I devised consistent disk orientations both for the stellar and dust content. These 20 galaxies are less luminous, less emitting in the IR w.r.t. the optical, less barred, and characterized by later stage types than average. I also found that the disk orientations devised by my photometric method yield results more similar to H-alpha kinematic orientations than other photometric studies based on a single isophote level.Using the orientations I found and H-alpha dynamics disk orientations, I averaged azimuthally surface brightnesses to produce radial spectral energy distributions (SED) profiles. Once fitted with a cosmic dust emission model, they resulted in radial profiles of dust and stellar content properties. I found the dust intercepted power to be proportionnal to the product of the total dust mass and the average ISRF shining on dust. This former quantity is better correlated with the bolometric stellar luminosity than any of the dust mass or the dust heating ISRF separately. Thus the old stellar populations may be an important heating source for dust. The power intercepted by dust is also very well correlated with the total infrared power. The dust intercepts a larger quantity of power coming from stars in more actively star forming galaxies.Dust exhibit radial mass surface density profiles less well described by Sersic functions than stellar ones. When both profiles are well fitted by Sersic functions, stellar density profiles have smaller half mass radii than the isophotal optical radius (R25) separately in later type galaxies, but also in more quiescent galaxies. Sersic index and half mass radius distributions have larger widths for dust than for stellar surface density profiles.I also found that the ratio of dust over stellar surface density is an important factor to explain the variations with galactic morphological type of the ratio of dust intercepted power over the power emitted by old stellar populations. This later link could be intertwined with spiral structure strength in stage types later than 2.

Scientific And Technical Aerospace Reports

DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1994

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics categories.

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.