http://hdl.handle.net/10125/770 Sat, 25 May 2013 02:59:22 GMT 2013-05-25T02:59:22Z http://hdl.handle.net/10125/20415 Thesis (Ph.D.)--University of Hawaii at Manoa, 2008.; Majority of our candidate quasars turned out to be strong emission line galaxies at z < 1, whose large equivalent widths and low metal contents suggest they are very young systems which have just undergone starbursts within a few Myrs. In order to systematically search for these Ultra-Strong Emission Line galaxies (USELs), we used narrowband selected samples from Hu's ultra-deep multiwavelength data. The followup Keck/DEIMOS spectra have revealed their high star formation density (5--10% of UV measurements at z = 0--1), which is a significant contribution at a epoch when cosmic star formation is in its peak. Many of the USELs show [OIII]lambda4363 auroral lines and about a dozen satisfy the criteria for eXtremely Metal Poor Galaxies (XMPGs). Our XMPGs are the most distant known today. Our high yield rate of XMPGs suggests that narrowband method is powerful in finding such populations. Strikingly, a few of our XMPGs have metallities close to the most metal-poor galaxy. Our discovery indicates that galaxies are still forming in relatively chemically pristine sites at z ∼ 1.; The present thesis reports the results from the Hawaii Quasar and T dwarf survey (HQT survey), which is a wide-field optical imaging survey conducted with Subaru/Suprime-Cam. The HQT survey was designed to search for low-luminosity quasars (M1450 < --22.5) at high-redshift (z > 5.7) as well as T dwarfs, both of which are selected by their very red optical I--z' colors. We developed a new color selection technique using a narrowband NB816 filter in order to break a well-known color degeneracy between quasars and foreground M and L dwarfs. The follow-up Keck/DEIMOS spectroscopy and near-IR imaging with various instruments on Mauna Kea have demonstrated the effectiveness of our technique, and have successfully revealed six faint T dwarfs (J < 20). These dwarfs are among the most distant spectroscopically known (60--170 pc) and they provide an indirect support for the high binary fraction at L/T transition. The non-detection of z > 5.7 quasars in our survey is consistent with the present picture of the cosmic reionization in which quasars are negligible contributor to the cosmic reionization. With our survey area coverage (9.3 deg2) and depths (ZAB < 23.3), we were able to set strong constraints on the faint-end slope of the quasar luminosity function.; Includes bibliographical references.; Also available by subscription via World Wide Web; 150 leaves, bound 29 cm Tue, 01 Jan 2008 00:00:00 GMT http://hdl.handle.net/10125/20415 2008-01-01T00:00:00Z Kakazu, Yuko K. M http://hdl.handle.net/10125/20414 Thesis (Ph.D.)--University of Hawaii at Manoa, 2008.; The near-star environment around young stars is very dynamic with winds, disks, and outflows. These processes are involved in star and planet formation, and influence the formation and habitability of planets around host stars. Even for the closest young stars, this will not be imaged by the next generation of telescopes. Other proxies must be developed to probe the circumstellar environment.; The polarization of light across individual spectral lines is such a proxy that contains information about the circumstellar material on small spatial scales. Many models have been created to relate the circumstellar environment to observable polarization changes across spectral lines. However, measuring signals at the 0.1% level requires a very careful control of systematic effects. We have recently built a high-resolution spectropolarimeter for the HiVIS spectrograph on the 3.67m AEOS telescope to address these issues.; This thesis presents a large spectropolarimetric study that combines new instrumentation, custom processing software, thorough calibrations, cross-instrument comparisons, a massive observing campaign on many targets larger than most studies to date combined, comparison of current theories on multiple objects and finally the creation of a new theory.; We developed a new spectropolarimetric model and argue that polarization in absorption is evidence of optical pumping. We argue that, while scattering theory fits many Be and emission-line star observations, this new theory has much more potential to explain polarization-in-absorption as seen in Herbig Ae/Be and other stellar systems.; We have obtained a large number of high precision spectropolarimetric observations of Herbig Ae/Be, Classical Be and other emission-line stars collected on 117 nights of observations. Many stars showed systematic variations in the linear polarization amplitude and direction as a function of time and wavelength in the Halpha line. The detected linear polarization varies from our typical detection threshold near 0.1% up to 2%. Surprisingly, in several stars this polarization effect is not coincident with the Halpha emission peak but is detected only in the absorptive part of the line profile and varies with the absorption. These detections are largely inconsistent with the traditional scattering models and inspired a new explanation of their polarization.; Includes bibliographical references (leaves 238-245).; Also available by subscription via World Wide Web; 245 leaves, bound 29 cm Tue, 01 Jan 2008 00:00:00 GMT http://hdl.handle.net/10125/20414 2008-01-01T00:00:00Z Harrington, David M http://hdl.handle.net/10125/20413 Thesis (Ph.D.)--University of Hawaii at Manoa, 2008.; Black holes are not only an integral component of galaxies, but they also appear to have played a fundamental role in galaxy evolution. It is theorized that galaxy-scale feedback from high-redshift quasars is key to understanding the properties of the most massive galaxies today. However, direct observations of the feedback have been lacking. Our observations on the extended nebulae around low-redshift quasars show that recent quasar-driven superwinds have drastically altered their environments. The superwind is capable of ejecting most of the interstellar medium to large distances, demonstrating an efficient mechanism that can regulate both star formation and black hole growth. Such superwinds provide local analogs of the quasar feedback hypothesized to have happened in the early universe. Studies of these objects can thus provide important insights into this key stage of galaxy evolution. It was discovered that quasars surrounded by extended nebulae are consuming low-metallicity gas. This finding not only provided the first direct observational evidence that the gas from a merger can indeed be driven to the feeding distance of the central black hole, but also validated the existence of low-metallicity quasars and placed a key constraint on quasar superwind models.; Includes bibliographical references (leaves 152-163).; Also available by subscription via World Wide Web; 163 leaves, bound 29 cm Tue, 01 Jan 2008 00:00:00 GMT http://hdl.handle.net/10125/20413 2008-01-01T00:00:00Z Fu, Hai http://hdl.handle.net/10125/12106 Typescript.; Thesis (Ph. D.)--University of Hawaii at Manoa, 1975.; Bibliography: leaves 178-182.; x, 182 leaves ill Wed, 01 Jan 1975 00:00:00 GMT http://hdl.handle.net/10125/12106 1975-01-01T00:00:00Z Martin, Terry Zachry http://hdl.handle.net/10125/12105 Mode of access: World Wide Web.; Thesis (Ph. D.)--University of Hawaii at Manoa, 2005.; Includes bibliographical references.; Electronic reproduction.; Also available by subscription via World Wide Web; xvii, 261 leaves, bound ill. (some col.) 29 cm Sat, 01 Jan 2005 00:00:00 GMT http://hdl.handle.net/10125/12105 2005-01-01T00:00:00Z Dahm, Scott E http://hdl.handle.net/10125/12104 Thesis (Ph. D.)--University of Hawaii at Manoa, 2005.; Includes bibliographical references.; Also available by subscription via World Wide Web; xvii, 281 leaves, bound ill., charts 29 cm Sat, 01 Jan 2005 00:00:00 GMT http://hdl.handle.net/10125/12104 2005-01-01T00:00:00Z Rothberg, Barry S http://hdl.handle.net/10125/12103 Mode of access: World Wide Web.; Thesis (Ph. D.)--University of Hawaii at Manoa, 2005.; Includes bibliographical references (leaves 136-146).; Electronic reproduction.; Also available by subscription via World Wide Web; xvi, 146 leaves, bound col. ill. 29 cm Sat, 01 Jan 2005 00:00:00 GMT http://hdl.handle.net/10125/12103 2005-01-01T00:00:00Z Novicki, Megan C http://hdl.handle.net/10125/12102 Thesis (Ph. D.)--University of Hawaii at Manoa, 2004.; Includes bibliographical references (leaves 134-139).; Also available by subscription via World Wide Web; xvi, 139 leaves, bound ill. 29 cm Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/10125/12102 2004-01-01T00:00:00Z Armstrong, James D, 1970 http://hdl.handle.net/10125/12101 Mode of access: World Wide Web.; Thesis (Ph. D.)--University of Hawaii at Manoa, 2004.; Includes bibliographical references (leaves 246-257).; Electronic reproduction.; Also available by subscription via World Wide Web; xviii, 257 leaves, bound ill. (some col.) 29 cm Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/10125/12101 2004-01-01T00:00:00Z Sheppard, Scott S http://hdl.handle.net/10125/12100 Thesis (Ph. D.)--University of Hawaii at Manoa, 2004.; Includes bibliographical references (leaves 187).; Also available by subscription via World Wide Web; xxiii, 187 leaves, bound ill. 29 cm Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/10125/12100 2004-01-01T00:00:00Z Garland, Catherine A http://hdl.handle.net/10125/12099 Mode of access: World Wide Web.; Thesis (Ph. D.)--University of Hawaii at Manoa, 2004.; Includes bibliographical references (leaves 180-192).; Electronic reproduction.; Also available by subscription via World Wide Web; xviii, 192 leaves, bound col. ill. 29 cm Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/10125/12099 2004-01-01T00:00:00Z Capak, Peter L http://hdl.handle.net/10125/12098 Thesis (Ph. D.)--University of Hawaii at Manoa, 2004.; Includes bibliographical references.; Also available by subscription via World Wide Web; xxxiii, 335 leaves, bound ill. 29 cm Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/10125/12098 2004-01-01T00:00:00Z Barris, Brian J http://hdl.handle.net/10125/12097 Mode of access: World Wide Web.; Thesis (Ph. D.)--University of Hawaii at Manoa, 2004.; Includes bibliographical references.; Electronic reproduction.; Also available by subscription via World Wide Web; xxix, 502 leaves, bound ill. (some col.) 29 cm Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/10125/12097 2004-01-01T00:00:00Z Ishida, Catherine Mie http://hdl.handle.net/10125/12096 Mode of access: World Wide Web.; Thesis (Ph. D.)--University of Hawaii at Manoa, 2004.; On title page "[mu]" appears as Greek symbol.; Includes bibliographical references (leaves 167-180).; Electronic reproduction.; Also available by subscription via World Wide Web; xiv, 180 leaves, bound col. ill. 29 cm Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/10125/12096 2004-01-01T00:00:00Z Cushing, Michael C http://hdl.handle.net/10125/10391 Mon, 01 Aug 2005 00:00:00 GMT http://hdl.handle.net/10125/10391 2005-08-01T00:00:00Z Dundon, Luke R. http://hdl.handle.net/10125/9357 Scientific symbol in title.; Thesis (Ph. D.)--University of Hawaii at Manoa, 1995.; Includes bibliographical references (leaves 118-124).; Microfiche.; xi, 124 leaves, bound ill. 29 cm Sun, 01 Jan 1995 00:00:00 GMT http://hdl.handle.net/10125/9357 1995-01-01T00:00:00Z Ridgway, Susan E http://hdl.handle.net/10125/9356 Thesis (Ph. D.)--University of Hawaii at Manoa, 1995.; Includes bibliographical references (leaves 106-112).; Microfiche.; x, 112 leaves, bound ill. (some col.) 29 cm Sun, 01 Jan 1995 00:00:00 GMT http://hdl.handle.net/10125/9356 1995-01-01T00:00:00Z Patten, Brian Michael http://hdl.handle.net/10125/9355 Thesis (Ph. D.)--University of Hawaii at Manoa, 1995.; Includes bibliographical references.; Microfiche.; xiv, 184 leaves, bound ill. 29 cm Sun, 01 Jan 1995 00:00:00 GMT http://hdl.handle.net/10125/9355 1995-01-01T00:00:00Z Egami, Eiichi http://hdl.handle.net/10125/9354 Thesis (Ph. D.)--University of Hawaii at Manoa, 1995.; Includes bibliographical references (leaves 194-200).; Microfiche.; xiv, 200 leaves, bound ill. 29 cm Sun, 01 Jan 1995 00:00:00 GMT http://hdl.handle.net/10125/9354 1995-01-01T00:00:00Z Goldader, Jeffrey Dale http://hdl.handle.net/10125/9353 Thesis (Ph. D.)--University of Hawaii at Manoa, 1995.; Includes bibliographical references.; Microfiche.; xii, 158 leaves, bound ill. 29 cm Sun, 01 Jan 1995 00:00:00 GMT http://hdl.handle.net/10125/9353 1995-01-01T00:00:00Z Leka, Kimberly Dawn