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Development Of A Near Infrared Camera For Conducting A Survey Of Northern Galactic Cepheid Variable Stars
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Book Synopsis Development of a Near Infrared Camera for Conducting a Survey of Northern Galactic Cepheid Variable Stars by : Andrew John Monson
Download or read book Development of a Near Infrared Camera for Conducting a Survey of Northern Galactic Cepheid Variable Stars written by Andrew John Monson and published by . This book was released on 2009 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past few decades there has been growing realization that the Cepheid Near-Infrared (NIR) Period-Luminosity (PL) relation is superior to the Optical PL relation, however, there has been little to no new NIR data gathered on Galactic Cepheids despite the growing popularity and availability of NIR detectors. Galactic Cepheids are, in general, too bright to be observed by telescopes with apertures larger than 1-meter and most NIR detector arrays are too costly to justify placing on sub-1m class telescopes. I describe the development of a near-infrared (NIR) camera for the University of Wyoming's 0.6m telescope at Red Buttes Observatory. The camera, known as BIRCAM (Buttes InfraRed CAMera), was conceived to be a temporary, inexpensive test-bed instrument designed to test the electronic and cryo-mechanical components of another large-scale NIR imaging camera. BIRCAM was designed to make use of a CMOS HgCdTe Hawaii-2 detector array sensitive from 0.9-2.5 microns and during its relatively short lifetime I used BIRCAM to synoptically survey 130 fields containing Galactic Cepheids. These data will help provide the means to calibrate the NIR Cepheid Period-Luminosity Relation. The Cepheid Period-Luminosity (PL) Relation is fundamental to determining distances to nearby galaxies and as such is essential to calibrating the distance scale of the Universe. The accuracy and precision of the distance scale is determined in part by the accuracy and precision of the Galactic PL relation. Observations of Galactic Cepheids in the NIR play an important role in reducing systematic errors inherent to optical observations. The future calibration and refinement of the distance scale relies on providing accurate NIR photometry of Galactic Cepheid Variable Stars. Current photometric studies of Galactic Cepheids in the NIR are limited in size and homo-geneity. The goal of this project is to provide a homogenous photometric study that triples the number of well-sampled Galactic Cepheid light-curves. In conjunction with future astrometric data from GAIA and/or SIM these data will enable the accurate and precise calibration of the Galactic NIR Cepheid Period-Luminosity Relation. I have obtained the NIR light-curves for 131 Northern Galactic Cepheids. With these light-curves I have determined the mean intensity weighted NIR magnitudes and using a subset of 19 Galactic Cepheids with currently known distances and extinctions I have created a Galactic NIR PL relation. The NIR PL relation determined shows a dispersion of 0.13 mag and a slope which is indistinguishable from that of Cepheids in the Large Magellanic Cloud (LMC). The scatter is as small as any survey to date and attests to the quality of the survey data and the potential of the full data set. I have used the Galactic NIR PL relation to determine a distance modulus of 18:49 ± 0:06 to the LMC, consistent with the generally accepted value. I also report on the serendipitous photometric discovery of 72 previously unclassified Galactic Variables. The individual data for each star are presented in the Supplemental Data document available upon request to the author.
Book Synopsis A Deep Near-infrared Objective-prism Survey for Carbon Stars Toward the Galactic Center and Anticenter by : Francisco Jose Fuenmayor
Download or read book A Deep Near-infrared Objective-prism Survey for Carbon Stars Toward the Galactic Center and Anticenter written by Francisco Jose Fuenmayor and published by . This book was released on 1980 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Log of the Near Infrared Photographic Sky Survey by : Eric R. Craine
Download or read book Log of the Near Infrared Photographic Sky Survey written by Eric R. Craine and published by . This book was released on 1988 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721510573 Total Pages :34 pages Book Rating :4.5/5 (15 download)
Book Synopsis Detection of the Near-IR Cosmic Infrared Background Using Alternative Models of Near-IR Galactic Emission in the Dirbe Data by : National Aeronautics and Space Administration (NASA)
Download or read book Detection of the Near-IR Cosmic Infrared Background Using Alternative Models of Near-IR Galactic Emission in the Dirbe Data written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis portion of this task has been completed. New models were developed for the removal of the near-infrared emission of Galactic stars in the DIRBE data. Subtraction of these models from the observed emission attempted to achieve a better detection of the Cosmic Infrared Background at near-infrared wavelengths. The new models were found to provide a large improvement in the isotropy of the residual emission, however constraints on the intensity of the emission are not significantly improved. A paper detailing the procedures and results has been drafted, and will be completed next year. The draft of this paper is included as the final report on the contract. Arendt, Richard G. and Dwek, Eli and Oliversen, Ronald J. (Technical Monitor) Goddard Space Flight Center RTSC-3458
Author :Thomas Michael Herbst Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :354 pages Book Rating :4.E/5 ( download)
Book Synopsis New Views in the Near Infrared by : Thomas Michael Herbst
Download or read book New Views in the Near Infrared written by Thomas Michael Herbst and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1990 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Detection of the Near-Ir Cosmic Infrared Background Using Alternative Models of Near-Ir Galactic Emission in the Dirbe Data by : Nasa Technical Reports Server (Ntrs)
Download or read book Detection of the Near-Ir Cosmic Infrared Background Using Alternative Models of Near-Ir Galactic Emission in the Dirbe Data written by Nasa Technical Reports Server (Ntrs) and published by BiblioGov. This book was released on 2013-08 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis portion of this task has been completed. New models were developed for the removal of the near-infrared emission of Galactic stars in the DIRBE data. Subtraction of these models from the observed emission attempted to achieve a better detection of the Cosmic Infrared Background at near-infrared wavelengths. The new models were found to provide a large improvement in the isotropy of the residual emission, however constraints on the intensity of the emission are not significantly improved. A paper detailing the procedures and results has been drafted, and will be completed next year. The draft of this paper is included as the final report on the contract.
Book Synopsis Near Infrared Spectrophotometry and the 2.2 Micron Galactic Survey by : Peter Laurence Hammersley
Download or read book Near Infrared Spectrophotometry and the 2.2 Micron Galactic Survey written by Peter Laurence Hammersley and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ten Thousand Stars and One Black Hole by : Sascha Trippe
Download or read book Ten Thousand Stars and One Black Hole written by Sascha Trippe and published by . This book was released on 2008 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Near Infrared Photographic Sky Survey by : George S. Rossano
Download or read book Near Infrared Photographic Sky Survey written by George S. Rossano and published by . This book was released on 1980 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Near Infrared Photometry of Long Period Variable Stars by : Thomas Grady Barnes
Download or read book Near Infrared Photometry of Long Period Variable Stars written by Thomas Grady Barnes and published by . This book was released on 1970 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Near Infrared Tully-Fisher Survey Behind the Galactic Plane by : Wendy L. Williams
Download or read book A Near Infrared Tully-Fisher Survey Behind the Galactic Plane written by Wendy L. Williams and published by . This book was released on 2011 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :François Piché Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :626 pages Book Rating :4.:/5 (281 download)
Book Synopsis A Near-infrared Survey of the Star Forming Region NGC 2264 [microform] by : François Piché
Download or read book A Near-infrared Survey of the Star Forming Region NGC 2264 [microform] written by François Piché and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1992 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Battery Powered Near Infrared (NIR) Camera for the MIT HelioDome by : Keith Martin Molina
Download or read book A Battery Powered Near Infrared (NIR) Camera for the MIT HelioDome written by Keith Martin Molina and published by . This book was released on 2008 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research in advanced fenestration systems has led to the development of the Heliodome project at the Massachusetts Institute of Technology Daylighting Laboratory. The MIT Heliodome project is dedicated to goniophotometry and the assessment of bidirectional photometric properties of light- (or heat- )redirecting facade systems by using digital cameras as multiple-points photosensors, that cover the visible and near infrared portions of the sunlight spectrum. Two cameras are used in this device: a charge couple device (CCD) camera using silicon detectors and a near infrared (NIR) camera using InGaAs sensors. Both cameras are mounted to a table which has two degrees of rotational freedom, altitude and azimuth. Using the rotating table and cameras in combination with an ellipsoidal dome, which is coated with a semi-transparent specula coating, allows a time-efficient and continuous measurement of bidirectional transmission (or reflection) density functions (BTDFs or BRDFs). This thesis seeks to enhance current Heliodome operations by developing a portable power source for the NIR camera. A portable power system has been designed and constructed to operate the NIR camera during measurement sessions. The portable power system allows the rotating table to rotate completely free of constraints caused by weight, imbalance, power and light path obstruction issues. This contribution to the Heliodome project provides the user with more reliable data and relief from disorderly setup.
Book Synopsis Spectrophotometry of Cool Stars in the Near Infrared by : K. Nandy
Download or read book Spectrophotometry of Cool Stars in the Near Infrared written by K. Nandy and published by . This book was released on 1976 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectrophotometry of Cool Stars in the Near Infrared by : Kashinath Nandy
Download or read book Spectrophotometry of Cool Stars in the Near Infrared written by Kashinath Nandy and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Cameras in Science Education by : Jesper Haglund
Download or read book Thermal Cameras in Science Education written by Jesper Haglund and published by Springer. This book was released on 2022-03-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a collection of educational research and developmental efforts on the rapidly emerging use of infrared cameras and thermal imaging in science education. It provides an overview of infrared cameras in science education to date, and of the physics and technology of infrared imaging and thermography. It discusses different areas of application of infrared cameras in physics, chemistry and biology education, as well as empirical research on students’ interaction with the technology. It ends with conclusions drawn from the contributions as a whole and a formulation of forward-looking comments.
Book Synopsis Parameterizing the Dust Around Herbig Ae/Be Stars by : Ryan Lee Doering
Download or read book Parameterizing the Dust Around Herbig Ae/Be Stars written by Ryan Lee Doering and published by ProQuest. This book was released on 2008 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed dust modeling of HD 97048 and HD 100546 was carried out with a two-component geometry consisting of a flared disk and an extended envelope. The models achieve a reasonable global fit to the spectral energy distributions, and produce images with the desired geometry. The disk midplane densities are found to go as r-0.5 and r -1.8, giving disk dust masses of 3.0 x 10-4 and 5.9 x 10-5 M⊙ for HD 97048 and HD 100546, respectively. A gas-to-dust mass ratio lower limit of 3.2 was calculated for HD 97048.
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