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Full-Text Articles in Physics
Kinematics Of Subluminous O And B Stars By Surface Helium Abundance, P. Martin, C. S. Jeffery, Naslim N., V. M. Woolf
Kinematics Of Subluminous O And B Stars By Surface Helium Abundance, P. Martin, C. S. Jeffery, Naslim N., V. M. Woolf
Physics Faculty Publications
The majority of hot subdwarf stars are low-mass core-helium-burning stars. Their atmospheres are generally helium deficient; however, a minority have extremely helium-rich surfaces. An additional fraction have an intermediate surface-helium abundance, occasionally accompanied by peculiar abundances of other elements. We have identified a sample of 88 hot subdwarfs including 38 helium-deficient, 27 intermediate-helium and 23 extreme-helium stars for which radial-velocity and proper-motion measurements, together with distances, allow a calculation of galactic space velocities. We have investigated the kinematics of these three groups to determine whether they belong to similar or different Galactic populations. The majority of helium-deficient subdwarfs in our …
Surface-Enhanced Raman Scattering-Based Immunoassay Technologies For Detection Of Disease Biomarkers, Joseph Smolsky, Sukhwinder Kaur, Chihiro Hayashi, Surinder K. Batra, Alexey Krasnoslobodtsev
Surface-Enhanced Raman Scattering-Based Immunoassay Technologies For Detection Of Disease Biomarkers, Joseph Smolsky, Sukhwinder Kaur, Chihiro Hayashi, Surinder K. Batra, Alexey Krasnoslobodtsev
Physics Faculty Publications
Detection of biomarkers is of vital importance in disease detection, management, and monitoring of therapeutic efficacy. Extensive efforts have been devoted to the development of novel diagnostic methods that detect and quantify biomarkers with higher sensitivity and reliability, contributing to better disease diagnosis and prognosis. When it comes to such devastating diseases as cancer, these novel powerful methods allow for disease staging as well as detection of cancer at very early stages. Over the past decade, there have been some advances in the development of platforms for biomarker detection of diseases. The main focus has recently shifted to the development …
Subaru And Salt Spectroscopy Of Chemically Peculiar Hot Subdwarfs, C. Simon Jeffery, Naslim Neelamkodan, Vincent M. Woolf, Steven M. Crawford, Roy H. Østensen
Subaru And Salt Spectroscopy Of Chemically Peculiar Hot Subdwarfs, C. Simon Jeffery, Naslim Neelamkodan, Vincent M. Woolf, Steven M. Crawford, Roy H. Østensen
Physics Faculty Publications
The majority of hot subdwarfs lie on or close to the helium main-sequence. Many have hydrogen-rich surfaces, but a substantial fraction of the hotter subdwarfs have hydrogen-depleted or hydrogen-deficient surfaces. Amongst the former, three were known to show extraordinary overabundances of heavy elements including zirconium and lead. Using Subaru/HDS,we commenced a high-resolution survey of hydrogen-depleted subdwarfs to discover new members of the class. UVO 0825+15, was found to exhibit strong lead lines, to be an intrinsic variable in K2 field 5, and to have a relatively high space motion. Two other lead-rich subdwarfs have been found in the Subaru sample. …