Search
Now showing items 21-30 of 47
A Search for Pre-Main Sequence Eclipsing Binary Stars in the Lagoon Nebula
(Vanderbilt University. Dept. of Physics and Astronomy, 2009-04-20)
We report time-series CCD I-band photometry for the pre-main-sequence cluster NGC 6530, located within the Lagoon Nebula. The data were obtained with the 4Kx4K imager on the SMARTS 1.0m telescope at CTIO on 36 nights over ...
Measurement of Energy Spectrum of Electrons Field-Emitted from Diamond Field-Emitter Arrays
(Vanderbilt University. Dept. of Physics and Astronomy, 2009-04-20)
A retarding mesh analyzer was used to measure the electron energy spectrum field emitted from a single tip of a Diamond Field Emitter Array. The emission was dominated by adsorbed gas
atoms and molecules on the surface ...
Blazar Microvariations
(Vanderbilt University. Dept. of Physics and Astronomy, 2009-04-20)
In November 2006, the authors collected data on blazars PKS 0537-441, PKS
0447-439, and PKS 0208-5121 from the Cerra Tololo Inter-American Observatory in
Chile. All three blazars are tested for microvariability, first ...
Measuring Radial Velocities of Low Mass Eclipsing Binaries
(Vanderbilt University. Dept. of Physics and Astronomy, 2011-04)
Due to the complex nature of the spectra of low-mass M type stars, it
is difficult to determine their metallicities and temperatures
directly. By studying eclipsing binary pairs comprising one F, G, or
K type star with ...
Multipole mixing ratios of transitions out of high spin gamma vibrational states in neutron rich Mo, Ru isotopes
(Vanderbilt University. Dept. of Physics and Astronomy, 2010-04-27)
Current models of nuclear structure describe nuclear states in terms of
collective vibrations and rotations of a ground state. - One such quadrupole
vibrational band is the gamma-band formed by vibrations of the short ...
The distribution of ejected stars around a super massive black hole binary due to three-body scattering
(Vanderbilt University. Dept. of Physics and Astronomy, 2010-04)
Density profiles of dark matter halos
(Vanderbilt University. Dept. of Physics and Astronomy, 2010-04)
Dark radiation from particle decays during big bang nucleosynthesis
(Vanderbilt University. Dept. of Physics and Astronomy, 2012-04)
Cosmic microwave background (CMB) observations suggest the possibility of an extra dark
radiation component, while the current evidence from big bang nucleosynthesis (BBN) is more
ambiguous. Dark radiation from a decaying ...
Investigation of Electroosmotic Flow in Various Microfluidic Structures
(Vanderbilt University. Dept. of Physics and Astronomy, 2010-04)
Enclosed microfluidic devices provide excellent systems for the study of
biological processes such as cell-cell, paracrine, and autocrine signaling
systems. By minimizing the fluid volume within the chambers, ...
Rotation periods of the Hyades open cluster using ASAS light curves : measuring the Hyades gyro-age and benchmarking tools for gyrochronology studies with LSST
(Vanderbilt University. Dept. of Physics and Astronomy, 2012-04)
Rotation period distributions for older open clusters are difficult to
obtain because of the general scarcity of clusters with ages greater
than 200 Myr, as well as the challenge of measuring rotation periods
for less ...