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Observational astronomy has shown significant growth over the last decade and has made important contributions to cosmology. A major paradigm shift in cosmology was brought about by observations of Ty...
Hubble Space Telescope Imaging and Spectral Analysis of Two Brown Dwarf Binaries at the L Dwarf/T Dwarf Transition
binaries visual — stars individual stars
2010/11/10
We present a detailed examination of the brown dwarf multiples 2MASS J08503593+1057156 and
2MASS J17281150+3948593, both suspected of harboring components that straddle the L dwarf/T
dwarf transitio...
Power Spectrum Analysis of Mount-Wilson Solar Diameter Measurements: Evidence for Solar Internal R-mode Oscillations
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
This article presents a power-spectrum analysis of 39,024 measurements of the solar diameter made at the Mount Wilson Observatory from 1968.670 to 1997.965. This power spectrum contains a number of ve...
Photometric Observation and Light Curve Analysis of Binary System ER-Orionis
Photoelectric photometry—eclipsing binaries—overcontact systems
2010/9/15
Photometric observations of the over-contact binary ER ORI were performed during November 2007 and February to April 2008 with the 51 cm telescope of Biruni Observatory of Shiraz University in U, B an...