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Showing 1 to 2 of 2 for “"vsini"”.
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The Formation of Brown Dwarfs
… by measurements of rotational velocities vsini from UVES spectra. The observations show that brown dwarfs at an age of 1-5 Myr display surface spots like T Tauri stars and are moderately fast rotators in contrast to rapidly rotating old brown dwarfs consistent with them being in an early …
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Development of a Method for Calculating Delta Scuti Rotational Velocities and Hydrogen Beta Color Indices
<p>To add to the understanding of the structure and evolution of Delta Scuti stars, 167 Delta Scutis north of -01 degrees declination and brighter than 13th magnitude have been observed spectroscopically. A method for calculating rotational velocity values and Hydrogen-Beta color indices for the …