27 citations · 53 across the 3 of their papers we have counts for
3 papers
astro-ph.EP2016★ 26 cited
Precise radial velocities of giant stars IX. HD 59686 Ab: a massive circumstellar planet orbiting a giant star in a ~13.6 au eccentric binary system
Mauricio Ortiz, Sabine Reffert, Trifon Trifonov +11
Context: For over 12 yr, we have carried out a precise radial velocity survey of a sample of 373 G and K giant stars using the Hamilton Échelle Spectrograph at Lick Observatory. Th…
astro-ph.EP2014★ 27 cited
Kepler-432 b: a massive warm Jupiter in a 52-day eccentric orbit transiting a giant star
Mauricio Ortiz, Davide Gandolfi, Sabine Reffert +8
We study the Kepler object Kepler-432, an evolved star ascending the red giant branch. By deriving precise radial velocities from multi-epoch high-resolution spectra of Kepler-432…
astro-ph.GA2009
Spectral Classification of Galaxies using the Principal Component Analysis: a Web Based Tool
Mauricio Ortiz, Gaspar Galaz
We have developed a web tool to perform Principal Component Analysis (PCA, Murtagh & Heck 1987; Kendall 1980) onto spectral data. The method is especially designed to perform spect…