183 citations · 644 across the 14 of their papers we have counts for
21 papers
MAROON-X: The first two years of EPRVs from Gemini North
Andreas Seifahrt, Jacob L. Bean, David Kasper +11
MAROON-X is a fiber-fed, optical EPRV spectrograph at the 8-m Gemini North Telescope on Mauna Kea, Hawai'i. MAROON-X was commissioned as a visiting instrument in December 2019 and…
Polluted White Dwarfs Reveal Exotic Mantle Rock Types on Exoplanets in our Solar Neighborhood
Keith D. Putirka, Siyi Xu
Prior studies have hypothesized that some polluted white dwarfs record continent-like granitic crust--which is abundant on Earth and perhaps uniquely indicative of plate tectonics.…
Exogeology from Polluted White Dwarfs
Siyi Xu, Amy Bonsor
It is difficult to study the interiors of terrestrial planets in the Solar System and the problem is magnified for distant exoplanets. However, sometimes nature is helpful. Some pl…
A Characterization of the Circumstellar Gas around WD 1124-293 using Cloudy
Amy Steele, John Debes, Siyi Xu +2
Between 30 - 50% of white dwarfs (WDs) show heavy elements in their atmospheres. This "pollution" is thought to arise from the accretion of planetesimals perturbed by outer planet(…
A Giant Planet Candidate Transiting a White Dwarf
Andrew Vanderburg, Saul A. Rappaport, Siyi Xu +61
Astronomers have discovered thousands of planets outside the solar system, most of which orbit stars that will eventually evolve into red giants and then into white dwarfs. During…
H--He collision-induced satellite in the Lyman- profile of DBA white dwarf stars
Nicole F. Allard, John F. Kielkopf, Siyi Xu +6
The spectra of helium-dominated white dwarf stars with hydrogen in their atmosphere present a distinctive broad feature centered around 1160~Å\/ in the blue wing of the Lyman- l…