Selected Publications

(Please see my CV for a list of all of my publications.)

Dressing, Newton, Charbonneau et al. 2016

Characterizing K2 Candidate Planetary Systems Orbiting Low-mass Stars I: Classifying Low-Mass Host Stars Observed During Campaigns 1-7

The K2 mission is observing thousands of cool dwarfs, but many K2 targets are not well characterized. I've been using IRTF/SpeX and Palomar/TSPEC to refine the properties of cooll dwarfs hosting candidate planetary systems. We present updated properties for 144 candidate host stars. In general, we find that the previous radius estimates for K2 cool dwarfs are underestimated by 10-40%, meaning that both the stars and planets are larger than initially expected. (Accepted to ApJ)

Dressing, Newton, Charbonneau et al. 2016

Characterizing K2 Candidate Planetary Systems Orbiting Low-mass Stars II: Planetary Systems Observed During Campaigns 1-7

In the second paper in our K2 cool dwarf series, we revisit the properties of the associated planet candidates by refitting the transit photometry and calculating the false positive probabilities for each candidate. We find that our sample contains 20 planets or planet candidates with radii smaller than 1.25 Earth radii, 20 super-Earths, 20 small Neptunes, three large Neptunes, and eight giant planets. Most of these planets are highly irradiated, but three orbit within optimistic habitable zone boundaries. (Submitted paper available on ADS)

Buchhave, Dressing, Dumusque et al. 2016

A 1.9 Earth radius rocky planet and the discovery of a non-transiting planet in the Kepler-20 system

The Kepler-20 system contains five small transiting planets experiencing a range of insolation fluxes. We observed the system with the HARPS-N spectrograph on the Telescopio Nazionale Galileo to determine the densities of these worlds and study the effects of insolation flux on atmospheric retention. We found that the innermost planet Kepler-20b appears to have a rocky composition despite its relatively large radius of 1.9 Earth radii. This planet is highly irradiated and likely experienced photoevaporation. (Accepted to AJ)

Dressing & Charbonneau 2015

Updated Planet Occurrence Rates for Small Stars

Using the full four-year Kepler data set, David Charbonneau and I found that small planets are common in the galaxy. On average, one out of every four low-mass stars harbors a potentially habitable Earth-sized planet. (Accepted to ApJ)

Dressing et al. 2015

The Mass of Kepler-93b and The Composition of Terrestrial Planets

In collaboration with the HARPS-N Consortium, I measured the mass of the small planet Kepler-93b and found that the densities of all small, highly-irradiated planets can be explained by a single Earth-like compositional model. (Accepted to ApJ)

Dressing et al. 2014

Adaptive Optics Images. III. 87 Kepler Objects of Interest

We used ARIES on the MMT to take high-resolution adaptive optics images of stars hosting planet candidates detected by the NASA Kepler mission. We found that some of the stars have nearby companions that could dilute the measured transit depths, leading to inaccurate planet radius estimates. (Accepted to AJ)

Dressing & Charbonneau 2013

The Occurrence Rate of Small Planets around Small Stars

We revised the properties of the coolest stars in the Kepler Input Catalog and made an initial estimate of the planet occurrence rate for low-mass stars. (Accepted to ApJ)