883 citations · 4.6k across the 45 of their papers we have counts for
46 papers
Diameters and Temperatures VII: High-angular resolution measurements of Solar-type stars with the CHARA Array
Tabetha S. Boyajian, Ashley A. Elliott, Emelly D. Tiburcio +8
We present interferometric measurements of angular diameters for 27 nearby solar-type stars obtained with the Precision Astronomical Visible Observations (PAVO) beam combiner at th…
Spectral Energy Distribution Analysis for Habitable Worlds Observatory Target Stars
Stephen R. Kane, Kaspar von Braun, Tara Fetherolf +1
The Habitable Worlds Observatory (HWO) will directly image and characterize planets potentially similar to Earth orbiting nearby stars. Accurate stellar properties, particularly ef…
The POKEMON Speckle Survey of Nearby M dwarfs. IV. Distance-Limited Catalog (POKEMON-DLC)
Catherine A. Clark, Zafar Rustamkulov, Gerard T. van Belle +5
The Solar Neighborhood is dominated by stars smaller, colder, and fainter than the Sun: the M dwarfs. If we are to understand the context in which the Sun formed and evolved, then…
The POKEMON Speckle Survey of Nearby M Dwarfs. III. The Stellar Multiplicity Rate of M Dwarfs within 15 pc
Catherine A. Clark, Gerard T. van Belle, Elliott P. Horch +8
M dwarfs are ubiquitous in our galaxy, and the rate at which they host stellar companions, and the properties of these companions, provides a window into the formation and evolutio…
Measuring the Stellar and Planetary Properties of the 51 Eridani System
Ashley Elliott, Tabetha Boyajian, Tyler Ellis +3
In order to study exoplanets, a comprehensive characterization of the fundamental properties of the host stars, such as angular diameter, temperature, luminosity, and age, is essen…
The POKEMON Speckle Survey of Nearby M Dwarfs. II. Observations of 1125 Targets
Catherine A. Clark, Gerard T. van Belle, Elliott P. Horch +7
Stellar multiplicity is correlated with many stellar properties, yet multiplicity measurements have proven difficult for the M dwarfs -- the most common type of star in our galaxy…
The POKEMON Speckle Survey of Nearby M Dwarfs. I. New Discoveries
Catherine A. Clark, Gerard T. van Belle, Elliott P. Horch +4
M dwarfs are favorable targets for exoplanet detection with current instrumentation, but stellar companions can induce false positives and inhibit planet characterization. Knowledg…
Direct Measurements of Giant Star Effective Temperatures and Linear Radii: Calibration Against Spectral Types and V-K Color
Gerard T. van Belle, Kaspar von Braun, David R. Ciardi +8
We calculate directly determined values for effective temperature () and radius () for 191 giant stars based upon high resolution angular size measurements from opt…
Precision Stellar Characterization of FGKM Stars using an Empirical Spectral Library
Samuel W. Yee, Erik A. Petigura, Kaspar von Braun
Classification of stars, by comparing their optical spectra to a few dozen spectral standards, has been a workhorse of observational astronomy for more than a century. Here, we ext…
Three Temperate Neptunes Orbiting Nearby Stars
Benjamin J. Fulton, Andrew W. Howard, Lauren M. Weiss +17
We present the discovery of three modestly-irradiated, roughly Neptune-mass planets orbiting three nearby Solar-type stars. HD 42618 b has a minimum mass of M$_{\opl…
A High-Precision NIR Survey for RV Variable Low-Mass Stars
Jonathan Gagné, Peter Plavchan, Peter Gao +26
We present the results of a precise near-infrared (NIR) radial velocity (RV) survey of 32 low-mass stars with spectral types K2-M4 using CSHELL at the NASA IRTF in the -band wit…
Retrieval of Precise Radial Velocities from Near-Infrared High Resolution Spectra of Low Mass Stars
Peter Gao, Peter Plavchan, Jonathan Gagné +21
Given that low-mass stars have intrinsically low luminosities at optical wavelengths and a propensity for stellar activity, it is advantageous for radial velocity (RV) surveys of t…
Follow-Up Observations of PTFO 8-8695: A 3 MYr Old T-Tauri Star Hosting a Jupiter-mass Planetary Candidate
David R. Ciardi, J. C. van Eyken, J. W. Barnes +13
We present Spitzer 4.5\micron\ light curve observations, Keck NIRSPEC radial velocity observations, and LCOGT optical light curve observations of PTFO~8-8695, which may host a Jupi…
Revised Filter Profiles and Zero Points for Broadband Photometry
Andrew W. Mann, Kaspar von Braun
Estimating accurate bolometric fluxes for stars requires reliable photometry to absolutely flux calibrate the spectra. This is a significant problem for studies of very bright star…
How to Constrain Your M Dwarf: measuring effective temperature, bolometric luminosity, mass, and radius
Andrew W. Mann, Gregory A. Feiden, Eric Gaidos +2
Precise and accurate parameters for late-type (late K and M) dwarf stars are important for characterization of any orbiting planets, but such determinations have been hampered by t…
Stellar Parameters for HD 69830, a Nearby Star with Three Neptune Mass Planets and an Asteroid Belt
Angelle Tanner, Tabetha S. Boyajian, Kaspar von Braun +9
We used the CHARA Array to directly measure the angular diameter of HD 69830, home to three Neptune mass planets and an asteroid belt. Our measurement of 0.674+/-0.014 milli-arcsec…
Stellar Diameters and Temperatures VI. High angular resolution measurements of the transiting exoplanet host stars HD 189733 and HD 209458 and implications for models of cool dwarfs
Tabetha Boyajian, Kaspar von Braun, Gregory A. Feiden +24
We present direct radii measurements of the well-known transiting exoplanet host stars HD 189733 and HD 209458 using the CHARA Array interferometer. We find the limb-darkened angul…
Touchstone Stars: Highlights from the Cool Stars 18 Splinter Session
Andrew W. Mann, Adam Kraus, Tabetha Boyajian +11
We present a summary of the splinter session on "touchstone stars" -- stars with directly measured parameters -- that was organized as part of the Cool Stars 18 conference. We disc…
Benchmark stars for Gaia: fundamental properties of the Population II star HD140283 from interferometric, spectroscopic and photometric data
O. Creevey, F. Thévenin, P. Berio +17
We determined the fundamental properties of HD 140283 by obtaining new interferometric and spectroscopic measurements and combining them with photometry from the literature. The in…
Characterizing the Parents: Exoplanets Around Cool Stars
Kaspar von Braun, Tabetha S. Boyajian, Gerard T. van Belle +2
The large majority of stars in the Milky Way are late-type dwarfs, and the frequency of low-mass exoplanets in orbits around these late-type dwarfs appears to be high. In order to…
Direct Imaging of Planet Transit Events
Gerard T. van Belle, Kaspar von Braun, Tabetha Boyajian +1
Exoplanet transit events are attractive targets for the ultrahigh-resolution capabilities afforded by optical interferometers. The intersection of two developments in astronomy ena…
Stellar Diameters and Temperatures V. Eleven Newly Characterized Exoplanet Host Stars
Kaspar von Braun, Tabetha S. Boyajian, Gerard T. van Belle +17
We use near-infrared interferometric data coupled with trigonometric parallax values and spectral energy distribution fitting to directly determine stellar radii, effective tempera…
Stellar Diameters and Temperatures IV. Predicting Stellar Angular Diameters
Tabetha Boyajian, Gerard van Belle, Kaspar von Braun
The number of stellar angular diameter measurements has greatly increased over the past few years due to innovations and developments in the field of long baseline optical interfer…
Predicting Stellar Angular Sizes
Kaspar von Braun, Tabetha S. Boyajian, Gerard T. van Belle
Our survey of long-baseline infrared and optical interferometry measurements is producing considerable numbers of directly determined stellar angular sizes. We use our sample of 12…