Search Publications
The Membership and Age of the Planet-hosting Young Star IRAS 04125+2902
Luhman, K. L.
A transiting planet was recently discovered around a star in the Taurus star-forming region, IRAS 04125+2902, making it one of the youngest known planets. The discovery paper cited two age estimates for IRAS 04125+2902, one based on a comparison to two sets of model isochrones in the Hertzsprung–Russell diagram and a second age reported by an earl…
A Refined Astrometric Approach Based on the Precision Premium and its Application to the Jupiter's Satellite Himalia
Li, D.; Lin, F. R.; Peng, Q. Y. +1 more
Since the advent of Gaia catalog, positional precision of a ground-based telescope can be greatly improved by correction of more subtle errors, including positional biases induced by atmospheric turbulence, and some instrumental factors such as geometric distortion and the charge transfer efficiency. In our previous work, the correlation of positi…
TESS Giants Transiting Giants. VII. A Hot Saturn Orbiting an Oscillating Red Giant Star
Trifonov, Trifon; Henning, Thomas; Sing, David K. +30 more
We present the discovery of TOI-7041 b (TIC 201175570b), a hot Saturn transiting a red giant star with measurable stellar oscillations. We observe solar-like oscillations in TOI-7041 with a frequency of maximum power of
Discovery and Characterization of an Eccentric, Warm Saturn Transiting the Solar Analog TOI-4994
Trifonov, Trifon; Henning, Thomas; Latham, David W. +46 more
We present the detection and characterization of TOI-4994b (TIC 277128619b), a warm Saturn-sized planet discovered by the NASA Transiting Exoplanet Survey Satellite. TOI-4994b transits a G-type star (V = 12.6 mag) with a mass, radius, and effective temperature of
Time-series Spectroscopy and TESS Photometry of the Oscillating Eclipsing Algol System V389 Cassiopeiae
Koo, Jae-Rim; Awiphan, Supachai; Hong, Kyeongsoo +4 more
We present the results from a detailed analysis of our time-series spectroscopic observations and the Transiting Exoplanet Survey Satellite (TESS) photometric data of the eclipsing binary V389 Cas. The radial velocities (RVs) of the primary and faint secondary components were obtained from a total of 61 high-resolution spectra made between 2016 an…
Discovery of a Jupiter Analog Misaligned to the Inner Planetary System in HD 73344
Huber, Daniel; Saunders, Nicholas; Fulton, Benjamin J. +6 more
We present the discovery of a Jupiter-like planet, HD 73344 d (
DECaPS and SMA Discovery of a Highly Inclined Class I Young Stellar Object with an Outflow: IRAS 08235–4316
Wilner, David J.; Rao, Ramprasad; Edenhofer, Gordian +4 more
We present images of IRAS 08235–4316 with the Dark Energy Camera Plane Survey (DECaPS; spanning 0.398–1.034 µm, at ∼1″ resolution) and the Submillimeter Array (SMA; at 1.38 mm (217 GHz) and ∼1
Forest Fire Clustering: A Novel Tool for Identifying Star Members of Clusters
Yang, Hao; Chen, Jing; Zhang, Su +6 more
In the era of a data-driven landscape, the development of an efficient and interpretable method has become a pivotal tool for robustly identifying memberships of clusters. We present a novel cluster finder approach called forest fire clustering (FFC). FFC combines iterative label propagation with parallel Monte Carlo simulation to achieve internal…
On the Age Calibration of Open Clusters Using Red Clump Stars
Worthey, Guy; Chriss, Abigail R.
In this study, we extend the dust-independent Hatzidimitriou relation between cluster age and dB‑R color difference between the red giant branch (RGB) and red clump to younger cluster ages. We perform membership analysis on 14 galactic open clusters using Gaia DR3 astrometry, then compute the difference in color of the RGB and red clump…
Orbital and Atmospheric Modeling of H II 1348B: An Eccentric Young Substellar Companion in the Pleiades
Wagner, Kevin; Stone, Jordan; Ertel, Steve +4 more
Brown dwarfs with known physical properties (e.g., age and mass) are essential for constraining models of the formation and evolution of substellar objects. We present new high-contrast imaging observations of the circumbinary brown dwarf H II 1348B—one of the few known substellar companions in the Pleiades cluster. We observed the system in the i…