Search Publications
APOKASC-3: The Third Joint Spectroscopic and Asteroseismic Catalog for Evolved Stars in the Kepler Fields
Chaplin, William J.; Bell, Keaton J.; Cunha, Katia +38 more
In the third APOKASC catalog, we present data for the complete sample of 15,808 evolved stars with APOGEE spectroscopic parameters and Kepler asteroseismology. We used 10 independent asteroseismic analysis techniques and anchor our system on fundamental radii derived from Gaia L and spectroscopic Teff. We provide evolutionary state, ast…
A Compilation of Optical Starlight Polarization Catalogs
Blinov, D.; Panopoulou, G. V.; Soam, A. +7 more
Polarimetry of stars at optical and near-infrared wavelengths is an invaluable tool for tracing interstellar dust and magnetic fields. Recent studies have demonstrated the power of combining stellar polarimetry with distances from the Gaia mission, in order to gain accurate, 3D information on the properties of the interstellar magnetic field and t…
Hinode EIS: Updated In-flight Radiometric Calibration
Del Zanna, G.; Warren, H. P.; Weberg, M. J.
We present an update to the in-flight radiometric calibration of the Hinode Extreme Ultraviolet Imaging Spectrometer (EIS), revising and extending our previous studies. We analyze full-spectral EIS observations of quiet Sun (QS) and active regions (ARs) from 2007 until 2022. Using CHIANTI version 10, we adjust the EIS relative effective areas for …
Classification of Periodic Variable Stars from TESS
Liu, Jifeng; Wang, Shu; Chen, Xiaodian +1 more
The number of known periodic variable stars has increased rapidly in recent years. As an all-sky transit survey, the Transiting Exoplanet Survey Satellite (TESS) plays an important role in detecting low-amplitude variable stars. Using 2 minute cadence data from the first 67 sectors of TESS, we find 72,505 periodic variable stars. We used 19 parame…
Weak-lensing Characterization of the Dark Matter in 29 Merging Clusters that Exhibit Radio Relics
Jee, M. James; Finner, Kyle; van Weeren, Reinout J. +5 more
We present a multiwavelength analysis of 29 merging galaxy clusters that exhibit radio relics. For each merging system, we perform a weak-lensing analysis on Subaru optical imaging. We generate high-resolution mass maps of the dark matter distributions, which are critical for discerning the merging constituents. Combining the weak-lensing detectio…
ALMA Spectral Survey of an Eruptive Young Star, V883 Ori (ASSAY). II. Freshly Sublimated Complex Organic Molecules in the Keplerian Disk
Herczeg, Gregory J.; Johnstone, Doug; Lee, Jeong-Eun +9 more
We present an investigation of complex organic molecules (COMs) in the spatially resolved Keplerian disk around V883 Ori, an eruptive young star, based on a spectral survey carried out with the Atacama Large Millimeter/submillimeter Array in Band 6 (220.7‑274.9 GHz). We identified about 3700 molecular emission lines and discovered 23 COMs in the d…
Stellar Loci. VIII. Photometric Metallicities for 100 Million Stars Based on Synthetic Gaia Colors
Xiang, Maosheng; Huang, Yang; Beers, Timothy C. +4 more
We apply the stellar locus method to synthetic (BP–RP)XPSP and (BP–G)XPSP colors derived from corrected Gaia BP/RP (XP) spectra to obtain precise estimates of metallicity for about 100 million stars in the Milky Way (34 million giants in the color range 0.6 < (BP–RP)0 < 1.75 and 65 million dwarfs in the color…
UPdec-Webb: A Data Set for Coaddition of JWST NIRCam Images
Fang, Min; Cheng, Cheng; Kang, Xi +19 more
We present the application of the image coaddition algorithm, upsampling and point-spread function (PSF) deconvolution coaddition (UPDC), for stacking multiple exposure images captured by the James Webb Space Telescope (JWST) Near-Infrared Camera. By addressing the PSF effect, UPDC provides visually enhanced and sharper images. Furthermore, the an…
Ultraviolet Photometry and Habitable Zones of over 2700 Planet-hosting Stars
Liu, Jifeng; Wang, Song; Li, Xue +1 more
The ongoing discovery of exoplanets has sparked significant interest in finding suitable worlds that could potentially support life. Stellar ultraviolet (UV; 100–3000 Å) radiation may play a crucial role in determining the habitability of their planets. In this paper, we conducted a detailed analysis of the UV photometry of over 2700 host stars wi…
Fourier and Wavelet Analysis of Coronal Mass Ejections during Solar Cycles 23–25: Angular Widths and Latitudinal Distribution
Xu, Tingting; Deng, Linhua; Wan, Miao +6 more
Coronal mass ejections (CMEs), the large-scale eruptions of plasma and magnetic fields from the solar corona, play a critical role in space weather and solar–terrestrial interactions. Understanding the periodicities of CMEs is essential for predicting their occurrences and impacts, but their quasiperiodic variations in different cycles, at differe…