Search Publications
Similarities and Differences between ICME-driven Shocks Observed by VEX (∼0.72 au) and WIND (∼1.0 au)
Xu, Qi; Feng, Xueshang; Shen, Zhenning +7 more
The features of interplanetary shocks driven by interplanetary coronal mass ejections (ICMEs) observed by WIND (∼1.0 au) and Venus Express (VEX; ∼0.72 au) during the same period are statistically analyzed by comparing their similarities and differences. It is found that the proportion of ICME-driven shocks in all shocks decreases slightly from ∼0.…
Longitudinal Dependence of Heavy Ion Composition in the 2021 October 28 Ground Level Enhancement Event
Mitchell, D. G.; McComas, D. J.; Mitchell, J. G. +19 more
The 2021 October 28 solar energetic particle (SEP) event was a rare ground level enhancement (GLE) event, where secondary particles from the interactions of SEPs with the Earth's atmosphere were detected by neutron monitors on the ground. A number of papers have examined the solar signatures, neutron monitor observations, and the characteristics o…
Compact [O III] Emission-line Regions ("Green Seeds") in Hα Emitters at Cosmic Noon from JWST Observations
Malkan, Matthew A.; Spitler, Lee; Motohara, Kentaro +1 more
We present a rest-frame optical, spatially resolved analysis of more than 100 Hα emitters (HAEs) at z ∼ 2.2 in the ZFOURGE-CDFS field using NIRCam imaging from the JWST Advanced Deep Extragalactic Survey. The ultradeep, high-resolution data give us maps of the resolved emission-line regions of HAEs with stellar mass ranging from 108 M
The Radiowave Hunt for Young Stellar Object Emission and Demographics (RADIOHEAD): A Radio Luminosity–Spectral Type Dependence in Taurus–Auriga YSOs
Wilner, David J.; Koch, Eric W.; Andrews, Sean M. +4 more
We measure the radio continuum fluxes at the locations of all Gaia-confirmed members of Taurus–Auriga using Karl G. Jansky Very Large Array Sky Survey data (VLASS; 2–4 GHz, σVLASS ~ 110–140 µJy, 2
On the Existence of Long-period Decayless Oscillations in Short Active Region Loops
Van Doorsselaere, Tom; Lim, Daye; Berghmans, David +5 more
Decayless kink oscillations, characterized by their lack of decay in amplitude, have been detected in coronal loops of varying scales in active regions, the quiet Sun, and coronal holes. Short-period (<50 s) decayless oscillations have been detected in short loops (< 50 Mm) within active regions. Nevertheless, long-period decayless oscillati…
Milky Way Classical Cepheid Distances from Calibrated Infrared Period–Luminosity–Metallicity Relations
Wang, Huajian; Chen, Xiaodian
Classical Cepheids (DCEPs) serve as fundamental standard candles for measuring cosmic distances and investigating the structure and evolution of the Milky Way disk. However, accurate distance estimation faces challenges due to severe extinction, particularly toward the Galactic center. Although the Gaia Wesenheit magnitude reduces extinction effec…
The S-PLUS 12-band Photometry as a Powerful Tool for Discovery and Classification: Ten Cataclysmic Variables in a Proof-of-concept Study
Mukai, Koji; Lopes de Oliveira, Raimundo; Schoenell, William +9 more
Multiband photometric surveys provide a straightforward way to discover and classify astrophysical objects systematically, enabling the study of a large number of targets at relatively low cost. Here we introduce an alternative approach to select accreting white dwarf (AWD) candidates following their spectral energy distribution, entirely supporte…
Derivation and Application of a Scaling between Hinode/SP and SDO/HMI Vector Magnetic Fields to Improve Magnetic Field Extrapolations
Yalim, M. S.; Hu, Q.; Prasad, A. +3 more
Full-disk measurements of the solar magnetic field by the Helioseismic and Magnetic Imager (HMI) are often used for magnetic field extrapolations, but its limited spatial and spectral resolution can lead to significant errors. We compare HMI data with observations of NOAA 12104 by the Hinode Spectropolarimeter (SP) to derive a scaling curve for th…
Dependence of Multiband Absolute Magnitudes and Color Indexes of the Tip of the Red Giant Branch Stars on Metallicity in Galactic Globular Clusters
Wang, Shu; Shao, Zhenzhen; Jiang, Biwei +3 more
The tip of the red giant branch (TRGB) stars have attracted intensive attention in recent years because their I-band absolute magnitudes, MI, are often used for distance calibration in the Hubble constant measurements because of its almost independence on metallicity ([Fe/H]). However, a discrepancy exists between various studies, and t…
Search for and Analysis of Eclipsing Binaries in the LAMOST Medium-resolution Survey Field. I. R.A.: 23h01m51s, Decl.: +34°36'45″
Guo, Ya-Ni; Li, Kai; Gao, Xing +7 more
Eclipsing binaries (EBs) play an important astrophysical role in studying stellar properties and evolution. By analyzing photometric data in the the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Medium-Resolution Survey field, R.A.: 23h01m51