Search Publications
The Long-term Monitoring Results of Insight-HXMT in the First 4 yr Galactic Plane Scanning Survey
Zhang, Shuang-Nan; Liu, Yuan; Wang, Chen +7 more
The first X-ray source catalog of the Insight-HXMT Galactic Plane (∣b∣ < 10°) Scanning Survey (GPSS) is presented based on the data accumulated from 2017 June to 2021 August. The 4 yr limit sensitivities at main energy bands can reach 8.2 × 10-12 erg s-1 cm2 (2-6 keV), 4.21 × 10-11 erg s-1 …
In the Trenches of the Solar-Stellar Connection. VII. Wilson-Bappu 2022
Ayres, Thomas
The Wilson-Bappu effect (WBE) is a remarkable correlation between the width of the chromospheric emission core of the Ca II 3934 Å K line and stellar absolute visual magnitude over an astonishing range, from diminutive red dwarfs to bloated yellow supergiants. The WBE signifies a deep connection between the nonclassical, mechanically heated chromo…
PEARLS: Near-infrared Photometry in the JWST North Ecliptic Pole Time Domain Field
Grogin, Norman A.; Koekemoer, Anton M.; Smail, Ian +23 more
We present near-infrared (NIR) ground-based Y, J, H, and K imaging obtained in the James Webb Space Telescope (JWST) North Ecliptic Pole Time Domain Field (NEP TDF) using the MMT-Magellan Infrared Imager and Spectrometer on the MMT. These new observations cover a field of approximately 230 arcmin2 in Y, H, and K, and 313 arcmin2
WISE Green Objects (WGOs): The Massive Star Candidates in the Whole Galactic Plane (∣b∣ < 2°)
Yuan, Jing-Hua; Zhang, Guo-Yin; Zhang, Chang +1 more
Massive young stellar objects (MYSOs) play a crucial role in star formation. Given that MYSOs were previously identified based on the extended structure and the observational data for them is limited, screening the Wide-field Infrared Survey Explorer (WISE) objects showing green features (for the common coding of the 4.6 µm band as the green…
New SB1s with Spectroscopic Orbits from LAMOST-LRS
Wang, Xiaoli; Fu, Yanning; Yuan, Ye +2 more
The LAMOST Low-Resolution Spectroscopic (LAMOST-LRS) Survey provides radial velocities of 10 million stars. These observations can be used to identify new single-lined spectroscopic binaries (SB1s) with their preliminary spectroscopic orbits. First, we perform a statistical χ 2 test on a subsample of LAMOST-LRS stars with velocity obser…
The Spitzer-HETDEX Exploratory Large-Area Survey. IV. Model-based Multiwavelength Photometric Catalog
Papovich, Casey; Finkelstein, Steven L.; Chworowsky, Katherine +11 more
We present a 0.3-4.5 µm 16-band photometric catalog for the Spitzer/HETDEX Exploratory Large-Area (SHELA) survey. SHELA covers an ~27 deg2 field within the footprint of the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). Here we present new DECam imaging and an rizK s band-selected catalog of four million sour…
A Data-constrained Scheme for the Reconstruction of Solar Wind Parameters in the Inner Heliosphere
Feng, Xueshang; Zhang, Man; Liu, Xiaojing +1 more
With the development of our industrial society, the reconstruction of solar wind parameters in the inner heliosphere becomes very important to understanding the interplanetary propagation of various types of space weather disturbance. However, the situ observations of solar wind parameters are only applicable to several points where spacecraft are…
Homogenizing SOHO/EIT and SDO/AIA 171 Å Images: A Deep-learning Approach
Chatterjee, Subhamoy; Dayeh, Maher A.; Bain, Hazel M. +2 more
Extreme-ultraviolet (EUV) images of the Sun are becoming an integral part of space weather prediction tasks. However, having different surveys requires the development of instrument-specific prediction algorithms. As an alternative, it is possible to combine multiple surveys to create a homogeneous data set. In this study, we utilize the temporal …
Firefly: A Browser-based Interactive 3D Data Visualization Tool for Millions of Data Points
Geller, Aaron M.; Gurvich, Alexander B.
We present Firefly, a new browser-based interactive tool for visualizing 3D particle data sets. On a typical personal computer, Firefly can simultaneously render and enable real-time interactions with ≳10 million particles, and can interactively explore data sets with billions of particles using the included custom-built octree render engine. Once…
The Nature of Blue Stars with Mid-infrared Excesses in the Large Magellanic Cloud
Chu, You-Hua; Gruendl, Robert A.; Ishioka, Ryoko +3 more
We present low-resolution optical spectra and classifications of 92 blue objects with mid-infrared excesses in the Large Magellanic Cloud. The majority of these objects were selected with the criteria of U - B < 0 and V < 17 from the potential young stellar object (YSO) candidates in Gruendl & Chu (GC09), which were identified based on S…