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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…
A high-resolution spectroscopic search for multiple populations in the 2 Gyr old cluster NGC 1846
Da Costa, G. S.; Mackey, A. D.; Nordlander, T. +1 more
We present detailed C, O, Na, Mg, Si, Ca, Ti, V, Fe, Zr, Ba, and Eu abundance measurements for 20 red giant branch (RGB) stars in the Large Magellanic Cloud (LMC) star cluster NGC 1846 ([Fe/H] = -0.59). This cluster is 1.95 Gyr old and lies just below the supposed lower age limit (2 Gyr) for the presence of multiple populations in massive star clu…
A Search for Exoplanets around Northern Circumpolar Stars VII. Detection of Planetary Companion Orbiting the Largest Host Star HD 18438
Lee, Byeong-Cheol; Park, Myeong-Gu; Choi, Yeon-Ho +3 more
We have been conducting a exoplanet search survey using Bohyunsen Observatory Echelle Spectrograph (BOES) for the last 18 years. We present the detection of exoplanet candidate in orbit around HD 18438 from high-precision radial velocity (RV) mesurements. The target was already reported in 2018 (Bang et al. 2018). They conclude that the RV variati…
Combination of MRO SHARAD and deep-learning-based DTM to search for subsurface features in Oxia Planum, Mars
Tao, Yu; Muller, Jan-Peter; Xiong, Siting +3 more
Context. Oxia Planum is a mid-latitude region on Mars that attracts a great amount of interest worldwide. An orbiting radar provides an effective way to probe the Martian subsurface and detect buried layers or geomorphological features. The Shallow radar orbital radar system on board the NASA Mars reconnaissance orbiter transmits pulsed signals to…
Mass Ratio Distribution of Hierarchical Triple Systems from the LAMOST-MRS Survey
Han, Zhanwen; Chen, Xuefei; Li, Jiangdan +3 more
Hierarchical triple-star systems consists of three components organized into an inner binary (M 1, M 2) and a more distant outer tertiary (M 3) star. The LAMOST Medium-Resolution Spectroscopic Survey has offered a great sample for the study of triple-system populations. We used the peak amplitude ratio method to ob…
Investigation into the reflection properties of the neutron star low-mass X-ray binary 4U 1636-53
Wang, H. G.; García, F.; Zhang, G. B. +1 more
We present the spectroscopy of the neutron star low-mass X-ray binary 4U 1636-53 using six simultaneous XMM-Newton and Rossi X-ray Timing Explorer observations. We applied different self-consistent reflection models to explore the features when the disk is illuminated by either the corona or the neutron star surface. We found that the spectra coul…
RZ Piscium Hosts a Compact and Highly Perturbed Debris Disk
Hughes, A. Meredith; Liu, Hauyu Baobab; Rieke, G. H. +6 more
RZ Piscium (RZ Psc) is well known in the variable star field because of its numerous irregular optical dips in the past 5 decades, but the nature of the system is heavily debated in the literature. We present multiyear infrared monitoring data from Spitzer and WISE to track the activities of the inner debris production, revealing stochastic infrar…
Infrared view of the multiphase ISM in NGC 253. II. Modelling the ionised and neutral atomic gas
Lebouteiller, Vianney; Ramambason, Lise; Madden, Suzanne C. +9 more
Context. Multi-wavelength studies of galaxies and galactic nuclei allow us to build a relatively more complete picture of the interstellar medium (ISM), especially in the dusty regions of starburst galaxies. An understanding of the physical processes in nearby galaxies can assist in the study of more distant sources at higher redshifts that cannot…
The Environment and Star Formation around the Infrared Bubble N 13
Xu, Ye; Zhou, Dong-Dong; Zhou, Jian-Jun +2 more
Infrared bubbles provide a unique opportunity to study the interactions between massive stars and surrounding material. We conduct a multi-wavelength study on the environment and star formation around an infrared bubble N 13. Three dust clumps and two molecular clumps are identified around N 13, which are all distributed on the layer. Young stella…
Concerning the detection of electromagnetic knot structures in space plasmas using the wave telescope technique
Motschmann, Uwe; Glassmeier, Karl-Heinz; Toepfer, Simon
The wave telescope technique is broadly established in the analysis of spacecraft data and serves as a bridge between local measurements and the global picture of spatial structures. The technique is originally based on plane waves and has been extended to spherical waves, phase-shifted waves and planetary magnetic field representation. The goal o…