Detection of Chromatic Microlensing in Q 2237 + 0305 A
We present narrowband images of the gravitational lens system Q 2237 + 0305 made with the Nordic Optical Telescope in eight different filters covering the...
Detection of Collimated Bipolar Outflows in the Planetary Nebula NGC 6572 Shaping Its Nebular Shell
Highly collimated bipolar outflows have been detected in the planetary nebula NGC 6572 via ground-based optical imagery and high-resolution long-slit...
Detection of Flare-induced Plasma Flows in the Corona of EV Lac with X-Ray Spectroscopy
Stellar flares are characterized by sudden enhancement of electromagnetic radiation from the atmospheres of stars. Compared to their solar counterparts, our...
Detection of Gravitational Redshift in Open Cluster Nondegenerate Stars
A key observational prediction of Einstein's Equivalence Principle is that light undergoes redshift when it escapes from a gravitational field. Although...
Detection of Ionized Calcium in the Atmosphere of the Ultra-hot Jupiter KELT-9b
With a dayside temperature in excess of 4500 K, comparable to a mid-K-type star, KELT-9b is the hottest planet known. Its extreme temperature makes KELT-9b a...
Detection of Multiple Phase Space Overdensities of GSE Stars by Orbit Integration
In N-body simulations, nearly radial mergers can form shell-like overdensities in the sky position and phase space (r - v r ) due to the combination of...
Detection of Polarization from the E4Π-A4Π System of FeH in Sunspot Spectra
Here we report the first detection of polarization signals induced by the Zeeman effect in spectral lines of the E4Π-A4Π system of FeH located around 1.6 μm...
Detection of Solar-like Oscillations, Observational Constraints, and Stellar Models for θ Cyg, the Brightest Star Observed By the Kepler Mission
θ Cygni is an F3 spectral type magnitude V = 4.48 main-sequence star that was the brightest star observed by the original Kepler spacecraft mission. Short...
Detection of the 2175 Å Extinction Feature at z = 0.83
We determine the extinction curve in the zl=0.83 lens galaxy of the gravitational lens SBS 0909+532 from the wavelength dependence of the flux ratio between the...