The three-dimensional structure of an active region filament is studied using nonlinear force-free field extrapolations based on simultaneous observations at a...
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PublicationThe Three-dimensional Structure of an Active Region Filament as Extrapolated from Photospheric and Chromospheric Observations
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PublicationThe Tilt of the Fundamental Plane: Three-Quarters Structural Nonhomology, One-Quarter Stellar Population
The variation of the mass-to-light M/L ratios of early-type galaxies as a function of their luminosities L is investigated. It is shown that the tilt β=0.27 (in...
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PublicationThe Trace of the CNO Cycle in the Ring Nebula NGC 6888
We present new results on the chemical composition of the Galactic ring nebula NGC 6888 surrounding the WN6(h) star WR136. The data are based on deep...
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PublicationThe Transfer of Resonance Line Polarization with Partial Frequency Redistribution in the General Hanle–Zeeman Regime
The spectral line polarization encodes a wealth of information about the thermal and magnetic properties of the solar atmosphere. Modeling the Stokes profiles...
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PublicationThe Type II-plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor
We present extensive optical photometric and spectroscopic observations, from 4 to 482 days after explosion, of the Type II-plateau (II-P) supernova (SN)...
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PublicationThe Typical Massive Quiescent Galaxy at z ∼ 3 is a Post-starburst
We have obtained spectroscopic confirmation with Hubble Space Telescope WFC3/G141 of a first sizeable sample of nine quiescent galaxies at 2.4 < z < 3.3. Their...
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PublicationThe Ultraviolet Spectrum and Physical Properties of the Mass Donor Star in HD 226868 = Cygnus X-1
We present an examination of high-resolution, ultraviolet (UV) spectroscopy from Hubble Space Telescope of the photospheric spectrum of the O-supergiant in the...
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PublicationThe Undiscovered Ultradiffuse Galaxies of the Local Group
Ultradiffuse galaxies (UDGs) are attractive candidates to probe cosmological models and test theories of galaxy formation at low masses; however, they are...
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PublicationThe Unrelaxed Dynamical Structure of the Galaxy Cluster Abell 85
For the first time, we explore the dynamics of the central region of a galaxy cluster within r 500 ∼ 600 h‑1 kpc from its center by combining optical and X-ray...