The 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...
The trans-Neptunian object size distribution at small sizes
Aims: The aim of this work is to estimate the size distribution of small Trans-Neptunian objects. Methods: We simulate the irradiation and collisional processes...
The transfer of polarized radiation in resonance lines with partial frequency redistribution, J-state interference, and arbitrary magnetic fields. A radiative transfer code and useful approximations
Aims: We present the theoretical framework and numerical methods we have implemented to solve the problem of the generation and transfer of polarized radiation...
The transfer of resonance line polarization with partial frequency redistribution and J-state interference. Theoretical approach and numerical methods
The linear polarization signals produced by scattering processes in strong resonance lines are rich in information on the magnetic and thermal structure of the...
The 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...
The Transiting Exoplanet Community Early Release Science Program for JWST
The James Webb Space Telescope (JWST) presents the opportunity to transform our understanding of planets and the origins of life by revealing the atmospheric...
The Transiting Multi-planet System HD 3167: A 5.7 M ⊕ Super-Earth and an 8.3 M ⊕ Mini-Neptune
HD 3167 is a bright (V = 8.9 mag) K0 V star observed by NASA’s K2 space mission during its Campaign 8. It has recently been found to host two small transiting...
The Transiting Multi-planet System HD15337: Two Nearly Equal-mass Planets Straddling the Radius Gap
We report the discovery of a super-Earth and a sub-Neptune transiting the star HD 15337 (TOI-402, TIC 120896927), a bright (V = 9) K1 dwarf observed by the...
The Transition from Outburst to Low Level Activity in the Low-Mass X-Ray Binary SAX J1747.0-2853
SAX J1747.0-2853 is an X-ray transient which exhibited several outbursts between 1998 and 2001 and most probably in 1976. The outburst of 2000 was the longest...