We present a detailed spectroscopic study of the optical counterpart of the neutron star X-ray transient Aquila X-1 during its 2011, 2013 and 2016 outbursts. We...

We present clear evidence for the motion of the companion star in the low-mass X-ray binary (LMXB) X1822-371. We detect N III λ4640 emission moving in antiphase...

A primary objective of exoplanet atmosphere characterization is to learn about planet formation and evolution, however, this is challenged by degeneracies. To...

Hot Jupiters present a unique opportunity for measuring how planet formation history shapes present-day atmospheric composition. However, due to the myriad...

Inspecting all 1224 edge-on disk galaxies larger than 2arcmin in the RC3 on Digitized Sky Survey (DSS) images (Lütticke et al. cite{lue2000a}) we have found...

Since its discovery in 2008, the Andromeda galaxy nova M31N 2008-12a has been observed in eruption every single year. This unprecedented frequency indicates an...

The faint extended broad (>=1000 km s-1) optical emission lines associated with giant H II regions are shown here to be produced in a shell of ISM material...

Breaks in the radial luminosity profiles of galaxies have until now been mostly studied averaged over disks. Here, we study separately breaks in thin and thick...

We present the first results in our study of the bremsstrahlung emission of photons accompanying the spontaneous fission of the 252Cf nucleus. We compare...