Journal: The Astrophysical Journal

  • Publication
    Proper Motions and Orbits of Distant Local Group Dwarf Galaxies from a Combination of Gaia and Hubble Data
    We have determined the proper motions (PMs) of 12 dwarf galaxies in the Local Group (LG), ranging from the outer Milky Way (MW) halo to the edge of the LG. We...
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    Properties of the Dwarf Galaxy Population in Galaxy Clusters
    We present the observational properties of the dwarf galaxy population (Mr>M*r+1) corresponding to one of the largest samples of spectroscopically confirmed...
  • Publication
    Properties of the Umbral Filament Observed in Active Region NOAA 12529
    Recent observations of the solar photosphere revealed the presence of elongated filamentary bright structures inside sunspot umbrae, called umbral filaments...
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    Prospects for Cherenkov Telescope Array Observations of the Young Supernova Remnant RX J1713.7‑3946
    We perform simulations for future Cherenkov Telescope Array (CTA) observations of RX J1713.7‑3946, a young supernova remnant (SNR) and one of the brightest...
  • Publication
    Pseudobulges in the Disk Galaxies NGC 7690 and NGC 4593
    We present Ks-band surface photometry of NGC 7690 (Hubble type Sab) and NGC 4593 (SBb). We find that, in both galaxies, a major part of the ``bulge'' is as flat...
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    PTF1 J082340.04+081936.5: A Hot Subdwarf B Star with a Low-mass White Dwarf Companion in an 87-minute Orbit
    We present the discovery of the hot subdwarf B star (sdB) binary PTF1 J082340.04+081936.5. The system has an orbital period of {P}{orb} = 87.49668(1) minutes (0...
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    Pyroclastic Blowout: Dust Survival in Isolated versus Clustered Supernovae
    Following the current debate on the fate of SN-condensed dust grains, here we explore by means of three-dimensional hydrodynamical simulations the interaction...
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    QSO 2237+0305 VR Light Curves from Gravitational LensES International Time Project Optical Monitoring
    We present VR observations of QSO 2237+0305 conducted by the Gravitational Lensing International Time Project collaboration from 1999 October 1 to 2000 February...
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    QSO+Galaxy Association and Discrepant Redshifts in NEQ3
    Spectroscopy and deep imaging of the group NEQ3 are presented. This system is formed by three compact objects with relative separations of ~2.6" and ~2.8" and a...