We have compiled a database of Chandra-HRC snapshot images covering most of the M31 disk. The database consists of 5 HRC fields. All fields were observed at 16...
We present results from a Chandra survey of 11 nearby, face-on spiral galaxies. 24 observations totaling 900 ks of new and archival Chandra data reveal more...
A Chandra/ACIS observation of the transient M31 ULX XMMU J004243.6+412519
We report on our ~4 ks Chandra ACIS observation of XMMU J004243.6+412519, an X-ray transient first reported by Henze et al. (2012a, Atel #3890) after its...
A chromospheric dark-cored fibril in Ca II IR spectra
We investigate the thermodynamical and magnetic properties of a ``dark-cored" fibril seen in the chromospheric Ca II IR line at 854.2 nm to determine the...
We present a high-resolution kinematical study of the ionized gas in the circumnuclear region of NGC 4314. Our spectra reveal the presence of a central...
A compact light-weighted and multi-purpose calibration unit for LINC-NIRVANA
Laboratory and on-sky experience suggests that the integration of big astronomical instruments, specially of a complex interferometric system, is a challenging...
A Compact Radio Source Coincident with the Ultraluminous X-Ray Source IC 342 X-1
We recently discovered an unresolved radio source coincident with the ultraluminous X-ray source (ULX) IC 342 X-1. The radio emission and hard X-ray spectrum of...