MWC 656 is the first known Be/black hole (BH) binary system. Be/BH binaries are important in the context of binary system evolution and sources of detectable...
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PublicaciónThe First Simultaneous X-Ray/Radio Detection of the First Be/BH System MWC 656
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PublicaciónThe FR II Broad-Line Seyfert 1 Galaxy: PKS J1037-2705
In this article we demonstrate that PKS J1037-2705 has a weak accretion flow luminosity, well below the Seyfert 1/QSO dividing line, weak broad emission lines...
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PublicaciónThe Halo Black Hole X-Ray Transient XTE J1118+480
Optical spectra were obtained of the optical counterpart of the high-latitude (b~=62deg) soft X-ray transient XTE J1118+480 near its quiescent state (R~=18.3)...
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PublicaciónThe Host Galaxies of Radio-loud Active Galactic Nuclei: The Black Hole-Galaxy Connection
We have studied the host galaxies of a sample of radio-loud active galactic nuclei (AGNs) spanning more than 4 decades in the energy output of the nucleus. The...
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PublicaciónThe Impact of the Mass Spectrum of Lenses in Quasar Microlensing Studies. Constraints on a Mixed Population of Primordial Black Holes and Stars
We show that quasar microlensing magnification statistics induced by a population of point microlenses distributed according to a mass spectrum can be very well...
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PublicaciónThe jet-powered optical nebula of Cygnus X-1
We present Hα and [OIII] (5007 Å) images of the nebula powered by the jet of the black hole candidate and microquasar Cygnus X-1, observed with the 2.5-m Isaac...
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PublicaciónThe mass of the black hole in the low-inclination LMXB transient system GRO J0422+32 (=Nova Persei 1992)
We present the first infrared light curve of GRO J0422+32, and use it along with R-band data and published I- and Cousins R_c-band data to constrain the...
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PublicaciónThe mass ratio of Nova MUSCAE 1991
We report intermediate resolution H alpha spectroscopy of the black hole candidate Nova Muscae 1991 during quiescence. We classify the companion star as a K3...
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PublicaciónThe Massive Neutron Star or Low-Mass Black Hole in 2S 0921-630
We report on the optical spectroscopy of the eclipsing halo low-mass X-ray binary 2S 0921-630, which reveals the absorption-line radial velocity curve of the K0...