5 papers
The Low End of the Supermassive Black Hole Mass Function: Constraining the Mass of a Nuclear Black Hole in NGC 205 via Stellar Kinematics
Monica Valluri, Laura Ferrarese, David Merritt +1
Hubble Space Telescope (HST) images and spectra of the nucleated dwarf elliptical galaxy NGC 205 are combined with 3-integral axisymmetric dynamical models to constrain the mass (M…
The Heavy Element Enrichment of Lyman alpha Clouds in the Virgo Supercluster
T. M. Tripp, E. B. Jenkins, G. M. Williger +11
Using high S/N STIS echelle spectra (FWHM=7 km/s) of 3C 273, we constrain the metallicities of two Lya clouds in the vicinity of the Virgo cluster. We detect C II, Si II, and Si II…
No Supermassive Black Hole in M33?
David Merritt, Laura Ferrarese, Charles L. Joseph
We analyze optical long-slit spectroscopy of the nucleus of M33 obtained from the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope. Rather than the steep rise…
The Nuclear Dynamics of M32. I. Data and Stellar Kinematics
C. Joseph, D. Merritt, R. Olling +3
We have obtained optical long-slit spectroscopy of the nucleus of M32 using the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope. The stellar rotation velocit…
UV Absorption Lines from High-Velocity Gas in the Vela Supernova Remnant: New insights from STIS Echelle Observations of HD72089
E. B. Jenkins, T. M. Tripp, E. L. Fitzpatrick +12
The star HD72089 is located behind the Vela supernova remnant and shows a complex array of high and low velocity interstellar absorption features arising from shocked clouds. A spe…