Observations of M31 were obtained using the 0.8-m telescope at Wendelstein, Germany and the 1.2-m telescope at Calar Alto, Spain, over three observing seasons...
The pulsating DAV white dwarf G185-32 was observed with the Whole Earth Telescope in 1992, during XCov8. We briefly report on the weighted Fourier transform of...
WFPC2 Multi-color Photometry of A- and B-type Supergiants in M31 and M33 for Application to the Wind-momentum Luminosity Relation
We report the first results of a Hubble Space Telescope (HST) program which performed WFPC2 multi-color imaging of a sample of A- and B-type supergiant stars in...
What Are M31 Disk Planetary Nebulae Trying to Tell Us?
Over the past eight years we have observed optical spectra of planetary nebulae (PNe) in the disk of M31 using DIS on the 3.5-m ARC telescope at Apache Point...
What Are the Goals of Popularising Astronomy for Scientists and Society?
This project addresses the reasons that may motivate efforts to popularize astronomy. Data relevant to this research question were collected by means of focus...
What Can the Radial Surface Brightness Profiles of Galaxy Discs Tell Us About Their Evolution?
Deriving the azimuthally averaged radial surface brightness profile of a galaxy is a schematic way of presenting the light and then the mass structure of disc...
What can we learn from constraining Extreme-Emission Line Galaxies models with large samples of local analogs?
Extreme Emission Line Galaxies (EELGs) are characterized by their compact sizes and very high equivalent widths of certain optical emission lines (e.g. EW([OIII...