272 citations
- G. Pietrzyński3 profiles10 · h 66
- W. Gieren2 profiles8 · h 48
- A. Udalski2 profiles6 · h 72
- D. Minniti2 profiles5 · h 64
- D. Geisler2 profiles4 · h 55
- Fabio Bresolin4
- I. Soszyński2 profiles4 · h 51
- Ł. Wyrzykowski2 profiles4 · h 58
- R. E. Mennickent4
- Rolf‐Peter Kudritzki4
- T. Richtler2 profiles4 · h 31
- M. Hilker2 profiles3 · h 52
- University of WarsawPL9 papers
- Pontificia Universidad Católica de ChileCL7 papers
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- University of FloridaUS5 papers
- Center for Astrophysics Harvard & SmithsonianUS4 papers
- Cerro Tololo Inter-American ObservatoryCL4 papers
- European Southern ObservatoryCL4 papers
- National Institute for AstrophysicsIT4 papers
- Pontificia Universidad Católica de ValparaísoCL4 papers
- Case Western Reserve UniversityUS3 papers
- Centre National de la Recherche ScientifiqueFR3 papers
- École Normale Supérieure de LyonFR3 papers
10 papers · 1 filter
The Stellar Populations of M33's Outer Regions III: Star Formation History
Michael K. Barker, Ata Sarajedini, Doug Geisler +2
We present a detailed analysis of the star formation history (SFH) of three fields in M33 located ~ 4 - 6 visual scale lengths from its nucleus. These fields were imaged with the A…
The Stellar Populations of M33's Outer Regions II: Deep ACS Imaging
Michael K. Barker, Ata Sarajedini, Doug Geisler +2
Studying the stellar populations in the outskirts of spiral galaxies can provide important constraints on their structure, formation, and evolution. To that end, we present VI phot…
Medium resolution spectroscopy in Omega Centauri: abundances of 400 subgiant and turn-off region
Andrea Kayser, Michael Hilker, Tom Richtler +1
Medium resolution spectra of more than 400 subgiant and turn-off region stars in Omega Centauri were analysed. The observations were performed at the VLT/Paranal with FORS2/MXU. In…
The Araucaria Project. The Distance to the Sculptor Group Galaxy NGC 55 from a Newly Discovered Abundant Cepheid Population
G. Pietrzynski, W. Gieren, I. Soszynski +10
We have detected, for the first time, Cepheid variables in the Sculptor Group SB(s)m galaxy NGC 55. From wide-field images obtained in the optical V and I bands during 77 nights in…
A note on a non-linear Krein-Rutman theorem
Rajesh Mahadevan
In this note we will present an extension of the Krein-Rutman theorem for an abstract nonlinear, compact, positively 1-homogeneous, monotone non-decreasing operators on a Banach sp…
3D Studies of Neutral and Ionised Gas and Stars in Seyfert and Inactive Galaxies
C. G. Mundell, G. Dumas, E. Schinnerer +8
We are conducting the first systematic 3D spectroscopic imaging survey to quantify the properties of the atomic gas (HI) in a distance-limited sample of 28 Seyfert galaxies and a s…