Browsing by Title
Now showing items 20808-20827 of 24193
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Standing on the Outside
(1981) -
Standing on the shoulders of giants : New mass and distance estimates for Betelgeuse through combined evolutionary, asteroseismic, and hydrodynamical simulations with MESA
(2020-10-13)We conduct a rigorous examination of the nearby red supergiant Betelgeuse by drawing on the synthesis of new observational data and three different modeling techniques. Our observational results include the release of new, ... -
Star and globular cluster formation in mergers
(The International Astronomical Union, 1996) -
Star and Stellar Cluster Formation: ALMA-SKA Synergies
(2015-04)Over the next decade, observations conducted with ALMA and the SKA will reveal the process of mass assembly and accretion onto young stars and will be revolutionary for studies of star formation. Here we summarise the ... -
Star cluster formation and star formation: the role of environment and star-formation efficiencies
(2009)By analyzing global starburst properties in various kinds of starburst and post-starburst galaxies and relating them to the properties of the star cluster populations they form, I explore the conditions for the formation ... -
Star Cluster Formation in Clouds with Externally Driven Turbulence
(2022-11-01)Star clusters are known to be formed in turbulent molecular clouds. How turbulence is driven in molecular clouds and what effect this has on star formation is still unclear. We compare a simulation setup with turbulent ... -
Star clusters near and far; tracing star formation across cosmic time
(2020-06-08)Star clusters are fundamental units of stellar feedback and unique tracers of their host galactic properties. In this review, we will first focus on their constituents, i.e.\ detailed insight into their stellar populations ... -
Star formation and agn activity in interacting galaxies : A near-UV perspective
(2014-01-21)We study nearby galaxies in close pairs to study the key factors affecting star formation and active galactic nuclei (AGN) activity triggered during galaxy interactions. Close pairs are selected from the Sloan Digital Sky ... -
Star Formation and AGN Feedback in the Local Universe: Combining LOFAR and MaNGA
(2022-09-21)The effect of active galactic nuclei (AGN) on their host galaxies – in particular their levels of star formation – remains one of the key outstanding questions of galaxy evolution. Successful cosmological models of galaxy ... -
Star formation and nuclear activity in close pairs of early-type galaxies
(2009-11-01)We extract from the Sloan Digital Sky Survey a sample of 347 systems involving early-type galaxies separated by less than 30 kpc, in projection, and 500 km s−1 in radial velocity. These close pairs are likely progenitors ... -
Star Formation Efficiencies and Star Cluster Formation
(Springer Nature, 2005)Starbursts produce large numbers of Young Star Clusters (YSCs). Multi-color photometry in combination with a dedicated SED analysis tool allows to derive ages, metallicities, EB−V, and masses including 1 uncertainties for ... -
The star formation efficiency in nearby galaxies : measuring where gas forms stars effectively
(2008)We measure the star formation efficiency (SFE), the star formation rate (SFR) per unit of gas, in 23 nearby galaxies and compare it with expectations from proposed star formation laws and thresholds.We use Hi maps from The ... -
Star formation histories in H II galaxies. I. Optical and radio observations
(1997)In this paper we report CCD photometry in broad band B, R, and I colors, as well as in the H , for a sample of eight Hii galaxies with strong radio emission. In addition, we present new radio continuum observations in the ... -
The star formation histories of early-type galaxies : Insights from the rest-frame ultraviolet
(2008-01-30)Our current understanding of the star formation histories of early-type galaxies is reviewed, in the context of recent observational studies of their ultraviolet (UV) properties. Combination of UV and optical spectro-photometric ...