159 research outputs found
Near-infrared adaptive optics imaging of infrared luminous galaxies: the brightest cluster magnitude - star formation rate relation
We have established a relation between the brightest super star cluster
magnitude in a galaxy and the host star formation rate (SFR) for the first time
in the near infrared (NIR). The data come from a statistical sample of ~ 40
luminous IR galaxies (LIRGs) and starbursts utilizing K-band adaptive optics
imaging. While expanding the observed relation to longer wavelengths, less
affected by extinction effects, it also pushes to higher SFRs. The relation we
find, M_K ~ - 2.6 log SFR, is similar to that derived previously in the optical
and at lower SFRs. It does not, however, fit the optical relation with a single
optical to NIR color conversion, suggesting systematic extinction and/or age
effects. While the relation is broadly consistent with a size-of-sample
explanation, we argue physical reasons for the relation are likely as well. In
particular, the scatter in the relation is smaller than expected from pure
random sampling strongly suggesting physical constraints. We also derive a
quantifiable relation tying together cluster-internal effects and host SFR
properties to possibly explain the observed brightest SSC magnitude vs. SFR
dependency.Comment: 6 pages, 4 figures, accepted for publication in ApJ Letter
Emerging Role of Enterprise System in Radical Organizational Change
In this paper we analyze the role of Enterprise Systems (ES) in shaping a company’s transformation process by conducting an in-depth case study in a large European high-tech company. Although there are previous studies concerning organizational transformation and ES implementation process, the role of ES as an instrument for de-institutionalization is not well understood. By drawing on the framework of neo-institutional theory we seek to understand how ES facilitates discarding of the old ways of doing things and the simultaneous forming of the new institutional arrangements. This paper seeks to provide valuable insights into the de-institutionalization process and the role of ES in a company’s re-organization. The findings show how ES in use serves as an agent and a platform for de-institutionalization and later as a powerful force in forming the new institutional arrangement
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