167 research outputs found
Crowded-field photometry from HST-imaging
We present a thorough investigation of stellar photometry based on HST
imaging of crowded fields at 85 and 10 arcsec from the centre of the
high-surface brightness elliptical M32. The Principal Investigators of the
present archive data have elsewhere presented an impressive colour-magnitude
diagram of the field at 85 arcsec. Based on the same data we enlarge on their
photometric analysis and supplement with error estimators that more clearly
show the implications of severe image crowding on the stellar photometry. We
show that the faintest stars (I>25.0, V>26.0) are found too bright by several
tens of a magnitude. For the field at 10 arcsec we conclude that it is not
possible to obtain reliable stellar photometry, standard deviations being
larger than 0.4 mag. Artificial-star experiments show that only very few of the
brightest stars of the luminosity function can be expected to represent single
objects, the majority being either spurious or not as bright as measured.Comment: 7 pages, to be published in Astronomy and Astrophysic
Novel, Travel-Writing and Nation : Studies in Selma LagerloÌf and Hans Christian Andersen
The overarching focus of the portfolio of publications I have submitted for the PhD
by Research Publications is the treatment of place - in particular the mapping and
problematisation of nation space - in Selma Lagerlofs and Hans Christian
Andersen's novel- and travel-writing. Through a consideration of selected texts it is
argued that manifestations of mobility, modernity and hybridity contribute centrally
to the articulation of place in the works of both writers. It is further argued that the
majority of the texts themselves display hybrid features, challenging the boundary
between 'fictional' novel-writing and 'factual' travel-writing and combining a
commitment to the 'real' with a recurring interest in the imagined.In all, the submitted publications on Lagerlof and Andersen may be seen as
contributions to the reassessment of two Scandinavian cultural figures of 'world
literature' status, highlighting proto-modernist aspects of their oeuvre as well as
some reductive patterns in their reception history
- âŠ