The peculiar nebula Simeis 57

The peculiar nebula Simeis 57 I . Ionized Gas and Dust Extinction

We present high resolution radio continuum maps of the Galactic nebula Simeis 57 (= HS 191 = G 80.3+4.7) made at the Westerbork Synthesis Radio Telescope and the Dominion Radio Astrophysical Observatory at frequencies of 609, 1412 and 1420 MHz. At optical and at radio wavelengths, the nebula has a peculiar " S " shape, crossed by long, thin and straight filaments. The radio maps, combined with ...

A peculiar planetary nebula candidate in a globular cluster in the Fornax dwarf spheroidal galaxy

Context. Until now, only one planetary nebula (PN) has been known in the Fornax dwarf spheroidal galaxy. Aims. The discovery of a second PN candidate, associated with one of the 5 globular clusters in the Fornax dwarf, is reported. Methods. Spectra of the globular cluster H5, obtained with the UVES echelle spectrograph on the ESO Very Large Telescope, show [O ] line emission at a radial velo...

The Peculiar Economics ofGlobal

Peculiar Galaxies

The NEBULA Future Internet Architecture

The NEBULA Future Internet Architecture (FIA) project is focused on a future network that enables the vision of cloud computing [8,12] to be realized. With computation and storage moving to data centers, networking to these data centers must be several orders of magnitude more resilient for some applications to trust cloud computing and enable their move to the cloud. An example application we ...