... 000 , 000 ­ 000 (0000) Printed 16 June 2011 A (MN L TEX style file v2.2) New short p eriod stellar pulsators at large Galactocentric distances Gavin Ramsay1, Ralf Napiwotzki2, Thomas Barclay1,3, Pasi Hakala4, Stephen Potter5, Mark Cropper3 ... Most stars are at least 1 kpc from the Galactic plane, with three being more than 10 kpc. ... The colours of the pulsators and the spectral fits to those stars for which we have spectra indicate that they are either SX Phe or Scuti stars. ...

... This image, and many other fascinating views from space, can be found at http://earth.jsc.nasa.gov. ... There is a real story besides what's in the news. ... Our mission is too important. ... In their work, HHFO team members explore many topics, such as: x Where should the foot restraints be in the International Space Station to ensure easy access to work stations? x Will an astronaut's spacesuit still fit in microgravity? x How can the shuttle's computer and warning systems be made more efficient? ...

... A molecular cloud in the interstellar medium may be considered as spherical and of uniform density and fixed temperature as it undergoes expansion or contraction. Assume the opacity of material in the molecular cloud has a value . ... How will this affect cloud fragmentation? (e) In the stages of collapse of a gas cloud before it becomes optically thick, its temperature is determined by the balance between compressional heating and radiation of energy from the cloud. ...

... Printed in U.S.A. ( YOUNG STELLAR NUCLEI IN THE LENTICULAR GALAXIES. ... We пnd a rather young stellar nucleus, with a mean population age of 1.5 ^ 0.5 Gyr, which is more metal­rich than the bulge at RB 1 kpc by an order of magnitude. ... But the center of a galaxy is a special place ; the stellar nucleus may have a particular evolution that di+ers from the evolution of the whole galaxy. ... We have detected intermediate­age stellar popu­ lations in the centers of these galaxies. ...