We present a multi-wavelength study of the gas dynamics and star formation in the grand-design spiral galaxy NGC 5248, illustrating how coupled dynamical mechanisms can generate spiral structures from tens of kpc to hundreds of pc, drive disk evolution, and fuel star formation on progressively smaller scales. Although to date NGC 5248 has been

High-resolution observations suggest that quiescent solar prominences are made of small-scale fibrils stacked one after another in both the vertical and horizontal directions. These fibrils are interpreted as the cool, highermost part of much larger coronal loops which are rooted in the solar photosphere. On the other hand, there is some evidence

The formation of quasar broad-line region (BLR) clouds via thermal instability in the presence of Alfvén heating has been discussed by Gonçalves, Jatenco-Pereira & Opher. In particular, these studies showed the relevance of Alfvén heating in establishing the stability of BLR clouds in the intercloud medium. The present paper shows the results of

As the result of an editorial oversight, the following two works were misattributed in the references:Schweizer, F. 1998, in Galaxies: Interactions and Induced Star Formation, ed. D. Friedli, L. Martinet, & D. Pfenniger (Berlin: Springer), 105Sparke, L. S. 1996, ApJ, 473, 810The publisher regrets the error.

We will present analysis of the diffuse emission from the nucleus of M31 using a 40 ks Chandra ACIS-S observation. The observation was taken by Chandra on 5 October, 2001. This is a continuation of our work performed on a 5 ks observation with the Chandra ACIS-I detector, presented as a poster paper at the 2001 ASP conference. With this observation

We present the results from an X-ray and optical survey of a sample of radio jets in AGN with Chandra and HST. We focus on the first six sources observed at X-rays, in four of which a bright X-ray jet was detected for the first time. In three out of four cases optical emission from the jet is also detected in the HST images. We compare the X-ray