Small Scale Structure of the ISM Toward NGC 2264

Details Small Scale Structure of the ISM Toward NGC 2264 Small Scale Structure of the ISM Toward NGC 2264

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.9711f&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #97.11; Bulletin of the American Astronomical Society, Vol. 33, p.1451

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The spatial structure of the Galactic interstellar medium (ISM) is affected by many processes including bulk turbulence, winds from massive stars, and supernovae. But it has only been in the last few years that structure on scales ~1 parsec and less have been recognized. Most studies have been done by observing spatial or temporal changes in optical and radio spectra. For example, ground-based time series observations of Na I toward δ Ori A spanning several decades (Price, Crawford, & Barlow 2000, MNRAS 312, L43) as well as observations of Na I toward stars in globular cluster M92 (Andrews, Meyer, & Lauroesch, 2001, ApJ 552, L73) reveal structure on scales of 102 to 104 AU, respectively. Frail et al. (1991, ApJ 382, 168) inferred variation in the H I column density over tens of AU from 21 cm observations of a pulsar moving through the ISM. We report on observations of four stars in the open cluster NGC 2264, covering 910-1187Å, using the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. These are among the first UV studies of the small scale structure of the ISM. All target stars are classified as B2V or B3V, and have similar reddening characteristics, 0.05 <= EB-V <= 0.08. At a cluster distance of 750 pc the star-to-star separations range from 1.4 to 3.6 pc. We discuss variations in column densities of several species along these sight lines, including H2 and Fe II. This work is supported by NASA contract NAS5-32985 to the Johns Hopkins University.

Affiliated with

Also associated with

No associations

Rating

Small Scale Structure of the ISM Toward NGC 2264 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Small Scale Structure of the ISM Toward NGC 2264, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Small Scale Structure of the ISM Toward NGC 2264 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1235208