Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
arXiv:0705.1752v1[astro-ph]12May2007 MEASUREMENT OF DUST OPTICAL PROPERTIES IN
 

Summary: arXiv:0705.1752v1[astro-ph]12May2007
MEASUREMENT OF DUST OPTICAL PROPERTIES IN
COALSACK
N. V. SUJATHA, JAYANT MURTHY, P. SHALIMA
sujaskm@yahoo.co.in, jmurthy@yahoo.com, shalima.p@gmail.com
Indian Institute of Astrophysics, Koramangala, Bangalore - 560 034, India
and
RICHARD CONN HENRY
henry@jhu.edu
Dept. of Physics and Astronomy
The Johns Hopkins University, Baltimore, MD 21218
ABSTRACT
We have used FUSE and Voyager observations of dust scattered starlight in
the neighborhood of the Coalsack Nebula to derive the optical constants of the
dust grains. The albedo is consistent with a value of 0.28 0.04 and the phase
function asymmetry factor with a value of 0.61 0.07 throughout the spectral
range from 900 1200 A, in agreement with previous determinations as well as
theoretical predictions. We have now observed two regions (Ophiuchus and Coal-
sack) with intense diffuse background radiation and in both cases have found that
the emission is due to light from nearby hot stars scattered by a relatively thin

  

Source: Henry, Richard C.- Department of Physics and Astronomy, Johns Hopkins University

 

Collections: Physics