A Caltech Library Service

Diffuse interstellar band formation in dense clouds

Snow, Theodore P., Jr. and Cohen, Judith G. (1975) Diffuse interstellar band formation in dense clouds. Astrophysics and Space Science, 34 (1). pp. 33-38. ISSN 0004-640X.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Measurements of the strengths of the diffuse interstellar bands at 4430, 5780 and 5797 Å show that the bands tend to be week with respect to extinction in dense interstellar clouds. Data on 10 stars in the ϱ Ophiuchi cloud complex show further that the diffuse band-producing efficiency of the grains decreases systematically with increasing grain size. It is concluded that the diffuse bands are not formed in the mantles which accrete on the grains in interstellar clouds, but that they could be produced in the cores of grains or in some molecular species.

Item Type:Article
Related URLs:
URLURL TypeDescription
Cohen, Judith G.0000-0002-8039-4673
Additional Information:© Kluwer Academic Publishers • Provided by the NASA Astrophysics Data System. (Received 14 October, 1974) Paper presented at the Symposium on Solid State Astrophysics, held at the University College, Cardiff, Wales, between 9-12 July, 1974. We acknowledge with pleasure the kind assistance of Dr S. E. Strom, who provided diffuse band data on 5 stars, and Dr G. Wallerstein, who provided plates of some of the (ρ Oph cloud stars. One of us (T.P.S.) carried out a portion of this study while he was a Predoctoral Research Associate at the University of Washington, where this work was supported in part by the Graduate School Research Fund of the University of Washington, and in part by National Science Foundation grant GP28881. The work done at Princeton was supported by National Aeronautics and Space Administration contract NAS5-1810.
Funding AgencyGrant Number
University of WashingtonUNSPECIFIED
Subject Keywords:Grain Size; Molecular Species; Band Formation; Dense Cloud; Interstellar Cloud
Issue or Number:1
Record Number:CaltechAUTHORS:20190529-161902392
Persistent URL:
Official Citation:Snow, T.P. & Cohen, J.G. Astrophys Space Sci (1975) 34: 33.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95900
Deposited By: George Porter
Deposited On:31 May 2019 15:18
Last Modified:03 Oct 2019 21:17

Repository Staff Only: item control page