NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 11 of 2436
Measurements of the H2(13)CO ortho/para ratio in cold dark molecular clouds
Author and Affiliation:
Minh, Y. C.(Korea Astronomy Observatory, Taejon)
Dickens, J. E.
Irvine, W. M.
McGonagle, D.
Abstract: H2(13)CO has been detected for the first time toward cold dark molecular clouds using the NRAO 12 m telescope. The H2(13)CO ortho/para abundance ratio R for B335, which we report as R approximately 1.7, suggests equilibrium at the local kinetic temperature and appears to be distinctly different from that for both TMC-1 and L134N, where R is close to or higher than the statistical value 3. Since only B335 among the observed positions includes an imbedded IR source, this difference may result from heating of the grain surfaces, providing the energy necessary for desorption of formaldehyde formed on the grains.
Publication Date: Jun 01, 1995
Document ID:
20040090039
(Acquired Sep 07, 2004)
Subject Category: EXOBIOLOGY
Document Type: Journal Article
Publication Information: Astronomy and astrophysics (ISSN 0004-6361); Volume 298; 1; 213-8
Publisher Information: Germany
Contract/Grant/Task Num: NAGW-436
Financial Sponsor: NASA; Washington DC United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTRONOMY; EXTRATERRESTRIAL ENVIRONMENTS; FORMALDEHYDE; GASES; MOLECULAR CLOUDS; CARBON ISOTOPES; EXOBIOLOGY; MODELS; SPECTRUM ANALYSIS
Other Descriptors: ASTRONOMY; EXTRATERRESTRIAL ENVIRONMENT; FORMALDEHYDE/CHEMISTRY; GASES/ANALYSIS; CARBON ISOTOPES; CHEMISTRY; MODELS, THEORETICAL; SPECTRUM ANALYSIS/METHODS; SUPPORT, U.S. GOV'T, NON-P.H.S; SUPPORT, U.S. GOV'T, P.H.S; NASA DISCIPLINE EXOBIOLOGY; NASA DISCIPLINE NUMBER 52-10; NASA PROGRAM EXOBIOLOGY; NON-NASA CENTER
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 23, 2011
Contact Us