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 1 of 19737
Upper limits on extreme ultraviolet radiation from nearby main sequence and subgiant stars
Author and Affiliation:
Ayres, T. R.(Joint Institute for Laboratory Astrophysics, Boulder, Colo., United States)
Linsky, J. L.(Joint Institute for Laboratory Astrophysics, National Bureau of Standards, Quantum Physics Div., Boulder)
Margon, B.(California, University, Los Angeles, Calif., United States)
Bowyer, S.(California, University, Berkeley, Calif., United States)
Abstract: Flux upper limits for 44-800 A radiation were measured in a sample of nearby main sequence stars and one subgiant star with the aid of the Apollo-Soyuz grazing incidence telescope. Comparisons of emission measure upper limits with three different methods for predicting coronal properties cannot yet determine which, if any, are valid. Data for Alpha Centauri A and B are consistent with recent HEAO-1 soft X-ray measurements which suggest that the surface flux of coronal emission from the Alpha Cen system is comparable to that of the 'normal' sun.
Publication Date: Nov 01, 1978
Document ID:
19790041476
(Acquired Dec 01, 1995)
Accession Number: 79A25489
Subject Category: ASTRONOMY
Document Type: Journal Article
Publication Information: Astronomy and Astrophysics; p. Nov. 197; 70; 3, No
Publisher Information: Germany
Contract/Grant/Task Num: NAS5-23274; NGL-06-003-057
Financial Sponsor: NASA; United States
Organization Source: Joint Inst. for Lab. Astrophysics; Boulder, CO, United States
National Bureau of Standards; Boulder, CO, United States
California Univ.; Los Angeles, CA, United States
California Univ.; Berkeley, CA, United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: FAR ULTRAVIOLET RADIATION; MAIN SEQUENCE STARS; STELLAR CORONAS; STELLAR RADIATION; X RAY SOURCES; APOLLO SOYUZ TEST PROJECT; GRAZING INCIDENCE; GRAZING INCIDENCE TELESCOPES; RADIANT FLUX DENSITY; SPACEBORNE ASTRONOMY
Imprint And Other Notes: Astronomy and Astrophysics, vol. 70, no. 3, Nov. 1978, p. 431-434.
Miscellaneous Notes: p. 431-4
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 16, 2011
Contact Us