2001A&A...367L...1C


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST23:21:52

2001A&A...367L...1C - Astronomy and Astrophysics, volume 367, L1-4 (2001/2-4)

Discovery of anomalous oxygen isotopic ratios in HR 4049.

CAMI J. and YAMAMURA I.

Abstract (from CDS):

We report the discovery in the ISO/SWS spectrum of the post-AGB star HR 4049 of emission bands due to 17O and 18O isotopes locked up in CO2 molecules. It is the first time these isotopomers are detected outside the solar system. Isotopic ratios derived in the optically thin limit are as low as 16O/17O=8.3±2.3 and 16O/18O=6.9±0.9. These values are at least one order of magnitude lower than any previously determined isotopic ratio in any type of evolved star.

Abstract Copyright:

Journal keyword(s): stars: AGB and post-AGB - stars: circumstellar matter - stars: individual: HR 4049 - stars: abundances - stars: late-type - infrared: stars

Simbad objects: 3

goto Full paper

goto View the reference in ADS

Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 89353 pA* 10 18 07.5892879413 -28 59 31.194541133   5.76 5.53     B9.5Ib/II 287 0
2 HD 101013 SB* 11 37 53.0007631393 +50 37 05.472894065   7.200 6.113     G9:IIIb:Ba2.5 133 0
3 V* EP Aqr AB* 21 46 31.8467491729 -02 12 45.901666975   7.93 6.78     M7-III: 209 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2001A&A...367L...1C and select 'bookmark this link' or equivalent in the popup menu


2020.07.13-23:21:52

© Université de Strasbourg/CNRS

    • Contact