Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...165l...9m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 165, no. 1-2, Sept. 1986, p. L9-L12.
Astronomy and Astrophysics
Astrophysics
15
Cepheid Variables, Emission Spectra, Red Giant Stars, Semiregular Variable Stars, Sodium Compounds, Stellar Envelopes, Supergiant Stars, Fabry-Perot Interferometers, M Stars, Stellar Composition, Stellar Evolution, Stellar Structure, Stellar Winds
Scientific paper
The first image (actually interferogram) of the circumstellar envelope of the luminous red supergiant μ Cep has been obtained by Fabry-Pérot interferometry in the Na I λ5890 Å line. No K I scattering was detected. The Na I emission is found up to about 30 arcseconds from the star, an extension possibly related with the stellar lifetime in the red giant phase. The envelope appears strongly asymmetric and inhomogeneous. Although dynamical interaction with the interstellar medium is not ruled out, the observations strengthen the case of an episodic and not spherically symmetric wind, agreeing with the presence of multiple circumstellar components in the stellar spectra.
Cailloux Mireille
Le Fèvre Oliver
Mauron Nicolas
Tilloles P.
No associations
LandOfFree
First image of the circumstellar envelope of the red supergiant MU CEP in the NA I 5890 A line does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with First image of the circumstellar envelope of the red supergiant MU CEP in the NA I 5890 A line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First image of the circumstellar envelope of the red supergiant MU CEP in the NA I 5890 A line will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1290057