Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...178..131h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 178, no. 1-2, May 1987, p. 131-136.
Astronomy and Astrophysics
Astrophysics
1
Cool Stars, Mira Variables, Oxygen, Brightness, Light Curve, Shock Waves, Stellar Envelopes, Stellar Mass Ejection
Scientific paper
Data presented in a previous paper are used to study the pulsational long-term behavior of the cool oxygen-rich Mira variable R Leonis over a range of 227 years (1957-1984) and to investigate related physical phenomena such as shock waves and mass loss. It is found that the period of R Leo is subject to sudden irregular small changes which occur about all 30 cycles. The maximum brightnesses showed no variability, but the minimum brightnesses showed highly significant long-term variations for which recent evolutionary models give no satisfactory explanations. The light curve is very closely connected with the shock wave activity. A period-amplitude relationship is significant in R Leo and is interpreted as being due to variable shock intensities. There is a tendency for the light curve asymmetry to increase together with the period.
No associations
LandOfFree
Pulsational long-term behavior of the cool oxygen-rich Mira variable R Leonis 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 Pulsational long-term behavior of the cool oxygen-rich Mira variable R Leonis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulsational long-term behavior of the cool oxygen-rich Mira variable R Leonis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-856160