Generation of Extended Chromospheres and Mass Loss of Late-Type Giant Stars due to Acoustic Shock Waves

1989 ◽  
Vol 101 ◽  
pp. 560 ◽  
Author(s):  
Manfred Cuntz
Keyword(s):  
Shock Waves ◽  
Mass Loss ◽  
Late Type ◽  
Giant Stars ◽  
Type Giant

scholarly journals Acoustic wave driven mass loss in late-type giant stars

1987 ◽  
Vol 122 ◽  
pp. 325-326 ◽  
Author(s):  
M. Cuntz ◽  
L. Hartmann ◽  
P. Ulmschneider
Keyword(s):  
Acoustic Wave ◽  
Mass Loss ◽  
Wave Field ◽  
Wave Energy ◽  
Acoustic Waves ◽  
Late Type ◽  
Large Wave ◽  
Giant Stars ◽  
Wave Energy Flux ◽  
Type Giant

Mass loss generated by radiatively damped acoustic waves is investigated. We find that a persistent wave energy flux leads to extended chromospheres. Mass loss is quite likely produced if the wave field retains a transient character and if large wave periods are used.

Acoustic Wave Driven Mass Loss in Late-Type Giant Stars

1987 ◽  
pp. 325-326 ◽  
Author(s):  
M. Cuntz ◽  
L. Hartmann ◽  
P. Ulmschneider
Keyword(s):  
Acoustic Wave ◽  
Mass Loss ◽  
Late Type ◽  
Giant Stars ◽  
Type Giant

Magnesium emission variability among late-type giant stars

1982 ◽  
Vol 253 ◽  
pp. 716 ◽  
Author(s):  
D. J. Mullan ◽  
R. E. Stencel
Keyword(s):  
Late Type ◽  
Giant Stars ◽  
Type Giant

scholarly journals Stellar activity

1986 ◽  
Vol 118 ◽  
pp. 283-283
Author(s):  
D. K. Duncan
Keyword(s):  
Sunspot Cycle ◽  
Late Type ◽  
Stellar Activity ◽  
Giant Stars ◽  
Rotation Periods ◽  
Type Giant

We have been monitoring the CaII H and K emission in late-type giant stars using the Mt Wilson 60-inch telescope. It is a continuation of work that Olin Wilson began almost 20 years ago. As a result not only have starspot cycles been detected (equivalent to the solar sunspot cycle), but rotation periods have now been measured.

Luminosity and Temperature from Near-Infrared Spectra of Late-Type Giant Stars

1997 ◽  
Vol 113 ◽  
pp. 1411 ◽  
Author(s):  
S. V. Ramirez ◽  
D. L. Depoy ◽  
Jay A. Frogel ◽  
K. Sellgren ◽  
R. D. Blum
Keyword(s):  
Infrared Spectra ◽  
Near Infrared ◽  
Late Type ◽  
Giant Stars ◽  
Near Infrared Spectra ◽  
Type Giant
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