BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//TYPO3/NONSGML News system (news)//EN
BEGIN:VEVENT
UID:news-21891@phys.au.dk
DTSTAMP:20210929T105652Z
DTSTART:20130313T141500Z
DTEND:20130313T150000Z
END:VEVENT
END:VCALENDAR




<div class="news news-single">
	<div class="article" itemscope="itemscope" itemtype="http://schema.org/Article">
		
	
			<script type="text/javascript">
				const showAllContentLangToken = "Show all content ";
			</script>

			
			

			<article class="typo3-delphinus delphinus-gutters">

				<!-- News PID: 83035 - used for finding folder/page which contains the news / event -->
				<!-- News UID: 21891 - the ID of the current news / event-->

				<div class="news-event">
					<div class="news-event__header">
						<!-- Categories -->
						
							<span class="text--stamp">
<!-- categories -->
<span class="news-list-category">
	
		
	
		
	
		
	
</span>

</span>
						

						<!-- Title -->
						<h1 itemprop="headline">SAC Seminar - Günter Houdek: Main-sequence stars: mode physics and seismic diagnostics</h1>
						
					</div>

					
						<!-- Top image -->
						
					

					<div class="news-event__content">

						<!-- Events info box -->
						
								

								<div class="news-event__info theme--dark" id="event-info">
									<h2 class="screenreader-only">Info about event</h2>

									
											<!--- Same date -->
											<div class="news-event__info__item news-event__info__item--time">
												<h3 class="news-event__info__item__header text--label-header">Time</h3>
												<div class="news-event__info__item__content">
													<span class="u-avoid-wrap">
														Wednesday 13  March 2013,
													</span>
													<span class="u-avoid-wrap">
														&nbsp;at 15:15 -  16:00
													</span>
													<p class="news-event__info__item__ical-link"><a href="/en/news/item/artikel/sac-seminar-guenter-houdek-main-sequence-stars-mode-physics-and-seismic-diagnostics-1?tx_news_pi1%5Bformat%5D=ical&amp;type=9819&amp;cHash=c4b0a2df6740e9b7d2bcaab59a5befd1">Add to calendar</a></p>
												</div>
											</div>
										

									<!-- Location detailed -->
									
											<!-- Location Simple -->
											
										

									<!-- Organizer detailed -->
									
											<!-- Organizer Simple -->
											
										

									<!-- Price -->
									

									<!-- Event link -->
									

									<!-- Registration -->
									
								</div>
							

						
							<!-- Media -->
							
								



							
						

						
							<div class="news-event__content__text">
								<span class="text--byline" id="byline">
									

									<!-- Author -->
									
										<span itemprop="author" itemscope="itemscope" itemtype="http://schema.org/Person">
											
													By
												

											
													<a href="mailto:brigitte@phys.au.dk">
														<span itemprop="name">Brigitte Christina Harke Henderson</span>
													</a>
												
										</span>
									
								</span>

								

									<!-- Body text -->
									<p><strong><strong>Speaker</strong>: </strong>Günter Houdek, Stellar Astrophysics Centre, Aarhus University
</p>
<p><strong>Title</strong>: Main-sequence stars: mode physics and seismic diagnostics
</p>
<p><strong>Abstract</strong>: The physics of solar-like oscillations determines their observable properties, i.e. frequencies, amplitudes, lifetimes, line asymmetries and phase relations. Measurements of these seismic quantities have been carried out with high precision in the Sun, and with the successfully launched space missions CoRoT and Kepler such seismic measurements are now being extended to low-degree solar-like oscillations in distant stars. I discuss the physical processes that determine the mode lifetimes of solar-like acoustic oscillations with application to Kepler observations and our current understanding of the mechanism that drives these oscillations to the observed amplitudes via their coupling with the turbulent velocity field in the outer convectively unstable stellar layers. I also discuss an asteroseismic diagnostic technique that allow us to measure some of the gross stellar properties from low-degree acoustic modes, and illustrate its application to Kepler stars. I conclude my presentation with a&nbsp; discussion about mode stability of Delta Scuti stars with emphasis on the location of the classical instability strip.</p>
								
							</div>
						
					</div>

					
						<!-- Content elements -->
						
					
				</div>
			</article>

			
				
				
			

			<!-- related things -->
			
		

	</div>
</div>