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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta name="keywords" content="astrophysics, Kepler, period doubling, RR Lyrae, Cepheid, asteroseismology, stellar oscillations, pulsation, radial, nonradial"/>
<meta name="description" content="Homepage of the Kepler Group at the Konkoly Observatory"/>
<link href="style.css" rel="stylesheet" type="text/css" />
<title> KIK homepage </title>
<script src="equalcolumns.js" type="text/javascript"></script>
<link rel="shortcut icon" href="images/favkep.gif">
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-21262945-1']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
</head>
<body>
<div id="container">
<div id="header">
</div>
<div id="content">
<div id="left">
<br><br><br><br><br><br>
<div class="menu">
<div class="menuheader"><h3>Menu</h3></div>
<div class="menucontent">
<ul>
<li><a href="index.html"><font color="#c4ab6b">About KIK</font></a></li>
<ul>
<li><a href="index.html"><font size="1" color="#c4ab6b">in English </font></a><img src="images/en.png" width="16" height="10"></li>
<li><a href="index_hu.html"><font size="1">in Hungarian </font></a><img src="images/hu.png" width="16" height="10"></li>
</ul>
<li><a href="kepler.html"><font color="#bbbbbb">About Kepler</font></a></li>
<li><a href="members.html"><font color="#bbbbbb">KIK members</font></a></li>
<li><a href="research.html"><font color="#bbbbbb">Research</font></a></li>
<li><a href="grants.html"><font color="#bbbbbb">Grants</font></a></li>
<li><a href="papers.html"><font color="#bbbbbb">Publications</font></a></li>
<li><a href="data.html"><font color="#bbbbbb">Downloadable light curves</font></a></li>
<li><a href="media.html"><font color="#bbbbbb">In the media</font></a></li>
<li><a href="students.html"><font color="#bbbbbb">For students</font></a></li>
<li><a href="contact.html"><font color="#bbbbbb">Contact</font></a></li>
<li><a href="links.html"><font color="#bbbbbb">Links</font></a></li>
<li><a href="http://www.konkoly.hu/kepler/" target="new"><font color="#bbbbbb">Internal pages</font></a></li>
<li><a href="https://www.diamond-congress.hu/kasc5/" target="new"><font color="#bbbbbb">2012 KASC5 Conference</font></a></li>
<li><a href="ktia2013.html"><font color="#bbbbbb">KTIA pályázat <font size="2"> URKUT_10-1-2011-0019</font></a></li>
</ul>
</div>
<div class="menufooter"></div>
</div>
</div>
</div>
<div id="right_res">
<br><br><br><br><br><br>
<div class="menuheader"><h3>News</h3></div>
<div class="menucontent">
<p1><font color="#c4ab6b">2015 October</font> <br>
<font size="1.5" color="#bbbbbb"><a href="First_announcement.pdf"> <font size="1.5">First announcement</a> of the RR Lyrae conference organized by our group in Visegrád.</a>
</a></font></font> </p1><br>
<p1><font color="#c4ab6b">2015 September</font> <br>
<font size="1.5" color="#bbbbbb">K2 Fields 8&10 (Step-1) Step-2 proposal deadline: (6 August) 23 September 2015.</a>
</a></font></font> </p1><br>
<p1><font color="#c4ab6b">2015 February</font> <br>
<font size="1.5" color="#bbbbbb">K2 Fields 6&7 proposal deadline: 27 February 2015.</a>
</a></font></font> </p1><br>
<p1><font color="#c4ab6b">2015 January</font> <br>
<font size="1.5" color="#bbbbbb"><font size="1"></font><font size="1.5" color="#bbbbbb">
<a href="kepler_kik.pdf"> <font size="1.5">Report on the KIK group activity for 2014</a> is available (in Hungarian).
</font></font> </p1><br>
<p1><font color="#c4ab6b">2015 January</font> <br>
<font size="1.5" color="#bbbbbb"><font size="1"></font><font size="1.5" color="#bbbbbb">
First <a href="http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:1501.05967"> <font size="1.5">Kepler paper on asteroids</a> has been accepted
for publication in the Astronomical Journal.
</font></font> </p1><br>
<p1><font color="#c4ab6b">2015 January</font> <br>
<font size="1.5" color="#bbbbbb"> Our K2 RR Lyrae and Cepheid proposals have been approved for Fields 4&5.
</font></font> </p1><br>
<p1><font color="#c4ab6b">2014 May</font> <br>
<font size="1.5" color="#bbbbbb"><font size="1"></font><font size="1.5" color="#bbbbbb">
First K2 <a href="http://www.konkoly.hu/cgi-bin/IBVS?6108"> <font size="1.5"> RR Lyrae paper</a> published in the IBVS.
</font></font> </p1><br>
</div>
<div class="menufooter"></div>
</div>
</div>
<div id="middle">
<div class="post">
<div class="postheader"><h1>Welcome to the homepage of</h1></div>
<div class="postcontent">
<h2 align="center"><font size="6" color="#ffffff">KIK</font>
<h2 align="center"><font color="#ffffff">K</font><font color="#c4ab6b">epler</font>
<font color="#ffffff">I</font><font color="#c4ab6b">nvestigations <br>at the </font>
<font color="#ffffff">K</font><font color="#c4ab6b">onkoly Observatory</font></h2>
<div class="postimage">
<a href="images/KO_logo.jpg" target="new">
<img src="images/KO_logo.jpg" width="100" height="100" align="right" alt="Kepler"></img></a>
</div>
<p><font color="#ffffff"> KIK is a research group of astronomers at the <a href="http://www.konkoly.hu">Konkoly
Observatory</a>, who use the high-precision
space photometric data of Kepler, a NASA space telescope in order to study stellar interiors through
oscillations and planetary systems. The group was founded in 2007, two years before the launch of the
telescope. </font>
</p>
<div class="postimage">
<img src="images/FIG4a1.jpg" width="480" height="60" align="right" alt="Kepler"></img></a>
</div>
<div class="postimage">
<a href="images/Kepler.jpg" target="new">
<img src="images/Kepler.jpg" width="100" height="100" align="right" alt="Kepler"></img></a>
</div>
<p> Kepler is a NASA Discovery mission which aims at finding Earth-size planets around Sun-like
stars in the habitable zone. To do this, Kepler monitors around 150,000 stars continuously
close to the plane of our Galaxy, in the constellations Cygnus and Lyra. The planets are discovered
by measuring the brightness of the stars hunting for <i>transits</i>, the tiny dimmings caused by
the occultation by their planets. As of February, 2015 more than a thousand confirmed planets have been found,
among them the first multiple transiting system Kepler-9b and -9c, two Saturn-sized exoplanets
orbiting the same star; Kepler-10b, the smallest known rocky planet, Kepler-11b-g, a solar-like
star hosting six exoplantes, planets around binary stars, etc. In addition, over 4100 planetary candidates
have been announced, many of them Earth-sized or smaller, and some orbiting in the habitable zone.
</p>
<div class="postimage">
<img src="images/FIG4a2.jpg" width="480" height="60" align="right" alt="Kepler"></img></a>
</div>
<div class="postimage">
<a href="images/seism.jpg" target="new">
<img src="images/seism.jpg" width="100" height="90" align="right" alt="seismology"></img></a>
</div>
<p> Kepler allows the most precise stellar brightness measurements ever taken. The
continuous observations provide a unique way to study stellar variability due to spots,
flares, eclipses and pulsations or oscillations. Asteroseismology uses stellar oscillations
detected in the form of light variations to map stellar interiors, just like seismologists
use earthquakes to get information about the structure of planet Earth. Stellar seismology
provides means to derive accurate stellar parameters, like mass, radius and age. Parameters
of the detected transiting planets can be derived relative to their host stars. Therefore
seismology helps to characterize planets and planetary systems, as well. Studying any type
of pulsating stars benefits from the uninterrupted and precise measurements. Unexpected
astrophysical phenomena and important contributions to long-standing problems are anticipated
at this level in the case of practically all types of stars.
</p>
<div class="postimage">
<img src="images/FIG4a3.jpg" width="480" height="60" align="right" alt="Kepler"></img></a>
</div>
<div class="postimage">
<a href="images/RRL_sat.png" target="new">
<img src="images/RRL_sat.png" width="69" height="100" align="right" alt="seismology"></img></a>
</div>
<p>
The <a href="http://astro.phys.au.dk/KASC/"> Kepler Asteroseismic
Science Consortium</a> (KASC) was formed to organize and maintain asteroseismology and
pulsating variable star research with Kepler. This consortium now has more than 400 members
worldwide working in 13 different working groups. R. Szabó was appointed as chair of
Working Group#7 (Cepheids) and chair of the Stellar modelling subgroup of WG#13 (RR Lyrae),
while L. L. Kiss became the leader of Working Group#12 (Mira and semiregular stars). The
Hungarian Kepler Group (KIK) members participated in the target selection process before the
launch of Kepler. This was a crucial work, since Kepler can observe only preselected targets.
As working group leaders, we periodically update the Kepler astroseismic target list, thereby
actively influence the operation of the spacecraft and the mission. Finally a short list of
other Kepler-related activities that KIK conducts:
<br><br>
<ul>
<li><font color="#bbbbbb" size="2">- preparatory work, target selection</li>
<li>- ground-based follow-up observations</li>
<li>- data processing, data analysis</li>
<li>- stellar modeling</li>
<li>- interpretation and publication of the results</li>
<li>- writing successful Guest Observer and DDT proposals</li>
<li>- KASC organization, administration, policy decisions</li>
<li>- public outreach</li></font>
</ul>
</p>
<p> Recent results of our group are summarized <a href="research.html"><font color="#bbbbbb">
here</font></a>.</p>
<div class="postimage">
<img src="images/plan.jpg" width="300" height="240" align="center"></img>
</div>
</div>
</div>
</div>
<br><br><br><br><br><br><br><br><br>
</div></div>
<div class="postfooter"></div>
</div>
<div class="post"></div>
</div>
<div id="footer">
<span>Copyright © 2011-2015 Róbert Szabó All rights reserved.<br>
Best viewed using Firefox. Enable javascript for correct display.</span> </div>
</div>
</body>
</html>