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BEGIN:VEVENT
UID:a96548175379fb20cfd5ef36f567678d
CATEGORIES:Guest Speaker Night
CREATED:20151103T111653
SUMMARY:Special Guest Speaker - Sue Knight
LOCATION:Green Point Observatory
DESCRIPTION:<p><span style="color: inherit; font-family: 'Helvetica Neue', Helvetica, A
 rial, sans-serif; font-size: 35px; line-height: 1.1;">The Search for Cool C
 ompanions Around White Dwarf Stars</span></p><h3>Sue Knight</h3><p><img src
 ="images/articles/Sue_Knight.jpg" alt="Sue Knight" width="466" height="262"
  style="margin-right: 10px; float: left;" />Sue Knight has been a member of
  SASI since 1998. She was actively involved as the society&rsquo;s web admi
 nistrator and Committee member. Sue also arranged the monthly Guest Speaker
  talks, participated as a volunteer at the annual Open Nights and has writt
 en several articles for the society&rsquo;s journal.</p><p>As an Informatio
 n Technology specialist for many years, Sue decided to change career direct
 ion, after attending several astronomy conferences worldwide. She completed
  studies toward a Bachelor of Science degree at Macquarie University in 201
 1 and is finalizing the next stage of her studies at Leicester University i
 n the UK. Her research was focused on the search of companions to white dwa
 rf stars in the infrared regime using Spitzer Telescope data.</p><p>Sue is 
 an enthusiastic traveller and photographer as well as an avid reader of sci
 ence fiction novels.</p><p>We're looking forward to hear about Sue's resear
 ch:</p><h4 style="text-align: left;"><span style="color: inherit; line-heig
 ht: 1.1;"></span></h4><h4 style="text-align: left;">The Search for Substell
 ar Common Proper Motion Companions to White Dwarfs</h4><div style="text-ali
 gn: left;">A large sample of white dwarfs within our solar neighbourhood ha
 s been examined to search for resolved common proper motion companions. The
  luminosity of these white dwarfs make them ideal candidates for detecting 
 low mass objects such as brown dwarfs and gas giant planets.</div><div styl
 e="text-align: left;"> </div><div style="text-align: left;">Ultra cool brow
 n dwarfs are particularly interesting due to their scarcity and they provid
 e a crucial link between the colder gas giant planets and hotter T spectral
  type brown dwarfs.</div><div style="text-align: left;"> </div><div style="
 text-align: left;">Furthermore, searching for brown dwarfs can also place c
 onstraints on the frequency of planetary systems around white dwarf progeni
 tors. They also offer a unique opportunity to test properties predicted for
  them by atmospheric models.</div><div style="text-align: left;"> </div><di
 v style="text-align: left;">I discuss my research and findings on the searc
 h for these widely separated companions using data from the Spitzer Telesco
 pe data as well the difficulty in distinguishing between brown dwarfs and e
 xtrasolar planets to date.</div>
X-ALT-DESC;FMTTYPE=text/html:<p><span style="color: inherit; font-family: 'Helvetica Neue', Helvetica, A
 rial, sans-serif; font-size: 35px; line-height: 1.1;">The Search for Cool C
 ompanions Around White Dwarf Stars</span></p><h3>Sue Knight</h3><p><img src
 ="https://www.sasi.net.au/images/articles/Sue_Knight.jpg" alt="Sue Knight" 
 width="466" height="262" style="margin-right: 10px; float: left;" />Sue Kni
 ght has been a member of SASI since 1998. She was actively involved as the 
 society&rsquo;s web administrator and Committee member. Sue also arranged t
 he monthly Guest Speaker talks, participated as a volunteer at the annual O
 pen Nights and has written several articles for the society&rsquo;s journal
 .</p><p>As an Information Technology specialist for many years, Sue decided
  to change career direction, after attending several astronomy conferences 
 worldwide. She completed studies toward a Bachelor of Science degree at Mac
 quarie University in 2011 and is finalizing the next stage of her studies a
 t Leicester University in the UK. Her research was focused on the search of
  companions to white dwarf stars in the infrared regime using Spitzer Teles
 cope data.</p><p>Sue is an enthusiastic traveller and photographer as well 
 as an avid reader of science fiction novels.</p><p>We're looking forward to
  hear about Sue's research:</p><h4 style="text-align: left;"><span style="c
 olor: inherit; line-height: 1.1;"></span></h4><h4 style="text-align: left;"
 >The Search for Substellar Common Proper Motion Companions to White Dwarfs<
 /h4><div style="text-align: left;">A large sample of white dwarfs within ou
 r solar neighbourhood has been examined to search for resolved common prope
 r motion companions. The luminosity of these white dwarfs make them ideal c
 andidates for detecting low mass objects such as brown dwarfs and gas giant
  planets.</div><div style="text-align: left;"> </div><div style="text-align
 : left;">Ultra cool brown dwarfs are particularly interesting due to their 
 scarcity and they provide a crucial link between the colder gas giant plane
 ts and hotter T spectral type brown dwarfs.</div><div style="text-align: le
 ft;"> </div><div style="text-align: left;">Furthermore, searching for brown
  dwarfs can also place constraints on the frequency of planetary systems ar
 ound white dwarf progenitors. They also offer a unique opportunity to test 
 properties predicted for them by atmospheric models.</div><div style="text-
 align: left;"> </div><div style="text-align: left;">I discuss my research a
 nd findings on the search for these widely separated companions using data 
 from the Spitzer Telescope data as well the difficulty in distinguishing be
 tween brown dwarfs and extrasolar planets to date.</div>
DTSTAMP:20260906T193347
DTSTART;TZID=Australia/Sydney:20151210T193000
DTEND;TZID=Australia/Sydney:20151210T213000
SEQUENCE:0
TRANSP:OPAQUE
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