Characterizing a Cold Brown Dwarf Companion to a White Dwarf Chris Gelino Archive Scien<st: Keck Observatory Archive R. Hurt (IPAC)
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
CharacterizingaColdBrownDwarfCompaniontoaWhiteDwarf
ChrisGelinoArchiveScien<st:KeckObservatoryArchive
R.Hurt(IPAC)
CharacterizingaColdBrownDwarfCompaniontoaWhiteDwarf
ChrisGelinoArchiveScien<st:KeckObservatoryArchive
R.Hurt(IPAC)
WarmPlanetary
BrownDwarfsasExoplanetAnalogs
• Canstudyold,planetmassobjectswithouthoststarcontamina<on
• Effec<vetemperatures~300-2000K• Massesdownto<10Mjup
• Radii~Rjup
Evolu<onaryTracks
Burrowsetal.(1997)
WD0806-661B
.0 0.4 1.1 2.6 5.5 11.3 22.9 45.9 92.3 184.1 367
• FoundbyLuhmanetal.(2011)– Lookedatmul<-epochIRACimagesofnearbystarswithsignificantmo<on
– Searchedforobjectswithcommonmo<onsinthefields
– Foundafaintmo<oncompaniontothewhitedwarfWD0806-661.
IRAC[4.5]2004Dec15
WD0806-661B
0.0 0.2 0.6 1.4 2.9 6.1 12.3 24.7 49.6 99.1 197
IRAC[4.5]2009Apr24
• FoundbyLuhmanetal.(2011)– Lookedatmul<-epochIRACimagesofnearbystarswithsignificantmo<on
– Searchedforobjectswithcommonmo<onsinthefields
– Foundafaintmo<oncompaniontothewhitedwarfWD0806-661.
WD0806-661B
Luhmanetal.(2011)
120”
[4.5]=16.75+/-0.05magJ>23.9magDistance=19.2+/-0.6pcAge=2.0+0.5-0.5Gyr(Luhmanetal.2012)
FirstHSTDetec<on(F110W)
044 -0.021 0.0021 0.026 0.049 0.072 0.095 0.12 0.14 0.17 0.1
2013Aug8
Luhmanetal.(2014)
FirstHSTDetec<on(F110W)
F110W=25.70+/-0.08[3.6]=19.65+/-0.15[4.5]=16.88+/-0.05J-[4.5]≈8.12Age=2.0+0.5-0.5GyrMass=6-9MjupTeff=300-345K
Luhmanetal.(2014)J-[4.5]
M4.5
WD0806B
FillingOuttheSED
• 7HSTorbitstogetphotometryinF105W,F125W,F127M,andF160WwithWFC3/IR
• Complementsexis<ngF110W,[3.6],and[4.5]data
• Goalistobekerconstrainthephysicalproper<esinferredfromthemodels
HSTData
044 -0.021 0.0021 0.026 0.049 0.072 0.095 0.12 0.14 0.17 0.1
2013Aug8
HSTData
044 -0.021 0.0021 0.026 0.049 0.072 0.095 0.12 0.14 0.17 0.1
000 0.0095 0.0191 0.0287 0.0383 0.0479 0.0575 0.0670 0.0767 0.0862 0.09
10"
2014Feb22
AllPhotometry
F105W 25.72+/-0.11 Gelinoetal.(inprep)
F110W 25.70+/-0.0825.62+/-0.09
Luhmanetal.(2014)Gelinoetal.(inprep)
F125W 25.85+/-0.14 Gelinoetal.(inprep)
F127M 24.85+/-0.19 Gelinoetal.(inprep)
F160W 25.10+/-0.13 Gelinoetal.(inprep)
[3.6] 19.65+/-0.15 Luhmanetal.(2012)
[4.5] 16.88+/-0.05 Luhmanetal.(2012)
Comparisontootherbrowndwarfs
Schneideretal(2016)
Comparisontootherbrowndwarfs
Schneideretal(2016)
CollapseoftheWienTail?
ModelFimng
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Morley et al. (2014)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Tremblin et al. (2015)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Burrows et al. (2003)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Saumon et al. (2012)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
50%waterclouds
100%waterclouds Noclouds
NocloudsNon-eqchem.
ModelFimng
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Morley et al. (2014)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Tremblin et al. (2015)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Burrows et al. (2003)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Saumon et al. (2012)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Mass=4-9MJupTeff=350-400K
FindingtheBest-fitModel
Conclusions• WD0806-661BissimilartotheYdwarfWISE1828+2650thoughislikelywarmer.
• FromModelfimng,Teff~350-400Kwithlog(g)>4.5– Notafeasiblecombina<onforanageof2Gyr
• Noneoftheexploredmodelsdoagreatjobfimngthenear-IR+IRdata(probablyrelatedtonon-equilibriumchemistryandclouds)
• ToofaintforHSTspectrum–excellentJWSTtarget!
ModelFimng:noSpitzer
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Morley et al. (2014)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Tremblin et al. (2015)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Burrows et al. (2003)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Saumon et al. (2012)
200 400 600 800
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
5.25
5.50
Related Documents
