29 MAY 2015 AT LEIDEN OBSERVATORY, LEIDEN UNIVERSITYarh/presentations/... · 2016. 2. 12. ·...
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Exoplanet geology; gas and dust from hot, rocky exoplanets Hot rocky exoplanets that are releasing gas and dust from evaporation or disintegration provide the opportunity to indirectly observationally probe the geology of rocky exoplanets. This can be done by studying the released gas and dust with techniques that have been previously applied to study the atmospheres of hot-Jupiter type exoplanets. Fig: Artist’s impression of the disintegrating exoplanet KIC12557548b Andrew Ridden-Harper Leiden Observatory [email protected] Delivery of organic material and water to planets through asteroid impacts The goal is to define observables for observations with JWST, METIS & SPICA. We will study the role of "exo-asteroids" in the delivery of water and organics to exoplanets which is interesting because water and organics are relevant for astro-biology. Method: N-body dynamic modeling of asteroids + planets. Challenge: Can we model the chemical composition of asteroid belts in different exoplanetary systems? Kateryna Frantseva SRON Groningen/Kapteyn Institute, Rijksuniversiteit Groningen k.frantseva @sron.nl Aqueous alteration of polycyclic aromatic hydrocarbons in meteorites and asteroids Is it possible through aqueous alteration to alter or breakdown polycyclic aromatic hydrocarbons in asteroids/meteorites? Fig: Scanning electron microscope image of a sample after 70 days. Experiment of olivine with naphthalene in anoxic water and 150˚C Claudia-Corina Giese Leiden Observatory and Department of Earth Sciences, Utrecht University [email protected] Laboratory High Resolution Infrared Spectra of Hydrocarbons With the Supersonic Plasma InfraRed Absorption Spectrometer (SPIRAS) at Leiden, accurate rotational constants of hydrocarbons are determined, which aid their detection in the atmospheres of planets and moons, e.g. Saturn’s moon Titan. Kirstin Doney Leiden Observatory [email protected] Fig: Artist’s impression of an asteroid impact Experimentally constraining the build-up of planetary interiors and planet formation conditions • High pressure (P) –temperature (T) experiments: Moon, asteroid Vesta, Angrite Parent Body • Determining P, T & redox conditions during (core) formation • Density of mantle melts at high P-T Metal ‘’core’’ Silicate ‘’mantle’’ Edgar S. Steenstra VU University Amsterdam [email protected] Phototrophy on Earth as a proxy for the remote detection of extraterrestrial life Evaluating the spectral features relating to phototrophy (i.e. the red/NIR edge and homochirality) for their utility as remotely detectable surface biosignatures on (exo)planets. Lucas Patty VU University Amsterdam [email protected] Molecules at the night-side of a non-transiting planet Using high dispersion infrared spectra, we aim to detect molecules on the night-side of the non-transiting hot Jupiter HD179949b. We can detect H2O and CO on the day-side of this planet using the same technique (Brogi et al., 2014). Preliminary results show promising signatures of both H2O and CO. Dr. Remco de Kok SRON [email protected] Modelling gas-phase and cosmic-ray-induced chemistry in planet-forming regions Abundance evolution of volatile species, when allowing chemical reactions to occur. The abundances indicate that chemical evolution alters the chemical composition of planet- forming material over time, and in different ways depending on radial distance from the central protostar. Christian Eistrup Leiden Observatory eistrup@ strw.leidenuniv.nl Modelling the inner rim of protoplanetary disks – fitting Pionier data of HD100453 Grain size, porosity and dust species influence the position, shape and optical thickness of the inner rim, which in turn determines the shape of the visibilities. Lucia Klarmann University of Amsterdam L.A.Klarmann @uva.nl Photo-stability of complex organic matter in cometary ices Vincent Kofman Leiden Observatory Department of Earth Sciences, Utrecht University kofman @strw.leidenuniv.nl Complex organic molecules (COM) are the building blocks of life. Several COMs have been detected in space, and their formation in ice has been proven. Understanding the photo-stability and photo-induced chemistry of COM embedded in ice & mineral matrices is vital in understanding the flux of COM to terrestrial planets. Meetings feature presentations by PhD students, postdocs and professors who are carrying out research relating to planetary science. Next meeting: 29 MAY 2015 AT LEIDEN OBSERVATORY, LEIDEN UNIVERSITY If you would like to join or would like more information, please email [email protected] . Measuring the spin of the directly imaged sub-stellar companion GQ Lupi b Preliminary result: Strong cross-correlation CO signal from the sub-stellar companion GQ Lupi b. The rotational spin of the companion can be determined from the width of the signal. Henriette Schwarz Leiden Observatory [email protected] High pressure experiments to study the formation, composition, and internal structure of rocky (and carbon-rich) exoplanets Fig: This microscopic image of our experimental sample shows that carbon does not form SiC up to the pressures of 2 GPa. This result impacts the interior structure models of carbon-rich exoplanets which assume huge layers of SiC. Fe, Si, O, Mg, Ca, Al, S and C have been used to simulate the interior of a carbon-rich exoplanet. Kaustubh Hakim Anton Pannekoek Institute, University of Amsterdam and VU University, Amsterdam [email protected] Adaptive optics for high-contrast imaging: The Holographic Modal Wavefront Sensor (HMWFS) Michael Wilby Leiden Observatory [email protected] Goal: Combining focal-plane wavefront sensing with apodising phase plate coronography to create temporally stable high-contrast regions in the science PSF, suited to direct imaging of exoplanets and their characterisation with next- generation instrumentation. Fig: Focal-plane image of a 6 Zernike mode HMWFS, with a) flat wavefront and b) 1.5 radians defocus error (Z 3 ). Modal content of the input wavefront is measured directly by coupled pairs of WFS spots presented at NAC (Netherlands Astronomy Conference) 2015 arranged by Andrew Ridden-Harper & Claudia-Corina Giese Present at NAC Present at NAC Poster Session (#18) Present at NAC Talk on Thursday at 12:15 in Grasuil 2 Present at NAC Present at NAC
Transcript of 29 MAY 2015 AT LEIDEN OBSERVATORY, LEIDEN UNIVERSITYarh/presentations/... · 2016. 2. 12. ·...
Exoplanet geology; gas and dust from hot, rocky exoplanetsHot rocky exoplanets that are releasing gas and dust from evaporation or disintegration provide the opportunity to indirectly observationally probe the geology of rocky exoplanets.
This can be done by studying the released gas and dust with techniques that have been previously applied to study the atmospheres of hot-Jupiter type exoplanets. Fig: Artist’s impression of the
disintegrating exoplanet KIC12557548b
Andrew Ridden-Harper Leiden Observatory [email protected]
Delivery of organic material and water to planets through asteroid impacts
The goal is to define observables for observations with JWST, METIS & SPICA.We will study the role of "exo-asteroids" in the delivery of water and organics to exoplanets which is interesting because water and organics are relevant for astro-biology.Method: N-body dynamic modeling of asteroids + planets.Challenge: Can we model the chemical composition of asteroid belts in different exoplanetary systems?
Kateryna FrantsevaSRON Groningen/Kapteyn Institute, Rijksuniversiteit [email protected]
Aqueous alteration of polycyclic aromatic hydrocarbons in meteorites and asteroids
Is it possible through aqueous alteration to alter or breakdown
polycyclic aromatic hydrocarbons in asteroids/meteorites?
Fig: Scanning electron microscope image of a sample after 70 days. Experiment of olivine with naphthalene in anoxic water and 150˚C
Claudia-Corina Giese Leiden Observatory and Department of Earth Sciences, Utrecht University [email protected]
Laboratory High Resolution Infrared Spectra of Hydrocarbons
With the Supersonic Plasma InfraRedAbsorption Spectrometer (SPIRAS) atLeiden, accurate rotational constants ofhydrocarbons are determined, whichaid their detection in the atmospheresof planets and moons, e.g. Saturn’smoon Titan. Kirstin Doney
Leiden Observatory [email protected]
Fig: Artist’s impression of an asteroid impact
Experimentally constraining the build-up of planetaryinteriors and planet formation conditions • High pressure (P) –temperature (T) experiments:
Moon, asteroid Vesta, Angrite Parent Body• Determining P, T & redox conditions
during (core) formation• Density of mantle melts
at high P-T
Metal ‘’core’’
Silicate ‘’mantle’’
Edgar S. SteenstraVU University [email protected]
Phototrophy on Earth as a proxy for the remote detection of extraterrestrial l ife
Evaluating the spectral features relating to phototrophy (i.e. the red/NIR edge and homochirality) for their utility as remotely detectable surface biosignatures on (exo)planets. Lucas Patty
VU University [email protected]
Molecules at the night-side of a non-transiting planetUsing high dispersion infrared spectra, we aim to detect molecules on the night-side of the non-transiting hot Jupiter HD179949b.We can detect H2O and CO on the day-side of this planet using the same technique (Brogi et al., 2014). Preliminary results show promising signatures of both H2O and CO.
Dr. Remco de [email protected]
Modelling gas-phase and cosmic-ray-induced chemistry in planet-forming regionsAbundance evolution of volatile species, when allowing chemical reactions to occur. The abundances indicate that chemical evolution alters the chemical composition of planet-forming material over time, and in different ways depending on radial distance from the central protostar.
Christian Eistrup Leiden [email protected]
Modelling the inner rim of protoplanetary disks –fitting Pionier data of HD100453
Grain size, porosity and dust species influence the position, shape and optical thickness of the inner rim, which in turn determines the shape of the visibilities.
Lucia KlarmannUniversity of [email protected]
Photo-stability of complex organic matter in cometary ices
Vincent KofmanLeiden ObservatoryDepartment of Earth Sciences, Utrecht University [email protected]
Complex organic molecules (COM) are the building blocks of life. Several COMs have been detected in space, and their formation in ice has been proven. Understanding the photo-stability and photo-induced chemistry of COM embedded in ice & mineral matrices is vital in understanding the flux of COM to terrestrial planets.
Meetings feature presentations by PhD students, postdocs and professorswho are carrying out research relating to planetary science.
Next meeting: 29 MAY 2015 AT LEIDEN OBSERVATORY, LEIDEN UNIVERSITYIf you would like to join or would like more information,
please email [email protected].
Measuring the spin of the directly imaged sub-stellar companion GQ Lupi b
Preliminary result: Strong cross-correlationCO signal from the sub-stellar companionGQ Lupi b. The rotational spin of thecompanion can be determined from thewidth of the signal. Henriette Schwarz
Leiden [email protected]
High pressure experiments to study the formation, composition, and internal structure of rocky (and carbon-rich) exoplanets
Fig: This microscopic image of our experimentalsample shows that carbon does not form SiC up tothe pressures of 2 GPa. This result impacts theinterior structure models of carbon-rich exoplanetswhich assume huge layers of SiC. Fe, Si, O, Mg, Ca,Al, S and C have been used to simulate the interior ofa carbon-rich exoplanet.
Kaustubh HakimAnton Pannekoek Institute, University of Amsterdam andVU University, [email protected]
Adaptive optics for high-contrast imaging: The Holographic Modal Wavefront Sensor (HMWFS)
Michael WilbyLeiden [email protected]
Goal: Combining focal-plane wavefront sensing with apodisingphase plate coronography to create temporally stable high-contrast regions in the science PSF, suited to direct imaging of exoplanets and their characterisation with next-generation instrumentation.
Fig: Focal-plane image of a 6 Zernike mode HMWFS, with a) flat wavefront and b) 1.5 radians defocus error (Z3). Modal content of the input wavefront is measured directly by coupled pairs of WFS spots
presented at NAC (Netherlands Astronomy Conference) 2015arranged by Andrew Ridden-Harper & Claudia-Corina Giese
Present at NAC
Present at NAC
Poster Session
(#18)
Present at NAC
Talk on Thursday at 12:15
in Grasuil 2
Present at NAC
Present at NAC
