Interview with Physics & Astronomy Professor Brad Hansen
Planetary Insights – Exoplanets
Professor Brad Hansen discusses his research into exoplanet systems
5th Annual Earth and Planetary Sciences Student Symposium
The 5th Annual Earth and Planetary Sciences Student Symposium takes place today from 10 AM to 5 PM. There will be two oral sessions and a poster session followed by a Post-Symposium BBQ from 5 til 8 PM.
We are please to host not only students from the UCLA departments of Earth and Space Sciences, Physics and Astronomy, and Atmospheres and Oceanic Science, but also students from Cal State Northridge.
All are welcome for the BBQ. Tickets are priced as follows: $5 undergraduate / $8 graduate / $10 postdocs, staff & faculty. Breakfast and lunch are open to symposium registrants only.
TIME | ACTIVITY | LOCATION |
9am | Breakfast | Geology 3680 |
10am | Oral Session 1 | Slichter 3853 |
10:05am | Junko Isa | Slichter 3853 |
10:20am | Carolyn Crow | Slichter 3853 |
10:35am | Jennifer Scully | Slichter 3853 |
10:50am | Break | Slichter 3853 |
11:05am | Dave Jewitt (Keynote Talk) | Slichter 3853 |
11:35am | Break | Slichter 3853 |
12pm | Lunch | Geology 3680 |
1:30pm | Oral Session 2 | |
1:35pm | Jeanine Ash | Slichter 3853 |
1:50pm | Jozi del Angel | Slichter 3853 |
2:05pm | Patrick Boehnke | Slichter 3853 |
2:20pm | Beth Ann Bell | Slichter 3853 |
2:35pm | Break | Slichter 3853 |
3pm | Poster Session | Geology 3680 |
4:30pm | Break | Geology 3680 |
5pm | Post-Symposium Party | Franz-Geology Courtyard |
Space scientist explores mystery of ice on a hot planet
Scientists have long known that certain surface patches on Mercury, the planet first in line from the sun in our solar system, reflect radar signals just like ice does in the polar regions of Earth. To their delight, new data from the orbiting NASA MESSENGER spacecraft confirm the thesis: The radar-bright spots correspond to the darkest parts of the craters at the north and south poles of the planet where it is cold enough to preserve water ice.
Click here to read the full article by Kathleen Micham on UCLA Today
April 26, 2012: Precise Assemblies, Clusters, Superatoms, and Cluster-Assembled Materials
Speaker:
Paul Weiss
CNSI/UCLA
Abstract:
Precise clusters offer a new set of building blocks with unique properties that can be leveraged both individually and in materials in which their coupling can be controlled by choice of linker, dimensionality, and structure. Initial measurements in both of these worlds have been made. Isolated adsorbed or tethered clusters are probed with low-temperature scanning tunneling microscopy and spectroscopy. Even closely related elements behave differently on identical substrates. Surprising spectral variations are found for repeated measurements of single isolated, tethered clusters. In periodic solids, precise clusters joined by linkers can be measured experimentally and treated theoretically with excellent agreement, in part due to the relatively weak coupling of the clusters. This coupling can be controlled and exploited to produce materials with tailored properties. Some of the rules of thumb for predicting these properties are being developed through these initial studies and the limit to which they can be applied is being explored.
Ices and Organics in the Inner Solar System Conference: Call for Abstracts
2nd Announcement and Call for Abstracts
On June 12th and 13th, the UCLA Institute for Planets and Exoplanets (iPLEX) will host a two day interdisciplinary conference on the nature, distribution, origin and evolution of frozen volatiles and organics in the inner solar system. Topics will include:
• Polar ice and permafrost on planets and asteroids
• Delivery of terrestrial planet atmospheres and oceans
• Water and organics in comets
• Liquid water habitats in the inner solar system
The conference format will include summary talks as well as contributed papers, with time set aside for discussion and questions. Attendance is limited to 60 participants. Final deadline for abstract submission is May 25th.
Meeting Logistics
The conference will take place on the UCLA campus. Information regarding meeting location, transportation, and accommodations can be found on the Logistics Page. Guests are advised to book their accommodations early, as hotels are expected to fill up due to the UCLA graduation ceremony occurring the same week.
Registration and Abstract Submission
There is a $75 registration fee. Registration is compulsory for all attendees and can be accessed by clicking on the link below. Once you have entered your information, you will be provided with a link to an optional abstract upload page. Abstracts should be in .pdf format with maximum length of one page.
[button link=”https://commerce.cashnet.com/IPLEX” color=”teal”]Registration[/button]
Please contact iplex_conferences@ess.ucla.edu if you have questions or comments.
April 19, 2012: Recent Insights into Planet Formation and Debris Disks
Speaker:
Hilke Schlichting
Abstract:
I will discuss recent insights that we have gained into planet formation and debris disks. In the first half of my talk, I will focus on the Kuiper belt, located at the outskirts of our planetary system, and the formation of debris disks. I will show how studying small km-sized Kuiper belt objects enables us to put our Kuiper belt into context of debris disks around other stars and I will explain how we can use the size distribution of small Kuiper belt objects and debris disks to gain insights into collisional cascades and the material properties of the objects themselves. In the second half, I will review dynamical models and geochemical constraints from the Earth, Moon and Mars and discuss their implications for the last stage of terrestrial planet formation.
April 12, 2012: Environments of Human Evolution in Africa: the Isotope Evidence
Speaker:
Thure Edward Cerling
April 5, 2012: The Earliest Aqueous, Habitable(?) Environments on Mars: A View from Orbit
Speaker:
Bethany Ehlmann
Caltech
Abstract:
The emerging picture of Mars’ first billion years includes diverse environments involving liquid water and chemical alteration. Clay, carbonate, chloride, and sulfate minerals have all been detected and mapped from orbit in coherent geologic units. When near-infrared spectroscopic detections of minerals from the orbiting CRISM imaging spectrometer are coupled with high-resolution images of morphology provided by orbiting cameras, distinctive aqueous, potentially habitable, environments can be identified, preserved in the geologic record. I will give a global overview of the most recent findings, delve into the details of transitions recorded in a few key stratigraphic sections, and discuss the hypothesis that the most widespread and long-lived aqueous environments on early Mars were in the subsurface.
Large UCLA turnout at LPSC 2012
The Lunar and Planetary Science Conference (LPSC), held March 19–23, 2012 in Woodlands, Texas, was a memorable one. In the face of disheartening news of a proposed 20% cut to NASA’s planetary science budget, it was very encouraging to see a huge turnout from UCLA at this year’s LPSC. Highlights included new results from DAWN at Vesta and Messenger at Mercury, as well as new isotopic studies of extraterestrial samples and theoretical work concerning Enceladus’ plumes. Not only did we have more than 20-25 people (counting recent graduates) presenting work on topics ranging from Vesta, the Moon, Mars, Earth impacts and the early solar system, but UCLA was also a dominant force in starting the “Young Scientists for Planetary Exploration” movement, which was set up as a means of lobbying congress to restore planetary funding. Here are this year’s UCLA LPSC Abstracts:
- K. Ziegler, M. Zolensky, E. D. Young, A. Ivanov Oxygen Isotope Compositions of the Kaidun Meteorite — Indications for Aqueous Alteration of E-Chondrites
- E. A. Bell, T. M. Harrison Trace Elements Reveal a Possible Link Between Jack Hills Detrital Zircons and the Late Heavy Bombardment
- V. S. Heber, A. J. G. Jurewicz, P. Janney, M. Wadhwa, K. D. McKeegan, D. S. Burnett Magnesium Isotopic Composition of Solar Wind as Test for Sun-Solar Wind Isotopic Fractionation: A Progress Report
- P. H. Warren Constraints on the Impact-Accreted Carapace Hypothesis for the Lunar Farside Highlands
- D. A. Paige, J. K. Harmon, D. E. Smith, M. T. Zuber, G. A. Neumann, S. C. Solomon Thermal Stability of Frozen Volatiles in the North Polar Region of Mercury
- J. R. Lyons CO Self-Shielding by Various Stellar Sources
- L. P. Keller, K. D. McKeegan, Z. D. Sharp The Oxygen Isotopic Composition of MIL 090001: A CR2 Chondrite with Abundant Refractory Inclusions
- P. O. Hayne, O. Aharonson, J. L. Bandfield, B. T. Greenhagen, D. A. Paige The Surface Roughness of the Moon from Diviner Infrared Observations
- J. W. Boyce, C. Ma, J. M. Eiler, M. B. Baker, Y. Liu, E. M. Stolper, L. A. Taylor Sulfur Speciation in Lunar and Terrestrial Apatite
- G. A. Neumann, J. F. Cavanaugh, X. Sun, E. Mazarico, D. E. Smith, M. T. Zuber, S. C. Solomon, D. A. Paige Dark Material at the Surface of Polar Crater Deposits on Mercury
- P. H. Warren, A. E. Rubin The Miller Range 090340 Dunite: Not a Uniquely Ferroan Ureilite, not even a Ureilite
- A. Shahar, L. A. Kaufman, M. F. Horan, T. D. Mock, L. Deng, C. A. Macris Iron Isotope Fractionation During Planetary Differentiation
- F. Zambon, M. C. De Sanctis, E. Ammannito, M. T. Capria, F. Capaccioni, F. Carraro, S. Fonte, A. Frigeri, G. Magni, S. Marchi, E. Palomba, F. Tosi, D. T. Blewett, C. A. Raymond, C. T. Russell, T. N. Titus Classification of Dawn VIR hyperspectral Data of Vesta
- T. Roatsch, E. Kersten, K.-D. Matz, F. Preusker, F. Scholten, R. Jaumann, C. A. Raymond, C. T. Russell High Resolution Vesta HAMO Atlas Derived from Dawn FC Images
- J. Marin-Carbonne, K. D. McKeegan, A. D. Davis, G. J. MacPherson, R. A. Mendybaev, F. M. Richter O, Si and Mg Isotopic Compositions of FUN Inclusion Vigarano 1623-5
- J. G. Luhmann, M. Villarreal, Y. J. Ma, C. T. Russell, H. Y. Wei, T. L. Zhang The Venus Solar Wind Interaction — Is It Purely Ionospheric?
- J. L. Bandfield, E. Song, P. O. Hayne, R. R. Ghent, D. A. Paige Lunar “Cold Spots”: A New Class of Thermophysically and Morphologically Distinct Craters
- J. Isa, A. E. Rubin, J. T. Wasson Bulk Compositions of CV and CK Chondrites: Support for a Close Relationship
- S. C. Ingalls, E. D. Young, M. Gounelle Do Magnesium Isotope Systematics of Al-Rrich Chondrules Offer Insights into the History of Chondrule Formation in General?
- Y.-D. Jia, C. T. Russell, K. K. Khurana, T. I. Gombosi Constraining Seasonal Changes of the Enceladus Plume
- J. E. C. Scully, C. T. Russell, A. Yin, D. A. Williams, D. T. Blewett, D. L. Buczkowski, E. Ammannito, T. Roatsch, F. Preusker, L. Le Corre, R. A. Yingst, W. B. Garry, R. Jaumann, C. M. Pieters, C. A. Raymond Geologic Mapping of the Av-4 Domitia Quadrangle of Asteroid 4 Vesta
- D. E. Moser, K. R. Chamberlain, K. T. Tait, A. K. Schmitt, I. R. Barker, B. C. Hyde, J. R. Darling Microstructure and U-Pb Dates of Martian Baddeleyite Rimmed by Zircon Indicate a ‘Young’ Igneous and Metamorphic History for Shergottite NWA 5298
- E. D. Young, A. Shahar
Magnesium, Silicon, and Oxygen Isotopic Consequences of CAI Evaporation and Inversion for Primordial Melt Compositions - C. C. Allen, B. T. Greenhagen, K. L. Donaldson Hanna, D. Z. Oehler, D. A. Paige Derivation of FeO Abundances in Lunar Pyroclastic Deposits Using LRO Diviner
- M. E. Walker, J. L. Mitchell A Model for the Elastic Libration of Europa’s Ice Shell
- A. E. Rubin Impact-Induced Aqueous Alteration of CM and CV Carbonaceous Chondrites
- J. R. Lyons Isotope Signatures in Organics due to CO and N_2 Self-Shielding
- C. J. Snead, K. D. McKeegan, M. Burchell, A. T. Kearsley Oxygen Isotope Measurements of Simulated Wild 2 Impact Crater Residues
- M. M. Wielicki, T. M. Harrison, P. Boehnke, A. K. Schmitt Modeling Zircon Saturation Within Simulated Impact Events: Implications on Impact Histories of Planetary Bodies
- J.-P. Williams, A. V. Pathare Scaling Effective Diameters of Small Impact Crater Clusters on Mars
- J.-P. Williams Stagnant Lid Heterogeneity on Mars
- C. J. Budney, L. L. Lowes, A. M. Sohus, A. S. Wessen, T. D. Stelzner, A. Urban NASA Planetary Science Summer School: Preparing the Next Generation of Planetary Mission Leaders
- B. J. Travis, G. Schubert Hydrothermal Flow Within Enceladus
- R. A. Mendybaev, F. M. Richter, J. Marin-Carbonne, K. D. McKeegan Crystallization of Evaporating Forsterite-Rich Melts: Texture and Magnesium and Silicon Isotopic Compositions of the Evaporation Residues
- J.-Ph. Combe, T. B. McCord, E. Palomba, M. C. De Sanctis, T. H. Prettyman, C. M. Pieters, E. Ammannito, F. Capaccioni, M. T. Capria, C. A. Raymond, C. T. Russell Water and Other Volatiles on Vesta After the Lunar Case
- T. B. McCord, J.-Ph. Combe, C. Taffin Composition of a Comet Nucleus: Preparing for Rosetta Observations
- M. A. Siegler, B. G. Bills, D. A. PaigeSpatio-Temporal Evolution of Lunar Polar Cold Traps
- E. J. Foote, D. A. Paige, M. K. Shepard, J. R. Johnson, W. M. Grundy, S. F. Biggar, B. T. Greenhagen, C. C. Allen Laboratory and Diviner Bidirectional Reflectance Measurements of Apollo Soils
- W. B. Garry, M. V. Sykes, D. L. Buczkowski, D. A. Williams, R. A. Yingst, S. C. Mest, R. Jaumann, C. M. Pieters, T. Roatsch, F. Preusker, C. T. Russell, C. A. Raymond, G. Filacchione, Dawn Science Team Geologic Mapping of Av-10 Oppia Quadrangle of Asteroid 4 Vesta
- F. Capaccioni, M. C. De Sanctis, E. Ammannito, J. Y. Li, A. Longobardo, D. W. Mittlefehldt, E. Palomba, C. M. Pieters, S. E. Schroeder, F. Tosi, H. Hiesinger, D. T. Blewett, C. T. Russell, C. A. Raymond Spectral Characterization of Bright Materials on Vesta
- T. Hoogenboom, P. Schenk, O. L. White, D. Williams, H. Heisinger, W. B. Garry, R. A. Yingst, D. L. Buczkowski, T. B. McCord, R. Jaumann, C. M. Pieters, R. W. Gaskell, G. Neukum, N. Schmedemann, S. Marchi, A. Nathues, L. LeCorre, T. Roatsch, F. Preusker, M. C. De Sanctis, G. Fillacchione, C. A. Raymond, C. T. Russell Geologic Mapping of the Av-11 Pinaria Quadrangle of Asteroid 4 Vesta
- M. D. Hopkins, S. J. Mojzsis Early Thermal Events Recorded in Zircon U-Th-Pb Depth Profiles from Eucrite Meteorites and Lunar Impact Breccias
- J. P. Greenwood, S. Itoh, N. Sakamoto, P. H. Warren, L. A. Taylor, H. Yurimoto Towards a Wetter Moon: Implications of High Volatile Abundances in Lunar Apatite
- A. Morschhauser, M. Grott, V. Lesur A New Model of the Lithospheric Field of Mars Using MGS-MPO Data and L1-Regularization
- M. C. De Sanctis, A. Nathues, E. Ammannito, F. Capaccioni, A. Frigeri, L. Le Corre, R. Jauman, E. Palomba, C. M. Pieters, V. Reddy, K. Stephan, F. Tosi, A. Yingst, F. Zambon, M. A. Barucci, D. T. Blewett, M. T. Capria, J.-Ph. Combe, B. W. Denevi, H. U. Keller, S. Marchi, T. B. McCord, L A. McFadden, H. McSween, C. A. Raymond, C. T. Russell, J. Sunshine, M. Toplis, J. Y. Li First Mineralogical Maps of 4 Vesta
- K. Krohn, R. Jaumann, K. Stephan, C. M. Pieters, R. Wagner, R. A. Yingst, D. A. Williams, P. Schenk, G. Neukum, N. Schmedemann, T. Kneissl, M. C. De Sanctis, A. Nathues, D. L. Buczkowski, T. Roatsch, F. Preusker, E. Kersten, C. T. Russell, C. A. Raymond Geologic Mapping of the Av-12 Sextlia Quadrangle of Asteroid 4 Vesta
- J. Watkins, A. Yin Spatial and Temporal Relationships of Landslides in Valles Marineris, Mars: Constraints on Their Triggering Mechanisms
- D. W. Mittlefehldt, J.-Y. Li, C. M. Pieters, M. C. De Sanctis, S. E. Schroder, H. Hiesinger, D. T. Blewett, C. T. Russell, C. A. Raymond, R. A. Yingst, Dawn Science TeamTypes and Distribution of Bright Materials on 4 Vesta
- D. L. Domingue, F. Vilas, P. M. Travnicek, M. Benna, D. Schriver, M. Sarantos A Search for Latitudinal Variation in Space Weathering on Mercury’s Surface
- C. A. Crow, K. D. McKeegan, J. D. Gilmour, S. A. Crowther, D. J. Taylor Are Apollo Zircons Witness to a Lunar Cataclysm?
- K. D. Runyon, D. M. Blair, M. Lemelin, D. Nowka, C. E. Roberts, D. A. Paige, P. Spudis, D. A. Kring Volatiles at the Lunar South Pole: A Case Study for a Mission to Amundsen Crater
- C. E. Roberts, D. M. Blair, M. Lemelin, D. Nowka, K. D. Runyon, D. A. Paige, P. D. Spudis, D. A. Kring The Potential for Volatiles in the Intercrater Highlands of the Lunar North Pole
- T. B. McCord, J.-Ph. Combe, R. Jaumann, E. Palomba, V. Reddy, D. T. Blewett, H. Y. McSween Jr., C. A. Raymond, D. Williams, Dawn Team Dark Material on Vesta: Synthesis and Interpretations from Dawn Observations
- A. Yin High Mantle Viscosity Controls the Enormous Size of Martian Volcanoes: A Hypothesis Based on Inferences from Rayleigh-Taylor Instability Theory