Calendar

Apr
24
Mon
Planetary Group meeting
Apr 24 @ 2:30 pm – 3:30 pm
Jun
27
Tue
Colloquium PhD Defense: Laura Mayorga
Jun 27 @ 2:30 pm – 3:30 pm
Colloquium PhD Defense: Laura Mayorga @ Domenici Hall 102

The Orbital and Planetary Phase Variations of Jupiter-Sized Planets: Characterizing Present and Future Giants

Laura Mayorga, NMSU

It is commonly said that exoplanet science is 100 years behind planetary science. While we may be able to travel to an exoplanet in the future, inferring the properties of exoplanets currently relies on extracting as much information as possible from a limited dataset. In order to further our ability to characterize, classify, and understand exoplanets as both a population and as individuals, this thesis makes use of multiple types of observations and simulations.

Firstly, direct-imaging is a technique long used in planetary science and is only now becoming feasible for exoplanet characterization. We present our results from analyzing Jupiter’s phase curve with Cassini/ISS to instruct the community in the complexity of exoplanet atmospheres and the need for further model development. The planet yields from future missions may be overestimated by today’s models. We also discuss the need for optimal bandpasses to best differentiate between planet classes.

Secondly, photometric surveys are still the best way of conducting population surveys of exoplanets. In particular, the Kepler dataset remains one of the highest precision photometric datasets and many planetary candidates remain to be characterized. We present techniques by which more information, such as a planet’s mass, can be extracted from a transit light curve without expensive ground- or space-based follow-up observations.

Finally, radial-velocity observations have revealed that many of the larger “planets” may actually be brown dwarfs. To understand the distinction between a brown dwarf and an exoplanet or a star, we have developed a simple, semi-analytic viscous disk model to study brown dwarf evolutionary history. We present the rudimentary framework and discuss its performance compared to more detailed numerical simulations as well as how additional physics and development can determine the potential observational characteristics that will differentiate between various formation scenarios.

Exoplanet science has already uncovered a plethora of previously unconsidered phenomenon. To increase our understanding of our own planet, as well as the other various possible end cases, will require a closer inspection of our own solar system, the nuanced details of exoplanet data, refined simulations, and laboratory astrophysics.

Sep
8
Fri
Planetary Group meeting
Sep 8 @ 10:30 am – 11:30 am
Sep
22
Fri
Planetary Group meeting
Sep 22 @ 10:30 am – 11:30 am
Oct
6
Fri
Planetary Group meeting
Oct 6 @ 10:30 am – 11:30 am
Oct
16
Mon
Pizza Lunch: Ken Naiff
Oct 16 @ 12:30 pm – 1:30 pm
Pizza Lunch: Ken Naiff @ AY 119

Dark Sky Images

Ken Naiff

Ken, an retired engineer, is a highly technically skilled and artistic
astrophotographer.  He will be sharing some of his work and elaborating on
the technical methods and processing techniques he applies to obtain his
unique and enhanced images.  You can see Ken’s work at:

https://darkskyimagesbyken.com/products

 

Oct
20
Fri
Planetary Group meeting
Oct 20 @ 10:30 am – 11:30 am
Nov
3
Fri
Planetary Group meeting
Nov 3 @ 10:30 am – 11:30 am
Nov
17
Fri
Planetary Group meeting
Nov 17 @ 10:30 am – 11:30 am
Feb
12
Mon
Planetary Group meeting
Feb 12 @ 3:00 pm – 4:00 pm