Session 7: Atomic Physics & Spectroscopy Lecture Series
Monday · 02:00 PM - 03:00 PM
We are pleased to invite you to a Summer Lecture Series on Atomic Physics and Atomic Spectroscopy presented by one of the world’s leading researchers in the field, Dr. Yuri Ralchenko. Please refer to the attached flyer for details. Briefly, the lecture series will cover topics such as:
* atomic structure, radiation, autoionization
* collisions
* spectral line intensities and diagnostics
* line broadening
* atomic databases and online tools
The topics will be covered in a series of 8 one-hour lectures in-person only, no hybrid option. We hope you can attend!
* atomic structure, radiation, autoionization
* collisions
* spectral line intensities and diagnostics
* line broadening
* atomic databases and online tools
The topics will be covered in a series of 8 one-hour lectures in-person only, no hybrid option. We hope you can attend!
ASD Colloquium
Tuesday · 03:45 PM - 04:45 PM
Discovering, Weighing, and Characterizing Giant Exoplanets and Brown Dwarfs
Timothy Brandt (STScI)
Abstract: I will present a combination of three observational techniques—astrometry, radial velocity, and direct imaging—to discover, weigh, and characterize massive exoplanets and brown dwarfs. Only a few exoplanets have both measured masses (from radial velocity and astrometry) and atmospheric properties (inferred from spectra), and these have come at a huge cost in telescope time. By combining recent astrometric measurements from the Gaia satellite with measurements by Hipparcos 35 years ago, we have access to stellar reflex motions that measure the tug of unseen planets and brown dwarfs on their host stars. These reflex motions have been used both to discover new planets and to weigh known planets and brown dwarfs, even some on centuries-long orbits. Recent advances include the first images of the sub-300K planet eps Indi b, discovery of the 3 Jupiter mass planet AF Lep b on a Saturn-like orbit, and the discovery that the first brown dwarf imaged, Gl 229B, is itself a binary. With masses, orbits, and spectra of a growing sample of planets and brown dwarfs, we can build a more complete physical picture of these worlds and connect them to the process of planet formation.
Timothy Brandt (STScI)
Abstract: I will present a combination of three observational techniques—astrometry, radial velocity, and direct imaging—to discover, weigh, and characterize massive exoplanets and brown dwarfs. Only a few exoplanets have both measured masses (from radial velocity and astrometry) and atmospheric properties (inferred from spectra), and these have come at a huge cost in telescope time. By combining recent astrometric measurements from the Gaia satellite with measurements by Hipparcos 35 years ago, we have access to stellar reflex motions that measure the tug of unseen planets and brown dwarfs on their host stars. These reflex motions have been used both to discover new planets and to weigh known planets and brown dwarfs, even some on centuries-long orbits. Recent advances include the first images of the sub-300K planet eps Indi b, discovery of the 3 Jupiter mass planet AF Lep b on a Saturn-like orbit, and the discovery that the first brown dwarf imaged, Gl 229B, is itself a binary. With masses, orbits, and spectra of a growing sample of planets and brown dwarfs, we can build a more complete physical picture of these worlds and connect them to the process of planet formation.
Session 8 Final: Atomic Physics & Spectroscopy Lecture Series
Thursday · 02:00 PM - 03:00 PM
We are pleased to invite you to a Summer Lecture Series on Atomic Physics and Atomic Spectroscopy presented by one of the world’s leading researchers in the field, Dr. Yuri Ralchenko. Please refer to the attached flyer for details. Briefly, the lecture series will cover topics such as:
* atomic structure, radiation, autoionization
* collisions
* spectral line intensities and diagnostics
* line broadening
* atomic databases and online tools
The topics will be covered in a series of 8 one-hour lectures in-person only, no hybrid option. We hope you can attend!
* atomic structure, radiation, autoionization
* collisions
* spectral line intensities and diagnostics
* line broadening
* atomic databases and online tools
The topics will be covered in a series of 8 one-hour lectures in-person only, no hybrid option. We hope you can attend!
Saturday Science at the Visitor Center
Saturday · 01:00 PM - 03:00 PM
Planets Near and Far!
Join us for activities to celebrate NASA science. Registration is not needed for these free, family-friendly events. Call 301-286-8981 for more information.
Join us for activities to celebrate NASA science. Registration is not needed for these free, family-friendly events. Call 301-286-8981 for more information.