The Youngest Planets and their Host Stars - Ann Marie Cody(SETI Talks 2016)
Δημοσιεύτηκε στις 16 Σεπ 2016
Thanks
to numerous ground and space-based surveys, we are now aware of over
3300 planets orbiting other stars, with another nearly 2500 candidates
from the Kepler Mission awaiting confirmation. The Universe is teeming
with rocky and gaseous bodies. How did these planet systems form and
evolve toward their present configurations? The answer to this question
lies in the study of young planets and their formation environments. In
this talk I will show how high-precision time series data from space
telescopes is beginning to illuminate the conditions surrounding planet
formation and the star-disk connection. Progress is being made on two
fronts. First, high cadence photometry of accreting young stars is
revealing the structure of inner circumstellar disks on spatial scales
inaccessible to direct imaging. In some cases, we are able to observe
occultations by coherent dust clumps which may be the precursors to
planetesimals. Second, the onset of the K2 mission is enabling an
unprecedented search for exoplanets at ages of a few to 100 million
years. I will present a selection of exquisite photometric time series
from several recent campaigns, highlighting the case of K2-33b, a
recently discovered transiting planet around a newborn star in the Upper
Scorpius region.
to numerous ground and space-based surveys, we are now aware of over
3300 planets orbiting other stars, with another nearly 2500 candidates
from the Kepler Mission awaiting confirmation. The Universe is teeming
with rocky and gaseous bodies. How did these planet systems form and
evolve toward their present configurations? The answer to this question
lies in the study of young planets and their formation environments. In
this talk I will show how high-precision time series data from space
telescopes is beginning to illuminate the conditions surrounding planet
formation and the star-disk connection. Progress is being made on two
fronts. First, high cadence photometry of accreting young stars is
revealing the structure of inner circumstellar disks on spatial scales
inaccessible to direct imaging. In some cases, we are able to observe
occultations by coherent dust clumps which may be the precursors to
planetesimals. Second, the onset of the K2 mission is enabling an
unprecedented search for exoplanets at ages of a few to 100 million
years. I will present a selection of exquisite photometric time series
from several recent campaigns, highlighting the case of K2-33b, a
recently discovered transiting planet around a newborn star in the Upper
Scorpius region.
Κατηγορία
Άδεια
- Τυπική άδεια YouTube
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου