AAS NOVA — Research Highlights 2019

Find out the latest thinking about our universe.
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Possibly Impossible Planets

Post by bystander » Sun Oct 13, 2019 3:12 pm

Possibly Impossible Planets
NOVA | American Astronomical Society | 2019 Oct 11
Tarini Konchady wrote:
Knowing which planets can form will help us understand how planets form. So as we discover more and more exoplanets, one must wonder: what if there are certain types of planets that just don’t exist? ...

A Gap in the Mass Distribution for Warm Neptune and Terrestrial Planets ~ David J. Armstrong ​et al
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Tracking Gas in Star-Forming Galaxies

Post by bystander » Thu Oct 24, 2019 3:20 pm

Tracking Gas in Star-Forming Galaxies
NOVA | American Astronomical Society | 2019 Oct 14
Susanna Kohler wrote:
How has galaxy evolution changed over our universe’s history? To understand this, we need to track galaxies’ stars and gas over time. Stars are relatively easy: they’re bright and can be observed with deep optical and infrared observations. But gas? That’s a little trickier. ...

Atomic Hydrogen in Star-forming Galaxies at Intermediate Redshifts ~ Apurba Bera et al
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The Big Picture of Solar Flares

Post by bystander » Thu Oct 24, 2019 3:25 pm

The Big Picture of Solar Flares
NOVA | American Astronomical Society | 2019 Oct 16
Susanna Kohler wrote:
Bright eruptions from the Sun’s surface can influence everything from the Sun’s own atmosphere to the Earth and beyond. The good news: we’ve got decades of detailed observations of solar flares available for study. The bad news: we may be interpreting these data incorrectly. ...

Solar Flare Distributions: Lognormal Instead of Power Law? ~ Cis Verbeeck et al
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Snowball Events for Tidally Locked Planets?

Post by bystander » Thu Oct 24, 2019 3:34 pm

Snowball Events for Tidally Locked Planets?
NOVA | American Astronomical Society | 2019 Oct 23
Susanna Kohler wrote:
The Earth likely underwent several periods of planet-wide ice coverage in the past, in what’s known as snowball Earth events. A new study explores whether snowball events are also a risk for tidally locked, habitable exoplanets. ...

No Snowball on Habitable Tidally Locked Planets with a Dynamic Ocean ~ Jade H. Checlair et al
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When Neutron Stars Merge

Post by bystander » Sat Oct 26, 2019 5:20 am

When Neutron Stars Merge
NOVA | American Astronomical Society | 2019 Oct 25
Tarini Konchady wrote:
To predict how often binary neutron star mergers occur, we need to know when binary neutron stars are born and how long it takes them to merge. An avenue for understanding this is to carefully study their host galaxies. ...

Measuring the Delay Time Distribution of Binary Neutron Stars. III.
Using the Individual Star Formation Histories of Gravitational-Wave
Event Host Galaxies in the Local Universe
~ Mohammadtaher Safarzadeh et al
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Life on the Red Edge

Post by bystander » Fri Nov 01, 2019 3:21 pm

Life on the Red Edge
NOVA | American Astronomical Society | 2019 Oct 28
Tarini Konchady wrote:
How can we identify life on other planets? The Earth might be able to help with that — specifically with something called the red edge. ...

Expanding the Timeline for Earth’s Photosynthetic Red Edge Biosignature ~ Jack T. O'Malley-James, Lisa Kaltenegger
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Lessons from a Quartet of Newborn Planets

Post by bystander » Thu Nov 07, 2019 5:18 pm

Lessons from a Quartet of Newborn Planets
NOVA | American Astronomical Society | 2019 Nov 06
Susanna Kohler wrote:
Though we’ve discovered thousands of planets beyond our solar system, we still have a lot to learn about how these bodies form and evolve. Now, a newly discovered baby planetary system may provide some insight. ...

Four Newborn Planets Transiting the Young Solar Analog V1298 Tau ~ Trevor J. David et al
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A Standard of Black Hole Mergers

Post by bystander » Mon Nov 11, 2019 8:00 pm

A Standard of Black Hole Mergers
NOVA | American Astronomical Society | 2019 Nov 08
Tarini Konchady wrote:
Being able to make precise measurements of distances and redshifts will help us understand how the universe is evolving. With the advent of gravitational wave observatories, we can make these measurements by using black holes in a very different way than before. ...

A Future Percent-Level Measurement of the Hubble Expansion
at Redshift 0.8 with Advanced LIGO
~ Will M. Farr et al
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A New Measurement of Turbulence

Post by bystander » Mon Nov 11, 2019 8:09 pm

A New Measurement of Turbulence
NOVA | American Astronomical Society | 2019 Nov 11
Susanna Kohler wrote:
The same physical phenomenon that causes bumpy airplane rides also pervades our universe, jumbling stellar atmospheres, interstellar clouds, and even the magnetized sheath surrounding the Earth. Now, a new study brings us a little closer to understanding turbulence. ...

Direct Measurement of the Dissipation Rate Spectrum around Ion Kinetic Scales in Space Plasma Turbulence ~ Jiansen He et al
Know the quiet place within your heart and touch the rainbow of possibility; be
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