Asset Details

MbrlCatalogueTitleDetail

Do you wish to reserve the book?

Discovery of a Hypervelocity L Subdwarf at the Star/Brown Dwarf Mass Limit

by Rothermich, Austin , Caselden, Dan , Faherty, Jacqueline K , Schneider, Adam C , Burgasser, Adam J , Casewell, Sarah L , Kremer, Kyle , Bickle, Thomas P , Brooks, Hunter , Kuchner, Marc J , Gerasimov, Roman , Theissen, Christopher A , Planet 9 Collaboration , Kabatnik, Martin , Meisner, Aaron M , J Davy Kirkpatrick , the Backyard Worlds , Softich, Emma , Karpoor, Preethi , Alvarado, Efrain

in Acceleration / Binary stars / Black holes / Brown dwarf stars / Companion stars / Escape velocity / Globular clusters / Hypervelocity / Kinematics / Low mass stars / Milky Way / Radial velocity / Subdwarf stars / Velocity / White dwarf stars

2024

Yes Please

Hey, we have placed the reservation for you!

By the way, why not check out events that you can attend while you pick your title.

Oops! Something went wrong.

Looks like we were not able to place the reservation. Kindly try again later.

Are you sure you want to remove the book from the shelf?

Discovery of a Hypervelocity L Subdwarf at the Star/Brown Dwarf Mass Limit

2024

Confirm

Do you wish to request the book?

Discovery of a Hypervelocity L Subdwarf at the Star/Brown Dwarf Mass Limit

2024

Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy

How would you like to get it?

Submit

We have requested the book for you!

Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.

Oops! Something went wrong.

Looks like we were not able to place your request. Kindly try again later.

Paper

Discovery of a Hypervelocity L Subdwarf at the Star/Brown Dwarf Mass Limit

Rothermich, Austin,

Caselden, Dan,

Faherty, Jacqueline K,

Schneider, Adam C,

Burgasser, Adam J,

Casewell, Sarah L,

Kremer, Kyle,

Bickle, Thomas P,

Brooks, Hunter,

Kuchner, Marc J,

Gerasimov, Roman,

Theissen, Christopher A,

Planet 9 Collaboration,

Kabatnik, Martin,

Meisner, Aaron M,

J Davy Kirkpatrick,

the Backyard Worlds,

Softich, Emma,

Karpoor, Preethi,

Alvarado, Efrain

2024

Overview

We report the discovery of a high velocity, very low-mass star or brown dwarf whose kinematics suggest it is unbound to the Milky Way. CWISE J124909.08+362116.0 was identified by citizen scientists in the Backyard Worlds: Planet 9 program as a high proper motion (\\(\\) \\(=\\) 0''9/yr) faint red source. Moderate resolution spectroscopy with Keck/NIRES reveals it to be a metal-poor early L subdwarf with a large radial velocity (\\(-\\)103\\(\\)10 km/s), and its estimated distance of 125\\(\\)8 pc yields a speed of 456\\(\\)27 km/s in the Galactic rest frame, near the local escape velocity for the Milky Way. We explore several potential scenarios for the origin of this source, including ejection from the Galactic center \\(\\)3 Gyr in the past, survival as the mass donor companion to an exploded white dwarf. acceleration through a three-body interaction with a black hole binary in a globular cluster, and accretion from a Milky Way satellite system. CWISE J1249+3621 is the first hypervelocity very low mass star or brown dwarf to be found, and the nearest of all such systems. It may represent a broader population of very high velocity, low-mass objects that have undergone extreme accelerations.

Share this book

Add to My Shelf

Publisher

Cornell University Library, arXiv.org

Subject