281,912 research outputs found
Geology and cratering history of Ariel
The surface of Ariel imaged by Voyager 2 can be divided into several types of terrain on the basis of morphology: cratered terrain, subdued terrain, ridged terrain, and plains. Crater statistics were compiled for each of the terrain types. Despite differing morphology, the various terrains on Ariel do not exhibit large variations in crater frequency. None of the observed surfaces on Ariel record the period of accretion. It seems that conditions appropriate for resurfacing could have occurred during the early history of Ariel
Ariel - Volume 9 Number 3
Executive Editor
Emily Wofford
Business Manager
Fredric Jay Matlin
University News
John Patrick Welch
World News
George Robert Coar
Editorials Editor
Steve Levine
Features
Mark Rubin
Brad Feldstein
Photo
Rick Spaide
Circulation
Victor Onufreiczuk
Lee Wugofski
Graphics and Art
Steve Hulkower
Commons Editor
Brenda Peterso
An Updated Study of Potential Targets for Ariel
Ariel has been selected as ESA's M4 mission for launch in 2028 and is
designed for the characterisation of a large and diverse population of
exoplanetary atmospheres to provide insights into planetary formation and
evolution within our Galaxy. Here we present a study of Ariel's capability to
observe currently-known exoplanets and predicted TESS discoveries. We use the
Ariel Radiometric model (ArielRad) to simulate the instrument performance and
find that ~2000 of these planets have atmospheric signals which could be
characterised by Ariel. This list of potential planets contains a diverse range
of planetary and stellar parameters. From these we select an example Mission
Reference Sample (MRS), comprised of 1000 diverse planets to be completed
within the primary mission life, which is consistent with previous studies. We
also explore the mission capability to perform an in-depth survey into the
atmospheres of smaller planets, which may be enriched or secondary. Earth-sized
planets and Super-Earths with atmospheres heavier than H/He will be more
challenging to observe spectroscopically. However, by studying the time
required to observe ~110 Earth-sized/Super-Earths, we find that Ariel could
have substantial capability for providing in-depth observations of smaller
planets. Trade-offs between the number and type of planets observed will form a
key part of the selection process and this list of planets will continually
evolve with new exoplanet discoveries replacing predicted detections. The Ariel
target list will be constantly updated and the MRS re-selected to ensure
maximum diversity in the population of planets studied during the primary
mission life
Ariel - Volume 9 Number 5
Executive Editor
Seth B. Paul
Associate Editor
Warren J. Ventriglia
Business Manager
Fredric Jay Matlin
University News
John Patrick Welch
World News
George Robert Coar
Editorials Editor
Steve Levine
Features
Mark Rubin
Brad Feldstein
Sports Editor
Eli Saleeby
Photo Editor
Ken Buckwalter
Circulation
Victor Onufreiczuk
Lee Wugofski
Graphics and Art
Steve Hulkower
Commons Editor
Brenda Peterso
Ariel - Volume 4 Number 4
Editors
David A. Jacoby
Eugenia Miller
Tom Williams
Associate Editors
Paul Bialas
Terry Burt
Michael Leo
Gail Tenikat
Editor Emeritus and Business Manager
Richard J. Bonnano
Movie Editor
Robert Breckenridge
Staff
Richard Blutstein
Mary F. Buechler
Meg Brunt
Steve Glinks
Len Grasman
Alice M. Johnson
J.D. Kanofsky
Tom Lehman
Dave Mayer
Bernie Odd
Ariel - Volume 2 Number 7
Editors
Richard J. Bonanno
Robin A. Edwards
Associate Editors
Steven Ager
Stephen Flynn
Shep Dickman
Tom Williams
Lay-out Editor
Eugenia Miller
Contributing Editors
Michael J. Blecker
W. Cherry Light
James J. Nocon
Lynne Porter
Editors Emeritus
Delvyn C. Case, Jr.
Paul M. Fernhof
Ariel - Volume 12 Number 2
Executive Editors
David G. Polin
Larry H. Pastor
Business Manager
Alex Macones
Jean Lien
Editorial Page Editor
Deepak Kapoor
Sports Editor
Todd Hoover
Photography Editors
Lois Leach
Ken Yonemur
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