Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

High-speed photometry of the disintegrating planetesimals at wd1145+017 : evidence for rapid dynamical evolution

Tools
- Tools
+ Tools

Gänsicke, B. T. (Boris T.), Aungwerojwit, A., Marsh, Tom, Dhillon, V. S., Sahman, D. I., Veras, Dimitri, Farihi, J., Chote, Paul, Ashley, R., Arjyotha, S., Rattanasoon, S., Littlefair, S. P., Pollacco, Don and Burleigh, Matthew R. (2016) High-speed photometry of the disintegrating planetesimals at wd1145+017 : evidence for rapid dynamical evolution. The Astrophysical Journal Letters, 818 (1). pp. 1-6. L7. doi:10.3847/2041-8205/818/1/L7

[img]
Preview
PDF
WRAP_1273265-px-080416-gaensicke.pdf - Published Version - Requires a PDF viewer.

Download (1149Kb) | Preview
Official URL: http://dx.doi.org/10.3847/2041-8205/818/1/L7

Request Changes to record.

Abstract

We obtained high-speed photometry of the disintegrating planetesimals orbiting the white dwarf WD 1145+017, spanning a period of four weeks. The light curves show a dramatic evolution of the system since the first observations obtained about seven months ago. Multiple transit events are detected in every light curve, which have varying durations (sime3–12 minutes) and depths (sime10%–60%). The time-averaged extinction is sime11%, much higher than at the time of the Kepler observations. The shortest-duration transits require that the occulting cloud of debris has a few times the size of the white dwarf, longer events are often resolved into the superposition of several individual transits. The transits evolve on timescales of days, both in shape and in depth, with most of them gradually appearing and disappearing over the course of the observing campaign. Several transits can be tracked across multiple nights, all of them recur on periods of sime4.49 hr, indicating multiple planetary debris fragments on nearly identical orbits. Identifying the specific origin of these bodies within this planetary system, and the evolution leading to their current orbits remains a challenging problem.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Planetary systems, Asteroids, Light curves
Journal or Publication Title: The Astrophysical Journal Letters
Publisher: Institute of Physics Publishing, Inc.
ISSN: 0004-637X
Official Date: 3 February 2016
Dates:
DateEvent
3 February 2016Published
9 January 2016Accepted
30 December 2015Submitted
Volume: 818
Number: 1
Number of Pages: 6
Page Range: pp. 1-6
Article Number: L7
DOI: 10.3847/2041-8205/818/1/L7
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: European Research Council (ERC), Seventh Framework Programme (European Commission) (FP7), Samnakngān Kō̜ngthun Sanapsanun Kānwičhai‏ [Thailand Research Fund], Thailand. Samnakngān Khana Kammakān Wičhai hǣng Chāt [National Research Council of Thailand], Royal Society (Great Britain), Leverhulme Trust (LT), Science and Technology Facilities Council (Great Britain) (STFC)
Grant number: 320964 (ERC), MRG5680152 (SKSK), R2559B034 (SKKWgC), ST/L000733/1 (STFC)
Adapted As:

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics

twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us