Search for the Return of Activity in Active Asteroid 176P/LINEAR
arXiv:1408.4865 · doi:10.1088/0004-6256/147/4/89
Abstract
We present the results of a search for the reactivation of active asteroid 176P/LINEAR during its 2011 perihelion passage using deep optical observations obtained before, during, and after that perihelion passage. Deep composite images of 176P constructed from data obtained between June 2011 and December 2011 show no visible signs of activity, while photometric measurements of the object during this period also show no significant brightness enhancements similar to that observed for 176P between November 2005 and December 2005 when it was previously observed to be active. An azimuthal search for dust emission likewise reveals no evidence for directed emission (i.e., a tail, as was previously observed for 176P), while a one-dimensional surface brightness profile analysis shows no indication of a spherically symmetric coma at any time in 2011. We conclude that 176P did not in fact exhibit activity in 2011, at least not on the level on which it exhibited activity in 2005, and suggest that this could be due to the devolatization or mantling of the active site responsible for its activity in 2005.
17 pages, 9 figures; published in AJ
References in corpus (27)
- The Eighth Data Release of the Sloan Digital Sky Survey: First Data from SDSS-III
- The Pan-STARRS1 Photometric System
- Subaru Prime Focus Camera -- Suprime-Cam --
- The Active Asteroids
- A Comprehensive Study of Gamma-Ray Burst Optical Emission: II. Afterglow Onset and Late Re-Brightening Components
- Hubble Space Telescope Observations of Main Belt Comet (596) Scheila
- A collision in 2009 as the origin of the debris trail of asteroid P/2010 A2
- Collisional Excavation of Asteroid (596) Scheila
- Main-Belt Comet P/2008 R1 (Garradd)
- The Return of Activity in Main-Belt Comet 133P/Elst-Pizarro
- Albedos of Main-Belt Comets 133P/Elst-Pizarro and 176P/LINEAR
- Physical Properties of Main-Belt Comet P/2005 U1 (Read)
- Optical and Dynamical Characterization of Comet-Like Main-Belt Asteroid (596) Scheila
- Discovery of Main-Belt Comet P/2006 VW139 by Pan-STARRS1
- Main-Belt Comet 238P/Read Revisited
- Interpretation of (596) Scheila's Triple Dust Tails
- Observational and Dynamical Characterization of Main-Belt Comet P/2010 R2 (La Sagra)
- Physical Properties of Main-Belt Comet 176P/LINEAR
- Characterization of Active Main Belt Object P/2012 F5 (Gibbs): A Possible Impacted Asteroid
- An upper limit for the water outgassing rate of the main-belt comet 176P/LINEAR observed with Herschel/HIFI
- WISE/NEOWISE observations of Active Bodies in the Main Belt
- RHESSI and TRACE observations of multiple flare activity in AR 10656 and associated filament eruption
- A short-duration event as the cause of dust ejection from Main-Belt Comet P/2012 F5 (Gibbs)
- Water-ice driven activity on Main-Belt Comet P/2010 A2 (LINEAR) ?
- Accretion Disk Temperatures of QSOs: Constraints from the Emission Lines
- Large-scale Magnetic Structure Formation in 3D-MHD Turbulence
- The Nucleus of Main-Belt Comet 259P/Garradd
Cited by in corpus (7)
- The Active Asteroids
- The Main-Belt Comets: The Pan-STARRS1 Perspective
- Asteroid Family Associations of Active Asteroids
- SAFARI: Searching Asteroids For Activity Revealing Indicators
- The Nucleus of Main-Belt Comet P/2010 R2 (La Sagra)
- X-shooter search for outgassing from Main Belt Comet P/2012 T1 (Pan-STARRS)
- The Reactivation and Nucleus Characterization of Main-Belt Comet 358P/PANSTARRS (P/2012 T1)