Rotation periods of asteroids using iPTF Virtual Observatory Resource

Authors
  1. Chang C.-K.
  2. Lin H.-W.
  3. Ip W.-H.
  4. Prince T.A.
  5. Kulkarni S.R.
  6. Levitan D.,Laher R.
  7. Surace J.
  8. Published by
    CDS
Abstract

In order to look for large super-fast rotators, in late 2014 and early 2015, five dedicated surveys covering ~188deg^2^ in the ecliptic plane have been carried out in the R-band, with ~10min cadence using the intermediate Palomar Transient Factory. Among 1029 reliable rotation periods obtained from the surveys, we discovered 1 new large super-fast rotator, (40511) 1999 RE88, and 18 other candidates. (40511) 1999 RE88 is an S-type inner main-belt asteroid with a diameter of D=1.9+/-0.3km, a rotation period of P=1.96+/-0.01hr, and a light curve amplitude of {Delta}m~1.0mag. To maintain such fast rotation, an internal cohesive strength of ~780Pa is required. Combining all known large super-fast rotators, their cohesive strengths all fall in the range of 100-1000Pa of lunar regolith. However, the number of large super-fast rotators seems to be far less than the whole asteroid population. This might indicate a peculiar asteroid group for them. Although the detection efficiency for a long rotation period is greatly reduced due to our two-day observation time span, the spin-rate distributions of this work show consistent results with Chang+ (2015, J/ApJS/219/27), after considering the possible observational bias in our surveys. It shows a number decrease with an increase of spin rate for asteroids with a diameter of 3<=D<=15km, and a number drop at a spin rate of f=5rev/day for asteroids with D<=3km.

Keywords
  1. asteroids
  2. surveys
  3. infrared-photometry
  4. visible-astronomy
  5. photometry
Bibliographic source Bibcode
2016ApJS..227...20C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/227/20
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/227/20
Document Object Identifer DOI
doi:10.26093/cds/vizier.22270020

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/227/20
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/227/20
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/227/20
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2017-02-06T10:20:20Z
Resource record created
2017-02-06T10:20:20Z
Created
2017-10-11T05:13:08Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr