2010A&A...513A..33M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST22:02:06

2010A&A...513A..33M - Astronomy and Astrophysics, volume 513, A33-33 (2010/4-1)

The activity of comet C/2007 D1 (LINEAR) at 9.7 AU from the Sun.

MAZZOTTA EPIFANI E., DALL'ORA M., DI FABRIZIO L., LICANDRO J., PALUMBO P. and COLANGELI L.

Abstract (from CDS):

We report on the unusual distant activity of the dynamically new comet C/2007 D1 (LINEAR), observed at rh=9.7AU post-perihelion. This comet is particularly interesting because of its quite large perihelion distance (rq=8.8AU). We analyse V and R band images taken at the TNG telescope to characterise the dust coma of the comet and investigate its photometry, colours, and dust production. The colour of the dust is redder than the Sun (V-R=0.505±0.093 at the photometric aperture of radius 2.2''). The Afρ value is measured to be 1983±81cm for an aperture of radius =2.2''. An upper limit to the cometary nucleus radius of aN≤18km is derived. A dust mass-loss rate of (dMd)/(dt)=5.3x102kg/s is measured, which implies that C/2007 D1 (LINEAR) is a very active comet despite its quite large perihelion distance.

Abstract Copyright:

Journal keyword(s): comets: individual: glutag{Viz.comet "C/2007 D1"|C/2007 D1 (LINEAR)}

CDS comments: A E + corrigendum vol. 524 , C1

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2020.07.14-22:02:06

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