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Catalogue POP – Notice individuelle de publication

De Val-Borro Miguel, Rezac Ladislav, Hartogh Paul, Biver Nicolas, Bockelée-Morvan Dominique, Crovisier Jacques, Küppers Michael, Lis Darek C., Szutowicz Slawomira, Blake Geoffrey A., Emprechtinger Martin, Jarchow Christopher, Jehin Emmanuel, Kidger Mark R., Lara Luisa M., Lellouch Emmanuel, Moreno Raphaël, Rengel Miriam

An upper limit for the water outgassing rate of the main-belt comet 176P/LINEAR observed with Herschel/HIFI

Astronomy and Astrophysics, 2012, vol. 546, pp. L4

Référence DOI : 10.1051/0004-6361/201220169
Référence ADS : 2012A&A...546L...4D

Résumé :

176P/LINEAR is a member of the new cometary class known as main-belt comets (MBCs). It displayed cometary activity shortly during its 2005 perihelion passage, which may be driven by the sublimation of subsurface ices. We have therefore searched for emission of the H<SUB>2</SUB>O 1<SUB>10</SUB>-1<SUB>01</SUB> ground state rotational line at 557 GHz toward 176P/LINEAR with the Heterodyne Instrument for the Far Infrared (HIFI) onboard the Herschel Space Observatory on UT 8.78 August 2011, about 40 days after its most recent perihelion passage, when the object was at a heliocentric distance of 2.58 AU. No H<SUB>2</SUB>O line emission was detected in our observations, from which we derive sensitive 3-sigma upper limits for the water production rate and column density of

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