An Upper Limit to the Mass of rho1 Cnc's Radial Velocity Companion

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dc.creatorMcGrath, Melissa A.
dc.creatorNelan, Edmund
dc.creatorBlack, David C.
dc.creatorGatewood, George
dc.creatorNoll, Keith
dc.creatorSchultz, Al
dc.creatorLubow, Stephen
dc.creatorHan, Inwoo
dc.creatorStepinski, Tomasz F.
dc.creatorTargett, Thomas
dc.date2001-12-03
dc.date.accessioned2026-07-07T02:01:38Z
dc.date.available2026-07-07T02:01:38Z
dc.descriptionDoppler spectroscopy of rho1 Cnc has detected evidence of a companion with an orbital period of 14.65 days and a minimum mass of 0.88 Jupiter masses. Astrometric observations performed with the Hubble Space Telescope Fine Guidance Sensor 1r using a novel new observing technique have placed an upper limit on the astrometric reflex motion of rho1 Cnc in a time period of only one month. These observations detected no reflex motion induced by the 14.65 day period radial velocity companion, allowing us to place a 3-sigma upper limit of \~0.3 milliarcseconds on the semi-major axis of this motion, ruling out the preliminary Hipparcos value of 1.15 milliarcseconds. The corresponding upper limit on the true mass of the companion is ~30 Mj, confirming that it is a sub-stellar object.
dc.description7 pages, 2 figures, 1 table
dc.identifierhttps://arxiv.org/abs/astro-ph/0112036
dc.identifierhttp://arxiv.org/abs/astro-ph/0112036
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3824
dc.subjectAstrophysics
dc.titleAn Upper Limit to the Mass of rho1 Cnc's Radial Velocity Companion
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