Mass limit on Nemesis

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/750

Title:	Mass limit on Nemesis
Authors:	Bhalerao, V Vahia, M. N
Keywords:	Minor planets asteroids - Oort Cloud - Solar system general (stars:) binaries brown dwarfs
Issue Date:	Mar-2005
Publisher:	Astronomical Society of India
Citation:	BASI, Vol. 33, No. 1, pp. 27-33
Abstract:	We assume that if the sun has a companion, it has a period of 27 Myr corresponding to the periodicity seen in cometary impacts on earth. Based on this assumption, it is seen that the inner Lagrangian point of the interaction between the Sun and its companion is in the Oort cloud. From this we calculate the mass ? distance relation for the companion. We then compute the expected apparent magnitude (visible and J band) for the companion using the models of Burrows (1993). We then compare this with the catalogue completeness of optical and infrared catalogues to show that the sun cannot have a companion of mass greater than 44 Mjup (0.042 MO dot ).
URI:	http://hdl.handle.net/2248 /750
Appears in Collections:	BASI Publications

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