The initial mass function in the Rho Ophiuchi cluster

Details The initial mass function in the Rho Ophiuchi cluster The initial mass function in the Rho Ophiuchi cluster

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339l..71r&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 339, April 15, 1989, p. L71-L74. Research supported by NSF.

Astronomy and Astrophysics

Astrophysics

34

Infrared Spectra, Ophiuchi Clouds, Star Formation, Stellar Mass, Main Sequence Stars, Stellar Luminosity, Stellar Magnitude

Scientific paper

Approximately 20 sq arcmin in the Rho Ophiuchi cloud were imaged deeply at 2.2 microns. No new sources were found down to a completeness limit of m(k) = 14.5. Either the low-mass sources have radically different infrared spectra than higher mass ones, or the initial mass function levels out or turns over near a few tenths of a solar mass, and the formation of very low mass stars and substellar objects is suppressed. If this later results is true generally, large substellar objects cannot contribute significantly to the 'missing mass'.

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