First millimeter mapping of the jet and nucleus of M 87.

Details First millimeter mapping of the jet and nucleus of M 87. First millimeter mapping of the jet and nucleus of M 87.

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...309..375d&link_type=abstract

Astronomy and Astrophysics, v.309, p.375-380

Astronomy and Astrophysics

Astrophysics

16

Galaxies: Individual: M 87, Galaxies: Jets, Radio Continuum: Galaxies, Galaxies: Ism

Scientific paper

Observations of M 87 at 89GHz (3.4mm) with the IRAM Plateau de Bure interferometer are presented. This is the first image of an extragalactic jet at this frequency with such a resolution (2.9"x1.8"). Knots A, B, C and G in the jet are clearly seen. The photometry of the knots reveals that, within the error bars, the millimetric intensity is that expected from a linear interpolation between the radio and optical values. An extended feature of about 13"x7" appears around the nucleus, which we were not able to attribute to an artifact. It is elongated perpendicular to the jet and its off-centering from the nucleus is symmetric to that of the well known Halpha_ emission-line features in M 87. If interpreted as very cold gas (T<~10K), this extended structure would then have a total mass of =~10^12^Msun_.

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