60 milliarcsecond near-infrared imaging of 3C 273 with Altair and Gemini

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DOIResolve DOI: http://doi.org/10.1086/381507
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TypeArticle
Journal titlePublications of the Astronomical Society of the Pacific
Volume116
Issue816
Pages154160; # of pages: 7
AbstractWe report data from the commissioning run of the Altair adaptive optics instrument on Gemini North. The bright QSO 3C 273 was observed at f/32 in the H and J bands, and at f/14 with J band, using the QSO itself as guide star. Resolution of approximately 60 mas full width at half-maximum (FWHM) was achieved in H band. The data and point-spread function are compared with those from the Hubble Space Telescope (HST). The Altair data allow a measurement of the spheroidal inner host galaxy to radii down to about 40 mas. A bright knot seen in visible wavelengths with the Advanced Camera for Surveys (ACS) instrument on HST is seen in the J but not the H band, and the dust lane seen with ACS is less visible, as expected. Other morphological features, and the jet, are discussed.
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AffiliationNational Research Council Canada; NRC Herzberg Institute of Astrophysics
Peer reviewedNo
NPARC number9723450
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Record identifier0ec70712-30f4-434e-bebd-f4e0c3b4505a
Record created2009-07-17
Record modified2016-05-09
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