J. Graham

Publications476
h-index64
Citations15,693
Highly Influential Citations1,633
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Design and development of NIRSPEC: a near-infrared echelle spectrograph for the Keck II telescope
The design and development of NIRSPEC, a near-IR echelle spectrograph for the Keck II 10-meter telescope is described. This instrument is a large, facility-class vacuum-cryogenic spectrometer with a…
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A planetary system as the origin of structure in Fomalhaut's dust belt
TLDR
The sharp inner edge and offset demonstrate the presence of planetary-mass objects orbiting Fomalhaut, demonstrating the structure of a dusty disk modified by the gravitational influence of planets.
View on Nature
Optical Images of an Exosolar Planet 25 Light-Years from Earth
TLDR
Optical observations of an exoplanet candidate, Fomalhaut b, show that the planet's mass is at most three times that of Jupiter; a higher mass would lead to gravitational disruption of the belt, matching predictions of its location.
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Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies
TLDR
NGC 3842, the brightest galaxy in a cluster at a distance from Earth of 98 megaparsecs, has a central black hole with a mass of 9.7 billion solar masses, and that a black hole of comparable or greater mass is present in NGC 4889, the bright galaxy in the Coma cluster.
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The Gemini Deep Planet Survey
We present the results of the Gemini Deep Planet Survey, a near-infrared adaptive optics search for giant planets and brown dwarfs around 85 nearby young stars. The observations were obtained with…
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Massive Stars in the Arches Cluster
We present and use new spectra and narrowband images, along with previously published broadband images, of stars in the Arches cluster to extract photometry, astrometry, equivalent width, and…
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The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XIII. The Metallicity Dependence of the Cepheid Distance Scale
Uncertainty in the metal-abundance dependence of the Cepheid variable period-luminosity (PL) relation remains one of the outstanding sources of systematic error in the extragalactic distance scale…
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Observations of a z = 1.44 Dusty, Ultraluminous Galaxy and Implications for Deep Submillimeter Surveys* ** ***
We present new near-infrared and optical spectroscopic observations that confirm the redshift of the z = 1.44 extremely red object ERO J164502+4626.4 (object 10 of Hu & Ridgway, formerly known as HR…
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FOMALHAUT'S DEBRIS DISK AND PLANET: CONSTRAINING THE MASS OF FOMALHAUT B FROM DISK MORPHOLOGY
Following the optical imaging of exoplanet candidate Fomalhaut b (Fom b), we present a numerical model of how Fomalhaut's debris disk is gravitationally shaped by a single interior planet. The model…
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The Redshift of an Extremely Red Object and the Nature of the Very Red Galaxy Population
Infrared surveys have discovered a significant population of bright (K 19) extremely red (R—K 6) objects. Little is known about the properties of these objects on account of their optical faintness…
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