Prospecting for brown dwarfs in Space Infrared Telescope Facility (SIRTF) legacy science datasets
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SIRTF legacy brown dwarfs↗
Engineering topics
Lonsdale, C.
Publications and source records attributed to Lonsdale, C..
The on-line science information services (OASIS) as an enabling technology for visual cross comparisons between multiple data sets
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OASIS visual cross comparisons multiple data sets↗
SWIRE: The SIRTF wide-area infrared extragalactic survey
SWIRE is a wide-area, high latitude, imaging survey to be undertaken with SIRTF to trace the evolution of dusty, star-forming galaxies, evolved stellar populations, and AGN, as a function of environment from z~2.5 to the current epoch. Building on ISO's heritage, SWIRE complements smaller, deeper SIRTF GTO (Guaranteed Time Obeserver) surveys, and paves the way for the Herschel (FIRST) observatory to be launched in 2007.
SWIRE imaging survey, star-forming galaxies, galax↗
A new complete sample of submillijansky radio sources: An optical and near-infrared study
The Very Large Array has been used in C configuration to map an area similar or equal to 0.3 deg(2) at 1.4 GHz with 5 sigma sensitivities of 0.305, 0.325, 0.380, and 0.450 mJy beam(-1)over four equal subareas.
Star formation historyluminosity function galaxies↗
Attitude Control System and Star Tracker Performance of the Wide-Field Infrared Explorer Spacecraft
The Wide-Field Infrared Explorer (WIRE) spacecraft was launched into sunsynchronous orbit on March 4, 1999.
attitude↗
The ISO-IRAS Faint Galaxy Survey: ISOCAM Results
The ISO-IRAS Faint Galaxy Survey (IIFGS) is a program designed to produce one of the largest and deepest samples of luminous galaxies possible with present facilities.
galaxies infrared ISO IRAS↗
Galaxy Evolution: IR and Sub-mm Perspectives
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galaxies evolution infrared↗
The Discovery of a Low Redshift, Red Quasar in the 2MASS Prototype Survey
A prototype camera designed to test the observing and data reductions techniques for the 2 Miron All Sky Survey (2MASS) has been used to search for extremely red objects.
infrared↗
Spatially Compact OH Megamasers in Arp 220 and the Nature of the Central Energy Source
Arp 220 is the prototypical luminous IR galaxy, and has been the focal point of much debate on the origin, starburst or obscured quasar of the high luminosity of the objects.
maser energetics dense molecular torus obscured qu↗
Ultraluminous Infrared Galaxies and the Radio-Optical Correlation for Quasars
Through analysis of available optical spectrophotometric data and radio flux density measurements in the literature, it is demonstrated that a good correlation exists between the radio power and bolometric luminosity of the optically-selected QSOs in the Bright Quasar Sample of Schmidt and Green.
quasars↗
Simulations of Deep Optical and Near Infrared Extragalactic Counts
Monte-Carlo simulations of three dimensional galaxy distributions are performed, following the prescription of Chokshi and Wright(1988), to study the photometric properties of evolving galaxy populations in the optical and near infrared bands to high redshifts.
faint galaxies galaxy evolution↗
Evolving starburst galaxies, faint number counts, and the 2 keV background
Blue and 60 micron extragalactic number counts and redshift distributions are modeled using evolutionary models in which galaxies periodically undergo transient starburst events. Support is found for the hypothesis that the same starburst phenomenon is responsible for the excess source counts seen at both wavelengths, though observed at lower mean redshift in the far infrared than in the blue. The soft X-ray emission from these evolving starburst events is not likely to exceed the 2 keV background unless the evolutionary rate is greater than (1 + z)-cubed (luminosity or density evolution) and the redshift of galaxy formation is greater than about five.
Lonsdale, C.↗