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Spitzer/IRAC and JHKs Observations of h & chi Persei: Constraints on Protoplanetary Disk and Massive Cluster Evolution at ~ 10^{7} yr
Thayne Currie, Zoltan Balog, S. J. Kenyon +12
We describe IRAC 3.6-8 mu_m observations and ground-based near-IR JHKs photometry from Mimir and 2MASS of the massive double cluster h & chi Persei complete to J=15.5 (M ~ 1.3 Msun…
UBVRI Light Curves of 44 Type Ia Supernovae
Saurabh Jha, Robert P. Kirshner, Peter Challis +2
We present UBVRI photometry of 44 type-Ia supernovae (SN Ia) observed from 1997 to 2001 as part of a continuing monitoring campaign at the Fred Lawrence Whipple Observatory of the…
In-flight performance and calibration of the Infrared Array Camera (IRAC) for the Spitzer Space Telescope
J. L. Hora, the IRAC team
The Infrared Array Camera (IRAC) is one of three focal plane instruments on board the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broad-band im…
The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
G. G. Fazio, the IRAC team
The Infrared Array Camera (IRAC) is one of three focal plane instruments in the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broad-band images a…
Number Counts At 3 < lambda < 10 um From the Spitzer Space Telescope
G. G. Fazio, M. L. N. Ashby, P. Barmby +12
Infrared source counts at wavelengths 3 < lambda < 10 um cover more than 10 magnitudes in source brightness, four orders of magnitude in surface density, and reach an integrated su…
Near and mid-infrared colours of star-forming galaxies in ELAIS fields
P. Vaisanen, T. Morel, M. Rowan-Robinson +6
We present J and K-band near-infrared photometry of a sample of mid-infrared sources detected by the Infrared Space Observatory (ISO) as part of the European Large Area ISO-Survey…
Infrared L Band Observations of the Trapezium Cluster: A Census of Circumstellar Disks and Candidate Protostars
Charles J. Lada, August A. Muench, Karl E. Haisch +4
We report the results of a sensitive near-infrared JHKL imaging survey of the Trapezium cluster in Orion. We use the JHKL colors to obtain a census of infrared excess stars in the…
Wide-field J- and K-band galaxy counts in the ELAIS fields
P. Vaisanen, E. V. Tollestrup, S. P. Willner +1
New near-infrared galaxy counts in the J and K bands are presented over a total area of 0.70 and 0.97 degrees^2, respectively. The limiting magnitudes of the deepest regions are 19…
Power Law Decays in the Optical Counterparts of GRB 970228 and GRB970508
M. R. Garcia, P. J. Callanan, D. Moraru +7
We report on R_c and K band observations of the optical counterpart to GRB 970508 with the Fred Lawrence Whipple Observatory (FLWO) 1.2m telescope. Eleven R_c-band observations wer…