A spatially resolved study of photoelectric heating and [CII] cooling in the LMC (2008)
Rubin, D., Hony, S., Madden, S. C., Meixner, M., Indebetouw, R., ...
(abridged) We study photoelectric heating throughout the Large Magellanic Cloud. We quantify the importance of the [CII] cooling line and the photoelectric heating process of various environments in...
Trilling, D. E., Mueller, M., Hora, J. L., Fazio, G., Spahr, T., Stansberry, J. A., ...
Near Earth Objects (NEOs) are fragments of remnant primitive bodies that date from the era of Solar System formation. At present, the physical properties and origins of NEOs are poorly understood. We...
Galaxy Clusters in the IRAC Dark Field I: Growth of the red sequence (2008)
Krick, J. E., Surace, J. A., Thompson, D., Ashby, M. L. N., Hora, J. L., Gorjian, V., ...
Using three newly identified galaxy clusters at z~1 (photometric redshift) we measure the evolution of the galaxies within clusters from high redshift to the present day by studying the growth of the...
Spitzer observations of the Massive star forming complex S254-S258: structure and evolution (2008)
Chavarria, L., Allen, L., Hora, J. L., Brunt, C., Fazio, G. G.
We present Spitzer-IRAC, NOAO 2.1meter-Flamingos, Keck-NIRC, and FCRAO-SEQUOIA observations of the massive star forming complex S254-S258, covering an area of 25x20 arc-minutes. Using a combination...
SPITZER SAGE Observations of Large Magellanic Cloud Planetary Nebulae (2007)
Hora, J. L., Cohen, M., Ellis, R. G., Meixner, M., Blum, R. D., Latter, W. B., ...
We present IRAC and MIPS images and photometry of a sample of previously known planetary nebulae (PNe) from the SAGE survey of the Large Magellanic Cloud (LMC) performed with the Spitzer Space...
Campbell, M. F., Sridharan, T. K., Beuther, H., Lacy, J. H., Hora, J. L., Zhu, Q., ...
We present arcsecond-scale mid-ir photometry (in the 10.5 micron N band and at 24.8 microns), and low resolution spectra in the N band (R~100) of a candidate high mass protostellar object (HMPO) in...
IC 4406: a radio-infrared view (2007)
Cerrigone, L., Hora, J. L., Umana, G., Trigilio, C.
IC 4406 is a large (about 100'' x 30'') southern bipolar planetary nebula, composed of two elongated lobes extending from a bright central region, where there is evidence for the presence of a large...
IC 4406: a radio-infrared comparison (2007)
Cerrigone, L., Hora, J. L., Umana, G., Trigilio, C.
IC 4406 is a large (about 100'' x 30'') southern bipolar planetary nebula, composed by two elongated lobes, extending from a bright central region, where there is evidence for the presence of a large...
Radio and Infrared observations of Transition Objects (2007)
Cerrigone, L., Hora, J. L., Umana, G., Trigilio, C.
Observing objects in transition from pre- to young Planetary Nebula (PN), when the central star radiation starts to excite the envelope, can help us to understand the evolution of the circumstellar...
Progressive star formation in the young SMC cluster NGC 602 (2007)
Carlson, Lynn Redding, Sabbi, E., Sirianni, M., Hora, J. L., Nota, A., Meixner, M., ...
NGC 602 is a young stellar cluster located in a peripheral region of the Small Magellanic Cloud known as the wing. Far from the main body of the galaxy and abutting the Magellanic Bridge, the SMC's...
A Combined Spitzer and Chandra Survey of Young Stellar Objects in the Serpens Cloud Core (2007)
Winston, E., Megeath, S. T., Wolk, S. J., Muzerolle, J., Gutermuth, R., Hora, J. L., ...
We present Spitzer and Chandra observations of the nearby (~260 pc) embedded stellar cluster in the Serpens Cloud Core. We observed, using Spitzer's IRAC and MIPS instruments, in six wavelength bands...
Progressive star formation in the young SMC cluster NGC 602 (2007)
Carlson, Lynn Redding, Sabbi, E., Sirianni, M., Hora, J. L., Nota, A., Meixner, M., ...
NGC 602 is a young stellar cluster located in a peripheral region of the Small Magellanic Cloud (SMC) known as the wing. Far from the main body of the galaxy and abutting the Magellanic Bridge, the...
Spitzer/IRAC Characterization of Galactic AGB Stars (2006)
Marengo, M., Hora, J. L., Barmby, P., Willner, S. P., Allen, L. E., Schuster, M. T., ...
The Spitzer Space Telescope and in particular its InfraRed Array Camera (IRAC) is an ideal facility to study the distribution of AGB stars in our own and other galaxies because of its efficiency in...
Discovery of Two T Dwarf Companions with the Spitzer Space Telescope (2006)
Luhman, K. L., Patten, B. M., Marengo, M., Schuster, M. T., Hora, J. L., Ellis, R. G., ...
We report the discovery of T dwarf companions to the nearby stars HN Peg (G0V, 18.4 pc, ~0.3 Gyr) and HD 3651 (K0V, 11.1 pc, ~7 Gyr). During an ongoing survey of 5'x5' fields surrounding stars in the...
Comet 162P/Siding Spring: A Surprisingly Large Nucleus (2006)
Fernandez, Y. R., Campins, H., Kassis, M., Hergenrother, C. W., Binzel, R. P., Licandro, J., ...
We present an analysis of thermal emission from comet 162P/Siding Spring (P/2004 TU12) measured during its discovery apparition in 2004 December. The comet showed no dust coma at this time, so we...
Blum, R. D., Mould, J. R., Olsen, K. A., Frogel, J. A., Werner, M., Meixner, M., ...
Color-magnitude diagrams (CMDs) are presented for the Spitzer SAGE (Surveying the Agents of a Galaxy's Evolution) survey of the Large Magellanic Cloud (LMC). IRAC and MIPS 24 um epoch one data are...
A correlation between pre-main-sequence stellar rotation rates and IRAC excesses in Orion (2006)
Rebull, L. M., Stauffer, J. R., Megeath, S. T., Hora, J. L., Hartmann, L.
Early observations of T Tauri stars suggested that stars with evidence of circumstellar accretion disks rotated slower than stars without such evidence, but more recent results are not as clear....
A Correlation Between Pre-Main Sequence Stellar Rotation Rates and IRAC Excesses in Orion (2006)
Rebull, L. M., Stauffer, J. R., Megeath, S. T., Hora, J. L., Hartmann, L.
Early observations of T Tauri stars suggested that stars with evidence of circumstellar accretion disks rotated slower than stars without such evidence, but more recent results are not as clear....
Outflows from Massive YSOs as Seen with the Infrared Array Camera (2006)
Smith, Howard A., Hora, J. L., Marengo, M., Pipher, Judith L.
The bipolar outflow from the massive star forming cluster in DR21 is one of the most powerful known, and in IRAC images the outflow stands out by virtue of its brightness at 4.5 um (Band 2). Indeed,...
Mueller, Michael, Harris, Alan W., Bus, Schelte J., Hora, J. L., Kassis, M., Adams, J. D.
Recent spectroscopic observations indicate that the M-type asteroid 21 Lutetia has a primitive, carbonaceous-chondrite-like (C-type) surface composition for which a low geometric albedo would be...
A Spitzer/IRAC Survey of Massive Star-Forming Regions (2005)
Allen, L. E., Hora, J. L., Megeath, S. T., Deutsch, L. K., Fazio, G. G., Chavarria, L., ...
We are conducting a survey of several regions of high-mass star formation to assess their content and structure. The observations include Spitzer observations, ground-based optical and near-IR...
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 images at 3.6, 4.5,...
The IRAC Shallow Survey (2004)
Eisenhardt, P. R., Stern, D., Brodwin, M., Fazio, G. G., Rieke, G. H., Rieke, M. J., ...
The IRAC shallow survey covers 8.5 square degrees in the NOAO Deep Wide-Field Survey in Bootes with 3 or more 30 second exposures per position. An overview of the survey design, reduction,...
The Spitzer Space Telescope Mission (2004)
Werner, M. W., Roellig, T. L., Low, F. J., Rieke, G. H., Rieke, M., Hoffmann, W. F., ...
The Spitzer Space Telescope, NASA's Great Observatory for infrared astronomy, was launched 2003 August 25 and is returning excellent scientific data from its Earth-trailing solar orbit. Spitzer...
Deep mid-infrared observations of Lyman-break galaxies (2004)
Barmby, P., Fazio, G. G, Surace, J. A., Arendt, R. G., Hora, J. L., ...
As part of the In-Orbit Checkout activities for the Spitzer Space Telescope, the IRAC team carried out a deep observation (average integration time ~8 hours) of a field surrounding the bright QSO HS...
Number Counts At 3 < lambda < 10 um From the Spitzer Space Telescope (2004)
Fazio, G. G., Ashby, M. L. N., Barmby, P., Hora, J. L., Pahre, M. A., ...
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 surface density of...
A Resolved Circumstellar Disk around the Herbig Ae Star HD 100546 in the Thermal Infrared (2003)
Liu, W. M., Hinz, P. M., Meyer, M. R., Mamajek, E. E., Hoffmann, W. F., Hora, J. L.
We present mid-infrared nulling interferometric and direct imaging observations of the Herbig Ae star HD 100546 obtained with the Magellan I (Baade) 6.5 m telescope. The observations show resolved...
Subarcsecond Mid-IR Structure of the Dust Shell around IRAS 22272+5435 (2001)
Ueta, T., Meixner, M., Hinz, P. M., Hoffmann, W. F., Brandner, W., Dayal, A., ...
We report sub-arcsecond imaging of extended mid-infrared emission from a proto-planetary nebula (PPN), \iras 22272+5435, performed at the MMT observatory with its newly upgraded 6.5 m aperture...
Wide-Field Thermal Imaging of the Orion Nebula at High Spatial Resolution (2000)
Deutsch, L. K., Kassis, M., Smith, N., Hora, J. L., Butner, H. M., Hoffmann, W. F., ...
We describe multi-wavelength (8--20 micron), diffraction-limited, mid-infrared images of the OMC-1 cloud core in Orion, covering an approximately two arcminute area around the Trapezium and BN/KL...
First results of nulling interferometry with the Multiple Mirror Telescope (2000)
P. M. Hinz, W. F. Homann, D. W. Mccarthy, P. C. Mcguire, M. Cheselka, ...
Wehave successfully used nulling interferometry at 10 #mwavelength to interferometrically suppress a star's radiation. This technique was #rst proposed by Bracewell 20 years ago to image extra-solar...
Mid-IR Imaging of AGB Circumstellar Envelopes (1999)
Marengo, M., Fazio, G. G., Hora, J. L., Hoffmann, W. F., Dayal, A., Deutsch, L. K.
AGB stars, the precursors of Planetary Nebulae, exhibit high rates of mass loss and eject material in the form of a slow (10-20 km/s), dusty molecular wind. The general belief that the dust component...
First results of nulling interferometry with the Multiple Mirror Telescope (1999)
P. M. Hinz, D. W. Mccarthy, P. C. Mcguire, M. Cheselka, J. L. Hora, N. J. Woolf
We have successfully used nulling interferometry at 10 m wavelength to interferometrically suppress a star's radiation. This technique was first proposed by Bracewell 20 years ago to image...
First results of nulling interferometry with the Multiple Mirror Telescope (1998)
P. M. Hinz, W. F. Hoffmann, D. W. Mccarthy, P. C. Mcguire, M. Cheselka, ...
We have successfully used nulling interferometry at 10 ¯m wavelength to interferometrically suppress a star's radiation. This technique was first proposed by Bracewell 20 years ago to image...
The Infrared Array Camera (IRAC) for the Space Infrared Telescope Facility (SIRTF) (1998)
G. G. Fazio, J. L. Hora, S. P. Willner, J. R. Stauffer, Z. Wang, ...
The Space Infrared Telescope Facility (SIRTF) contains three focal plane instruments, one of which is the Infrared Array Camera (IRAC). IRAC is a four-channel camera that provides simultaneous 5.12...