Joseph L. Hora, Giovanni G. Fazio, Lori E. Allen, Pauline Barmby, ...
The Infrared Array Camera (IRAC) is one of three focal plane instruments in the Space Infrared Telescope Facility (SIRTF). IRAC is a four-channel camera that obtains simultaneous images at 3.6, 4.5,...
IRAC Observations of Planetary Nebulae (2004)
Hora, Joseph L., Latter, William B., Allen, Lori E., Marengo, Massimo, Deutsch, Lynne K., Pipher, Judith L.
We present the initial results from the Infrared Array Camera (IRAC) imaging survey of planetary nebulae (PN). The IRAC colors of PN are red, especially when considering the 8.0 micron band. Emission...
Mid-IR Observations of Mira Circumstellar Environment (2001)
Marengo, Massimo, Karovska, Margarita, Fazio, Giovanni G., Hora, Joseph L., Hoffmann, William F., Dayal, Aditya, ...
This paper presents results from high-angular resolution mid-IR imaging of the Mira AB circumbinary environment using the MIRAC3 camera at the NASA Infrared Telescope Facility (IRTF). We resolved the...
Spatial Distributions of Multiple Dust Components in the PPN/PN Dust Shells (2000)
Ueta, Toshiya, Speck, Angela K., Meixner, Margaret, Dayal, Aditya, Hora, Joseph L., Fazio, Giovanni G., ...
We investigate spatial distributions of specific dust components in the circumstellar shells of a proto-planetary nebula candidate, HD 179821, and a planetary nebula, BD$+30^{\circ}$3639, by means of...
Ueta, Toshiya, Meixner, Margaret, Dayal, Aditya, Deutsch, Lynne K., Fazio, Giovanni, Hora, Joseph L., ...
We report detection of an extended mid-infrared emission from \iras 18576+0341 (AFGL 2298). The object shows a dusty circumstellar shell that has diameter of $\age 7\arcsec$ at 10.3 and 18.0 $\um$....
Marengo, Massimo, Jayawardhana, Ray, Fazio, Giovanni G., Hoffmann, William F., Hora, Joseph L., Dayal, Aditya, ...
Most, if not all, stars are now believed to produce energetic outflows during their formation. Yet, almost 20 years after the discovery of bipolar outflows from young stars, the origins of this...
Investigating the Near-Infrared Properties of Planetary Nebula II. Medium Resolution Spectra (1999)
Hora, Joseph L., Latter, William B., Deutsch, Lynne K.
We present medium-resolution (R~700) near-infrared (lambda = 1 - 2.5 micron) spectra of a sample of planetary nebulae (PNe). A narrow slit was used which sampled discrete locations within the...
Investigating the Near-Infrared Properties of Planetary Nebulae. I. Narrowband Images (1995)
Latter, William B., Kelly, Douglas M., Hora, Joseph L., Deutsch, Lynne K.
We present the results of a near-infrared narrowband imaging survey of planetary nebulae. Objects were selected in a way that complements similar surveys done at visible and near-infrared...
Thesis (Ph. D.)--Harvard University, 1990.