Reach, William T., Lisse, Carey, Von Hippel, Ted, Mullally, Fergal
We model the mineralogy and distribution of dust around the white dwarf G29-39 using the infrared spectrum from 1-35 microns and combining a wide range of materials based on spectral studies of...
Photometry using the Infrared Array Camera on the Spitzer Space Telescope (2008)
Hora, Joseph L., Carey, Sean, Surace, Jason, Marengo, Massimo, Lowrance, Patrick, Glaccum, William J., ...
We present several corrections for point source photometry to be applied to data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. These corrections are necessary because of...
Properties of protostars in the Elephant Trunk globule IC 1396A (2008)
Reach, William T., Faied, Dohy, Rho, Jeonghee, Boogert, Adwin, Tappe, Achim, Jarrett, Thomas H., ...
Extremely red objects, identified in the early Spitzer Space Telescope observations of the bright-rimmed globule IC 1396A and photometrically classified as Class I protostars Class II T Tauri stars...
Ground-based Optical and SPITZER Infrared Imaging Observations of Comet 21P/Giacobini-Zinner (2008)
Pittichova, Jana, Woodward, Charles E., Kelley, Michael S., Reach, William T.
We present ground-based optical and Spitzer Space Telescope infrared imaging observations of the ecliptic (Jupiter-family) comet 21P/Giacobini-Zinner, the parent body of the Draconid meteor stream,...
Extinction and dust/gas ratio in LMC molecular clouds (2008)
Dobashi, Kazuhito, Bernard, J. P., Hughes, Annie, Paradis, D., Reach, William T., Kawamura, A.
The goal of this paper is to measure the dust content and distribution in the Large Magellanic Cloud (LMC) by comparing extinction maps produced in the near-infrared wavelengths and the spatial...
Extinction and dust/gas ratio in LMC molecular clouds (2008)
Dobashi, Kazuhito, Bernard, J. P., Hughes, Annie, Paradis, D., Reach, William T., Kawamura, A.
The goal of this paper is to measure the dust content and distribution in the Large Magellanic Cloud (LMC) by comparing extinction maps produced in the near-infrared wavelengths and the spatial...
Extinction and dust/gas ratio in LMC molecular clouds (2008)
Dobashi, Kazuhito, Bernard, J. P., Hughes, Annie, Paradis, D., Reach, William T., Kawamura, A.
The goal of this paper is to measure the dust content and distribution in the Large Magellanic Cloud (LMC) by comparing extinction maps produced in the near-infrared wavelengths and the spatial...
The First Mid-Infrared Spectra of Cool White Dwarfs (2007)
Kilic, Mukremin, Kowalski, Piotr M., Mullally, Fergal, Reach, William T., Von Hippel, Ted
We present the first mid-infrared spectra of two cool white dwarfs obtained with the Spitzer Space Telescope. We also present 3.5-8 micron photometry for 19 cool white dwarfs with 5000K < Teff <...
The Dust Trail of Comet 67P/Churyumov-Gerasimenko (2007)
Kelley, Michael S., Reach, William T., Lien, David J.
We report the detection of comet 67P/Churyumov-Gerasimenko's dust trail and nucleus in 24 micron Spitzer Space Telescope images taken February 2004. The dust trail is not found in optical Palomar...
A survey of debris trails from short-period comets (2007)
Reach, William T., Kelley, Michael S., Sykes, Mark V.
We observed 34 comets using the 24 micron camera on the Spitzer Space Telescope. Each image contains the nucleus and covers at least 10^6 km of each comet's orbit. Debris trails due to mm-sized or...
The New Class of Dusty DAZ White Dwarfs (2007)
Von Hippel, Ted, Kuchner, Marc J., Kilic, Mukremin, Mullally, Fergal, Reach, William T.
Our mid-infrared survey of 124 white dwarfs with the Spitzer Space Telescope and the IRAC imager has revealed an infrared excess associated with the white dwarf WD 2115-560 naturally explained by...
A near-infrared and X-ray study of W49B: A wind cavity explosion (2007)
Keohane, Jonathan W., Reach, William T., Rho, Jeonghee, Jarrett, Thomas H.
We present near-infrared narrowband images of the supernova remnant W49 B, taken with the WIRC instrument on the Hale 200 inch (5 m) telescope on Mount Palomar. The 1.64 μm [Fe II] image reveals a...
A Spitzer White Dwarf Infrared Survey (2006)
Mullally, F., Kilic, Mukremin, Reach, William T., Kuchner, Marc J., Von Hippel, Ted, Burrows, Adam, ...
We present mid-infrared photometry of 124 white dwarf stars with Spitzer Space Telescope. Objects were observed simultaneously at 4.5 and 8.0um with sensitivities better than 1 mJy. This data can be...
A Search for Deep Impact's Large Particle Ejecta (2006)
Kelley, Michael S., Reach, William T., Woodward, Charles E.
The Deep Impact encounter with the nucleus of 9P/Tempel ejected small grains (a ~ 100 micron) ejected by the impact will likely have the lowest ejection velocities and will weakly interact with solar...
Hancock, Mark, Smith, Beverly J., Struck, Curtis, Giroux, Mark L., Appleton, Philip N., Charmandaris, Vassilis, ...
As part of our Spitzer Spirals, Bridges, and Tails project to help understand the effects of galaxy interactions on star formation, we analyze GALEX ultraviolet, SARA optical, and Spitzer infrared...
A Near-Infrared and X-ray Study of W49B: A Wind Cavity Explosion (2006)
Keohane, Jonathan W., Reach, William T., Rho, Jeonghee, Jarrett, Thomas H.
We present near-infrared narrow-band images of the supernova remnant W49B, taken with the WIRC instrument on the Hale 200 inch telescope on Mt. Palomar. The 1.64 micron [Fe II] image reveals a...
Clustering of the IR Background Light with Spitzer: Contribution from Resolved Sources (2006)
Sullivan, Ian, Cooray, Asantha, Chary, Ranga-Ram, Bock, James J., Brodwin, Mark, Brown, Michael J. I., ...
We describe the angular power spectrum of resolved sources at 3.6 microns (L-band) in Spitzer imaging data of the GOODS HDF-N, the GOODS CDF-S, and the NDWFS Bootes field in several source magnitude...
Candidates for asteroid dust trails (2006)
Nesvorný, David, Sykes, Mark, Lien, David J., Stansberry, John, Reach, William T., Vokrouhlický, David, ...
The contribution of different sources to the circumsolar dust cloud (known as the zodiacal cloud) can be deduced from diagnostic observations. We used the Spitzer Space Telescope to observe the...
The Mystery Deepens: Spitzer Observations of Cool White Dwarfs (2006)
Kilic, Mukremin, Von Hippel, Ted, Mullally, Fergal, Reach, William T., Kuchner, Marc J., Winget, D. E., ...
We present 4.5$\mu$m and 8$\mu$m photometric observations of 18 cool white dwarfs obtained with the Spitzer Space Telescope. Our observations demonstrate that four white dwarfs with T_eff< 6000 K...
The Dust cloud around the White Dwarf G 29-38 (2005)
Reach, William T., Kuchner, Marc J., Von Hippel, Ted, Burrows, Adam, Mullally, Fergal, Kilic, Mukremin, ...
We present new observations of the white dwarf G 29-38 with the camera (4.5 and 8 microns), photometer (24 microns), and spectrograph (5.5-14 microns) of the Spitzer Space Telescope. This star has an...
A Spitzer Space Telescope Infrared Survey of Supernova Remnants in the Inner Galaxy (2005)
Reach, William T., Rho, Jeonghee, Tappe, Achim, Pannuti, Thomas G., Brogan, Crystal L., Churchwell, Edward B., ...
Using Infrared Array Camera (IRAC) images at 3.6, 4.5, 5.8, and 8 microns from the GLIMPSE Legacy science program on the Spitzer Space Telescope, we searched for infrared counterparts to the 95 known...
Yan, Haojing, Dickinson, Mark, Stern, Daniel, Eisenhardt, Peter R. M., Chary, Ranga-Ram, Giavalisco, Mauro, ...
We use data from the first epoch of observations with the IRAC/Spitzer for the GOODS to detect and study a collection of LBGs at z ~ 6 to 5 in the HUDF, six of which have spectroscopic confirmation....
Absolute Calibration of the Infrared Array Camera on the Spitzer Space Telescope (2005)
Reach, William T., Megeath, S. T., Cohen, Martin, Hora, J., Carey, Sean, Surace, Jason, ...
The Infrared Array Camera (IRAC) on the Spitzer Space Telescope is absolutely calibrated by comparing photometry on a set of A stars near the north ecliptic pole to predictions based on ground-based...
Reach, William T., Rho, Jeonghee, Jarrett, T. H.
High resolution millimeter-wave and near-infrared observations of the supernova remnants W28 and W44 reveal extensive shocked molecular gas where supernova blast waves are propagating into giant...
Yan, Haojing, Dickinson, Mark, Eisenhardt, Peter R. M., Ferguson, Henry C., Grogin, Norman A., Paolillo, Maurizio, ...
Using early data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope, taken for the Great Observatories Origins Deep Survey (GOODS), we identify and study objects that are...
Protostars in the Elephant Trunk Nebula (2004)
Reach, William T., Rho, Jeonghee, Young, Erick, Muzerolle, James, Fajardo-Acosta, Sergio, Hartmann, Lee, ...
The optically-dark globule IC 1396A is revealed using Spitzer images at 3.6, 4.5, 5.8, 8, and 24 microns to be infrared-bright and to contain a set of previously unknown protostars. The mid-infrared...
Structure and Colors of Diffuse Emission in the Spitzer Galactic First Look Survey (2004)
Ingalls, James G., Reach, William T., Noriega-Crespo, A., Carey, Sean J., Boulanger, F., ...
We investigate the density structure of the interstellar medium using new high-resolution maps of the 8 micron, 24 micron, and 70 micron surface brightness towards a molecular cloud in the Gum...
THE ASTROPHYSICAL JOURNAL, 544 : 843858, 2000 December 1 (2003)
William T. Reach, Jeonghee Rho
We present Infrared Space Observatory spectroscopy of sites in the supernova remnants W28, W44, and 3C 391, where blast waves are impacting molecular clouds. The complete wavelength range from 42 to...
The Mid-Infrared Spectrum of the Zodiacal and Exozodiacal Light (2003)
Reach, William T., Morris, Patrick, Boulanger, Franccois, Okumura, Koryo
The zodiacal light is the dominant source of the mid-infrared sky brightness seen from Earth, and exozodiacal light is the dominant emission from planetary and debris systems around other stars. We...
Near-Infrared Synchrotron Emission from Cas A (2003)
Rho, Jeonghee, Reynolds, Stephen P., Reach, William T., Jarrett, Tom H., Allen, Glenn E.
High energy observations of Cas A suggested the presence of synchrotron radiation, implying acceleration of cosmic rays by young supernova remnants. We detect synchrotron emission from Cas A in the...
Performance of the Infrared Array Camera (IRAC) for SIRTF during (2002)
Joseph L. Hora, Giovanni G. Fazio, Lori E. Allen, Pauline Barmby, Lynne K. Deutsch, ...
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,...
Photoelectric Heating and [CII] Cooling of High Galactic Latitude Translucent Clouds (2002)
Ingalls, James G., Reach, William T., Bania, T. M.
The (2P3/2 -> 2P1/2) transition of singly--ionized carbon, [CII], is the primary coolant of diffuse interstellar gas. We describe observations of [CII] emission towards nine high Galactic latitude...
Molecular and Ionic shocks in the Supernova Remnant 3C391 (2001)
Reach, William T., Rho, Jeonghee, Jarrett, T. H., Lagage, Pierre-Olivier
New observations of the supernova remnant 3C391 are in the H2 2.12 micron and [Fe II] 1.64 micron narrow-band filters at the Palomar 200-inch telescope, and in the 5-15 micron CVF on ISOCAM. Shocked...
Marc J. Kuchner, William T. Reach, Michael E. Brown
We search the COBE DIRBE sky and...
X-rays and Protostars in the Trifid Nebula (2001)
Rho, Jeonghee, Corcoran, Michael F., Chu, You-Hua, Reach, William T.
The Trifid Nebula is a young HII region recently rediscovered as a "pre-Orion" star forming region, containing protostars undergoing violent mass ejections visible in optical jets as seen in images...
Shocked Molecular Gas in the Supernova Remnant HB 21 (2000)
Koo, Bon-Chul, Rho, Jeonghee, Reach, William T., Jung, JaeHoon, Mangum, Jeffrey G.
We report the discovery of the shocked molecular gas in the supernova remnant HB 21. We derive the physical parameters of the shocked gas from CO J=1-0 and J=2-1 line observations. We discuss the...
Reach, William T., Boulanger, Francois, Contursi, Alessandra, Lequeux, James
The mid-infrared (5-16 micron) spectral energy distribution for an individual quiescent molecular cloud in the Small Magellanic Cloud (SMC) was observed using ISOCAM. The spectrum is dominated by...
The formation of Encke meteoroids and dust trail (2000)
Reach, William T., Sykes, Mark V., Lien, David, Davies, John K.
We observed comet 2P/Encke with the Infrared Space Observatory ISOCAM on July 14, 1997 from a particularly favorable viewing geometry above the comet's orbital plane and at a distance of 0.25 AU. A...
Infrared Spectroscopy of Molecular Supernova Remnants (2000)
Reach, William T., Rho, Jeonghee
We present Infrared Space Observatory spectroscopy of sites in the supernova remnants W28, W44, and 3C391, where blast waves are impacting molecular clouds. Atomic fine-structure lines were detected...
Kuchner, Marc J., Reach, William T., Brown, Michael E.
We searched the COBE DIRBE Sky and Zodi Atlas for a wake of dust trailing Mars and for Trojan dust near Jupiter's L5 Lagrange point. We compare the DIRBE images to a model Mars wake based on the...
First detections of FIRBACK sources with SCUBA (1999)
Scott, Douglas, Lagache, Guilaine, Borys, Colin, Chapman, Scott C., Halpern, Mark, Sajina, Anna, ...
The FIRBACK (Far InfraRed BACKground) survey represents the deepest extensive 170 micron images obtained by the ISO satellite. The sources detected comprise about 10% of the Cosmic IR Background...
Reach, William T., Rho, Jeonghee
We report the detection of shock-excited far-infrared emission of H2O, OH, and CO from the supernova remnant 3C 391, using the ISO Long-Wavelength Spectrometer. This is the first detection of thermal...
Excitation and Disruption of a Giant Molecular Cloud by the Supernova Remnant 3C391 (1998)
Reach, William T., Rho, Jeonghee
Using the IRAM 30-m telescope, we observed the supernova remnant 3C 391 (G31.9+0.0) and its surroundings in the CO(2-1), HCO+(1-0), CS(2-1), CS(3-2), and CS(5-4) lines. The ambient molecular gas at...
Reach, William T., Wall, William F., Odegard, Nils
We have created a map of the large-scale infrared surface brightness in excess of that associated with the atomic interstellar medium, using region-by-region correlations between the far-infrared and...