Van Loon, Jacco Th., Oliveira, Joana M., Gordon, Karl D., Meixner, Margaret, Shiao, Bernie, Boyer, Martha L., ...
[abridged] We present 52-93 micron spectra obtained with Spitzer in the MIPS-SED mode, of a representative sample of luminous compact far-IR sources in the LMC. These include carbon stars, OH/IR AGB...
Mizuno, Yoji, Kawamura, Akiko, Onishi, Toshikazu, Minamidani, Tetsuhiro, Muller, Erik, Yamamoto, Hiroaki, ...
New 12CO J=4-3 and 13CO J=3-2 observations of the N159 region in the Large Magellanic Cloud have been made. The 12CO J=4-3 distribution is separated into three clumps. These new measurements toward...
Dust Production and Mass Loss in the Galactic Globular Cluster NGC 362 (2009)
Boyer, Martha L., McDonald, Iain, Van Loon, Jacco Th., Gordon, Karl D., Babler, Brian, Block, Miwa, ...
We investigate dust production and stellar mass loss in the Galactic globular cluster NGC 362. Due to its close proximity to the Small Magellanic Cloud (SMC), NGC 362 was imaged with the IRAC and...
Gordon, Karl D., Cartledge, Stefan, Clayton, Geoffrey C.
We present a sample of 75 extinction curves derived from FUSE far-ultraviolet spectra supplemented by existing IUE spectra. The extinction curves were created using the standard pair method based on...
Srinivasan, Sundar, Meixner, Margaret, Leitherer, Claus, Vijh, Uma, Volk, Kevin, Blum, Robert D., ...
We present empirical relations describing excess emission from evolved stars in the Large Magellanic Cloud (LMC) using data from the SAGE (Surveying the Agents of a Galaxy's Evolution) survey which...
Spitzer View of Young Massive Stars in the LMC HII Complex N44 (2009)
Chen, C. -H. Rosie, Chu, You-Hua, Gruendl, Robert A., Gordon, Karl D., Heitsch, Fabian
The HII complex N44 in the Large Magellanic Cloud (LMC) provides an excellent site to perform a detailed study of star formation in a mild starburst, as it hosts three regions of star formation at...
The Behavior of the Aromatic Features in M101 HII Regions: Evidence for Dust Processing (2008)
Gordon, Karl D., Engelbracht, Charles W., Rieke, George H., Misselt, K. A., Smith, J. -D. T., Kennicutt Jr, Robert C.
The aromatic features in M101 were studied spectroscopically and photometrically using observations from all three instruments on the Spitzer Space Telescope. The global SED of M101 shows strong...
Lu, Nanyao, Smith, Paul S., Engelbracht, Charles W., Noriega-Crespo, Alberto, Morrison, Jane, Gordon, Karl D., ...
The spectral energy distribution (SED) mode of the Multiband Imaging Photometer for Spitzer (MIPS) aboard the Spitzer Space Telescope provides low-spectral resolution (R ≈ 15–25) spectroscopy in...
The incidence of highly obscured star-forming regions in SINGS galaxies (2007)
Prescott, Moire K. M., Bendo, George J., Buckalew, Brent A., Calzetti, Daniela, Engelbracht, Charles W., ...
Using the new capabilities of Spitzer and extensive multiwavelength data from SINGS, it is now possible to study the infrared properties of star formation in nearby galaxies down to scales equivalent...
The Incidence of Highly-Obscured Star-Forming Regions in SINGS Galaxies (2007)
Prescott, Moire K. M., Kennicutt Jr., Robert C., Bendo, George J., Buckalew, Brent A., Calzetti, Daniela, Engelbracht, Charles W., ...
Using the new capabilities of the Spitzer Space Telescope and extensive multiwavelength data from the Spitzer Infrared Nearby Galaxies Survey (SINGS), it is now possible to study the infrared...
Spitzer observations of a 24 micron shadow: Bok Globule CB190 (2007)
Stutz, Amelia M., Bieging, John H., Rieke, George H., Shirley, Yancy L., Balog, Zoltan, Gordon, Karl D., ...
We present Spitzer observations of the dark globule CB190 (L771). We observe a roughly circular 24 micron shadow with a 70 arcsec radius. The extinction profile of this shadow matches the profile...
Gordon, Karl D., Engelbracht, Charles W., Fadda, Dario, Stansberry, John, Wachter, Stefanie, Frayer, Dave T., ...
The absolute calibration and characterization of the Multiband Imaging Photometer for Spitzer (MIPS) 70 micron coarse- and fine-scale imaging modes are presented based on over 2.5 years of...
Star formation in NGC 5194 (M51a). II. The spatially resolved starformation law (2007)
Kennicutt, Robert C., Calzetti, Daniela, Walter, Fabian, Helou, George, Hollenbach, David J., Armus, Lee, ...
We have studied the relationship between the star formation rate (SFR), surface density, and gas surface density in the spiral galaxy M51a (NGC 5194), using multiwavelength data obtained as part of...
Pérez-González, Pablo G., Gordon, Karl D., Misselt, Karl A., Gil De Paz, Armando, Engelbracht, Charles W., ...
The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet to the far-infrared. We compare these data with models of the...
Cannon, John M., Walter, Fabian, Armus, Lee, Bendo, George J., Calzetti, Daniela, Draine, Bruce T., ...
We present Spitzer imaging of the metal-deficient (Z ~30% Z_sun) Local Group dwarf galaxy NGC 6822. On spatial scales of ~130 pc, we study the nature of IR, H alpha, HI, and radio continuum emission....
Bendo, George J., Dale, Daniel A., Draine, Bruce T., Engelbracht, Charles W., Kennicutt, Robert C., ...
We explore the nature of variations in dust emission within an individual galaxy using 3.6 - 160 micron Spitzer Space Telescope observations and 450 and 850 micron James Clerk Maxwell Telescope...
Perez-Gonzalez, Pablo G., Kennicutt Jr., Robert C., Gordon, Karl D., Misselt, Karl A., De Paz, Armando Gil, Engelbracht, Charles W., ...
The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare these data with...
Bendo, George J., Buckalew, Brent A., Dale, Daniel A., Draine, Bruce T., Joseph, Robert D., ...
We present Spitzer 3.6–160 μm images, Spitzer mid-infrared spectra, and JCMT SCUBA 850 μm images of the Sombrero Galaxy (NGC 4594), an Sa galaxy with a 10^9 M⊙ ; low-luminosity active...
Meixner, Margaret, Gordon, Karl D., Indebetouw, Remy, Hora, Joseph L., Whitney, Barbara, Blum, Robert, ...
We are performing a uniform and unbiased, ~7x7 degrees imaging survey of the Large Magellanic Cloud (LMC), using the IRAC and MIPS instruments on board the Spitzer Space Telescope in order to survey...
Boyer, Martha L., Woodward, Charles E., Van Loon, Jacco Th., Gordon, Karl D., Evans, A., Gehrz, Robert D., ...
We present Spitzer Space Telescope IRAC and MIPS observations of the galactic globular cluster M15 (NGC 7078), one of the most metal-poor clusters with a [Fe/H] = -2.4. Our Spitzer images reveal a...
Massive-Star Supernovae as Major Dust Factories (2006)
Sugerman, Ben E. K., Ercolano, Barbara, Barlow, M. J., Clayton, Geoffrey C., Zijlstra, Albert A., ...
We present late-time optical and mid-infrared observations of the Type-II supernova 2003gd in NGC 628. Mid-infrared excesses consistent with cooling dust in the ejecta are observed 499-678 days after...
Perez-Gonzalez, Pablo G., Kennicutt Jr., Robert C., Gordon, Karl D., Misselt, Karl A., De Paz, Armando Gil, Engelbracht, Charles W., ...
The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare these data with...
Aromatic Features in M101 HII Regions and Starburst Galaxies (2006)
Gordon, Karl D., Engelbracht, C. W., Smith, J. -D. T., Rieke, G. H., Misselt, K. A.
The behavior of the aromatic features as a function of metallicity/radiation field hardness in M101 HII regions and starburst galaxies is investigated using Spitzer/IRS spectra. These spectra reveal...
Warm Dust and Spatially Variable PAH Emission in the Dwarf Starburst Galaxy NGC 1705 (2006)
Cannon, John M., Smith, John-David T., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...
We present Spitzer observations of the dwarf starburst galaxy NGC 1705 obtained as part of SINGS. The galaxy morphology is very different shortward and longward of ~5 microns: short-wavelength...
Spitzer/MIPS Infrared Imaging of M31: Further Evidence for a Spiral/Ring Composite Structure (2006)
Gordon, Karl D., Bailin, J., Engelbracht, C. W., Rieke, G. H., Misselt, K. A., Latter, W. B., ...
New images of M31 at 24, 70, and 160 micron taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...
Perez-Gonzalez, Pablo G., Kennicutt Jr., Robert C., Gordon, Karl D., Misselt, Karl A., De Paz, Armando Gil, Engelbracht, Charles W., ...
The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare these data with...
Perez-Gonzalez, Pablo G., Kennicutt Jr., Robert C., Gordon, Karl D., Misselt, Karl A., De Paz, Armando Gil, Engelbracht, Charles W., ...
The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare these data with...
Hines, Dean C., Backman, Dana E., Bouwman, Jeroen, Hillenbrand, Lynne A., Carpenter, John M., Meyer, Michael R., ...
We report the discovery of a debris system associated with the ~30 Myr old G3/5V star HD 12039 using Spitzer Space Telescope observations from 3.6-160 mum. An observed infrared excess...
Cannon, John M., Walter, Fabian, Armus, Lee, Bendo, George J., Calzetti, Daniela, Draine, Bruce T., ...
We present Spitzer imaging of the metal-deficient (Z~=30% Zsolar) Local Group dwarf galaxy NGC 6822. On spatial scales of ~130 pc, we study the nature of IR, Halpha, H I, and radio continuum...
Cannon, John M., Smith, John-David T., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...
We present Spitzer observations of the nearby dwarf starburst galaxy NGC 1705 obtained as part of the Spitzer Infrared Nearby Galaxies Survey. The galaxy morphology is very different shortward and...
Bendo, George J., Buckalew, Brent A., Dale, Daniel A., Draine, Bruce T., Joseph, Robert D., Kennicutt, Robert C., ...
We present Spitzer 3.6-160 mum images, Spitzer mid-infrared spectra, and JCMT SCUBA 850 mum images of the Sombrero Galaxy (NGC 4594), an Sa galaxy with a 109 Msolar low-luminosity active galactic...
Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)
Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...
New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...
Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)
Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...
New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...
Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)
Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...
New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...
Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)
Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...
New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...
George J. Bendo, Brent A. Buckalew, Daniel A. Dale, Bruce T. Draine, Robert D. Joseph, Robert C. Kennicutt, ...
We present Spitzer 3.6–160 m images, Spitzer mid-infrared spectra, and JCMT SCUBA 850 m images of the Sombrero Galaxy (NGC 4594), an Sa galaxy with a 10 9 M low-luminosity active galactic nucleus...
Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)
Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...
New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...
Buckalew, Brent A., Kobulnicky, Henry A., Darnel, Jonathan M., Polomski, Elisha, Gehrz, Robert D., Humphreys, Roberta M., ...
We present ultraviolet, optical, near-infrared, Spitzer mid-infrared, and radio images of 14 radio-selected objects in M 33. These objects are thought to represent the youngest phase of star cluster...
Witt, Adolf N., Gordon, Karl D., Vijh, Uma P., Sell, Paul H., Smith, Tracy L., Xie, Rui-Hua
The carrier of the dust-associated photoluminescence process causing the extended red emission (ERE) in many dusty interstellar environments remains unidentified. Several competing models are more or...
Spitzer Observations Of The Supergiant Shell Region In IC 2574 (2005)
Cannon, John M., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., Draine, Bruce T., ...
We present spatially resolved Spitzer imaging of the supergiant shell region of the M81 group dwarf galaxy IC 2574 obtained as part of the Spitzer Infrared Nearby Galaxies Survey. This region harbors...
Discovery of Five New R Coronae Borealis Stars in the MACHO Galactic Bulge Database (2005)
Zaniewski, A., Clayton, Geoffrey C., Welch, D. L., Gordon, Karl D., Minniti, D., Cook, K. H.
We have identified five new R Coronae Borealis (RCB) stars in the Galactic bulge using the MACHO Project photometry database, raising the total number of known Galactic RCB stars to about 40. We have...
Formation and Evolution of Planetary Systems: Cold Outer Disks Associated with Sun-like stars (2005)
Kim, Jinyoung Serena, Hines, Dean C., Backman, Dana E., Hillenbrand, Lynne A., Meyer, Michael R., Rodmann, Jens, ...
We present the discovery of debris systems around three solar mass stars based upon observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``the Formation and...
FUSE Measurements of Far Ultraviolet Extinction. II. Magellanic Cloud Sight Lines (2005)
Cartledge, Stefan I. B., Clayton, Geoffrey C., Gordon, Karl D., Rachford, Brian L., Draine, B. T., Martin, P. G., ...
We present an extinction analysis of 9 paths through the LMC and SMC based on FUSE observations. To date, just two LMC sight lines have probed dust grain composition and size distributions in the...
Detection of Near-IR CO Absorption Bands in R Coronae Borealis Stars (2005)
Tenenbaum, Emily D., Clayton, Geoffrey C., Asplund, Martin, Engelbracht, C. W., Gordon, Karl D., Hanson, M. M., ...
R Coronae Borealis (RCB) stars are hydrogen-deficient, carbon-rich pulsating post-AGB stars that experience massive irregular declines in brightness caused by circumstellar dust formation. The...
An Extremely Large Excess of 18O in the Hydrogen-Deficient Carbon Star, HD 137613 (2005)
Clayton, Geoffrey C., Herwig, Falk, Geballe, T. R., Asplund, Martin, Tenenbaum, Emily D., Engelbracht, C. W., ...
We report the discovery of a uniquely large excess of 18O in the hydrogen-deficient carbon (HdC) star, HD 137613, based on a spectrum of the first overtone bands of CO at 2.3-2.4 micron in which...
Measuring Extinction Curves of Lensing Galaxies (2005)
McGough, Christina, Clayton, Geoffrey C., Gordon, Karl D., Wolff, Michael J.
We critique the method of constructing extinction curves of lensing galaxies using multiply imaged QSOs. If one of the two QSO images is lightly reddened or if the dust along both sightlines has the...
This paper summarizes the evidence of the ultraviolet properties of dust grains found in starburst galaxies. Observations of starburst galaxies clearly show that the 2175 A feature is weak or absent....
Infrared echoes near the Supernova remnant Cassiopeia A (2005)
Krause, Oliver, Rieke, George H., Birkmann, Stephan M., Le Floc'h, Emeric, Gordon, Karl D., Egami, Eiichi, ...
Two images of Cassiopeia A obtained at 24 micrometers with the Spitzer Space Telescope over a 1-year time interval show moving structures outside the shell of the supernova remnant to a distance of...
Spitzer observations of the supergiant shell region in IC 2574 (2005)
Cannon, John M., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., Draine, Bruce T., ...
We present spatially resolved Spitzer Space Telescope imaging of the supergiant shell region of the M81 group dwarf galaxy IC 2574 obtained as part of the Spitzer Infrared Nearby Galaxies Survey....
Formation and evolution of planetary systems: Cold outer disks associated with sun-like stars (2005)
Kim, Jinyoung Serena, Hines, Dean C., Backman, Dana E., Hillenbrand, Lynne A., Meyer, Michael R., Rodmann, Jens, ...
We present the discovery of debris systems around three Sun-like stars based on observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``The Formation and...
Le Floc'h, Emeric, Papovich, Casey, Dole, Hervé, Bell, Eric F., Lagache, Guilaine, Rieke, George H., ...
We analyze a sample of ~2600 Spitzer MIPS 24 mum sources brighter than ~80 muJy and located in the Chandra Deep Field-South to characterize the evolution of the comoving infrared (IR) energy density...
Small PAHs in the Red Rectangle (2004)
Vijh, Uma P., Witt, Adolf N., Gordon, Karl D.
Following our initial discovery of blue luminescence in the spectrum of the Red Rectangle (RR) and its identification as fluorescence by small three- to four-ringed polycyclic aromatic hydrocarbon...
Ultraviolet Extinction Properties in the Milky Way (2004)
Valencic, Lynne A., Clayton, Geoffrey C., Gordon, Karl D.
We have assembled a homogeneous database of 417 ultraviolet (UV) extinction curves for reddened sightlines having International Ultraviolet Explorer (IUE) spectra. We have combined these with optical...
New debris disk candidates: 24 micron stellar excesses at 100 Myr (2004)
Gorlova, Nadya, Padgett, Deborah L., Rieke, George H., Muzerolle, James, Morrison, Jane E., Engelbracht, Chad W., ...
Sixty three members of the 100 Myr old open cluster M47 (NGC 2422) have been detected at 24 micron with Spitzer. The Be star V 378 Pup shows an excess both in the near-infrared and at 24 micron...
Vijh, Uma P., Witt, Adolf N., Gordon, Karl D.
Here we report our discovery of a band of blue luminescence (BL) in the Red Rectangle (RR) nebula. This enigmatic proto-planetary nebula is also one of the brightest known sources of extended red...
Interstellar Polarization in M31 (2004)
Clayton, Geoffrey C., Wolff, Michael J., Gordon, Karl D., Smith, Paul S., Nordsieck, Kenneth H., Babler, Brian L.
The wavelength dependence of interstellar polarization due to dust in M31 has been observed along four sightlines. Only one sightline had been measured previously.The globular clusters, S78, S150,...
Vijh, Uma P., Witt, Adolf N., Gordon, Karl D.
Author Institution: Ritter Astrophysical Research Center, MS 113, University of Toledo; Steward Observatory, University of Arizona
No cold dust within the supernova remnant Cassiopeia A (2004)
Krause, Oliver, Birkmann, Stephan M., Rieke, George H., Lemke, Dietrich, Klaas, Ulrich, Hines, Dean C., ...
A large amount (about three solar masses) of cold (18K) dust in the prototypical type II supernova remnant Cassiopeia A was recently reported. It was concluded that dust production in type II...
Interstellar Dust Scattering Properties (2003)
Studies of dust scattering properties in astrophysical objects with Milky Way interstellar dust are reviewed. Such objects are reflection nebulae, dark clouds, and the Diffuse Galactic Light (DGL)....
A Quantitative Comparison of SMC, LMC, and Milky Way UV to NIR Extinction Curves (2003)
Gordon, Karl D., Clayton, Geoffrey C., Misselt, K. A., Landolt, Arlo U., Wolff, Michael J.
We present an exhaustive, quantitative comparison of all of the known extinction curves in the Small and Large Magellanic Clouds (SMC and LMC) with our understanding of the general behavior of Milky...
Clayton, Geoffrey C., Gordon, Karl D., Witt, Adolf N., Allamandola, L. J., Martin, Peter G., Salama, F., ...
We have obtained new STIS/HST spectra to search for structure in the ultraviolet interstellar extinction curve, with particular emphasis on a search for absorption features produced by polycyclic...
The Dust in Lyman Break Galaxies (2003)
Vijh, Uma P., Witt, Adolf N., Gordon, Karl D.
We present our analysis of UV attenuation by internal dust of a large sample (N=906 galaxies) of Lyman Break Galaxies (LBGs). Using spectral energy distributions (SEDs) from the P\'EGASE galaxy...
A New Feature in the Interstellar Extinction Curve at 2700 A: Diamonds in the Rough? (2002)
Clayton, Geoffrey C., Gordon, Karl D., Witt, Adolf N., Allamandola, L. J., Martin, Peter G., Salama, F., ...
Space Telescope Imaging Spectrograph (STIS) and archival International Ultraviolet Explorer (IUE) data were used to search for structure in the ultraviolet interstellar extinction curve. Between 1250...
The effects of dust in simple environments: Large Magellanic Cloud HII regions (2001)
Bell, Eric F., Gordon, Karl D., Kennicutt Jr., Robert C., Zaritsky, Dennis
We investigate the effects of dust on Large Magellanic Cloud (LMC) HII region spectral energy distributions using arcminute-resolution far-ultraviolet (FUV), H-alpha, far-infrared (FIR), and radio...
The DIRTY Model. I. Monte Carlo Radiative Transfer Through Dust (2000)
Gordon, Karl D., Misselt, K. A., Witt, Adolf N., Clayton, Geoffrey C.
We present the DIRTY radiative transfer model in this paper and a companion paper. This model computes the polarized radiative transfer of photons from arbitrary distributions of stars through...
Magellanic-Cloud-Type Interstellar Dust Along Low Density Sightlines in the Galaxy (2000)
Clayton, Geoffrey C., Gordon, Karl D., Wolff, Michael J.
We have studied the UV extinction properties along 30 Galactic sightlines using data from the International Ultraviolet Explorer (IUE) archive that have never been previously examined. These distant...
The Flux Ratio Method for Determining the Dust Attenuation of Starburst Galaxies (1999)
Gordon, Karl D., Clayton, Geoffrey C., Witt, Adolf N., Misselt, K. A.
The presence of dust in starburst galaxies complicates the study of their stellar populations as the dust's effects are similar to those associated with changes in the galaxies' stellar age and...
Multiple Scattering in Clumpy Media. II. Galactic Environments (1999)
Witt, Adolf N., Gordon, Karl D.
We present and discuss the results of new multiple-scattering radiative transfer calculations for three representative types of galactic environments, filled with either homogeneous or two-phase...
The Ever Changing Circumstellar Nebula Around UW Centauri (1999)
Clayton, Geoffrey C., Kerber, F., Gordon, Karl D., Lawson, Warrick A., Wolff, Michael J., Pollacco, D. L., ...
We present new images of the reflection nebula surrounding the R Coronae Borealis Star, UW Cen. This nebula, first detected in 1990, has changed its appearance significantly. At the estimated...
Misselt, K. A., Clayton, Geoffrey C., Gordon, Karl D.
We have reanalyzed the Large Magellanic Cloud's (LMC) ultraviolet (UV) extinction using data from the IUE final archive. Our new analysis takes advantage of the improved signal--to--noise of the IUE...