Search Publications
Classification of Spectra from the Infrared Space Observatory PHT-S Database
Kraemer, Kathleen E.; Price, Stephan D.; Walker, Helen J. +1 more
We have classified over 1500 infrared spectra obtained with the PHT-S spectrometer aboard the Infrared Space Observatory according to the system developed for the Short Wavelength Spectrometer (SWS) spectra by Kraemer et al. The majority of these spectra contribute to subclasses that are either underrepresented in the SWS spectral database or cont…
Spitzer Space Telescope View of Diffuse Near-Infrared Continuum Emission in the Galaxy
Lu, Nanyao
The Infrared Array Camera (IRAC) multiband images from the Spitzer Space Telescope First Look Survey of two 1deg×5' areas of diffuse interstellar medium (ISM) are used to study the near-infrared (NIR; 2-5 µm) continuum emission and its relation to the mid-infrared (6-10 µm) aromatic features in emission (AFEs). We…
Spitzer Space Telescope Observations of the Aftermath of Microlensing Event MACHO-LMC-5
Stern, Daniel; Kallivayalil, Nitya; Nguyen, Hien T. +3 more
We have carried out photometry of the microlensing event MACHO-LMC-5 with Spitzer Infrared Array Camera (IRAC) 10 years after the magnification of the LMC source star was recorded. This event is unique in the annals of gravitational microlensing: the lensing star itself has been observed using the Hubble Space Telescope (once with WFPC2 and twice …
Keck Adaptive Optics Imaging of 0.5 < z < 1 Field Galaxies from the Hubble Space Telescope Archive
Faber, S. M.; Koo, D. C.; Larkin, J. E. +6 more
We have employed natural guide star adaptive optics (AO) on the Keck II telescope to obtain near-infrared (H and K') images of three field galaxies, each of redshift greater than 0.5. These are among the highest-redshift non-active disk galaxies to be imaged with AO. Each of the galaxies was chosen because it had been observed previously with the …
Preliminary Orbits for Eight Visual Binaries
Ling, J. F.
This paper reports orbits and masses calculated for the visual binary stars WDS 00427-6537 (I440), WDS 01084-5515 (RST 1205 AB), WDS 01343-0827 (A314), WDS 03590+0947 (HU 27), WDS 10287+4558 (A1993), WDS 12429+0516 (A1602), WDS 20157+4339 (A2095 AB), and WDS 22180-6249 (I20). All the orbits have previously been announced in IAU Commission 26 Infor…
ISOCAM Observations of Globular Clusters in the Magellanic Clouds: The Data
Sauvage, M.; Onaka, T.; Tanabé, T. +2 more
Seventeen globular clusters in the Large and Small Magellanic Clouds were observed in the mid-infrared wavelength region with the ISOCAM instrument on board the Infrared Space Observatory (ISO). Observations were made using the broadband filters LW1, LW2, and LW10, corresponding to the effective wavelengths of 4.5, 6.7, and 12 µm, respective…
A Uniform Database of 2.2-16.5 µm Spectra from the ISOCAM CVF Spectrometer
Engelke, C. W.; Kraemer, Kathleen E.; Price, Stephan D.
We present all ISOCAM circular variable filter (CVF) spectra that cover more than one-third of the 2.2-16.5 µm spectral range of the instrument. The 364 spectra have been classified according to the classification system of Kraemer et al., as modified by Hodge et al. to account for the shorter wavelength range. Prior to classification, the s…
The Relationship between Stellar Light Distributions of Galaxies and Their Formation Histories
Conselice, Christopher J.
A major problem in extragalactic astronomy is the inability to distinguish in a robust, physical, and model-independent way how galaxy populations are physically related to each other and to their formation histories. A similar, but distinct, and also long-standing question is whether the structural appearances of galaxies, as seen through their s…
CHIANTI-An Atomic Database for Emission Lines. VI. Proton Rates and Other Improvements
Young, P. R.; Mason, H. E.; Landini, M. +3 more
The CHIANTI atomic database contains atomic energy levels, wavelengths, radiative transition probabilities, and electron excitation data for a large number of ions of astrophysical interest. Version 4 has been released, and proton excitation data are now included, principally for ground configuration levels that are close in energy. The fitting pr…
A Uniform Database of 2.4-45.4 Micron Spectra from the Infrared Space Observatory Short Wavelength Spectrometer
Sloan, G. C.; Kraemer, Kathleen E.; Price, Stephan D. +1 more
We present a complete set of all valid SWS full-scan 2.4-45.4 µm spectra processed and renormalized in as uniform a manner as possible. The processing produces a single spectrum for each observation from the 288 individual spectral segments, which are the most processed form available from the ISO archive. The spectra, and the programs used …