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Hubble Space Telescope Near-infrared Snapshot Survey of 3CR Radio Source Counterparts. II. An Atlas and Inventory of the Host Galaxies, Mergers, and Companions
O'Dea, Christopher P.; Baum, Stefi; Chiaberge, Marco +10 more
We present the second part of an H-band (1.6 µm) "atlas" of z < 0.3 3CR radio galaxies, using the Hubble Space Telescope Near Infrared Camera and Multi-Object Spectrometer (HST NICMOS2). We present new imaging for 21 recently acquired sources and host galaxy modeling for the full sample of 101 (including 11 archival)—an 87% completion rat…
Forward Modeling of Active Region Coronal Emissions. I. Methods and Testing
Lundquist, L. L.; Fisher, G. H.; McTiernan, J. M.
We present a method for simulating coronal emissions from solar active regions using observed photospheric magnetograms and an assumption about the coronal heating mechanism as input. The method invokes a "quasi-force-free" (minimized Lorentz force) coronal magnetic solution and a steady state energy balance model solved along field lines. Coronal…
Spatially Resolved Spectroscopy of Coma Cluster Early-Type Galaxies. IV. Completing the Data Set
Saglia, R. P.; Thomas, D.; Thomas, J. +3 more
The long-slit spectra obtained along the minor axis, offset major axis, and diagonal axis are presented for 12 E and S0 galaxies of the Coma Cluster drawn from a magnitude-limited sample studied before. The rotation curves, velocity dispersion profiles, and the H3 and H4 coefficients of the Hermite decomposition of the line-o…
Extended 3He-rich Periods of Solar Energetic Particles in Structured Solar Wind
Mason, G. M.; Kocharov, L.; Laivola, J. +2 more
We have surveyed helium isotope abundance data (1997-2005) measured with the Ultra-Low-Energy Isotope Spectrometer (ULEIS) on the Advanced Composition Explorer (ACE) and have found multiday periods of 3He-rich solar energetic particles (SEPs) in the energy range of ~0.4-10 MeV nucleon-1 with 3He/4He ~ 0.…
A Survey of Star Clusters in the M31 Southwest Field: UBVRI Photometry and Multiband Maps
Narbutis, D.; Vansevičius, V.; Kodaira, K. +2 more
A new survey of star clusters in the southwest field of the M31 disk based on the high-resolution Subaru Suprime-Cam observations is presented. The UBVRI aperture CCD photometry catalog of 285 objects (V lesssim 20.5 mag; 169 of them identified for the first time) is provided. Each object is supplemented with multiband color maps presented in the …
Optical Selection of Faint Active Galactic Nuclei in the COSMOS Field
Brusa, M.; Capak, P.; Schinnerer, E. +6 more
We outline a strategy to select faint (iAB < 24.5) type 1 active galactic nucleus (AGN) candidates down to the Seyfert/QSO boundary for spectroscopic targeting in the COSMOS field. Our selection process picks candidates by their nonstellar colors in uBVRizK broadband photometry from the Subaru and CFH Telescopes and morphological pro…
The Deep Lamp Project: An Investigation of the Precision and Accuracy of the Echelle Wavelength Scales of Space Telescope Imaging Spectrograph
Ayres, Thomas R.
The precision and absolute accuracy of the echelle mode wavelength scales of Space Telescope Imaging Spectrograph (STIS) are investigated. The method is to measure deep exposures of the onboard Pt/Cr-Ne hollow cathode calibration lamp. The standard deviation of emission spots from their laboratory wavelengths in a single image is a measure of the …
Optical Morphologies of Millijansky Radio Galaxies Observed by the Hubble Space Telescope and in the Very Large Array FIRST Survey
Ryan, R. E., Jr.; Windhorst, R. A.; Cohen, S. H. +2 more
We report on a statistical study of 51 radio galaxies at the millijansky flux level selected from the Faint Images of the Radio Sky at Twenty cm survey, including their optical morphologies and structure obtained with the Hubble Space Telescope (HST). Our optical imaging is significantly deeper (~2 mag) than previous studies with the superior angu…