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Water Production in Comets 2001 Q4 (NEAT) and 2002 T7 (LINEAR) Determined from SOHO/SWAN Observations

Bertaux, J. -L.; Combi, M. R.; Quémerais, E. +2 more

Molecular Gas and the Host-Galaxy System of the z ~ 0.3 QSO PG 1700+518

Tacconi, L. J.; Sanders, D. B.; Frayer, D. T. +7 more

The detection of CO(1→0) emission in the massive (i.e., M _H ~ -26.13 mag), z ~ 0.3 host-galaxy system of the broad absorption line quasi-stellar object (QSO) PG1700+518 is reported. The host system has a CO luminosity of L'_CO ~ 1.4 × 10¹⁰ K km s^-1 pc², and thus a star-forming molecular gas mas…

Submillimeter Continuum Properties of Cold Dust in the Inner Disk and Outflows of M 82

Leeuw, Lerothodi L.; Robson, E. Ian

Deep submillimeter (submm) continuum imaging observations of the starburst galaxy M 82 are presented at 350, 450, 750, and 850 µm wavelengths, which were undertaken with the Submillimeter Common-User Bolometer Array (SCUBA) on the James Clerk Maxwell Telescope in Hawaii. The presented maps include a co-addition of submm data mined from the S…

Time Variability in the Outer Edge of Saturn's A-Ring Revealed by Cassini Imaging

Porco, C. C.; Spitale, J. N.

We examine the outer edge of Saturn's A-ring, whose shape is strongly influenced by the co-orbital satellites Janus and Epimetheus, during the period from day 2005-121 to day 2009-036. Twenty-four Cassini imaging data sets are used, each one giving a picture of the ring during a short interval, allowing us to explore its time variability in detail…

Ultraviolet Quasi-Stellar Objects

Bianchi, Luciana; Hutchings, John B.; Bressan, Alessandro +3 more

We present a sample of spectroscopically confirmed quasi-stellar objects (QSOs) with FUV-NUV color (as measured by Galaxy Evolution Explorer (GALEX) photometry, FUV band: 1344-1786 Å, NUV band: 1771-2831 Å) bluer than canonical QSO templates and than the majority of known QSOs. We analyze their FUV to NIR colors, luminosities, and optical spectra.…

Binary Stars with Components of Solar Type: 25 Orbits and System Masses

Docobo, J. A.; Ling, J. F.

Revised orbits and system masses are presented for the following 25 visual double stars: WDS 00593-0040 (A 1902), WDS 00596-0111 (A 1903 AB), WDS 01023+0552 (A 2003), WDS 01049+3649 (A 1515), WDS 01234+5809 (STF 115 AB), WDS 02399+0009 (A 1928), WDS 03310+2937 (A 983), WDS 06573-3530 (I 65), WDS 07043-0303 (A 519), WDS 08267+2432 (A 1746 BC), WDS …

The ACS Nearby Galaxy Survey Treasury. III. Cepheids in the Outer Disk of M81

Dolphin, Andrew E.; Williams, Benjamin F.; Yoachim, Peter +3 more

The ACS Nearby Galaxy Survey Treasury (ANGST) has acquired deep ACS imaging of a field in the outer disk of the large spiral galaxy M81. These data were obtained over a total of 20 Hubble Space Telescope orbits, providing a baseline long enough to reliably identify Cepheid variable stars in the field. Fundamental mode and first overtone types have…

A New X-Ray Analysis of the Open Cluster Blanco 1 Using Wide-Field BVI_c Photometric and Proper Motion Surveys

James, D. J.; Platais, I.; Cargile, P. A.

We perform a new analysis of the extant ROSAT and XMM-Newton X-ray surveys of the southern open cluster Blanco 1, utilizing new BVI_c photometric and proper motion data sets. In our study, we match optical counterparts to 47 X-ray sources associated with Blanco 1 cluster members, six of which were listed in previous X-ray studies as clus…

XMM-Newton and Optical Observations of Cataclysmic Variables from the Sloan Digital Sky Survey

Szkody, Paula; Schmidt, Gary D.; Mukadam, Anjum +3 more

We report on XMM-Newton and optical results for six cataclysmic variables that were selected from Sloan Digital Sky Survey (SDSS) spectra because they showed strong He II emission lines, indicative of being candidates for containing white dwarfs with strong magnetic fields. While high X-ray background rates prevented optimum results, we are able t…

A Study of the Low-Mass X-Ray Binary Dip Sources XB 1916 - 053, XB 1323 - 619, X 1624 - 490 and 4U 1746 - 371 Observed with INTEGRAL

Balman, Ş.

We detect dipping activity/modulations in the light curve of the four low-mass X-ray binaries in the 3-10 keV and 20-40 keV energy ranges. The spectral parameters derived from the fits to the International Gamma-Ray Astrophysics Laboratory data are consistent with hot coronal structures in these systems where we find a range of plasma temperatures…