Using deep Chandra observations of the Hydra A galaxy cluster, we examine the metallicity structure near the central galaxy and along its powerful radio source. We show that the metallicity of the intracluster medium is enhanced by up to 0.2 dex along the radio jets and lobes compared to the metallicity of the undisturbed gas. The enhancements extend from a radius of 20 kpc from the central gal...

kaolin-based film as surround wp® was applied to ‘galaxy’ apple trees to evaluate its effects on postharvest fruit quality. following harvest, the surround wp® on the fruit skin was either wiped off, or left unwiped, then, the fruits from these treatments along with fruits from non-surround wp®-treated trees as the control were stored at 6°c for 100 days. surround wp® film application reduced w...

We investigate the relationship between black hole mass and host galaxy properties for active galaxies with the lowest black hole masses currently known in galaxy nuclei. Hubble Space Telescope imaging confirms that the host galaxies have correspondingly low luminosity; they are ∼ 1 mag below L. In terms of morphology, ∼ 60% of the sample are disk-dominated, and all of these are consistent with...

We present measurements of the emission from the centers of fifteen spiral galaxies in the P1 − 3 P0 [CI] fine-structure transition at 492 GHz. Observed galaxy centers range from quiescent to starburst to active. The intensities of neutral carbon, the J=2–1 transition of CO and the J=4–3 transition of CO are compared in matched beams. Most galaxy centers emit more strongly in [CI] than in CO, c...

We present a deep image of the radio galaxy MRC 1138 262 taken with the Hubble Space Telescope (HST) at a redshift of . The galaxy is known to have properties of a cD galaxy progenitor and be surrounded z p 2.2 by a 3 Mpc–sized structure, identified with a protocluster. The morphology shown on the new deep HST ACS image is reminiscent of a spider’s web. More than 10 individual clumpy features a...

Sub-arcsecond observations using the Very Large Array (VLA) are presented of low-luminosity H2O maser emission in M82, M51, and NGC4051. New maser features have been detected within the M82 starburst complex. They are largely associated with star-forming activity such as optically-identified starburst-driven winds, H ii regions, or the early phase of star-formation in the galaxy. H2O maser in M...

Aims. The synthesis of the cosmic X-ray background (CXB) requires a large population of Compton-thick active galactic nuclei that have not been detected so far. We probe whether bright infrared galaxies could harbor a population of Compton-thick nuclei and if they could contribute significantly. Methods. We analyzed 112 Msec of INTEGRAL observations obtained on 613 galaxies from the IRAS Revise...

We study the morphology of the central region of a sample of Active Galactic Nuclei (AGN) and a " control " sample of normal galaxies using archival observations of the WFPC2 instrument onboard the Hubble Space Telescope (HST). We use the ellipse fitting technique in order to get a good description of the inner " smooth " light distribution of the galaxy. We then divide the observed galaxy imag...

We present a detailed study of the relation between circumnuclear dust morphology, host galaxy properties, and nuclear activity in nearby galaxies. We use our sample of 123 nearby galaxies with visible–near-infrared colormaps from the Hubble Space Telescope to create well-matched, “paired” samples of 28 active and 28 inactive galaxies, as well as 19 barred and 19 unbarred galaxies, that have th...

We present the results of a study on the properties and evolution of massive (M∗ > 10 11 M⊙ ) galaxies at z ∼ 0.4 − 2 utilising Keck spectroscopy, Near-Infrared Palomar imaging, and Hubble, Chandra, and Spitzer data covering fields targeted by the DEEP2 galaxy spectroscopic survey. Our sample is K-band selected and stellar mass limited, based on wide-area near-infrared imaging from the Palomar ...