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Start Over Author "Davies, R. L." Publication Type Books
21 results on '"Davies, R. L."'

2. Star Formation in Nearby Early-Type Galaxies: Mapping in UV, Optical, and CO

Author

Bureau, Martin, primary, Bacon, R., additional, Cappellari, M., additional, Combes, Françoise, additional, Davies, R. L., additional, de Zeeuw, P. T., additional, Emsellem, Eric, additional, Falcón-Barroso, J., additional, Jeong, H., additional, Krajnović, D., additional, Kuntschner, H., additional, McDermid, R. M., additional, Peletier, R. F., additional, Sarzi, M., additional, Shapiro, K. L., additional, van de Ven, G., additional, Yi, S. K., additional, and Young, L. M., additional

Published
2008
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3. A Mega Integral Field Spectrograph for the VLT

Author

Bacon, R., primary, Adam, G., additional, Cabrit, S., additional, Combes, F., additional, Davies, R. L., additional, Emsellem, E., additional, Ferruit, P., additional, Franx, M., additional, Gilmore, G., additional, Guiderdoni, B., additional, Lefèvre, O., additional, Morris, S., additional, Pécontal, E., additional, Prieto, E., additional, Sharpies, R., additional, van der Werf, P., additional, and de Zeeuw, P. T., additional

Published
2002
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11. A Mega Integral Field Spectrograph for the VLT

Author

Bacon, R., primary, Adam, G., additional, Cabrit, S., additional, Combes, F., additional, Davies, R. L., additional, Emsellem, E., additional, Ferruit, P., additional, Franx, M., additional, Gilmore, G., additional, Guiderdoni, B., additional, Lefévre, O., additional, Morris, S., additional, Pécontal, E., additional, Prieto, E., additional, Sharples, R., additional, Werf, P. van der, additional, and Zeeuw, P. T. de, additional

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12. The Stellar Populations of E and S0 Galaxies as Seen with SAURON

Author

Kuntschner, H., primary, Emsellem, E., additional, Bacon, R., additional, Bureau, M., additional, Cappellari, M., additional, Davies, R. L., additional, Zeeuw, T., additional, Falcón-Barroso, J., additional, Krajnović, D., additional, McDermid, R. M., additional, Peletier, R. F., additional, and Sarzi, M., additional

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13. Young Kinematically Decoupled Components in Early-Type Galaxies

Author

McDermid, R. M., primary, Emsellem, E., additional, Shapiro, K. L., additional, Bacon, R., additional, Bureau, M., additional, Cappellari, M., additional, Davies, R. L., additional, Zeeuw, P.T., additional, Falcón-Barroso, J., additional, Krajnović, D., additional, Kuntschner, H., additional, Peletier, R.F., additional, and Sarzi, M., additional

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15. A SAURON STUDY OF STARS AND GAS IN SA BULGES

Author

Falcon-Barroso, J., primary, Bacon, R., additional, Bureau, M., additional, Cappellari, M., additional, Davies, R. L., additional, de Zeeuw, P. T., additional, Emsellem, E., additional, Fathi, K., additional, Krajnovic, D., additional, Kuntschner, H., additional, McDermid, R. M., additional, Peletier, R. F., additional, and Sarzi, M., additional

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16. A SAURON STUDY OF STARS AND GAS IN SA BULGES.

Author

DE JONG, R. S., Falcon-Barroso, J., Bacon, R., Bureau, M., Cappellari, M., Davies, R. L., de Zeeuw, P. T., Emsellem, E., Fathi, K., Krajnovic, D., Kuntschner, H., McDermid, R. M., Peletier, R. F., and Sarzi, M.

Abstract

We present results from our ongoing effort to understand the morphological and kinematical properties of early-type galaxies using the integral-field spectrograph SAURON. We discuss the relation between the stellar and gas morphology and kinematics in our sub-sample of 24 representative Sa spiral bulges. We focus on the frequency of kinematically decoupled components and on the presence of star formation in circumnuclear rings. [ABSTRACT FROM AUTHOR]

Published
2007
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17. Young Kinematically Decoupled Components in Early-Type Galaxies.

Author

Leibundgut, Bruno, Kissler-Patig, Markus, Walsh, Jeremy R., Roth, Martin M., McDermid, R. M., Emsellem, E., Shapiro, K. L., Bacon, R., Bureau, M., Cappellari, M., Davies, R. L., Zeeuw, P.T., Falcón-Barroso, J., Krajnović, D., Kuntschner, H., Peletier, R.F., and Sarzi, M.

Abstract

We present results from a series of follow-up observations of a subsample of the representative SAURON survey elliptical (E) and lenticular (S0) galaxies using the OASIS integral-field spectrograph. These observations focus on the central 10 " x 10 ", with roughly double the spatial resolution of the SAURON observations. This increased spatial resolution reveals a number of interesting and previously unresolved features in the measured stellar kinematics and absorption-line strengths. We find that galaxies exhibiting the youngest global stellar populations (as measured with SAURON) often contain a distinctly young central region (on scales of a few hundred parsec or less) compared to the rest of the galaxy. Moreover, these compact, young components are found to be mostly counter-rotating with respect to the rest of the galaxy. Given that there is no well-established reason for such young components to 'prefer' counter- over co-rotation, this finding raises the following questions: How common are these small KDCs as a function of age? Why are there more young than old compact KDCs? Where are the equivalent co-rotating components? We explore these questions using simple simulated velocity fields and stellar population models, and find that the fading of the young component as it evolves, coupled with the fact that counter-rotating components are more easily detected in the velocity field, may help explain the observed trends. [ABSTRACT FROM AUTHOR]

Published
2007
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18. The Stellar Populations of E and S0 Galaxies as Seen with SAURON.

Author

Leibundgut, Bruno, Kissler-Patig, Markus, Walsh, Jeremy R., Roth, Martin M., Kuntschner, H., Emsellem, E., Bacon, R., Bureau, M., Cappellari, M., Davies, R. L., Zeeuw, T., Falcón-Barroso, J., Krajnović, D., McDermid, R. M., Peletier, R. F., and Sarzi, M.

Abstract

We present selected results from integral-field spectroscopy of 48 earlytype galaxies observed as part of the SAURON survey. Maps of the Hβ Fe5015, Mgb and Fe5270 indices in the Lick/IDS system were derived for each of the survey galaxies. The metal line strength maps show generally negative gradients with increasing radius roughly consistent with the morphology of the light profiles. Remarkable deviations from this general trend exist, particularly the Mg b isoindex contours appear to be flatter than the isophotes of the surface brightness for about 40% of our galaxies without significant dust features. Generally these galaxies exhibit significant rotation. We infer from this that the fast-rotating component features a higher metallicity and/or an increased Mg/Fe ratio, as compared to the galaxy as a whole. We also use the line strength maps to compute average values integrated over circular apertures of one effective radius, and derive luminosity weighted ages and metallicities. The lenticular galaxies show a wide range in age and metallicity estimates, while elliptical galaxies tend to occupy regions of older stellar populations. [ABSTRACT FROM AUTHOR]

Published
2007
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19. SAURON Observations of Sa Bulges: The Formation of a Kinematically Decoupled Core in NGC5953.

Author

Leibundgut, Bruno, Kissler-Patig, Markus, Walsh, Jeremy R., Roth, Martin M., Falcón-Barroso, J., Bacon, R., Bureau, M., Cappellari, M., Davies, R. L., Zeeuw, P.T, Emsellem, E., Fathi, K., Krajnović, D., Kuntschner, H., McDermid, R.M, Peletier, R. F., and Sarzi, M.

Abstract

We present results from our ongoing effort to understand the nature and evolution of nearby galaxies using the SAURON integral-field spectrograph. In this proceeding we focus on the study of the particular case formed by the interacting galaxies NGC5953 and NGC5954. We present stellar and gas kinematics of the central regions of NGC5953. We use a simple procedure to determine the age of the stellar populations in the central regions and argue that we may be witnessing the formation of a kinematically decoupled component (hereafter KDC) from cold gas being acquired during the ongoing interaction with NGC5954. [ABSTRACT FROM AUTHOR]

Published
2007
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20. A Mega Integral Field Spectrograph for the VLT.

Author

Bergeron, Jaqueline, Monnet, Guy, Bacon, R., Adam, G., Cabrit, S., Combes, F., Davies, R. L., Emsellem, E., Ferruit, P., Franx, M., Gilmore, G., Guiderdoni, B., Lefévre, O., Morris, S., Pécontal, E., Prieto, E., Sharples, R., Werf, P. van der, and Zeeuw, P. T. de

Published
2002
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