Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Noordermeer, E"'
Autor:
Coccato, L., Gerhard, O., Arnaboldi, M., Das, P., Douglas, N. G., Kuijken, K., Merrifield, M. R., Napolitano, N. R., Noordermeer, E., Romanowsky, A. J., Capaccioli, M., Cortesi, A., De Lorenzi, F., Freeman, K. C.
We present new planetary nebulae (PNe) positions, radial velocities, and magnitudes for 6 early-type galaxies obtained with the Planetary Nebulae Spectrograph, their two-dimensional velocity and velocity dispersion fields. We extend this study to inc
Externí odkaz:
http://arxiv.org/abs/0811.3203
Autor:
Coccato, L., Gerhard, O., Arnaboldi, M., Das, P., Douglas, N. G., Kuijken, K., Merrifield, M. R., Napolitano, N. R., Noordermeer, E., Romanowsky, A. J., Capaccioli, M., Cortesi, A., De Lorenzi, F., Freeman, K. C.
We present first results of a study of the halo kinematics for a sample of early type galaxies using planetary nebulae (PNe) as kinematical tracers. PNe allow to extend up to several effective radii (Re) the information from absorption line kinematic
Externí odkaz:
http://arxiv.org/abs/0811.2332
Autor:
Napolitano, N. R., Romanowsky, A. J., Coccato, L., Capaccioli, M., Douglas, N. G., Noordermeer, E., Gerhard, O., Arnaboldi, M., De Lorenzi, F., Kuijken, K., Merrifield, M. R., O'Sullivan, E., Cortesi, A., Das, P., Freeman, K. C.
Publikováno v:
(2009) MNRAS, 393, 329
We present new Planetary Nebula Spectrograph observations of the ordinary elliptical galaxy NGC 4494, resulting in positions and velocities of 255 PNe out to 7 effective radii (25 kpc). We also present new wide-field surface photometry from MMT/Megac
Externí odkaz:
http://arxiv.org/abs/0810.1291
In order to test the basic equations believed to dictate the dynamics of disk galaxies, we present and analyze deep two-dimensional spectral data obtained using the PPAK integral field unit for the early-type spiral systems NGC 2273, NGC 2985, NGC 38
Externí odkaz:
http://arxiv.org/abs/0805.3230
Autor:
De Lorenzi, F., Gerhard, O., Coccato, L., Arnaboldi, M., Capaccioli, M., Douglas, N. G., Freeman, K. C., Kuijken, K., Merrifield, M. R., Napolitano, N. R., Noordermeer, E., Romanowsky, A. J., Debattista, V. P.
Recent results from the Planetary Nebula Spectrograph (PN.S) survey have revealed a rapidly falling velocity dispersion profile in the nearby elliptical galaxy NGC 3379, casting doubts on whether this intermediate-luminosity galaxy has the kind of da
Externí odkaz:
http://arxiv.org/abs/0804.3350
Autor:
Noordermeer, E.
I present a method to deproject the observed intensity profile of an axisymmetric bulge with arbitrary flattening to derive the 3D luminosity density profile and to calculate the contribution of the bulge to the rotation curve. I show the rotation cu
Externí odkaz:
http://arxiv.org/abs/0801.0870
Autor:
Noordermeer, E., Merrifield, M. R., Coccato, L., Arnaboldi, M., Capaccioli, M., Douglas, N. G., Freeman, K. C., Gerhard, O., Kuijken, K., De Lorenzi, F., Napolitano, N. R., Romanowsky, A. J.
We investigate the manner in which lenticular galaxies are formed by studying their stellar kinematics: an S0 formed from a fading spiral galaxy should display similar cold outer disc kinematics to its progenitor, while an S0 formed in a minor merger
Externí odkaz:
http://arxiv.org/abs/0712.0859
Autor:
Napolitano, N. R., Romanowsky, A. J., Coccato, L., Capaccioli, M., Douglas, N. G., Noordermeer, E., Merrifield, M. R., Kuijken, K., Arnaboldi, M., Gerhard, O., Freeman, K. C., De Lorenzi, F., Das, P.
We examine the dark matter properties of nearby early-type galaxies using planetary nebulae (PNe) as mass probes. We have designed a specialised instrument, the Planetary Nebula Spectrograph (PN.S) operating at the William Herschel telescope, with th
Externí odkaz:
http://arxiv.org/abs/0709.1636
Autor:
Noordermeer, E., Verheijen, M. A. W.
We study the location of massive disk galaxies on the Tully-Fisher relation. Using a combination of K-band photometry and high-quality rotation curves, we show that in traditional formulations of the TF relation (using the width of the global HI prof
Externí odkaz:
http://arxiv.org/abs/0708.2822
Autor:
Sanders, R. H., Noordermeer, E.
Publikováno v:
Mon.Not.Roy.Astron.Soc.379:702-710,2007
We extend the MOND analysis to a sample of 17 high surface brightness, early-type disc galaxies with rotation curves derived from a combination of 21cm HI line observations and optical spectroscopic data. A number of these galaxies have asymptotic ro
Externí odkaz:
http://arxiv.org/abs/astro-ph/0703352