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of 17
pro vyhledávání: '"Gerhard, Ortwin E."'
Autor:
Arnaboldi, Magda, Gerhard, Ortwin E.
Publikováno v:
Published in Front. Astron. Space Sci., 15 December 2022 Sec. Extragalactic Astronomy
Nearly all intragroup (IGL) and intracluster light (ICL) comes from stars that are not bound to any single galaxy but were formed in galaxies and later unbound from them. In this review we focus on the physical properties - phase space properties, me
Externí odkaz:
http://arxiv.org/abs/2212.09569
Publikováno v:
A&A 659, A80 (2022)
We investigate the metallicity, age, and orbital anatomy of the inner Milky Way, specifically focussing on the outer bar region. We integrated a sample of APOGEE DR16 inner Galaxy stars in a state of the art bar-bulge potential with a slow pattern sp
Externí odkaz:
http://arxiv.org/abs/2110.03658
Aims. We present positions and velocities for 796 planetary nebulae (PNe) in the Fornax Brightest Cluster Galaxy NGC 1316 (Fornax A). The planetary nebulae and existing kinematics are used to explore the rotation of this merger remnant and constrain
Externí odkaz:
http://arxiv.org/abs/1201.6010
Autor:
Gerhard, Ortwin E.
Our Galaxy is a barred spiral. Recent work based on the COBE NIR data implies a small bulge-bar and a disk with a short scale-length. The corotation radius of the bar is in the range 3-4.5 kpc. The stellar density distribution beyond the end of the b
Externí odkaz:
http://arxiv.org/abs/astro-ph/9902247
Autor:
Englmaier, Peter, Gerhard, Ortwin E.
We report simulations of the gas flow in the gravitational potential of the COBE NIR bulge and disk. These models lead to four--armed spiral structure between corotation of the bar and the Sun, in agreement with the observed spiral arm tangents. The
Externí odkaz:
http://arxiv.org/abs/astro-ph/9812166
We describe a non-parametric method for determining both the anisotropy and mass profiles of elliptical galaxies from velocity dispersions and velocity profile shapes along the line of sight. In this way, mass-to-light ratios out to 2-3 effective rad
Externí odkaz:
http://arxiv.org/abs/astro-ph/9811403
Akademický článek
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Autor:
Leibundgut, B., Stanghellini, L., Walsh, J. R., Douglas, N. G., Lorenzi, Flavio De, Debattista, Victor P., Gerhard, Ortwin E.
Publikováno v:
Planetary Nebulae Beyond the Milky Way; 2006, p311-315, 5p
Autor:
Gerhard, Ortwin E., Arnaboldi, Magda, Freeman, Kenneth C., Kashikawa, Nobunari, Okamura, Sadanori, Yasuda, Naoki
Publikováno v:
AIP Conference Proceedings; 2005, Vol. 804 Issue 1, p313-316, 4p, 2 Diagrams, 2 Graphs
Autor:
Weiss, Achim, Abel, Tom G., Hill, Vanessa, Argast, Dominik, Samland, Markus, Gerhard, Ortwin E., Thielemann, Friedrich-Karl
Publikováno v:
First Stars; 2000, p194-198, 5p