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  1. No Access

    Article

    A Closer View of the Nucleus of NGC 4314

    We present a high-resolution kinematical study of the ionized gas in the circumnuclear region of NGC 4314. Our spectra reveal the presence of a central structure (apparently a ring or torus) located at ∼ 2 arc...

    P. Pişmiş, L. Colombón, A. Mampaso, M. Manteiga in Astrophysics and Space Science (2001)

  2. No Access

    Chapter and Conference Paper

    The Effect of a Bar on the Kinematics of a Central Ring Structure in NGC4736

    We analyze the kinematics of the gaseous ring in the central. region of NGC 4736 considering an ejection mechanism for the formation of the ring in a non-axisymmetric potential. A barred spiral of strength 10 ...

    P. Pişmiş, E. Moreno in Galactic Bulges (1993)

  3. No Access

    Chapter and Conference Paper

    Kinematics of the Planetary Nebula Hb 5.

    The planetary nebula Hubble 5 shows a very striking bi-symmetry; a 180° rotation around its center would bring the object into fair coincidence. Similar to this nebula is NGC 6537 and, to a lesser degree, NGC ...

    P. Pişmiş, M. Manteiga, A. Mampaso, G. Cruz-Gonzalez in Planetary Nebulae (1993)

  4. No Access

    Chapter and Conference Paper

    The Structure and Velocity Field of A78

    We present a velocity field of the planetary nebula A78 based on three Fabry Pérot Hα (10A) interferograms taken with a focal reducer attached to the 2.1 m reflector of the Observatorio Astronómico Nacional at...

    P. Pişmiş, M. A. Moreno in Planetary Nebulae (1989)

  5. No Access

    Chapter and Conference Paper

    Hydrodynamical Models of Elliptical Galaxies

    Hydrodynamical models of elliptical galaxies can be obtained by means of Jeans’equations (see for example Ortega and de Freitas Pacheco, 1986). Following this approach, we consider a mass distribution in stead...

    E. Moreno, P. Pişmiş in Applications of Computer Technology to Dynamical Astronomy (1989)