Hostname: page-component-5c6d5d7d68-lvtdw Total loading time: 0 Render date: 2024-08-20T12:17:04.875Z Has data issue: false hasContentIssue false
  • English
  • Français

Kinematically Detected Polar Rings/Disks in Blue Compact Dwarf Galaxies

Published online by Cambridge University Press:  11 July 2011

M. Koleva ,
Ph. Prugniel ,
I. Vauglin  and
A. Moiseev
A. Moiseev*
Affiliation:
Special Astrophysical Observatory, Nizhnii Arkhyz, 369167 Russia
*
e-mail: moisav@gmail.com
Get access

Abstract

Polar ring galaxies are systems with nearly orthogonally rotated components. We have found the gas on polar (or strongly inclined) orbits in two BCD galaxies using ionized gas velocity fields taken with a Fabry-Perot interferometer of the SAO RAS 6-m telescope. Our analysis shows that all ionized gas in Mrk 33 is concentrated in a compact disk (3 kpc in diameter) which rotates in the polar plane relative to the main stellar body. The gaseous disk in Mrk 370 has a more complex structure with a heavily warped innermost part. The presence of polar gaseous structures supports an idea that current the burst of star formation in these galaxies is due to the external gas accretion or merging. A possible fraction of polar structures among BCD galaxies seems to be very large (up to 10–15%).

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 48: CRAL-2010 A Universe of Dwarf Galaxies , 2011 , pp. 115 - 118
Copyright
© EAS, EDP Sciences, 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Afanasiev, V.L., & Moiseev, A.V., 2005, Astron. Lett., 31, 194 [arXiv:astro-ph/0502095]CrossRef
Amorín, R., Aguerri, J.A.L., Muñoz-Tuñón, C., & Cairós, L.M., 2009, A&A, 501, 75
Bournaud, F., & Combes, F., 2003, A&A, 401, 817
Bravo-Alfaro, H., Brinks, E., Baker, A.J., Walter, F., & Kunth, D., 2004, AJ, 127, 264CrossRef
Cairós, L.M., Vílchez, J.M., González Pérez, J.N., Iglesias-Páramo, J., & Caon, N., 2001, ApJS, 133, 321CrossRef
Cairós, L.M., Caon, N., García-Lorenzo, B., Vílchez, J.M., & Muñoz-Tuñón, C., 2002, ApJ, 577, 164CrossRef
Cox, A.L., Sparke, L.S., Watson, A.M., & van Moorsel, G., 2001, AJ, 121, 692CrossRef
Józsa, G.I.G., Oosterloo, T.A., Morganti, R., Klein, U., & Erben, T., 2009, A&A, 494, 489
Moiseev, A.V., 2008, Astrophys. Bull., 63, 201 [arXiv:0808.1696]CrossRef
Moiseev, A.V., & Egorov, O.V., 2008, Astrophys. Bull., 63, 181 [arXiv:0805.2367]CrossRef
Moiseev, A., Sil’chenko, O., & Katkov, I., 2010, in “Hunting for the dark: the hidden side of galaxy formation”, ed. V.P. Debattista & C.C. Popescu, AIP Conf. Ser., 1240, 251
Petrosian, A.R., Movsessian, T., Comte, G.Kunth, D., & Dodonov, S., 2002, A&A, 391, 487
Shalyapina, L.V., Moiseev, A.V., Yakovleva, V.A., Hagen-Thorn, V.A., & Barsunova, O.Y., 2004, Astron. Lett., 30, 583 [arXiv:astro-ph/0411457]CrossRef
Sparke, L.S., van Moorsel, G., Schwarz, U.J., & Vogelaar, M., 2009, AJ, 137, 3976CrossRef
Whitmore, B.C., Lucas, R.A., McElroy, D.B., et al., 1990, AJ, 100, 1489CrossRef