The polar ring galaxy AM 2040-620 and its possible companion

Autores

  • Priscila Freitas Lemes Universidade do Vale do Paraíba
  • Irapuan Rodrigues Universidade do Vale do Paraíba
  • Maximiliano Faúndez Abans Laboratório Nacional de Astrofísica

Palavras-chave:

Polar ring galaxies, Physics

Resumo

Polar ring galaxies (PRGs) are peculiar systems where a gas-rich, nearly polar ring surrounds a host galaxy. They are the result of galaxy interactions that form mainly by tidal accretion of material from a gas rich donor galaxy. There is a number of formation mechanisms for PRGs: minor or major mergers, tidal accretion events, or direct cold gas accretion from filaments of the cosmic web. These objects can be used to probe the three-dimensional shape of dark matter haloes, provided that the ring is in equilibrium with the gravitational potential of the host galaxy. The polar ring galaxy, AM 2040-620, which has not yet been well studied, is the subject of this work. This galaxy contains an almost perpendicular warped ring and one possible companion galaxy to the NW. The radial velocity of this object is 3301±65 Km s^?1 and is part of a group of fifteen possible polar ring galaxies, according to the literature. In order to better understand this system, images and long slit spectra were observed with the 1.60 m OPD/LNA telescope. In the I band image, the outer parts of the ring are not symmetrical. A disturbance in the Eastern side and a faint plume were detected. Two small satellites are located to the north. The bulge is elliptical but not perfectly symmetrical in this image. The B-band image shows material that extends beyond the ring in the western and eastern directions. After processing, the B-image shows that the possible companion galaxy 2MASX J20441668-6158092 has a tidally disturbed disk. Its radial velocity is unknown, but the spectroscopy, which is still under analysis, will furnish this information.

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Biografia do Autor

Priscila Freitas Lemes , Universidade do Vale do Paraíba

Universidade do Vale do Paraíba

Irapuan Rodrigues , Universidade do Vale do Paraíba

Universidade do Vale do Paraíba

Maximiliano Faúndez Abans , Laboratório Nacional de Astrofísica

Laboratório Nacional de Astrofísica

Referências

B. C. Whitmore, R. A. Lucas, D. B. McElroy, T. Y. Steiman- Cameron, P. D. Sackett, and R. P. Olling. New observations and a photographic atlas of polar-ring galaxies. AJ, 100:1489– 1522, November 1990.

M. Arnaboldi, M. Capaccioli, G. Barbaro, L. Buson, and G. Longo. Studies of narrow polar rings around E galaxies. II - The UV spectrum of AM 2020-504. A&A, 268:103–107, February 1993.

M. Faundez-Abans and M. de Oliveira-Abans. Morphology of peculiar ring galaxies (Faundez-Abans+ 1998). VizieR Online Data Catalog, 412:90357–+, November 1997.

V. P. Reshetnikov, M. Faúndez-Abans, and M. de Oliveira- Abans. Nuclear spectra of polar-ring galaxies. MNRAS, 322:689–694, April 2001.

V. Reshetnikov, F. Bournaud, F. Combes, M. Faúndez-Abans, and M. de Oliveira-Abans. AM 1934-563: a giant spiral polarring galaxy in a triplet. A&A, 446:447–458, February 2006.

A. L. Cox and L. S. Sparke. Radio Continuum Emission in Polar Ring Galaxies. AJ, 128:2013–2021, November 2004.

J. H. van Gorkom, P. L. Schechter, and J. Kristian. H I maps of S0 galaxies with polar rings. ApJ, 314:457–475, March 1987.

M. Arnaboldi, T. Oosterloo, F. Combes, K. C. Freeman, and B. Koribalski. New H I Observations of the Prototype Polar Ring Galaxy NGC 4650A. AJ, 113:585–598, February 1997.

E. Iodice, M. Arnaboldi, G. De Lucia, J. S. Gallagher, III, L. S. Sparke, and K. C. Freeman. The Puzzle of the Polar Structure in NGC 4650A. AJ, 123:195–206, January 2002.

F. Bournaud and F. Combes. Formation of polar ring galaxies. A&A, 401:817–833, April 2003.

W. van Driel, F. Combes, M. Arnaboldi, and L. S. Sparke. A neutral hydrogen survey of polar ring galaxies. IV. Parkes observations. A&A, 386:140–148, April 2002.

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Como Citar

LEMES , Priscila Freitas; RODRIGUES , Irapuan; ABANS , Maximiliano Faúndez. The polar ring galaxy AM 2040-620 and its possible companion . Physicae Proceedings, Campinas, SP, v. 1, n. 1, p. 13–14, 2020. Disponível em: https://econtents.bc.unicamp.br/eventos/index.php/phyproceedings/article/view/3219. Acesso em: 29 mar. 2024.