EDP Sciences
Free Access
Volume 386, Number 3, May II 2002
Page(s) 869 - 873
Section Extragalactic astronomy
DOI https://doi.org/10.1051/0004-6361:20020296
Published online 15 May 2002

A&A 386, 869-873 (2002)
DOI: 10.1051/0004-6361:20020296

The Local Group Census: Planetary nebulae in Sextans B

L. Magrini1, R. L. M. Corradi2, N. A. Walton2, A. A. Zijlstra3, D. L. Pollacco4, J. R. Walsh5, M. Perinotto1, D. J. Lennon2 and R. Greimel2

1  Dipartimento di Astronomia e Scienza dello Spazio, Universitá di Firenze, L.go E. Fermi 2, 50125 Firenze, Italy
2  Isaac Newton Group of Telescopes, Apartado de Correos 321, 38700 Santa Cruz de La Palma, Canarias, Spain
3  Physics Department, UMIST, PO Box 88, Manchester M60 1QD, UK
4  School of Pure and Applied Physics, Queen's University Belfast, Belfast BT7 9NN, Northern Ireland, UK
5  ST-ECF, E.S.O., Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany

(Received 21 December 2001 / Accepted 26 February 2002)

Five planetary nebulae (PNe) have been discovered in the nearby dwarf irregular galaxy. Emission line images were obtained using the Wide Field Camera of the 2.5 m Isaac Newton Telescope (INT) at La Palma (Spain). The candidate PNe were identified by their point-like appearance and relatively strong [O III] emission-line fluxes. They are located within a galactocentric distance of 2.8 arcmin, corresponding to 1.1 kpc at the distance of Sextans B . Luminosities are in the range 1800-5600 $\,L_\odot$. Sextans B is one of the smallest dwarf irregular galaxies with a PN population. The number of PNe detected suggest an enhanced star formation rate between 1 and 5 Gyr ago.

Key words: planetary nebulae: individual -- galaxies: individual: Sextans B

Offprint request: R. Corradi, rcorradi@ing.iac.es

SIMBAD Objects

© ESO 2002

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