Volume 386, Number 3, May II 2002
|Page(s)||869 - 873|
|Section||Cosmology (including clusters of galaxies)|
|Published online||15 May 2002|
The Local Group Census: Planetary nebulae in Sextans B*
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
Corresponding author: R. Corradi, firstname.lastname@example.org
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. 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
© ESO, 2002
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