TY - JOUR
T1 - Distance determination to NGC 55 from the planetary nebula luminosity function
AU - Van De Steene, G. C.
AU - Jacoby, G. H.
AU - Praet, C.
AU - Ciardullo, R.
AU - Dejonghe, H.
PY - 2006/9
Y1 - 2006/9
N2 - We analysed [O III], Hα, and continuum images of the Sculptor Group spiral galaxy NGC 55 obtained with the WFI instrument at the 2.2-m telescope of ESO. We identified 21 new planetary nebula candidates. We constructed the [O III]λ5007 Planetary Nebula Luminosity Function (PNLF) and determined a most likely distance of 2.30 ±0.35 Mpc. The distance to NGC 55 is a bit larger than previously determined distances, which means that the Sculptor Group is further away from the Local Group than previously thought. The PNLF distance to NGC 55 is comparable to the PNLF distance of NGC 300 (Soffner et al. 1996, A&A, 306, 9), adding support to the suggestion that these galaxies form a bound pair. There doesn't seem to be a shortage of planetary nebula candidates in this metal poor galaxy.
AB - We analysed [O III], Hα, and continuum images of the Sculptor Group spiral galaxy NGC 55 obtained with the WFI instrument at the 2.2-m telescope of ESO. We identified 21 new planetary nebula candidates. We constructed the [O III]λ5007 Planetary Nebula Luminosity Function (PNLF) and determined a most likely distance of 2.30 ±0.35 Mpc. The distance to NGC 55 is a bit larger than previously determined distances, which means that the Sculptor Group is further away from the Local Group than previously thought. The PNLF distance to NGC 55 is comparable to the PNLF distance of NGC 300 (Soffner et al. 1996, A&A, 306, 9), adding support to the suggestion that these galaxies form a bound pair. There doesn't seem to be a shortage of planetary nebula candidates in this metal poor galaxy.
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U2 - 10.1051/0004-6361:20053475
DO - 10.1051/0004-6361:20053475
M3 - Article
AN - SCOPUS:33748287086
SN - 0004-6361
VL - 455
SP - 891
EP - 896
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
IS - 3
ER -