2006A&A...455..891V

Query : 2006A&A...455..891V

2006A&A...455..891V - Astronomy and Astrophysics, volume 455, 891-896 (2006/9-1)

Distance determination to NGC 55 from the planetary nebula luminosity function.

VAN DE STEENE G.C., JACOBY G.H., PRAET C., CIARDULLO R. and DEJONGHE H.

Abstract (from CDS):

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±0.35Mpc. 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., 1996A&A...306....9S), 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.

Abstract Copyright: ∼

Journal keyword(s): planetary nebulae: general - galaxies: individual: NGC 55 - galaxies: distances and redshifts - galaxies: clusters: individual: Sculptor Group

Nomenclature: Table 3: [VJP2006] NN (Nos 1-21).

CDS comments: Table 4 standard star CD -32 is CD -32 9927.

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 [VJP2006] 1 PN? 00 14 24.37 -39 07 34.3           ~ 1 0
2 [VJP2006] 2 PN? 00 14 48.36 -39 07 55.7           ~ 1 0
3 NGC 55 GiG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 778 2
4 [VJP2006] 3 PN? 00 15 07.02 -30 10 11.2           ~ 1 0
5 [VJP2006] 5 PN? 00 15 08.20 -39 07 43.2           ~ 1 0
6 [VJP2006] 4 PN? 00 15 08.39 -39 14 11.4           ~ 1 0
7 [VJP2006] 6 PN? 00 15 09.68 -39 10 46.2           ~ 1 0
8 [VJP2006] 7 PN? 00 15 15.73 -39 11 02.6           ~ 1 0
9 [VJP2006] 8 PN? 00 15 16.70 -39 13 57.6           ~ 1 0
10 [VJP2006] 9 PN? 00 15 21.12 -39 10 57.5           ~ 1 0
11 [VJP2006] 10 PN? 00 15 29.41 -39 11 30.4           ~ 1 0
12 [VJP2006] 11 PN? 00 15 31.78 -39 12 25.8           ~ 1 0
13 [VJP2006] 12 PN? 00 15 34.89 -39 12 19.8           ~ 1 0
14 [VJP2006] 13 PN? 00 15 36.48 -39 13 13.7           ~ 1 0
15 [VJP2006] 14 PN? 00 15 40.69 -39 17 23.9           ~ 1 0
16 [VJP2006] 15 PN? 00 15 52.18 -39 16 55.4           ~ 1 0
17 [VJP2006] 16 PN? 00 15 52.97 -39 13 40.3           ~ 1 0
18 [VJP2006] 17 PN? 00 15 55.08 -39 13 00.2           ~ 1 0
19 [VJP2006] 18 PN? 00 15 59.88 -39 12 37.4           ~ 1 0
20 [VJP2006] 19 PN? 00 16 11.93 -39 12 41.9           ~ 1 0
21 [VJP2006] 21 PN? 00 16 14.00 -39 15 23.7           ~ 1 0
22 [VJP2006] 20 PN? 00 16 22.02 -39 16 03.7           ~ 1 0
23 CD-34 239 PM* 00 41 30.4739854200 -33 37 32.030888686 13.138 11.969 10.525 9.619 8.741 K9V 111 0
24 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1502 2
25 NAME Scl Group GrG 01 00 06 -33 44.2           ~ 508 0
26 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17428 0
27 CD-32 9927 * 14 11 46.3227735768 -33 03 14.373268704   10.793 10.444 10.12 10.106 A4 98 0
28 CD-28 11464 Pe* 15 38 59.6479538952 -28 35 36.973634856   12.310 11.797 11.794   A 116 0
29 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 483 0
30 NAME Local Group GrG ~ ~           ~ 8387 0

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