2003A&A...407...51M

Query : 2003A&A...407...51M

2003A&A...407...51M - Astronomy and Astrophysics, volume 40751-59 (2003/8-3)

The Local Group Census: Planetary nebulae in IC 10, Leo A and Sextans A.

MAGRINI L., CORRADI R.L.M., GREIMEL R., LEISY P., LENNON D.J., MAMPASO A., PERINOTTO M., POLLACCO D.L., WALSH J.R., WALTON N.A. and ZIJLSTRA A.A.

Abstract (from CDS):

In the framework of our narrow-band survey of the Local Group galaxies, we present the results of the search for planetary nebulae (PNe) in the dwarf irregular galaxies IC 10, Leo A and Sextans A. Using the standard on-band/off-band technique, sixteen new candidate PNe have been discovered in the closest starburst galaxy, IC 10. The optical size of this galaxy is estimated to be much larger than previously thought, considering the location of the new PNe in an area of 3.6kpcx2.7kpc. We also confirm the results of previous studies for the other two dwarf irregular galaxies, with the detection of one candidate PN in Leo A and another one in Sextans A. We review the number of planetary nebulae discovered in the Local Group to date and their behaviour with metallicity. We suggest a possible fall in the observed number of PNe when [Fe/H]≪-1.0, which might indicate that below this point the formation rate of PNe is much lower than for stellar populations of near Solar abundances. We also find non-negligible metallicity effects on the [O III] luminosity of the brightest PN of a galaxy.

Abstract Copyright: ∼

Journal keyword(s): planetary nebulae: general - galaxies: individual: Leo A, Sextans A, IC 10

Nomenclature: Table 1: [MCG2003] IC 10 PN NN (Nos 1-16), [MCG2003] Leo A PN N (No. 1), [MCG2003] Sex A PN N (No. 1).

Simbad objects: 35

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Number of rows : 35
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [MCG2003] IC 10 PN 1 PN? 00 18 44.610 +59 17 47.83           ~ 2 0
2 [MCG2003] IC 10 PN 2 PN? 00 19 04.400 +59 17 04.82           ~ 2 0
3 [MCG2003] IC 10 PN 3 PN? 00 19 13.640 +59 14 44.55           ~ 2 0
4 [MCG2003] IC 10 PN 4 PN? 00 20 06.660 +59 15 22.18           ~ 2 0
5 [GTA2012] 23 PN 00 20 17.170 +59 15 52.71           ~ 3 0
6 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
7 [MCG2003] IC 10 PN 6 PN? 00 20 21.14 +59 21 26.3           ~ 2 0
8 [MCG2003] IC 10 PN 7 PN? 00 20 22.22 +59 20 01.6           ~ 4 0
9 [MCG2003] IC 10 PN 8 PN? 00 20 28.82 +59 07 21.4           ~ 2 0
10 [MCG2003] IC 10 PN 9 PN? 00 20 32.08 +59 16 01.6           ~ 5 0
11 [MCG2003] IC 10 PN 10 PN? 00 20 40.890 +59 18 50.15           ~ 2 0
12 [MCG2003] IC 10 PN 11 PN? 00 20 42.950 +59 16 30.90           ~ 2 0
13 [MCG2003] IC 10 PN 12 PN? 00 20 46.28 +59 21 04.5           ~ 2 0
14 [MCG2003] IC 10 PN 13 PN? 00 20 49.060 +59 18 33.16           ~ 2 0
15 [MCG2003] IC 10 PN 14 PN? 00 20 50.96 +59 20 23.6           ~ 2 0
16 [MCG2003] IC 10 PN 15 PN? 00 21 09.800 +59 16 59.70           ~ 2 0
17 [MCG2003] IC 10 PN 16 PN? 00 21 11.200 +59 16 11.71           ~ 2 0
18 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
19 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
20 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
21 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
22 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
23 BD+52 913 WD* 05 05 30.6180977592 +52 49 51.919301604 10.25 11.44 11.69 11.93 12.108 DA.8 1153 0
24 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
25 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
26 [MCG2003] Leo A PN 1 PN? 09 59 31.66 +30 45 28.0           ~ 2 0
27 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
28 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
29 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
30 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
31 [MCG2003] Sex A PN 1 PN? 10 11 01.58 -04 41 22.9           ~ 5 0
32 BD+33 2642 pA* 15 51 59.8854348048 +32 56 54.329485272 9.806 10.61 10.73 10.884 10.961 O7p 456 0
33 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
34 IC 5117 PN 21 32 30.96912 +44 35 47.5404           ~ 310 1
35 NAME Local Group GrG ~ ~           ~ 9325 0

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