2009MNRAS.398..280M

Query : 2009MNRAS.398..280M

2009MNRAS.398..280M - Mon. Not. R. Astron. Soc., 398, 280-292 (2009/September-1)

IC10: the history of the nearest starburst galaxy through its planetary nebula and HII region populations.

MAGRINI L. and GONCALVES D.R.

Abstract (from CDS):

We report the results of spectroscopic observations, obtained with the Gemini North Multi-Object Spectrograph, of nine planetary nebulae (PNe) and 15 Hii regions located in the 5.5x5.5arcmin2 inner region of the nearby starburst galaxy IC10. Twelve new candidates PNe have been discovered during our pre-imaging phase. Nine of them have been spectroscopically confirmed. The direct availability of the electron temperature diagnostics in several nebulae allowed an accurate determination of the metallicity map of IC10 at two epochs: the present-time from Hii regions and the old/intermediate-age from PNe. We found a non-homogeneous distribution of metals at both epochs, but similar average abundances were found for the two populations. The derived age-metallicity relation shows a little global enrichment interpreted as the loss of metals by supernova winds and to differential gas outflows. Finally, we analysed the production of oxygen - through the third dredge-up - in the chemical abundance patterns of the PN populations belonging to several dwarf irregular galaxies. We found that the third dredge-up of oxygen is a metallicity dependent phenomenon occurring mainly for 12 + log(O/H) ≤ 7.7 and substantially absent in IC10 PNe.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): galaxies: abundances - galaxies: evolution - Local Group - Hii regions

Nomenclature: Table 1: [MCG2003] IC 10 PN NN (Nos 17-27) added.

Simbad objects: 48

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Number of rows : 48
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 BD+25 4 * 00 08 38.1637373256 +26 05 21.112856664   10.77 10.29 10.0   F2 4 0
2 [GTA2012] 6 PN 00 19 57.510 +59 17 11.37           ~ 3 0
3 [MCG2003] IC 10 PN 18 PN? 00 19 59.418 +59 19 03.53           ~ 1 0
4 [HL90] 13 HII 00 20 02.9 +59 16 54           ~ 2 0
5 [MCG2003] IC 10 PN 19 PN? 00 20 03.103 +59 19 20.53           ~ 1 0
6 [GTA2012] 10 PN 00 20 03.900 +59 19 26.12           ~ 2 0
7 [MCG2003] IC 10 PN 26 PN? 00 20 05.721 +59 18 11.99           ~ 1 0
8 [HL90] 20 HII 00 20 10.1 +59 19 14           ~ 4 0
9 [HL90] 29 HII 00 20 11.7 +59 20 19           ~ 4 0
10 [HL90] 30 HII 00 20 12.7 +59 20 22           ~ 5 0
11 [GTA2012] 18 PN 00 20 14.740 +59 18 08.14           ~ 2 0
12 [HL90] 40 HII 00 20 15.5 +59 20 29           ~ 2 0
13 [GTA2012] 23 PN 00 20 17.170 +59 15 52.71           ~ 3 0
14 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
15 [BGR2000] Br 1 HII 00 20 17.4 +59 18 40           ~ 15 0
16 [BGR2000] Br 2 SNR 00 20 19.12 +59 18 53.5           ~ 12 0
17 [HL90] 51 HII 00 20 19.2 +59 18 02           ~ 3 0
18 [GTA2012] 28 PN 00 20 19.660 +59 18 13.03           ~ 3 0
19 [MCG2003] IC 10 PN 7 PN? 00 20 22.22 +59 20 01.6           ~ 4 0
20 [MCG2003] IC 10 PN 23 PN? 00 20 23.695 +59 19 51.99           ~ 1 0
21 [HL90] 107 HII 00 20 26.0 +59 16 53           ~ 2 0
22 [HL90] 111c HII 00 20 26.3 +59 17 57           ~ 16 0
23 [BGR2000] Br 6 HII 00 20 26.5 +59 17 30           ~ 9 0
24 [HL90] 111 HII 00 20 27.0 +59 17 29           ~ 18 1
25 [HL90] 111d HII 00 20 27.2 +59 17 53           ~ 12 0
26 [HL90] 120 HII 00 20 27.5 +59 17 36           ~ 4 0
27 [HL90] 122 HII 00 20 27.8 +59 18 11           ~ 2 0
28 [HL90] 127 HII 00 20 28.5 +59 17 50           ~ 2 0
29 [MCG2003] IC 10 PN 24 PN? 00 20 29.507 +59 16 41.38           ~ 1 0
30 [MCG2003] IC 10 PN 9 PN? 00 20 32.08 +59 16 01.6           ~ 5 0
31 [HL90] 141 HII 00 20 32.1 +59 17 32           ~ 2 0
32 [MCG2003] IC 10 PN 25 PN? 00 20 33.235 +59 16 15.00           ~ 1 0
33 NAME IC10-SySt-01 Sy* 00 20 33.59 +59 18 45.9     24.62 21.85 19.46 M8III 7 0
34 [MCG2003] IC 10 PN 27 PN? 00 20 34.002 +59 18 15.00           ~ 1 0
35 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
36 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
37 SBSG 0335-052 AGN 03 37 44.06 -05 02 40.2     16.65     ~ 500 1
38 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
39 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
40 NGC 2537 H2G 08 13 14.643 +45 59 23.25 12.18 12.50 11.69 11.66   ~ 314 2
41 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
42 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
43 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
44 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
45 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
46 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
47 HD 340611 WD* 20 34 21.8847019255 +25 03 49.750446346 10.687 11.471 11.546 11.648 11.728 DA2.4 329 0
48 NAME Local Group GrG ~ ~           ~ 9325 0

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