2012ApJ...753...12K

Query : 2012ApJ...753...12K

2012ApJ...753...12K - Astrophys. J., 753, 12 (2012/July-1)

Abundances of planetary nebulae in the outer disk of M31.

KWITTER K.B., LEHMAN E.M.M., BALICK B. and HENRY R.B.C.

Abstract (from CDS):

We present spectroscopic observations and chemical abundances of 16 planetary nebulae (PNe) in the outer disk of M31. The [O III] λ4363 line is detected in all objects, allowing a direct measurement of the nebular temperature essential for accurate abundance determinations. Our results show that the abundances in these M31 PNe display the same correlations and general behaviors as Type II PNe in the Milky Way. We also calculate photoionization models to derive estimates of central star properties. From these we infer that our sample PNe, all near the bright-end cutoff of the planetary nebula luminosity function, originated from stars near 2 M☉. Finally, under the assumption that these PNe are located in M31's disk, we plot the oxygen abundance gradient, which appears shallower than the gradient in the Milky Way.

Abstract Copyright: ∼

Journal keyword(s): galaxies: abundances - galaxies: individual: M31 - ISM: abundances - planetary nebulae: general - stars: evolution

Errata: erratum vol. 768, art. 97 (2013)

Simbad objects: 23

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Number of rows : 23
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 SDSS J003751.28+404547.8 PN 00 37 51.288 +40 45 47.82     20.75     ~ 4 0
2 SDSS J003846.15+412819.2 PN 00 38 46.153 +41 28 19.23     20.60     ~ 7 0
3 SDSS J003855.02+410655.1 PN 00 38 54.981 +41 06 55.84     20.84     ~ 8 0
4 SDSS J003922.59+410657.2 PN 00 39 22.594 +41 06 57.25     20.71     ~ 10 0
5 [SCM2012b] PN026 PN 00 40 00.862 +41 04 09.03     20.71     ~ 8 0
6 MLA 219 PN 00 40 26.20 +41 20 27.8     20.56     ~ 5 0
7 MLA 243 PN 00 40 38.10 +41 16 48.0     20.88     ~ 9 0
8 Ford M 31 309 PN 00 40 58.70 +41 29 32.4     20.77     ~ 7 0
9 [AMB2011] HII 1065 PN 00 41 01.80 +40 24 20.4     20.70     ~ 8 0
10 MLA 386 PN 00 41 41.00 +41 38 14.8     20.58     ~ 5 0
11 MLA 419 PN 00 41 54.50 +41 36 16.7     20.54     ~ 6 0
12 MLA 475 PN 00 42 15.10 +41 39 10.1     20.72     ~ 5 0
13 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
14 [SCM2012b] PNh043 PN 00 42 59.00 +42 02 14.2     20.83     ~ 7 0
15 [SCM2012b] PNh047 PN 00 43 11.175 +42 20 45.57     20.69     ~ 8 0
16 SDSS J004402.34+421716.4 PN 00 44 02.341 +42 17 16.36     20.69     ~ 7 0
17 MLA 1240 PN 00 46 18.30 +41 31 09.9     20.45     ~ 6 0
18 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
19 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
20 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
21 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
22 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
23 M 94 SyG 12 50 53.0737971432 +41 07 12.900884628 9.15 8.96 8.24 7.78   ~ 1476 2

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