1999ApJ...515..169J


Query : 1999ApJ...515..169J

1999ApJ...515..169J - Astrophys. J., 515, 169-190 (1999/April-2)

Chemical abundances of planetary nebulae in the bulge and disk of M31.

JACOBY G.H. and CIARDULLO R.

Abstract (from CDS):

We derive abundances and central star parameters for 15 planetary nebulae (PNe) in M31: 12 in the bulge and three in a disk field 14 kpc from the nucleus. No single abundance value characterizes the bulge stars: although the median abundances of the sample are similar to those seen for PNe in the LMC, the distribution of abundances is several times broader, spanning over one decade. None of the PNe in our sample approach the super-metal-rich ([Fe/H]∼0.25) expectations for the bulge of M31, although a few PNe in the sample of (ref???)Stasi{nacute}ska, Richer, & Mc Call come close. This [O/H] versus [Fe/H] discrepancy is likely due to a combination of factors, including an inability of metal-rich stars to produce bright PNe, a luminosity selection effect, and an abundance gradient in the bulge of M31. We show that PNe that are near the bright limit of the [O III] λ5007 planetary nebula luminosity function (PNLF) span nearly a decade in oxygen abundance and, thus, support the use of the PNLF for deriving distances to galaxies (in the work by Jacobi and collaborators) with differing metallicities. We also identify a correlation between central star mass and PN dust formation that partially alleviates any dependence of the PNLF maximum magnitude on population age. In addition, we identify a spatially compact group of five PNe having unusually high O/H; this subgroup may arise from a recent merger, but velocity information is needed to assess the true nature of the objects.

Abstract Copyright:

Journal keyword(s): galaxies: individual (M31) - ISM: Planetary Nebulae: General - Stars: Abundances - Stars: AGB and Post-AGB - Stars: Evolution

Nomenclature: Table 1: NAME FJCHP NN (Nos 51, 57, 58).

CDS comments: Table 1: objects CJFN are Ford M 31 NNN in SIMBAD.

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 - 2022
#notes
1 NAME FJCHP 51 PN 00 40 04.13 +40 21 14.1           ~ 3 0
2 NAME FJCHP 57 PN 00 40 14.20 +40 23 24.0     21.79     ~ 8 0
3 NAME FJCHP 58 PN 00 40 15.30 +40 24 13.5     22.42     ~ 7 0
4 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11842 1
5 Ford M 31 9 PN 00 42 45.15 +41 16 05.4           ~ 7 0
6 Ford M 31 455 PN 00 42 45.97 +41 18 24.8     22.76     ~ 6 0
7 Ford M 31 1 PN 00 42 46.10 +41 16 40.9     20.60     ~ 11 0
8 Ford M 31 23 PN 00 42 48.89 +41 16 55.5     21.52     ~ 10 0
9 Ford M 31 75 PN 00 42 51.40 +41 15 57.2     21.99     ~ 7 0
10 Ford M 31 470 PN 00 42 52.75 +41 16 47.4           ~ 3 0
11 Ford M 31 29 PN 00 42 53.48 +41 17 33.9     21.10     ~ 11 0
12 Ford M 31 478 PN 00 42 55.23 +41 17 12.1     21.60     ~ 5 0
13 Ford M 31 33 PN 00 42 57.80 +41 18 49.0     21.58     ~ 8 0
14 Ford M 31 27 PN 00 42 57.9995197536 +41 16 21.409035312     20.71     ~ 7 0
15 Ford M 31 177 PN 00 43 02.40 +41 16 50.2     21.99     ~ 7 0
16 Ford M 31 179 PN 00 43 03.70 +41 17 38.0     22.31     ~ 7 0
17 Ford M 31 125 PN 00 43 05.20 +41 17 38.5     21.81     ~ 8 0
18 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10264 1
19 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1514 1
20 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16074 1
21 NAME Ori Region reg 05 35 17.30 -05 23 28.0           ~ 535 0
22 NAME Centaurus A Sy2 13 25 27.6039817176 -43 01 09.493008456   8.18 6.84 6.66   ~ 4245 3
23 NAME Sgr Region reg ~ ~           ~ 38 0

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2022.07.05-23:41:37

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