2006MNRAS.372.1081F

Query : 2006MNRAS.372.1081F

2006MNRAS.372.1081F - Mon. Not. R. Astron. Soc., 372, 1081-1092 (2006/November-1)

Two new evolved bipolar planetary nebulae in the solar neighbourhood.

FREW D.J., PARKER Q.A. and RUSSEIL D.

Abstract (from CDS):

We present AAO/UKST Hα+[N ii] narrow-band imagery and low- and medium-resolution optical spectroscopy of RCW24 and RCW69. These nebulae were previously classified as HII regions, but we now show them to be two of the largest and nearest bipolar Type I PNe yet discovered. Distances were estimated using extinction-distance and kinematic methods, and via a new Hα surface brightness-radius relation. The adopted distances are 1.0 ±0.3kpc for RCW24 and 1.3±0.2kpc for RCW69. Both objects have enhanced nitrogen abundances, with logN/O≃+0.44 for RCW24, and logN/O=+0.33 for RCW 69. Systemic velocities and|z| distances are VLSR= +5 km/s and|z| ∼ 23pc for RCW 24, and VLSR= -33 km/s and only|z| ∼ 7pc for RCW 69. Both PNe originated from massive progenitors (>2.0-2.5M☉), as deduced from their chemical abundances, large ionized masses, small|z| distances, low peculiar velocities and relatively hot central stars. These two objects form an important addition to the small sample of evolved bipolar PNe in the solar neighbourhood.

Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): stars: AGB and post-AGB - planetary nebulae: general - planetary nebulae: individual: RCW24 - planetary nebulae: individual: RCW69

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 - 2026 		#notes
1 SH 2-188 PN 01 30 33.1778575512 +58 24 50.325485868   17.424 17.447 17.398 17.376 DAO.6 107 1
2 M 76 PN 01 42 19.6557728208 +51 34 31.534970052     17.48   17.69 DOZ 385 2
3 PN G197.4-06.4 PN 05 59 24.8669398728 +10 41 40.411774572   16.958 17.226 17.338 17.489 DA.3 54 1
4 NGC 2346 PN 07 09 22.5215800440 -00 48 23.610997332   11.76 11.58     A5V 592 0
5 PN A66 21 PN 07 29 02.7096654192 +13 14 48.587555184   15.67 15.99     DOZ 198 0
6 PN A66 24 PN 07 51 37.5535577256 +03 00 21.156882408   16.97 17.18     DA: 109 0
7 PN ARO 121 PN 07 57 51.6169237320 +53 25 16.950484848   16.775 17.128 17.288 17.501 DQ 169 1
8 [MAB97] 258.50-1.50 MoC 08 24.9 -40 20           ~ 2 0
9 RCW 24 PN 08 25 47.520 -40 13 10.01 17.25 18.24 18.21 18.25   DA 15 2
10 NAME Vela SNR 08 34.0 -45 50           ~ 1331 2
11 WRAY 16-23 PN 08 37 08.10 -39 25 07.0   14 15.59     ~ 84 1
12 BRAN 166 HII 08 38 08.0 -40 17 53           ~ 31 1
13 HD 73882 ** 08 39 09.53412 -40 25 09.2608 7.07 7.59 7.19 6.67 6.30 O8.5IV 261 1
14 PN A66 29 PN 08 40 18.9216580752 -20 54 36.615094632   18.12 18.35     ~ 44 0
15 NAME Car Arm PoG 10 00 -60.0           ~ 471 1
16 NAME Coalsack Nebula DNe 12 31 19 -63 44.6           ~ 275 0
17 NGC 4609 OpC 12 42 19.2 -62 59 36   7.32 6.9     ~ 96 0
18 HD 110625 Be* 12 44 13.8483369600 -62 29 24.199602432 10.03 10.13 9.82     B8/9(III) 23 0
19 RCW 69 PN 12 44 27.4384824528 -62 31 18.880146408           ~ 24 1
20 CVMP 1 PN 15 09 25.16 -55 33 05.7     20.00     ~ 19 0
21 NGC 6302 PN 17 13 44.5 -37 06 11           O-rich 821 2
22 PN M 1-41 PN 18 09 30.10 -24 12 26.0     15.00     ~ 69 0
23 PN A66 45 PN 18 30 15.422 -11 36 57.43           ~ 31 0
24 M 57 PN 18 53 35.0967659112 +33 01 44.883287544   15.405 15.769 15.901 16.062 DA(O?) 868 2
25 PN YM 16 PN 18 54 57.304 +06 02 31.06           ~ 32 0
26 NGC 6781 PN 19 18 28.085 +06 32 19.29           ~ 271 1
27 M 27 PN 19 59 36.3631850088 +22 43 16.312059552   13.749 14.089 14.247 14.405 DAO.6 605 0
28 PN A66 71 PN 20 32 23.216 +47 20 50.41   19.384 19.335 19.253 19.185 ~ 80 0
29 SH 1-89 PN 21 14 07.628 +47 46 22.17           ~ 70 0
30 NGC 7293 PN 22 29 38.5454047152 -20 50 13.747242408 11.894 13.158 13.524 13.689 13.898 DAO.5 983 1

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