2003ApJ...585..475H

Query : 2003ApJ...585..475H

2003ApJ...585..475H - Astrophys. J., 585, 475-481 (2003/March-1)

Neutral carbon in post-asymptotic giant branch stars and planetary nebulae.

HASEGAWA T.I. and KWOK S.

Abstract (from CDS):

The 492 GHz (3P1⟶3P0) fine-structure line of neutral atomic carbon (C I) has been observed in the planetary nebulae (PNe) NGC 6302, IRAS 21282+5050, and NGC 7027, and in the protoplanetary nebula (PPN) AFGL 2688. The estimated C I/CO abundance ratio is higher for a more evolved object, consistent with a trend that the C I/CO ratio increases with the evolution of a post-asymptotic giant branch system from a PPN to a PN. Nondetections are also reported on 11 PPNe and extreme carbon stars. The upper limits placed on these objects suggest that they have C I abundances lower than the level found in the PPN AFGL 2688, again consistent with an increasing C I/CO ratio with evolution.

Abstract Copyright: ∼

Journal keyword(s): Stars: Circumstellar Matter - planetary nebulae: individual (NGC 6302, IRAS 21282+5050) - Stars: AGB and Post-AGB

Simbad objects: 25

goto Full paper

goto View the references in ADS

Number of rows : 25
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 IRAS Z02229+6208 pA* 02 26 41.7882689568 +62 21 21.981286008   14.69 12.00 11.16 8.92 G8-K0_0-Ia: 65 0
2 IRAS 04296+3429 pA* 04 32 56.9743899192 +34 36 12.459816288   16.13 14.09 13.64 11.64 G0Ia 149 0
3 RAFGL 618 pA* 04 42 53.6242032600 +36 06 53.400902220   16.32   12.59   C-rich 1027 0
4 * alf Ori s*r 05 55 10.30536 +07 24 25.4304 4.38 2.27 0.42 -1.17 -2.45 M1-M2Ia-Iab 1789 0
5 HD 44179 pA* 06 19 58.2185496 -10 38 14.706068 9.51 9.33 9.02     B9Ib/II 800 0
6 NGC 2346 PN 07 09 22.5215800440 -00 48 23.610997332   11.76 11.58     A5V 592 0
7 HD 56126 pA* 07 16 10.2590823192 +09 59 47.954735376   9.20 8.32     F0/5Ia 330 0
8 NGC 2440 PN 07 41 55.34603 -18 12 30.4117   11.469 10.104     ~ 665 2
9 IRC +10216 C* 09 47 57.40632 +13 16 43.5648           C9,5e 2455 0
10 V* V Hya C* 10 51 37.2615873024 -21 15 00.333928044   12.23 6.80 7.42   C-N:6 391 0
11 NGC 6302 PN 17 13 44.5 -37 06 11           O-rich 821 2
12 RAFGL 6815S pA* 17 18 19.8040606320 -32 27 21.547417932           G2I 153 0
13 RAFGL 5385 pA* 17 47 13.48944 -24 12 51.4404           F4I 79 0
14 M 57 PN 18 53 35.0967659112 +33 01 44.883287544   15.405 15.769 15.901 16.062 DA(O?) 868 2
15 IRAS 20000+3239 LP* 20 01 59.5133268456 +32 47 32.799122916   16.13 13.39 11.80 10.32 ~ 84 0
16 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 892 1
17 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
18 [D75b] Em* 21-021 PN 21 29 58.4711786760 +51 04 00.323924520   15.66 14.20 13.89   O7(f)/[WC11] 259 0
19 RAFGL 5625S C* 21 33 22.79496 +56 44 34.5228           C 62 0
20 V* V448 Lac pA* 22 24 31.4283564864 +43 43 10.978781916 11.22 10.61 9.69     F7I 115 0
21 HD 235858 pA* 22 29 10.3748806056 +54 51 06.344572284   11.40 9.52 8.47 7.34 G5Ia 264 0
22 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
23 IRAS 22574+6609 pA* 22 59 18.3496246536 +66 25 47.940897972       19.2   A1-6I 56 0
24 RAFGL 3068 C* 23 19 12.60744 +17 11 33.1332           C 288 1
25 IRAS 23304+6147 pA* 23 32 44.7858431592 +62 03 49.090372272   15.36 12.99 12.23 10.50 G2Ia 121 0

To bookmark this query, right click on this link: simbad:objects in 2003ApJ...585..475H and select 'bookmark this link' or equivalent in the popup menu