2000ApJS..129..295G

Query : 2000ApJS..129..295G

2000ApJS..129..295G - Astrophys. J., Suppl. Ser., 129, 295-313 (2000/July-0)

ROSAT observations of X-ray emission from planetary nebulae.

GUERRERO M.A., CHU Y.-H. and GRUENDL R.A.

Abstract (from CDS):

We have searched the entire ROSAT archive for useful observations to study X-ray emission from Galactic planetary nebulae (PNs). The search yields a sample of 63 PNs, which we call the ROSAT PN sample. About 20%-25% of this sample show X-ray emission; these include 13 definite detections and three possible detections (at a 2 σ level). All X-ray sources in these PNs are concentrated near the central stars. Only A30, BD +30°3639, and NGC 6543 are marginally resolved by the ROSAT instruments.

Three types of X-ray spectra are seen in PNs. Type 1 consists of only soft X-ray emission (<0.5 keV), peaks at 0.1-0.2 keV, and can be fitted by blackbody models at temperatures 1-2x105 K. Type 2 consists of harder X-ray emission, peaks above 0.5 keV, and can be fitted by thin plasma emission models at temperatures of a few times 106 K. Type 3 is a composite of a bright type 1 component and a fainter type 2 component.

Unresolved soft sources with type 1 spectra or the soft component of type 3 spectra are most likely photospheric emission from the hot central stars. Absorption cross sections are large for these soft-energy photons; therefore, only large, tenuous, evolved PNs with hot central stars and small absorption column densities have been detected.

The origin of hard X-ray emission from PNs is uncertain. PNs with type 2 spectra are small, dense, young nebulae with relatively cool ({Lt}105 K) central stars, while PNs with type 3 X-ray spectra are large, tenuous, evolved nebulae with hot central stars. The hard X-ray luminosities are also different between these two types of PNs, indicating perhaps different origins of their hard X-ray emission. Future Chandra and XMM observations with high spatial and spectral resolution will help to understand the origin of hard X-ray emission from PNs.


Abstract Copyright: ∼

Journal keyword(s): ISM: Planetary Nebulae: General - Stars: AGB and Post-AGB - X-Rays: ISM - X-Rays: Stars

Simbad objects: 81

goto Full paper

goto View the references in ADS

Number of rows : 81
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 NGC 246 PN 00 47 03.3420341616 -11 52 18.971126076 10.15 11.52 11.76 12.18   PG1159 489 0
2 PN K 3-92 PN 02 03 41.171 +64 57 37.88           ~ 48 0
3 NGC 1360 PN 03 33 14.6468527944 -25 52 17.977647900   10.95 11.16     sdO 291 0
4 NGC 1535 PN 04 14 15.7689913368 -12 44 21.932484324   12.01 12.82     sdO3: 518 1
5 RAFGL 618 pA* 04 42 53.6242032600 +36 06 53.400902220   16.32   12.59   C-rich 1027 0
6 IC 418 PN 05 27 28.2059533560 -12 41 50.282287764   9.405 9.010 10.118   O7fp 1059 2
7 PN K 1-27 PN 05 57 02.1748457640 -75 40 22.478040120     16.04 16.27 16.41 sdOHe 91 0
8 PN A66 12 PN 06 02 20.045 +09 39 14.09           ~ 76 0
9 PN G183.8+05.5 PN 06 16 11.347 +28 22 10.97           ~ 10 0
10 PN A66 15 PN 06 27 02.0384151408 -25 22 49.700001252   15.41 15.72     sdOp 113 1
11 NGC 2371 PN 07 25 34.6883929008 +29 29 26.430252072   14.48 13.5     Oe 384 0
12 PN A66 21 PN 07 29 02.7096654192 +13 14 48.587555184   15.67 15.99     DOZ 198 0
13 NGC 2392 PN 07 29 10.7671398096 +20 54 42.474888072     9.68     O6f 740 2
14 WRAY 16-20 SNR 08 23 40.69 -43 12 47.1     14.00     ~ 13 3
15 PN A66 30 PN 08 46 53.4639874872 +17 52 46.369394580   14.23 14.30 13.47   [WC5] 431 0
16 PN A66 31 PN 08 54 13.1641145952 +08 53 52.941471000   15.201 15.544 15.693 15.831 sdO6 142 0
17 PN A66 33 PN 09 39 09.1418645928 -02 48 30.486998664           DAO 151 0
18 WRAY 16-74 PN 10 35 45.7221637392 -64 19 11.562575952     14.50     ~ 72 0
19 PN Pe 1-1 PN 10 38 27.5856481368 -56 47 07.226821644   15.855 14.178 15.394   [WC4/5] 108 1
20 M 97 PN 11 14 47.7122947800 +55 01 08.482832076   15.414 15.777 15.960 16.194 ~ 356 2
21 WRAY 16-98 PN 11 39 11.1965906088 -68 52 08.982848784     13.70     ~ 57 0
22 NGC 4361 PN 12 24 30.7510527528 -18 47 05.567336304   12.8 13.2     [WC] 407 0
23 PN LoTr 5 PN 12 55 33.7471108416 +25 53 30.559286040   9.72 8.88     G5III-IV 223 0
24 PN H 4-1 PN 12 59 27.78107 +27 38 10.6612           OB 167 0
25 PN A66 36 PN 13 40 41.3455430568 -19 52 55.324843824   11.27 11.57     sdO7 174 0
26 PN Pe 2-8 PN 15 23 42.8825264040 -57 09 25.218026424     15.50     ~ 79 0
27 PN G326.1-01.9 PN 15 52 59.209 -56 24 27.19           ~ 22 0
28 NGC 6210 PN 16 44 29.5191019368 +23 47 59.421958296   12.3 11.7     Of/[WR] 597 0
29 ESO 332-18 PN 17 04 33.7942050162 -37 53 14.835292192           ~ 38 0
30 NAME Kepler's SN SNR 17 30 40.51 -21 29 14.4           ~ 851 3
31 PN Al 2-J PN 17 35 35.503 -27 24 06.49           ~ 25 1
32 PN TrBr 4 PN 17 35 43.453 -30 21 26.42           ~ 21 0
33 PN Th 3-33 PN 17 35 48.123 -27 43 20.38           ~ 36 0
34 PN Th 3-35 PN 17 38 42.2436647070 -28 42 46.211180061           ~ 34 0
35 ESO 455-139 PN 17 39 02.9171861568 -28 56 35.634293412     17.2     ~ 74 0
36 PN Fg 2 PN 17 39 19.86 -44 09 37.5   12.5 12.50     ~ 40 0
37 IRAS 17395-2950 HII 17 42 42.535 -29 51 34.94     14.07     B 24 1
38 PN Hb 5 PN 17 47 56.20 -29 59 39.6   10.50 10.78     ~ 274 0
39 PN G003.9+01.6 PN 17 48 28.465 -24 41 25.07           ~ 24 0
40 Terz N 2337 PN 17 48 45.272 -26 43 28.80           ~ 14 0
41 PN M 3-43 PN 17 50 24.34 -29 25 18.5           ~ 57 0
42 PN Bl 3-15 PN 17 52 35.87 -29 06 38.6           ~ 37 0
43 PN M 1-30 PN 17 52 58.95 -34 38 22.6   16.6 16.4     ~ 117 0
44 PN Al 2-Q PN 17 53 25.040 -29 17 08.73           ~ 23 0
45 PN Bl O PN 17 53 49.7366933616 -28 59 11.534113500       16.23   ~ 36 0
46 PN H 1-43 PN 17 58 14.4398681232 -33 47 37.621641912     15.10     [WC11] 86 0
47 NGC 6543 PN 17 58 33.4039587288 +66 37 58.750734000   11.09 11.28     [WC] 1197 2
48 PN Fg 3 PN 18 00 11.8162949280 -38 49 52.619928204   12.80 11.18     ~ 101 1
49 PN M 3-22 PN 18 02 19.27591 -30 14 26.2261           ~ 68 0
50 PN ShWi 5 Sy* 18 03 53.6911897560 -29 51 22.128584040       15.78   ~ 37 2
51 PN M 1-37 PN 18 05 25.8092901000 -28 22 04.282489956     14.70     [WC11]? 135 0
52 PN H 1-59 PN 18 11 29.263 -27 46 15.69   14.5       ~ 71 0
53 NGC 6565 PN 18 11 52.4858232888 -28 10 42.421241244   12.5 12.2 12.12   PN 233 0
54 NGC 6572 PN 18 12 06.3181909152 +06 51 13.027935240   9.3 10.8     [WC] 761 0
55 PN M 2-32 PN 18 14 50.6059044528 -32 36 55.158494076   13.1 13.70     ~ 49 1
56 PN M 2-34 PN 18 17 15.90 -23 58 53.7     15.00     [WC] 58 0
57 PN K 1-16 PN 18 21 52.1086837968 +64 21 53.406292104   14.44 14.96 15.26   PG1159 258 0
58 PN KFL 19 PN 18 23 08.890 -29 43 25.17     16.3     ~ 26 0
59 PN M 3-53 PN 18 24 07.923 -11 06 42.35           ~ 31 0
60 PN M 3-28 PN 18 32 41.288 -10 05 50.03   15.6       ~ 96 0
61 PN M 3-55 PN 18 33 14.773 -10 15 19.45           ~ 46 0
62 PN GJJC 1 PN 18 36 22.820 -23 55 18.26       13.52 12.44 ~ 102 0
63 PN WeSb 4 PN 18 50 40.302 -01 03 11.16           ~ 29 0
64 PN M 2-47 PN 19 13 34.5440854320 +04 38 04.013922588           O3-6 63 0
65 PN K 3-30 PN 19 16 27.6978815786 +05 13 19.399015788           ~ 41 0
66 PN A66 59 PN 19 18 40.003 +19 34 32.95           ~ 45 0
67 HD 184738 PN 19 34 45.2337620448 +30 30 58.950651240   10.41 10.44     [WC9] 976 0
68 PN A66 63 PN 19 42 10.2896588688 +17 05 14.458509132           sdO+G: 222 1
69 PN PC 23 PN 19 51 52.72 +32 59 17.8           ~ 34 0
70 PN K 4-41 PN 19 56 34.027 +32 22 12.96           ~ 47 0
71 M 27 PN 19 59 36.3631850088 +22 43 16.312059552   13.749 14.089 14.247 14.405 DAO.6 605 0
72 EM* AS 389 Em* 20 12 24.0202254000 +40 45 29.436703596   12       ~ 39 0
73 PN KjPn 2 PN 20 15 22.19 +40 34 44.6   19.8 17.6     ~ 27 0
74 PN A66 69 PN 20 19 58.343 +38 24 02.16           ~ 36 0
75 NGC 6905 PN 20 22 22.9919225472 +20 06 16.285052088   16.3 14.5     [WC3] 362 0
76 PN K 3-78 PN 20 45 22.6885835640 +50 22 39.860086116           ~ 36 0
77 NGC 7009 PN 21 04 10.8155187648 -11 21 48.580157556   12.48 12.07     ~ 1020 1
78 PN Ps 1 PN 21 29 59.3972661392 +12 10 26.275343735   13.39 14.06     sdO 295 0
79 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
80 PN Jn 1 PN 23 35 53.3214838680 +30 28 06.336745212   15.52 15.62     DOZ 110 0
81 PN K 1-20 PN 23 39 10.842 +48 12 29.07           ~ 40 0

To bookmark this query, right click on this link: simbad:objects in 2000ApJS..129..295G and select 'bookmark this link' or equivalent in the popup menu