1998AJ....116.1367J

Query : 1998AJ....116.1367J

1998AJ....116.1367J - Astron. J., 116, 1367-1375 (1998/September-0)

The size and age of Sakurai's planetary nebula and the temperature of its central star.

JACOBY G.H., DE MARCO O. and SAWYER D.G.

Abstract (from CDS):

We present high-resolution, spatially resolved spectra of the nebula surrounding Sakurai's object. We find the expansion velocity of the nebula to be 30.9±0.7 km.s–1, and the nebula extent to be 44" in diameter. We discuss the wide range of reported distances to Sakurai's object and the dilemma that these present, since some evidence strongly favors a short distance (1.1 kpc) while other data strongly favor a longer distance (5-8 kpc). We also present spectra of Sakurai's star centered near the λ4216 CN band that suggests the star had cooled significantly between 1996 October and 1997 May, but had not cooled further by 1997 July.

Abstract Copyright: ∼

Journal keyword(s): ISM: Planetary Nebulae: General - ISM: Planetary Nebulae: Individual: Name: Sakurai's Object - Stars: Carbon - Stars: Distances - Stars: Evolution

CDS comments: Table 1 : S216 = SH 2-216

Simbad objects: 18

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Number of rows : 18
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 PG 0057+155 HS* 00 59 56.6673699744 +15 44 13.740284580   12.02 12.32     sdB0.2VIIIpHe8 134 1
2 NGC 1514 PN 04 09 16.9855873632 +30 46 33.470907708   10.01 9.48     sdO+A0/3III 351 2
3 SH 2-216 PN 04 43 21.2638228056 +46 42 05.835192876   12.50 12.87 13.04   DAO.6 175 2
4 PN PuWe 1 PN 06 19 33.9428547048 +55 36 43.907538204   15.291 15.545 15.662 15.792 DAO.5 94 1
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 A66 31 PN 08 54 13.1641145952 +08 53 52.941471000   15.201 15.544 15.693 15.831 sdO6 142 0
8 PN A66 35 PN 12 53 32.7857105088 -22 52 22.569625704   10.52 9.69     G8III-IV+DAO 207 1
9 IRAS 15154-5258 PN 15 19 08.7609953630 -53 09 49.732929931   17.018 14.844 14.895   [WO4]pec 71 0
10 HD 161817 HB* 17 46 40.6293849144 +25 44 56.940630540 7.23 7.13 6.97     sdA2 282 0
11 V* V4334 Sgr CV* 17 52 32.69352 -17 41 08.0160           F2Ia 390 0
12 PN GJJC 1 PN 18 36 22.820 -23 55 18.26       13.52 12.44 ~ 102 0
13 M 57 PN 18 53 35.0967659112 +33 01 44.883287544   15.405 15.769 15.901 16.062 DA(O?) 868 2
14 PN A66 58 PN 19 18 20.476 +01 46 59.62           [WC4] 327 0
15 HD 182040 Pe* 19 23 10.0773440616 -10 42 11.536959456 8.77 8.14 7.05 6.25 5.80 C-Hd2II: 158 0
16 M 27 PN 19 59 36.3631850088 +22 43 16.312059552   13.749 14.089 14.247 14.405 DAO.6 605 0
17 PN A66 74 PN 21 16 52.3412522928 +24 08 51.095310720   16.91 17.11     DAO 77 1
18 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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