1995A&AS..113..107K

Query : 1995A&AS..113..107K

1995A&AS..113..107K - Astron. Astrophys., Suppl. Ser., 113, 107-113 (1995/October-1)

Study of the bipolar planetary nebula NGC 2346. I. Historical photometry of the central star.

KOHOUTEK L.

Abstract (from CDS):

This first part of the study of NGC 2346 contains the photometry of the central star in the period 1904-1980 based on 487 plates as well as on UBV photoelectric measurements. After a phase of constant brightness the star declined nearly linearly by about +0.15mag between 1955 and 1978. This decrease can be interpreted as an extinction due to dust. We measured 34 stars in the vicinity of NGC 2346 in order to extend the sequence of the comparison stars as well as to derive the distance of this object using the reddening-distance method. Unfortunately, the diagram E(B-V) vers. distance shows a very large scatter and it must be considered as inconclusive. As a very preliminary estimate we derived MV=+2.7mag and a distance of D=430pc.

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Journal keyword(s): planetary nebulae: individual: NGC 2346 - stars: V651 Mon - techniques: photometric

Nomenclature: Table 4: [K95b] NN N=34 among (Nos 11-44)

Simbad objects: 35

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Number of rows : 35
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 HD 293195 * 07 07 34.7861565986 -00 28 01.301135542   11.24 10.95     A3 2 0
2 HD 293240 * 07 07 38.0744862360 -01 00 38.682473508   10.50 10.36     A0 4 0
3 HD 54192 * 07 07 52.1976542832 -00 57 11.200014900   9.84 9.72     A1IV 5 0
4 HD 293370 * 07 08 56.1596344464 -00 44 10.988771856   11.00 10.8     A3 4 0
5 HD 293369 * 07 09 00.9442408022 -00 43 58.033825140   12.03 11.42     A5 2 0
6 HD 293372 * 07 09 03.0210958224 -00 49 11.926904484   10.37 10.20     A5 4 0
7 HD 293371 * 07 09 05.3163047917 -00 44 51.619544889   11.34 10.94     G0 2 0
8 HD 293360 * 07 09 19.8330403032 -00 23 01.375240056   11.723 11.479 11.533   A5 2 0
9 NGC 2346 PN 07 09 22.5215800440 -00 48 23.610997332   11.76 11.58     A5V 592 0
10 HD 293379 * 07 09 22.5304498770 -00 54 24.171876653   11.66 11.11     K0 2 0
11 HD 293368 * 07 09 35.0567765690 -00 44 39.670497678   11.90 11.47     A0 2 0
12 HD 293378 * 07 09 39.3400865370 -00 53 44.583831697   11.65 11.01     G0 2 0
13 [K95b] 44 * ~ ~   15.74 15.44     A 1 0
14 [K95b] 45 * ~ ~   15.76 15.34     B 1 0
15 [K95b] 22 * ~ ~   12.47 12.39     A1 1 0
16 [K95b] 23 * ~ ~   13.14 12.66     F6 1 0
17 [K95b] 24 * ~ ~   13.06 12.88     A2 1 0
18 [K95b] 25 * ~ ~   13.26 12.76     F5 1 0
19 [K95b] 26 * ~ ~   13.28 12.87     F 1 0
20 [K95b] 27 * ~ ~   13.36 13.28     B 1 0
21 [K95b] 28 * ~ ~   13.25 12.81     F0 1 0
22 [K95b] 29 * ~ ~   13.55 13.32     B9 1 0
23 [K95b] 41 * ~ ~   15.12 14.73     A8 1 0
24 [K95b] 31 * ~ ~   13.91 13.52     A4 1 0
25 [K95b] 32 * ~ ~   13.65 13.22     F1 1 0
26 [K95b] 33 * ~ ~   13.15 13.05     B9.5 1 0
27 [K95b] 34 * ~ ~   13.98 13.34     F5 1 0
28 [K95b] 35 * ~ ~   13.94 13.62     B9 1 0
29 [K95b] 36 * ~ ~   14.22 13.53     F 1 0
30 [K95b] 37 * ~ ~   14.20 13.54     F1 1 0
31 [K95b] 40 * ~ ~   15.91 14.63     ~ 1 0
32 [K95b] 46 * ~ ~   16.64 16.12     B 1 0
33 [K95b] 30 * ~ ~   13.88 13.29     F3 1 0
34 [K95b] 42 * ~ ~   14.69 14.25     A8 1 0
35 [K95b] 43 * ~ ~   14.97 14.78     ~ 1 0

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