2001A&A...377.1042R


Query : 2001A&A...377.1042R

2001A&A...377.1042R - Astronomy and Astrophysics, volume 377, 1042-1055 (2001/10-3)

Evidence for binarity in the bipolar planetary nebulae M 1-91.

RODRIGUEZ M., CORRADI R.L.M. and MAMPASO A.

Abstract (from CDS):

We present low and high resolution long-slit spectra of three bipolar planetary nebulae (PNe) with bright central cores: A 79, He 2-428 and M 1-91. He 2-428 and M 1-91 have high density (from 103.3 to 106.5cm–3) unresolved nebular cores that indicate that strong mass loss/exchange phenomena are occurring close to their central stars. An F0 star is found at the centre of symmetry of A 79; its reddening and distance are consistent with the association of the star with the nebula. The spectrum of the core of He 2-428 shows indications of the presence of a hot star with red excess emission, probably arising in a late-type companion. A 79 is one of the richest PNe in N and He, the abundances of M 1-91 are at the lower end of the range spanned by bipolar PNe, and He 2-428 shows very low abundances, similar to those measured for halo PNe. The extended nebulae of A 79 and He 2-428 have inclined equatorial rings expanding at a velocity of ∼15km/s, with kinematical ages ≥104yrs. The association of these aged, extended nebulae with a dense nebular core (He 2-428) or a relatively late type star (A 79) is interpreted as evidence for the binarity of their nuclei.

Abstract Copyright:

Journal keyword(s): ISM: abundances - ISM: kinematics and dynamics - planetary nebulae: individual: A 79 - planetary nebulae: individual: He 2-428 - planetary nebulae: individual: M 1-91

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 45677 Be* 06 28 17.4219710352 -13 03 11.128860972 7.86 8.52 8.50 8.11 8.01 B2IV/V[e] 322 0
2 NGC 2346 PN 07 09 22.5215800440 -00 48 23.610997332   11.76 11.58     A5V 565 0
3 EM* AS 204 PN 08 53 30.8813829000 -40 03 42.779700468     14.00     ~ 84 1
4 WRAY 16-40 PN 09 18 01.3172902776 -54 39 29.165596128   14 15.00     ~ 76 0
5 THA 35-II-27 PN 10 19 32.501 -60 13 29.48     12.5     B:Ie 88 0
6 * eta Car Em* 10 45 03.5377808928 -59 41 04.051599720 6.37 7.03 6.48 4.90 4.41 OBepec 2364 0
7 PN Th 2-B PN 13 28 38.859 -63 49 46.36     15.20 15.72 14.54 ~ 37 0
8 SV* HV 6516 LP* 14 15 59.6792402016 -61 53 50.267080356     12.00     F6V 41 0
9 PN M 2-9 PN 17 05 37.96152 -10 08 32.5068           ~ 516 0
10 M 8 HII 18 03 37 -24 23.2           ~ 598 1
11 PN M 4-12 PN 19 13 05.239 +15 46 39.80           ~ 87 0
12 Hen 2-437 PN 19 32 57.6040534728 +26 52 43.087922580           ~ 93 1
13 V* RR Tel Sy* 20 04 18.5404499712 -55 43 33.153979080 9.93 11.33 10.81 11.689   M5e 528 0
14 IC 4997 PN 20 20 08.7557973960 +16 43 53.698933380   11.94 11.15     [WC7/8] 538 0
15 BD+28 4211 HS* 21 51 11.0221915656 +28 51 50.367627468 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 775 0
16 PN G102.9-02.3 PN 22 26 17.2674430392 +54 49 38.244198288   17.825 16.965 16.397 15.743 ~ 74 0
17 V* R Aqr Sy* 23 43 49.4634303216 -15 17 04.176349872   8.823 7.683 9.37   M6.5-8.5e 770 0

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2023.02.01-06:55:20

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