2009A&A...495..537U


Query : 2009A&A...495..537U

2009A&A...495..537U - Astronomy and Astrophysics, volume 495, 537-546 (2009/2-4)

The Σ-d relation for planetary nebulae.

UROSEVIC D., VUKOTIC B., ARBUTINA B., ILIC D., FILIPOVIC M., BOJICIC I., SEGAN S. and VIDOJEVIC S.

Abstract (from CDS):

We present an extended analysis of the relation between radio surface brightness and diameter - the so-called Σ-D relation for planetary nebulae (PNe). We revise our previous derivation of the theoretical Σ-D relation for the evolution of bremsstrahlung surface brightness in order to include the influence of the fast wind from the central star. Different theoretical forms are derived: Σ∝D–1 for the first and second phases of evolution and Σ∝D–3 for the final stage of evolution. Also, we analyzed several different Galactic PN samples. All samples are influenced by severe selection effects, but the Malmquist bias seems to be less influential here than in the supernova remnant (SNR) samples. We derived empirical Σ-D relations for 27 sample sets using 6 updated PN papers from which an additional 21 new sets were extracted. Twenty four of these have a trivial form of β≃2. However, we obtain one empirical Σ-D relation that may be useful for determining distances to PNe. This relation is obtained by extracting a recent nearby (<1kpc) Galactic PN sample.

Abstract Copyright:

Journal keyword(s): radio continuum: general - methods: analytical - methods: statistical - radio continuum: ISM - planetary nebulae: general - ISM: supernova remnants

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 PN HaWe 5 PN 03 45 26.6815107728 +37 48 52.219399393   17.321 17.439 17.471 17.528 DA1.3 23 1
2 PN A66 7 PN 05 03 07.5326812460 -15 36 22.721664325 13.99 15.190 15.495 15.632 15.818 DAO.6 109 0
3 PN HDW 6 PN 06 40 09.279 +21 24 48.58           ~ 18 0
4 PN A66 21 PN 07 29 02.7094421237 +13 14 48.589321539   15.67 15.99     DOZ 182 0
5 PN A66 24 PN 07 51 37.5536609946 +03 00 21.157603641   16.97 17.18     ~ 99 0
6 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12299 0
7 M 57 PN 18 53 35.0969571234 +33 01 44.883146221   15.405 15.769 15.901 16.062 DA(O?) 798 2
8 M 27 PN 19 59 36.3632092274 +22 43 16.312364964   13.749 14.089 14.247 14.405 DAO.6 571 0
9 Hen 1-5 pA* 20 11 56.064360 +20 20 04.17624 11.41 10.66 9.45     G8/K0Iae 495 0
10 NGC 7293 PN 22 29 38.5453078023 -20 50 13.746093105 11.894 13.158 13.524 13.689 13.898 DAO.5 912 0
11 NAME Galactic Bulge reg ~ ~           ~ 3622 0

    Equat.    Gal    SGal    Ecl

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2021.07.25-06:38:27

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