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

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

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26as..113..107k&link_type=abstract

Astronomy and Astrophysics Supplement, v.113, p.107

Astronomy and Astrophysics

Astrophysics

3

Planetary Nebulae: Individual: Ngc 2346, Stars: V 651 Mon, Techniques: Photometric

Scientific paper

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 M_V_=+2.7mag and a distance of D=430pc.

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