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

George H. Jacoby; Orsola De Marco; David G. Sawyer

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

George H. Jacoby^*, Orsola De Marco, David G. Sawyer

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1367-1375
Number of pages	9
Journal	Astronomical Journal
Volume	116
Issue number	3
Publication status	Published - Sep 1998
Externally published	Yes

Keywords

Carbon - stars
Distances - stars
Evolution
General - planetary nebulae
Individual (Sakurai's object) - stars
Planetary nebulae

Cite this

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title = "The size and age of Sakurai's planetary nebula and the temperature of its central star",

abstract = "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.",

keywords = "Carbon - stars, Distances - stars, Evolution, General - planetary nebulae, Individual (Sakurai's object) - stars, Planetary nebulae",

author = "Jacoby, {George H.} and {De Marco}, Orsola and Sawyer, {David G.}",

year = "1998",

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language = "English",

volume = "116",

pages = "1367--1375",

journal = "Astronomical Journal",

issn = "0004-6256",

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T1 - The size and age of Sakurai's planetary nebula and the temperature of its central star

AU - Jacoby, George H.

AU - De Marco, Orsola

AU - Sawyer, David G.

PY - 1998/9

Y1 - 1998/9

N2 - 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.

AB - 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.

KW - Carbon - stars

KW - Distances - stars

KW - Evolution

KW - General - planetary nebulae

KW - Individual (Sakurai's object) - stars

KW - Planetary nebulae

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M3 - Article

AN - SCOPUS:0001689311

VL - 116

SP - 1367

EP - 1375

JO - Astronomical Journal

JF - Astronomical Journal

SN - 0004-6256

IS - 3

ER -

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

Abstract

Keywords

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