XMM-Newton detection of hot gas in the Eskimo Nebula: Shocked stellar wind or collimated outflows?

M. A. Guerrero; Y. H. Chu; R. A. Gruendl; M. Meixner

doi:10.1051/0004-6361:200400131

XMM-Newton detection of hot gas in the Eskimo Nebula: Shocked stellar wind or collimated outflows?

M. A. Guerrero, Y. H. Chu, R. A. Gruendl, M. Meixner

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

Abstract

The Eskimo Nebula (NGC 2392) is a double-shell planetary nebula (PN) known for the exceptionally large expansion velocity of its inner shell, ∼90 km s^-1, and the existence of a fast bipolar outflow with a line-of-sight expansion velocity approaching 200 km s^-1. We have obtained XMM-Newton observations of the Eskimo and detected diffuse X-ray emission within its inner shell. The X-ray spectra suggest thin plasma emission with a temperature of ∼2 × 10⁶ K and an X-ray luminosity of L_X = (2.6 ± 1.0) × 10³¹ (d/1150 pc) ² erg s^-1, where d is the distance in parsecs. The diffuse X-ray emission shows noticeably different spatial distributions between the 0.2-0.65 keV and 0.65-2.0 keV bands. High-resolution X-ray images of the Eskimo are needed to determine whether its diffuse X-ray emission originates from shocked fast wind or bipolar outflows.

Original language	English (US)
Pages (from-to)	L69-L72
Journal	Astronomy and Astrophysics
Volume	430
Issue number	3
DOIs	https://doi.org/10.1051/0004-6361:200400131
State	Published - Feb 2005

Keywords

ISM: planetary nebulae: general
ISM: planetary nebulae: individual: NGC 2392
Stars: winds, outflows

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1051/0004-6361:200400131

Library availability

Discover UIUC Full Text

Cite this

@article{5c0d128b675440f189923dce783860f0,

title = "XMM-Newton detection of hot gas in the Eskimo Nebula: Shocked stellar wind or collimated outflows?",

abstract = "The Eskimo Nebula (NGC 2392) is a double-shell planetary nebula (PN) known for the exceptionally large expansion velocity of its inner shell, ∼90 km s-1, and the existence of a fast bipolar outflow with a line-of-sight expansion velocity approaching 200 km s-1. We have obtained XMM-Newton observations of the Eskimo and detected diffuse X-ray emission within its inner shell. The X-ray spectra suggest thin plasma emission with a temperature of ∼2 × 106 K and an X-ray luminosity of LX = (2.6 ± 1.0) × 1031 (d/1150 pc) 2 erg s-1, where d is the distance in parsecs. The diffuse X-ray emission shows noticeably different spatial distributions between the 0.2-0.65 keV and 0.65-2.0 keV bands. High-resolution X-ray images of the Eskimo are needed to determine whether its diffuse X-ray emission originates from shocked fast wind or bipolar outflows.",

keywords = "ISM: planetary nebulae: general, ISM: planetary nebulae: individual: NGC 2392, Stars: winds, outflows",

author = "Guerrero, {M. A.} and Chu, {Y. H.} and Gruendl, {R. A.} and M. Meixner",

year = "2005",

month = feb,

doi = "10.1051/0004-6361:200400131",

language = "English (US)",

volume = "430",

pages = "L69--L72",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "3",

}

TY - JOUR

T1 - XMM-Newton detection of hot gas in the Eskimo Nebula

T2 - Shocked stellar wind or collimated outflows?

AU - Guerrero, M. A.

AU - Chu, Y. H.

AU - Gruendl, R. A.

AU - Meixner, M.

PY - 2005/2

Y1 - 2005/2

N2 - The Eskimo Nebula (NGC 2392) is a double-shell planetary nebula (PN) known for the exceptionally large expansion velocity of its inner shell, ∼90 km s-1, and the existence of a fast bipolar outflow with a line-of-sight expansion velocity approaching 200 km s-1. We have obtained XMM-Newton observations of the Eskimo and detected diffuse X-ray emission within its inner shell. The X-ray spectra suggest thin plasma emission with a temperature of ∼2 × 106 K and an X-ray luminosity of LX = (2.6 ± 1.0) × 1031 (d/1150 pc) 2 erg s-1, where d is the distance in parsecs. The diffuse X-ray emission shows noticeably different spatial distributions between the 0.2-0.65 keV and 0.65-2.0 keV bands. High-resolution X-ray images of the Eskimo are needed to determine whether its diffuse X-ray emission originates from shocked fast wind or bipolar outflows.

AB - The Eskimo Nebula (NGC 2392) is a double-shell planetary nebula (PN) known for the exceptionally large expansion velocity of its inner shell, ∼90 km s-1, and the existence of a fast bipolar outflow with a line-of-sight expansion velocity approaching 200 km s-1. We have obtained XMM-Newton observations of the Eskimo and detected diffuse X-ray emission within its inner shell. The X-ray spectra suggest thin plasma emission with a temperature of ∼2 × 106 K and an X-ray luminosity of LX = (2.6 ± 1.0) × 1031 (d/1150 pc) 2 erg s-1, where d is the distance in parsecs. The diffuse X-ray emission shows noticeably different spatial distributions between the 0.2-0.65 keV and 0.65-2.0 keV bands. High-resolution X-ray images of the Eskimo are needed to determine whether its diffuse X-ray emission originates from shocked fast wind or bipolar outflows.

KW - ISM: planetary nebulae: general

KW - ISM: planetary nebulae: individual: NGC 2392

KW - Stars: winds, outflows

UR - http://www.scopus.com/inward/record.url?scp=13444270660&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=13444270660&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:200400131

DO - 10.1051/0004-6361:200400131

M3 - Article

AN - SCOPUS:13444270660

SN - 0004-6361

VL - 430

SP - L69-L72

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 3

ER -

XMM-Newton detection of hot gas in the Eskimo Nebula: Shocked stellar wind or collimated outflows?

Abstract

Keywords

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this