Ablation and Wind Mass-Loading in the Born-Again Planetary Nebula A 30

被引：0

作者：

Guerrero, Martin A. ^{[1
]}

Chu, You-Hua ^{[2
]}

Hamann, Wolf-Rainer ^{[3
]}

Oskinova, Lidia ^{[3
]}

Schoenberner, Detlef ^{[4
]}

Todt, Helge ^{[3
]}

Steffen, Matthias ^{[4
]}

Ruiz, Nieves ^{[1
]}

Gruendl, Robert A. ^{[2
]}

Blair, William P. ^{[5
]}

机构：

[1] CSIC, IAA, Granada, Spain

[2] Univ Illinois, Dept Astron, Urbana, IL USA

[3] Univ Potsdam, Inst Phys & Astron, Potsdam, Germany

[4] Leibniz Inst Astrophys Potsdam AIP, Potsdam, Germany

[5] Johns Hopkins Univ PHA JHU, Dept Phys & Astron, Baltimore, MD USA

来源：

PLANETARY NEBULAE: AN EYE TO THE FUTURE | 2012年 / 283期

关键词：

planetary nebulae: individual (A 30); X-rays: ISM; X-RAY-EMISSION; STARS;

D O I：

10.1017/S1743921312011519

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present XMM-Newton and Chandra observations of the born-again planetary nebula A 30. These X-ray observations reveal a bright unresolved source at the position of the central star whose X-ray luminosity exceeds by far the model expectations for photospheric emission and for shocks within the stellar wind. We suggest that a "born-again hot bubble" may be responsible for this X-ray emission. Diffuse X-ray emission associated with the petal-like features and one of the H-poor knots seen in the optical is also found. The weakened emission of carbon lines in the spectrum of the diffuse emission can be interpreted as the dilution of stellar wind by mass-loading or as the detection of material ejected during a very late thermal pulse.

引用

页码：378 / +

页数：2

共 35 条

[31] Wind fluctuations observed for the [WC9] nucleus of the planetary nebula BD+30 degrees 3639
Acker, A
Grosdidier, Y
Durand, S
ASTRONOMY & ASTROPHYSICS, 1997, 317 (01) : L51 - L53
[32] The importance of the remnant's mass for VLTP born-again times. Implications for V4334 Sgr and V605 Aql
Bertolami, M. M. Miller
Althaus, L. G.
HYDROGEN-DEFICIENT STARS, 2008, 391 : 203 - 207
[33] X-ray emission from the wind-blown bubble in the planetary nebula BD+30 degrees 3639
Arnaud, K
Borkowski, KJ
Harrington, JP
ASTROPHYSICAL JOURNAL, 1996, 462 (02): : L75 - &
[34] Self-similar evolution of wind-blown bubbles with mass loading by hydrodynamic ablation
Pittard, JM
Hartquist, TW
Dyson, JE
ASTRONOMY & ASTROPHYSICS, 2001, 373 (03) : 1043 - 1055
[35] TERMINAL VELOCITY OF WIND, MASS-LOSS, AND ABSORPTION-LINES OF THE CENTRAL STAR OF THE PLANETARY NEBULA-75 +35-DEGREES-1
FEIBELMAN, WA
BRUHWEILER, FC
ASTROPHYSICAL JOURNAL, 1989, 347 (02): : 901 - 909

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