Searching for binary central stars of planetary nebulae with Kepler

被引：3

作者：

Douchin, Dimitri ^{[1
,2
,3
]}

Jacoby, George H. ^{[4
]}

De Marco, Orsola ^{[1
,2
]}

Howell, Steve B. ^{[5
]}

Kronberger, Mattias ^{[6
]}

机构：

[1] Macquarie Univ, Res Ctr Astron Astrophys & Astrophoton, N Ryde, NSW, Australia

[2] Macquarie Univ, Dept Phys & Astron, N Ryde, NSW, Australia

[3] Univ Montpellier 2, GRAAL, Montpellier, France

[4] Giant Magellan Telescope, Tucson, AZ USA

[5] NASA, Ames Res Ctr, Mountain View, CA USA

[6] Deep Sky Hunters Collaborat, Hong Kong, Hong Kong, Peoples R China

来源：

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

关键词：

binaries: close; planetary nebulae: individual (A 61; NCC; 6826; NGC; 4742; Kn; 61; Pa; 5; PaTe; 1);

D O I：

10.1017/S1743921312011349

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Kepler Observatory offers unprecedented photometric precision (<1 mmag) and cadence for monitoring the central stars of planetary nebulae, allowing the detection of tiny periodic light curve variations, a possible signature of binarity. With this precision free from the observational gaps dictated by weather and lunar cycles, we are able to detect companions at much larger separations and with much smaller radii than ever before. We have been awarded observing time to obtain light-curves of the central stars of the six confirmed and possible planetary nebulae in the Kepler field, including the newly discovered object Kn 61, at cadences of both 30 min and 1 min. Of these six objects, we could confirm for three a. periodic variability consistent with binarity. Two others are variables, but the initial data set presents only weak periodicities. For the central star of Kn 61, Kepler data will be available in the near future.

引用

页码：344 / +

页数：2

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