Substellar Companions and the Formation of Hot Subdwarf Stars

被引：0

作者：

Geier, Stephan ^{[1
]}

Heber, Ulrich ^{[1
]}

Tillich, Alfred ^{[1
]}

Hirsch, Heiko ^{[1
]}

Kupfer, Thomas ^{[1
]}

Schaffenroth, Veronika ^{[1
]}

Classen, Lew ^{[1
]}

Maxted, Pierre F. L. ^{[2
]}

Ostensen, Roy H.

Barlow, Brad N.

Marsh, Tom R.

Gaensicke, Boris T.

Napiwotzki, Ralf

O'Toole, Simon J.

Guenther, Eike W.

机构：

[1] Univ Erlangen Nurnberg, Dr Karl Remeis Observ, Astron Inst, Sternwartstr 7, D-96049 Bamberg, Germany

[2] Keele Univ, Astrophys Grp, Keele ST5 5BG, Staffs, England

来源：

PLANETARY SYSTEMS BEYOND THE MAIN SEQUENCE | 2011年 / 1331卷

基金：

欧洲研究理事会;

关键词：

stars:binaries; stars:subdwarfs; B-STARS; SDB BINARY; PLANETS;

D O I：

10.1063/1.3556196

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We give a brief review over the observational evidence for close substellar companions to hot subdwarf stars. The formation of these core helium-burning objects requires huge mass loss of their red giant progenitors. It has been suggested that besides stellar companions substellar objects in close orbits may be able to trigger this mass loss. Such objects can be easily detected around hot subdwarf stars by medium or high resolution spectroscopy with an RV accuracy at the km s(-1)-level. Eclipsing systems of Vir type stick out of transit surveys because of their characteristic light curves. The best evidence that substellar objects in close orbits around sdBs exist and that they are able to trigger the required mass loss is provided by the eclipsing system SDSS J0820+0008, which was found in the course of the MUCHFUSS project. Furthermore, several candidate systems have been discovered.

引用

页码：163 / +

页数：3

共 33 条

[1]

Baglin A., 2006, 36th COSPAR Scientific Assembly, P3749

[2]

BEAR E, AIP C P

[3]

CLASSEN L, AIP C P

[4] High resolution spectroscopy of bright subdwarf B stars - I. Radial velocity variables [J].

Edelmann, H ;

Heber, U ;

Altmann, M ;

Karl, C ;

Lisker, T .

ASTRONOMY & ASTROPHYSICS, 2005, 442 (03) :1023-1030

[5] MODELING THE SYSTEM PARAMETERS OF 2M 1533+3759: A NEW LONGER PERIOD LOW-MASS ECLIPSING sdB plus dM BINARY [J].

For, B. -Q. ;

Green, E. M. ;

Fontaine, G. ;

Drechsel, H. ;

Shaw, J. S. ;

Dittmann, J. A. ;

Fay, A. G. ;

Francoeur, M. ;

Laird, J. ;

Moriyama, E. ;

Morris, M. ;

Rodriguez-Lopez, C. ;

Sierchio, J. M. ;

Story, S. M. ;

Strom, A. ;

Wang, C. ;

Adams, S. M. ;

Bolin, D. E. ;

Eskew, M. ;

Chayer, P. .

ASTROPHYSICAL JOURNAL, 2010, 708 (01) :253-267

[6] Hot subdwarfs in binary systems and the nature of their unseen companions [J].

Geier, S. ;

Heber, U. ;

Tillich, A. ;

Hirsch, H. ;

Edelmann, H. ;

Schaffenroth, V. ;

Kupfer, T. ;

Mueller, S. ;

Maxted, P. F. L. ;

Ostensen, R. ;

Podsiadlowski, P. ;

Marsh, T. ;

Gaensicke, B. ;

Morales-Rueda, L. ;

Nelemans, G. ;

Napiwotzki, R. ;

Guenther, E. W. ;

Carone, L. .

ASTROPHYSICS AND SPACE SCIENCE, 2010, 329 (1-2) :91-99

[7] DISCOVERY OF A CLOSE SUBSTELLAR COMPANION TO THE HOT SUBDWARF STAR HD 149382-THE DECISIVE INFLUENCE OF SUBSTELLAR OBJECTS ON LATE STELLAR EVOLUTION [J].

Geier, S. ;

Edelmann, H. ;

Heber, U. ;

Morales-Rueda, L. .

ASTROPHYSICAL JOURNAL LETTERS, 2009, 702 (01) :L96-L99

[8]

GEIER S, A A UNPUB

[9]

Geier S., 2010, ASTRON ASTROPHYS, V519, P25

[10] The origin of subdwarf B stars - I. The formation channels [J].

Han, Z ;

Podsiadlowski, P ;

Maxted, PFL ;

Marsh, TR ;

Ivanova, N .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 336 (02) :449-466

← 1 2 3 4 →