Substellar companions and the formation of hot subdwarf stars

Stephan Geier; Ulrich Heber; Alfred Tillich; Heiko Hirsch; Thomas Kupfer; Veronika Schaffenroth; Lew Classen; Pierre F. L. Maxted; Roy H. Ostensen; Brad N. Barlow; Tom R. Marsh; Boris T. Gaensicke; Ralf Napiwotzki; Simon J. O'Toole; Eike W. Guenther

doi:10.1063/1.3556196

Substellar companions and the formation of hot subdwarf stars

Stephan Geier, Ulrich Heber, Alfred Tillich, Heiko Hirsch, Thomas Kupfer, Veronika Schaffenroth, Lew Classen, Pierre F. L. Maxted, Roy H. Ostensen, Brad N. Barlow, Tom R. Marsh, Boris T. Gaensicke, Ralf Napiwotzki, Simon J. O'Toole, Eike W. Guenther

Centre for Astrophysics Research (CAR)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

35 Downloads (Pure)

Abstract

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.

Original language	English
Title of host publication	Planetary systems beyond the main sequence
Editors	S Schuh, H Drechsel, U Heber
Place of Publication	Melville
Publisher	American Institute of Physics (AIP)
Pages	163-169
Number of pages	7
ISBN (Print)	978-0-7354-0886-9
DOIs	https://doi.org/10.1063/1.3556196
Publication status	Published - 2011

Keywords

stars:binaries
stars:subdwarfs

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10.1063/1.3556196

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"Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics."
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Geier, S., Heber, U., Tillich, A., Hirsch, H., Kupfer, T., Schaffenroth, V., Classen, L., Maxted, P. F. L., Ostensen, R. H., Barlow, B. N., Marsh, T. R., Gaensicke, B. T., Napiwotzki, R., O'Toole, S. J., & Guenther, E. W. (2011). Substellar companions and the formation of hot subdwarf stars. In S. Schuh, H. Drechsel, & U. Heber (Eds.), Planetary systems beyond the main sequence (pp. 163-169). American Institute of Physics (AIP). https://doi.org/10.1063/1.3556196

@inproceedings{28296e8495af416b858c4c927cf59bd8,

title = "Substellar companions and the formation of hot subdwarf stars",

abstract = "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.",

keywords = "stars:binaries, stars:subdwarfs",

author = "Stephan Geier and Ulrich Heber and Alfred Tillich and Heiko Hirsch and Thomas Kupfer and Veronika Schaffenroth and Lew Classen and Maxted, {Pierre F. L.} and Ostensen, {Roy H.} and Barlow, {Brad N.} and Marsh, {Tom R.} and Gaensicke, {Boris T.} and Ralf Napiwotzki and O'Toole, {Simon J.} and Guenther, {Eike W.}",

note = "{"}Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.{"}",

year = "2011",

doi = "10.1063/1.3556196",

language = "English",

isbn = "978-0-7354-0886-9",

pages = "163--169",

editor = "S Schuh and H Drechsel and U Heber",

booktitle = "Planetary systems beyond the main sequence",

publisher = "American Institute of Physics (AIP)",

address = "United States",

}

Geier, S, Heber, U, Tillich, A, Hirsch, H, Kupfer, T, Schaffenroth, V, Classen, L, Maxted, PFL, Ostensen, RH, Barlow, BN, Marsh, TR, Gaensicke, BT, Napiwotzki, R, O'Toole, SJ & Guenther, EW 2011, Substellar companions and the formation of hot subdwarf stars. in S Schuh, H Drechsel & U Heber (eds), Planetary systems beyond the main sequence. American Institute of Physics (AIP), Melville, pp. 163-169. https://doi.org/10.1063/1.3556196

TY - GEN

T1 - Substellar companions and the formation of hot subdwarf stars

AU - Geier, Stephan

AU - Heber, Ulrich

AU - Tillich, Alfred

AU - Hirsch, Heiko

AU - Kupfer, Thomas

AU - Schaffenroth, Veronika

AU - Classen, Lew

AU - Maxted, Pierre F. L.

AU - Ostensen, Roy H.

AU - Barlow, Brad N.

AU - Marsh, Tom R.

AU - Gaensicke, Boris T.

AU - Napiwotzki, Ralf

AU - O'Toole, Simon J.

AU - Guenther, Eike W.

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - stars:binaries

KW - stars:subdwarfs

U2 - 10.1063/1.3556196

DO - 10.1063/1.3556196

M3 - Conference contribution

SN - 978-0-7354-0886-9

SP - 163

EP - 169

BT - Planetary systems beyond the main sequence

A2 - Schuh, S

A2 - Drechsel, H

A2 - Heber, U

PB - American Institute of Physics (AIP)

CY - Melville

ER -

Substellar companions and the formation of hot subdwarf stars

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Keywords

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