MUCHFUSS - massive unseen companions to hot faint underluminous stars from SDSS

S. Geier; V. Schaffenroth; H. Hirsch; A. Tillich; U. Heber; P. F. L. Maxted; R. H. Ostensen; B. N. Barlow; S. J. O'Toole; T. Kupfer; T. Marsh; B. Gaensicke; R. Napiwotzki; O. Cordes; S. Mueller; L. Classen; E. Ziegerer; H. Drechsel

MUCHFUSS - massive unseen companions to hot faint underluminous stars from SDSS

S. Geier, V. Schaffenroth, H. Hirsch, A. Tillich, U. Heber, P. F. L. Maxted, R. H. Ostensen, B. N. Barlow, S. J. O'Toole, T. Kupfer, T. Marsh, B. Gaensicke, R. Napiwotzki, O. Cordes, S. Mueller, L. Classen, E. Ziegerer, H. Drechsel

Centre for Astrophysics Research (CAR)

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

3 Citations (Scopus)

Abstract

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions (white dwarfs with masses M > 1.0 M?, neutron stars or black holes). The existence of such systems is predicted by binary evolution calculations and some candidate systems have been found. We identified ?1100 hot subdwarf stars from the Sloan Digital Sky Survey (SDSS). Stars with high velocities have been reobserved and individual SDSS spectra have been analysed. About 70 radial velocity variable subdwarfs have been selected as good candidates for follow-up time resolved spectroscopy to derive orbital parameters and photometric follow-up to search for features like eclipses in the light curves. Up to now we found nine close binary sdBs with short orbital periods ranging from ?0.07 d to 1.5 d. Two of them are eclipsing binaries with companions that are most likely of substellar nature ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Original language	English
Pages (from-to)	431-435
Number of pages	5
Journal	Astronomische Nachrichten
Volume	333
Issue number	5-6
Publication status	Published - Jun 2012

Cite this

Geier, S., Schaffenroth, V., Hirsch, H., Tillich, A., Heber, U., Maxted, P. F. L., Ostensen, R. H., Barlow, B. N., O'Toole, S. J., Kupfer, T., Marsh, T., Gaensicke, B., Napiwotzki, R., Cordes, O., Mueller, S., Classen, L., Ziegerer, E., & Drechsel, H. (2012). MUCHFUSS - massive unseen companions to hot faint underluminous stars from SDSS. Astronomische Nachrichten, 333(5-6), 431-435.

@article{66ce02073ce44978960ea3e6b5f95d23,

title = "MUCHFUSS - massive unseen companions to hot faint underluminous stars from SDSS",

abstract = "The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions (white dwarfs with masses M > 1.0 M?, neutron stars or black holes). The existence of such systems is predicted by binary evolution calculations and some candidate systems have been found. We identified ?1100 hot subdwarf stars from the Sloan Digital Sky Survey (SDSS). Stars with high velocities have been reobserved and individual SDSS spectra have been analysed. About 70 radial velocity variable subdwarfs have been selected as good candidates for follow-up time resolved spectroscopy to derive orbital parameters and photometric follow-up to search for features like eclipses in the light curves. Up to now we found nine close binary sdBs with short orbital periods ranging from ?0.07 d to 1.5 d. Two of them are eclipsing binaries with companions that are most likely of substellar nature ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)",

author = "S. Geier and V. Schaffenroth and H. Hirsch and A. Tillich and U. Heber and Maxted, {P. F. L.} and Ostensen, {R. H.} and Barlow, {B. N.} and O'Toole, {S. J.} and T. Kupfer and T. Marsh and B. Gaensicke and R. Napiwotzki and O. Cordes and S. Mueller and L. Classen and E. Ziegerer and H. Drechsel",

year = "2012",

month = jun,

language = "English",

volume = "333",

pages = "431--435",

journal = "Astronomische Nachrichten",

issn = "0004-6337",

publisher = "Wiley-VCH Verlag",

number = "5-6",

}

Geier, S, Schaffenroth, V, Hirsch, H, Tillich, A, Heber, U, Maxted, PFL, Ostensen, RH, Barlow, BN, O'Toole, SJ, Kupfer, T, Marsh, T, Gaensicke, B, Napiwotzki, R, Cordes, O, Mueller, S, Classen, L, Ziegerer, E & Drechsel, H 2012, 'MUCHFUSS - massive unseen companions to hot faint underluminous stars from SDSS', Astronomische Nachrichten, vol. 333, no. 5-6, pp. 431-435.

TY - JOUR

T1 - MUCHFUSS - massive unseen companions to hot faint underluminous stars from SDSS

AU - Geier, S.

AU - Schaffenroth, V.

AU - Hirsch, H.

AU - Tillich, A.

AU - Heber, U.

AU - Maxted, P. F. L.

AU - Ostensen, R. H.

AU - Barlow, B. N.

AU - O'Toole, S. J.

AU - Kupfer, T.

AU - Marsh, T.

AU - Gaensicke, B.

AU - Napiwotzki, R.

AU - Cordes, O.

AU - Mueller, S.

AU - Classen, L.

AU - Ziegerer, E.

AU - Drechsel, H.

PY - 2012/6

Y1 - 2012/6

N2 - The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions (white dwarfs with masses M > 1.0 M?, neutron stars or black holes). The existence of such systems is predicted by binary evolution calculations and some candidate systems have been found. We identified ?1100 hot subdwarf stars from the Sloan Digital Sky Survey (SDSS). Stars with high velocities have been reobserved and individual SDSS spectra have been analysed. About 70 radial velocity variable subdwarfs have been selected as good candidates for follow-up time resolved spectroscopy to derive orbital parameters and photometric follow-up to search for features like eclipses in the light curves. Up to now we found nine close binary sdBs with short orbital periods ranging from ?0.07 d to 1.5 d. Two of them are eclipsing binaries with companions that are most likely of substellar nature ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

AB - The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions (white dwarfs with masses M > 1.0 M?, neutron stars or black holes). The existence of such systems is predicted by binary evolution calculations and some candidate systems have been found. We identified ?1100 hot subdwarf stars from the Sloan Digital Sky Survey (SDSS). Stars with high velocities have been reobserved and individual SDSS spectra have been analysed. About 70 radial velocity variable subdwarfs have been selected as good candidates for follow-up time resolved spectroscopy to derive orbital parameters and photometric follow-up to search for features like eclipses in the light curves. Up to now we found nine close binary sdBs with short orbital periods ranging from ?0.07 d to 1.5 d. Two of them are eclipsing binaries with companions that are most likely of substellar nature ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

M3 - Article

SN - 0004-6337

VL - 333

SP - 431

EP - 435

JO - Astronomische Nachrichten

JF - Astronomische Nachrichten

IS - 5-6

ER -

MUCHFUSS - massive unseen companions to hot faint underluminous stars from SDSS

Abstract

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