MUCHFUSS - Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS

Geier S, Schaffenroth V, Hirsch H, Tillich A, Heber U, Maxted PFL, Ostensen RH, Barlow BN, O'Toole SJ, Kupfer T, Marsh T, Gaensicke BT, Napiwotzki R, Cordes O, Müller S, Classen L, Ziegerer E, Drechsel H (2012)

Publication Type: Journal article

Publication year: 2012

Journal

Astronomische Nachrichten Wiley

Book Volume: 333

Pages Range: 431-435

Journal Issue: 5-6

DOI: 10.1002/asna.201211684

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 © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Authors with CRIS profile

Stephan Geier Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut Veronika Schaffenroth Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut Ulrich Heber Naturwissenschaftliche Fakultät Sebastian Müller Professur für Astronomie und Astrophysik Lew Classen Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut Eva Ziegerer Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut Horst Drechsel Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut

Involved external institutions

University of Hertfordshire GB United Kingdom (GB) Katholieke Universiteit Leuven (KUL) / Catholic University of Leuven BE Belgium (BE) University of North Carolina at Chapel Hill US United States (USA) (US) Australian Astronomical Observatory AU Australia (AU) University of Keele GB United Kingdom (GB) University of Warwick GB United Kingdom (GB) Argelander-Institut für Astronomie DE Germany (DE)

How to cite

APA:

Geier, S., Schaffenroth, V., Hirsch, H., Tillich, A., Heber, U., Maxted, P.F.L.,... Drechsel, H. (2012). MUCHFUSS - Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS. Astronomische Nachrichten, 333(5-6), 431-435. https://doi.org/10.1002/asna.201211684

MLA:

Geier, Stephan, et al. "MUCHFUSS - Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS." Astronomische Nachrichten 333.5-6 (2012): 431-435.

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