2013A&A...558A..96B

Query : 2013A&A...558A..96B

2013A&A...558A..96B - Astronomy and Astrophysics, volume 558A96-96 (2013/10-1)

The eclipsing post-common envelope binary CSS 21055: a white dwarf with a probable brown-dwarf companion.

BEUERMANN K., DREIZLER S., HESSMAN F.V., BACKHAUS U., BOESCH A., HUSSER T.-O., NORTMANN L., SCHMELEV A. and SPRINGER R.

Abstract (from CDS):

We report photometric observations of the eclipsing close binary CSS21055 (SDSSJ141126+200911) that strongly suggest that the companion to the carbon-oxygen white dwarf is a brown dwarf with a mass between 0.030 and 0.074M☉. The measured orbital period is 121.73min and the totality of the eclipse lasts 125s. If confirmed, CSS21055 would be the first detached eclipsing WD+BD binary. Spectroscopy in the eclipse could provide information about the companion's evolutionary state and atmospheric structure.

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Journal keyword(s): binaries: close - binaries: eclipsing - white dwarfs - brown dwarfs - stars: individual: CSS21055 - stars: individual: SDSS J141126+200911

VizieR on-line data: <Available at CDS (J/A+A/558/A96): fig1a.dat fig1b.dat fig1c.dat>

CDS comments: CSS 21055 is an incomplete format for Catalina Sky Survey. This object is SDSS J141126.20+200911.1 in SIMBAD.

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LP 468-128 ** 01 35 32.9751928872 +14 45 55.898593668   17.1   16.6   DA+L5 65 0
2 WD 0137-349 WD* 01 39 42.8531929464 -34 42 39.577891392 14.60 15.33 15.30     DA3 101 0
3 SDSS J141123.90+200813.2 * 14 11 23.9123958144 +20 08 13.331473584           ~ 2 0
4 SDSS J141125.67+201013.2 * 14 11 25.6814386824 +20 10 13.243806336           ~ 1 0
5 SDSS J141126.20+200911.1 ** 14 11 26.2220815704 +20 09 11.039979600           DA+? 49 0
6 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2417 1

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