V471 Tauri Research Articles

Discovery of soft X-ray emission from V471 Tauri and UU Sagittae - Two highly evolved, low-mass binaries

Discovery of soft X-ray emission from V471 Tauri and UU Sagittae - Two highly evolved, low-mass binaries

Period variation and the new light curves of V471 Tauri

The light curve and period variation of the eclipsing system V471 Tau is discussed. The migration period of 191 days obtained recently by Ibanoglu agrees well with the new observations. The period decreases by about one second per century, which may correspond to a mass transfer of 1×10−7 solar mass. Furthermore, the O−C diagram shows a noticeable sine curve super-imposed on the parabolic variation. The period of the sine curve is about 3.1 years.

Photometric observations of eclipses and flare-ups in V471 Tauri

view Abstract Citations (16) References (5) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Photometric observations of eclipses and flare-ups in V471 Tauri. Beavers, W. I. ; Oesper, D. A. ; Pierce, J. N. Abstract The timings of a series of ingress and egress observations of the eclipses of V471 Tauri agree well with a previously determined ephemeris. High time resolution details are reported for two flarelike events observed in the U band. Publication: The Astrophysical Journal Pub Date: June 1979 DOI: 10.1086/182990 Bibcode: 1979ApJ...230L.187B Keywords: Eclipsing Binary Stars; Flare Stars; Stellar Spectrophotometry; White Dwarf Stars; Astronomical Photometry; Electrophotometry; High Resolution; Photomultiplier Tubes; Astronomy; Eclipsing Binaries:Periods; Eclipsing Binaries:Stellar Flares; Eclipsing Binaries:White Dwarfs full text sources ADS | data products SIMBAD (1) NED (1)

CA II H AND K AND HYDROGEN-LINE VARIATIONS IN V471 TAURI (= BD+16 516).

ABSTRACT Spectroscopic and narrow-band photoelectric observations of the white dwarf eclipsing binary V471 Tau (= BD + 16 deg 516) are reported. Periodic fluctuations in Ca II H and K emission and H-alpha absorption, and a wave-like distortion of the light curve mimic the characteristics of several well-observed RS CVn binaries. A probable correlation between maximum emission-line strength and wave minimum is shown to exist.

1978 photometry of V711 Tauri=HR 1099 - During the radio outburst

1978 photometry of V711 Tauri=HR 1099 - During the radio outburst