منابع مشابه
Molecular Hydrogen Emission Lines in Far Ultraviolet Spectroscopic Explorer Observations of Mira B 1 Brian
We present new Far Ultraviolet Spectroscopic Explorer (FUSE) observations of Mira A’s wind-accreting companion star, Mira B. We find that the strongest lines in the FUSE spectrum are H2 lines fluoresced by H I Lyα. A previously analyzed Hubble Space Telescope (HST) spectrum also shows numerous Lyα-fluoresced H2 lines. The HST lines are all Lyman band lines, while the FUSE H2 lines are mostly We...
متن کاملMira ’ s wind explored in scattering infrared CO lines
We have observed the intermediate regions of the circumstellar envelope of Mira (o Ceti) in photospheric light scattered by three vibration-rotation transitions of the fundamental band of CO, from low-excited rotational levels of the ground vibrational state, at an angular distance of β ∼ 2 − 7 away from the star. The data were obtained with the Phoenix spectrometer mounted on the 4 m Mayall te...
متن کاملInterferometric observations of the Mira star o Ceti with the VLTI/VINCI instrument in the near-infrared
We present K -band commissioning observations of the Mira star prototype o Cet obtained at the ESO Very Large Telescope Interferometer (VLTI) with the VLT INterferometer Commissioning Instrument (VINCI) and two siderostats. The observations were carried out between 2001 October and December, in 2002 January and December, and in 2003 January. Rosseland angular radii are derived from the measured...
متن کاملBPM 24754 : A new Southern ZZ Ceti star ?
We report the discovery of a new long–period ZZ Ceti star through the analysis of photometric time series gathered on 7 nights between 1995 and 1996. The light curve displays a periodic variation with a period of ∼ 18 min in white light and the frequency analysis reveals a low frequency peak at ∼ 0.92 mHz with an amplitude varying from 0.007 to 0.025 mag present every night. BPM 24754 is the 28...
متن کاملPG 1541 + 650 : A new ZZ Ceti white dwarf ?
We report the discovery of a new pulsating DA white dwarf, or ZZ Ceti, from the list of the Palomar-Green survey, rediscovered in the ongoing Hamburg Quasar survey (HQS). PG1541+650 is one of the ZZ Ceti candidates listed in the analysis of 80 DA white dwarfs from the HQS. With an effective temperature of 12000 K, for a surface gravity logg=7.79, it lies in the ZZ Ceti instability strip. It is ...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 1940
ISSN: 0004-6280,1538-3873
DOI: 10.1086/125146