Revised age for CM Draconis and WD 1633+572
نویسندگان
چکیده
منابع مشابه
The metallicity of CM Draconis
We compare observations of the eclipsing binary system CM Draconis (hereafter CM Dra) with synthetic spectra computed using the stellar atmosphere code PHOENIX. High-resolution infrared spectroscopic observations of six 0.05-mm-wide regions between 1.51 and 2.45mm, combined with previous work, particularly CM Dra’s accurately known surface gravity, enable us to estimate its metallicity using de...
متن کاملA search for Jovian-mass planets around CM Draconis using eclipse minima timing
For the eclipsing binary system CM Draconis, eclipse minimum times have been monitored with high precision between 1994 and 1999. Periodic deviations of minimum times from a linear ephemeris may indicate the presence of an orbiting third body. Individual measurements of 41 eclipse minimum times result in a standard deviation from linear ephemeris of 5.74 seconds. A power spectral analysis of th...
متن کاملLetter to the Editor A search for Jovian-mass planets around CM Draconis using eclipse minima timing
For the eclipsing binary system CM Draconis, eclipse minimum times have been monitored with high precision between 1994 and 1999. Periodic deviations of minimum times from a linear ephemeris may indicate the presence of an orbiting third body. Individual measurements of 41 eclipse minimum times result in a standard deviation from linear ephemeris of 5.74 seconds. A power spectral analysis of th...
متن کاملFrom CM Draconis to the Crowded Field BW3: Aspects of the Search for Extrasolar Planets Around Small Eclipsing Binaries
We review some apsects of the search for extrasolar planets around small-mass short-period eclipsing binaries, including lessons from the extensive search around CM Draconis (over 1,000 hours), and the extention of the search to small eclipsing binaries in the crowded field Baade’s Window 3 (BW3) in the Galactic plane. In addition to being of intrinsic interest to planet formation studies, due ...
متن کاملOptics Imaging and a Revised Starburst Age for the
We present the results of adaptive-optics imaging of the z = 0.2923 QSO PG1700+518 in the J and H bands. The extension to the north of the QSO is clearly seen to be a discrete companion with a well-defined tidal tail, rather than a feature associated with the host galaxy of PG1700+518 itself. On the other hand, an extension to the southwest of the QSO (seen best in deeper, but lower-resolution,...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2014
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201424288