TYC 1337-1137-1 and TYC 3836-0854-1: Two Low-mass Ratio, Deep Overcontact Systems Near the End Evolutionary Stage of Contact Binaries
نویسندگان
چکیده
منابع مشابه
TYC 3159-6-1: a runaway blue supergiant
We report the results of optical spectroscopy of a candidate evolved massive star in the CygnusX region, TYC 3159-6-1, revealed via detection of its curious circumstellar nebula in archival data of the Spitzer Space Telescope. We classify TYC 3159-6-1 as an O9.5−O9.7 Ib star and derive its fundamental parameters by using the stellar atmosphere code FASTWIND. The He and CNO abundances in the pho...
متن کاملParameters of two low - mass contact eclipsing binaries near the short - period limit
The two objects 1SWASP J150822.80−054236.9 and 1SWASP J160156.04+202821.6 were initially detected from their SuperWASP archived light curves as candidate eclipsing binaries with periods close to the short-period cut-off of the orbital period distribution of main sequence binaries, at ∼0.2 d. Here, using INT spectroscopic data, we confirm them as double-lined spectroscopic and eclipsing binaries...
متن کاملScientific report “2nd TYC Conference: Charge Transfer for Energy Applications”
Charge transfer underlies the function of many devices ranging from transistors to light-emitting diodes, and from solar to biofuel cells. It is often the limiting factor for the performance of these devices. As such it is absolutely vital to understand the mechanism, thermodynamics and kinetics of this important physical process on a molecular level. Although the time and length scales of the ...
متن کاملa case study of the two translators of the holy quran: tahereh saffarzadeh and laleh bakhtiar
بطورکلی، کتاب های مقدسی همچون قران کریم را خوانندگان میتوان مطابق با پیش زمینه های مختلفی که درند درک کنند. محقق تلاش کرده نقش پیش زمینه اجتماعی-فرهنگی را روی ایدئولوژی های مترجمین زن و در نتیجه تاثیراتش را روی خواندن و ترجمه آیات قرآن کریم بررسی کند و ببیند که آیا تفاوت های واژگانی عمده ای میان این مترجمین وجود دارد یا نه. به این منظور، ترجمه 24 آیه از آیات قرآن کریم مورد بررسی مقایسه ای قرار ...
15 صفحه اولLow-mass binaries in young stellar clusters: a deep near-infrared adaptive optics survey
{ Observations of diierent young clusters with ages ranging from 2 to 700 Myr have been performed with the adaptive optics system PUEO at CFHT to search for companions around low-mass stars (M < 1:5M). Over 350 stars were observed with the high angular resolution and sensitivity provided by PUEO, leading to the detection of 60 multiple systems, with separations down to 0: 00 08. The companion s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 2017
ISSN: 0004-6280,1538-3873
DOI: 10.1088/1538-3873/aa8ded