A NEW 24 μm PHASE CURVE FOR υ ANDROMEDAE b

A new interferometric study of four exoplanet host stars: θ Cygni, 14 Andromedae, υ Andromedae and 42 Draconis⋆⋆⋆

Context. Since the discovery of the first exoplanet in 1995 around a solar-type star, the interest in exoplanetary systems has kept increasing. Studying exoplanet host stars is of the utmost importance to establish the link between the presence of exoplanets around various types of stars and to understand the respective evolution of stars and exoplanets. Aims. Using the limb-darkened diameter (...

A Distant Stellar Companion in the Υ Andromedae System

Upsilon Andromedae is an F8V star known to have an extrasolar system of at least 3 planets in orbit around it. Here we report the discovery of a low-mass stellar companion to this system. The companion shares common proper motion, lies at a projected separation of ∼750 AU, and has a spectral type of M4.5V. The effect of this star on the radial velocity of the brighter primary is negligible, but...

The Light Curve of S Andromedae

Historical observations of S And, in combination with the color versus rateof-decline relationship for well observed SN 1991bg-like supernovae, are used to estimate a rate of decline ∆m15 (B) = 2.21 and an intrinsic color at maximum [B(0)− V (0)]o = 1.32 for SN 1885A. Subject headings: supernovae:individual (S Andromedae)

Υ and Υ ′ Leptonic Widths , a b μ , and m b from full lattice

a new approach to credibility premium for zero-inflated poisson models for panel data

هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...