Cyg - stars
IPHAS discoveries of young stars towards Cyg OB2 and its southern periphery
... the Cyg OB2 OB population as those we find in the southern area of Field S, near DR ...of stars would need to be very ...to Cyg OB2 and its surroundings ...of Cyg OB2 may be higher than at the ...
13
Light variations of massive stars (alpha Cyg variables). XVIII. The B[e] supergiants S 18 in the SMC and R 66 = HDE 268835 and R 126 = HD 37974 in the LMC
... Abstract. We discuss photometric monitoring (VBLUW system) of three B[e] supergiants. All three objects appear to be variable. They are subject to two (R 66 and R 126 in the LMC) and three (S 18 in the SMC) types of ...
10
Light variations of massive stars (alpha Cyg variables). XV. The LMC supergiants R99 (LBV), R103, R123 (LBV) and R128
... massive stars has led to the publication of a series of papers by the first author during the last 13 ...massive stars are photometric micro variables also called α Cygni ...
10
A solar-like magnetic cycle on the mature K-dwarf 61 Cygni A (HD 201091)
... 61 Cyg A for six epochs over nine years of ...61 Cyg A flips its polarity and is highly vari- able, with the radial field showing strong polar field during ac- tivity minimum and a complex field during ...
19
A solar like magnetic cycle on the mature K dwarf 61 Cygni A (HD 201091)
... young stars, cyclic ac- tivity in comparatively older slowly rotating solar-type stars, and a possible Maunder-minimum in some stars (Baliunas et ...HARPS stars has also confirmed that solar- ...
19
A NEW EPHEMERIS AND FUNDAMENTAL PARAMETERS FOR THE ECLIPSING BINARY STAR GSC 03612-1565 = V2647 CYG
... Such stars are very interesting objects, because they possess the apsidal motion that helps to study the concentration of the matter of the star to its center and to compare the star’s matter distribution with ...
5
Detection of non radial pulsation and faint companion in the symbiotic star CH Cyg
... Hinkle et al. (1993) and Hinkle, Fekel & Joyce (2009) suggested a correlation between the 750/770-d photometric period and the 750-d radial velocity period. They also remarked that the photometric variations of CH ...
10
V444 Cygni X-ray and polarimetric variability: radiative and coriolis forces shape the wind collision region
... V444 Cyg causes the system’s observed polarization (Robert et ...binary stars (Brown et ...V444 Cyg also posses both linear and circular polarization; de la Chevrotière et ...
20
Precision ephemerides for gravitational wave searches II CYG X 2
... neutron stars in low-mass X-ray binaries are candidate high-frequency persistent gravitational wave ...of Cyg X-2 obtained with the Liverpool Telescope with available historical radial velocity data, which ...
7
ZZ Cyg – FUNDAMENTAL PARAMETERS
... The author used the 2004 version of the Wilson-Devinney (WD) light curve and ra- dial velocity analysis program with the Kurucz atmospheres (Wilson and Devinney, 1971, Wilson, 1990, Kallrath, et al., 1998) as implemented ...
6
V2027 Cyg means the amplitude measured
... The present 72nd Name-List of Variable Stars, compiled in the manner rst introduced in the 67th Name-List (IBVS No. 2681, 1985), contains all data necessary for identication of 491 new variables nally designated ...
28
Multi-wavelength de-blended Herschel view of the statistical properties of dusty star-forming galaxies across cosmic time
... Virtual observables are generated for EAGLE galaxies in post-processing using the Monte Carlo dust radiative transfer code SKIRT (Baes et al. 2011; Camps & Baes 2015). The SKIRT modelling approach is briefly ...
21
The Creation of Neutron Stars and Black Stars and How the Chandrasekhar Limit Prevents the Creation of Intermediate Black Stars
... Figure 8. Notice the equilibrium density decreases when b reduces from 1.7258 (typically expected by others as in the above web site), to 1.2372. To date, the largest neutron star observed is 2 solar masses and the ...
17
Discovery of a new Galactic bona fide luminous blue variable with Spitzer
... massive stars (Gvaramadze, Kniazev & Fabrika 2010b; Wachter et ...central stars of these shells nearly dou- bled the number of Galactic cLBVs (Gvaramadze et ...rare stars (as it was generally ...
5
Optical and X-ray correlations during the 2015 outburst of the black hole V404 Cyg
... The optical behaviours we saw on June 19, and that reported on June 22 by Tetarenko et al. (2017), both resemble that seen in GRS 1915 + 105, where a disappearance of X-ray flux is also followed by an infrared, and then ...
20
Precise radial velocities of giant stars. I. Stable stars
... Our ongoing K giant radial velocity survey started in June 1999, with the Coudé Auxiliary Telescope (CAT) in conjunction with the Hamilton high resolution (R = 60 000) echelle spectro- graph. An iodine cell is placed in ...
7
Elements of Stars
... From stars to the interstellar medium and back Atomic nuclei created inside stars are expelled into the surrounding medium and recycled into newly form- ing stars and planets (Figure ...In ...
5
The 2.35 year itch of Cygnus OB2 #9: III. X-ray and radio emission analysis based on 3D hydrodynamical modelling
... in Cyg OB2 #9 are suggestive of unequal electron and ion temperatures, and the X-ray analysis indicates that an (immediately post-shock) electron-ion temperature ratio of ≃ ...
21
The Oldest Stars in the Galaxy – Searching for Metal-Poor Stars in the Galactic Bulge
... metal-poor stars, like those found in the ...of stars with much higher C ...metal-poor stars broadly fit into two categories; the C-normal stars and the C-enhanced (CEMP) stars (first ...
180
The Stars of David
... The Stars of David is based on the true story of a woman whose love of baseball stood above all. Set in the midst of the Great Depression, Jackie Austin, disgusted by the chauvinistic expectations of her ...
112