Stars: variability
DISCOVERY OF IRREGULAR VARIABILITY OF FIVE STARS IN THE VICINITY OF THE YOUNG STELLAR OBJECT V645 CYGNI
... confirmed variability of one suspected variable. All of these stars show variability of irregular type and have consid- erable infrared colour indices characteristic of the young stellar ...of ...
6
New Insights from Aperiodic Variability of Young Stars
... optical variability among the ∼ 2, 100 known and suspected members of the North America Nebula complex cataloged by Rebull et ...variable stars, we consider the evidence for and typical properties of ...
225
Variability in young very low mass stars : two surprises from spectrophotometric monitoring
... photometric variability in the I band, with amplitudes between ...Hα variability, in addition to the continuum ...high-amplitude variability in young very low mass stars can be caused by ...
16
A study of variability in the ultraviolet spectra of galactic Wolf-Rayet stars
... fourteen stars included in this archival survey of intrinsic variability, three have been found to be definitely variable, a proportion of 21 ...two stars discussed in C hapters 3 and 4 as well as W ...
332
Long term variability of T Tauri stars using WASP
... Tauri stars, our sample contains many objects that have been studied over decades and have originally been discovered based on their variability, ...most stars have ages around 1-2 ...
15
Variability of Kepler solar-like stars harboring small exoplanets
... the stars are still relatively ...M stars where the convective energies and velocities are lower, and the brightness substructure is reduced ( Beeck et ...M stars are also fainter so we begin to lose ...
11
The variability of three O-type stars: zeta Ophiuchi; zeta Puppis; and HD 93521
... early-type stars for which pulsation has been unambiguously accepted as the explanation of the photometric, radial-velocity variations and Ipv seen in these stars (but also see § ...B-type stars ...
300
Characterizing the variability of stars with early-release Kepler data
... stellar variability of the sample on the timescale of the data set (33 days) and at the sampling rate of the data (30 minutes); we do explore briefly the variability as a function of the time baseline from ...
21
Observational studies of wind and photospheric variability in three early type stars
... profile variability (Ipv) in HD 64760 is rather unusual in that DACs are found to coexist with sinusoidal flux variations that simultaneously evolve both blueward and redward with time, giv ing the appearance of ...
193
Young stars in the time domain
... allowed variability studies to cover a greater number of targets at higher cadences, and characterize the variability properties of more deeply embedded, and presumably less evolutionarily advanced, ...to ...
13
Discovery of the magnetic field of the B1/B2V star σ Lupi
... FIGURE 2. (a) Overplot of variable UV wind lines of σ Lupi. Such variability is exclusively found in magnetic B stars, which prompted a magnetic search. (b) Overplot of all magnetic and EW data folded with ...
5
Precision diagnostics of pulsation and evolution in helium rich low mass stars
... mass stars linked by their un- usually low hydrogen atmospheric abundance, usually completely replaced with ...sdO) stars are low-mass core helium burning stars with extremely low-mass hydrogen ...
219
COMMISSIONS 27 AND 42 OF THE IAU INFORMATION BULLETIN ON VARIABLE STARS
... and variability type for each star. The order of stars in Table 1 corresponds to the order of stars in the ...contain variability ranges, light elements, spectral types, identifications with ...
22
The pti carbon star angular size survey: effective temperatures and non-sphericity
... carbon stars exhibit photometric variability, particularly in the visible, where Δ V 1 is not uncommon (Watson ...the variability is significantly less (Section ...greater variability with Δ V ...
19
Energetic properties of stellar pulsations across the Hertzsprung-Russell diagram
... some stars the mechanism can be e ff ...III stars ([6]), M dwarf stars ([7]), DAO white dwarfs originating from post-extreme horizontal branch stars ([8]) and Wolf-Rayet stars ...
6
Study of Variation of Gravitational Constant (G) in the Very Strong Gravitational Field
... neutron stars applying special relativity and Newton’s law of gravitation for two bodies where v be the velocity of spinning compact bodies like black holes, neutron stars ...the variability of the ...
5
MHD Simulations of Magnetospheric Accretion, Ejection and Plasma-field Interaction
... accreting stars. Some of them are very young, such as Classical T Tauri stars (CTTSs), while others are very old — white dwarfs and neutron ...these stars show complex patterns of periodic, ...
11
Pulsating stars in SuperWASP
... By using the results of the Kepler mission as a benchmark, the latter study showed that for stars of magnitude 11 and brighter, it is possible to detect variability to an amplitude of 0.5 mmag (Fig. 2). ...
6
Blazhko modulation in first-overtone RR Lyrae stars from the OGLE Collection
... Lyrae stars. RRd stars are marked with green asterisks, fundamental mode and second overtone stars are marked with red triangles, first overtone ones with a shorter-period non-radial mode stars ...
5
COMMISSIONS 27 AND 42 OF THE IAU INFORMATION BULLETIN ON VARIABLE STARS
... and variability type for each star. The order of stars in Table 1 corresponds to the order of stars in the ...presents variability ranges, light el- ements, spectral types, identifications ...
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