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Category/Subcategory: Natural Sciences/Astronomy

Solarnet Transnational Access and Service Programme 2013 - 2017

Author: Solarnet - High Resolution Solar Physics Network
As a part of the SOLARNET project, the Transnational Access and Service Programme supports the access of the European solar physics community to some of the best European telescopes. To enhance the efficiency of data usage, exte ... more

Views: 377

Physical formulation of the eigenfrequency condition of mixed modes of stellar oscillations

Author: Masao Takata
The frequency condition for the mixed modes of nonradial stellar oscillations is generally examined by a simple physical model based on a running-wave picture. The coupling coefficient between the gravity-wave oscillation in the ... more

Views: 225

Stell parameters of main sequence turn-off star candidates observed with the LAMOST and Kepler

Author: Yaqian Wu
Main sequence turn-off (MSTO) stars are advantaged indicators of Galactic evo- lution since their ages could be robustly estimated by atmospheric parameters. Hundreds of thousands of MSTO stars have been selected from the LAMOST ... more

Views: 395

WP80: Synoptic Observations: Solar Physics Research Network Group (SPRING)

Author: Markus Roth
High-resolution telescopes (such as SST, GREGOR and the future EST and ATST) allow observations of only a small fraction of the solar surface. Real-time context data showing the large-scale dynamics and magnetism at different l ... more

Views: 216


Author: Jadwiga Daszynska-Daszkiewicz
The long-time photometric surveys in a few young open clusters allowed to identify the light variability in stars located between the well defined  Scuti variables and Slowly Pulsating B-type stars (Mowlavi et al, 2013, 2015). ... more

Views: 333

The Seismic Plus Portal

Author: Kevin Belkacem
The wealth of seismic data available from space borne missions (SOHO, CoRoT, Kepler, SDO,…), and from ground-based observations (GONG, Bison, ground-based large programmes…), is stimulating solar and stellar structure and evo ... more

Views: 454

Revisiting the Instability Strip for rapidly oscillating Ap stars

Author: Maragrida Cunha
Chemically peculiar stars are stage to a wide variety of physical phenomena. Progress in the understanding of these objects, through the study of their oscillations, can help us characterize these physical phenomena and better und ... more

Views: 306

Improving 1D Stellar Models with 3D Atmospheres

Author: Jakob Mosumgaard
How to improve traditional 1D models of stellar structure and evolution using results from sophisticated 3D simulations of stellar atmospheres. More specifically, how T-tau relations from Trampedach et al. (2014, MNRAS, 442, 805) ... more

Views: 404

Effects of the HeII ionization zones on oscillation frequencies Applications to Kepler and CoRoT stars

Author: mutlu yildiz
Solar-like oscillation frequencies of 93 target stars of Kepler and CoRoT are analyzed. In the present study, we present results for two of them. Recently, two new reference frequencies nu_min1 and nu_min2 are found in the spacin ... more

Views: 387

Photosphere and chromosphere telescope at Hvar Observatory

Author: Jaša Čalogović
The double solar telescope at the Hvar Observatory consists of two Carl Zeiss refractors, attached as one unit on a German parallax mounting. The photosphere telescope has an objective diameter of 217 mm and the chromosphere teles ... more

Views: 329