Variable stars in young open star cluster NGC 7380
| Autor: | Manash R. Samal, Sneh Lata, Ashwani Pandey, J. C. Pandey, Wen Ping Chen, Neelam Panwar |
|---|---|
| Přispěvatelé: | Aryabhatta Research Institute of Observational Sciences, Aryabhatta Research Institute of Observational Sciences (ARIES), Laboratoire de Physico-Chimie de l'Atmosphère (LPCA), Centre National de la Recherche Scientifique (CNRS)-Université du Littoral Côte d'Opale, Laboratoire de chimie bactérienne (LCB), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Fujian Institute of Research on the Structure of Matter, National Engineering Research Center for Optoelectronic Crystalline Materials, Chinese Academy of Sciences, Insitute of Geology China Earthquake Administration Beijing 100029, China (X.X., G.C., W.C.) (INSITUTE OF GEOLOGY), Insitute of Geology, ECE Dept., University of Wisconsin-Madison, Harbin Institute of Technology (HIT), Department of Information Science and Media Studies [Bergen], University of Bergen (UIB), Institute of Geology, Chinese Academy of Sciences [Changchun Branch] (CAS), Linköping University (LIU), Department of Mechanical Engineering, National Chung-Hsing University, Research Center for Environmental Changes, Institute of Earthquake Prediction Research, Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Université du Littoral Côte d'Opale (ULCO)-Centre National de la Recherche Scientifique (CNRS), Department of Information Science and Media Studies [Bergen] (UiB), University of Bergen (UiB), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Spiral galaxy 010308 nuclear & particles physics K-type main-sequence star Flare star Astronomy FOS: Physical sciences Astronomy and Astrophysics Astrophysics Herbig Ae/Be star 01 natural sciences Blue straggler Stars T Tauri star Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science 0103 physical sciences [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Open cluster |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 456 (3), pp.2505--2517. ⟨10.1093/mnras/stv2800⟩ Monthly Notices of the Royal Astronomical Society, 2016, 456 (3), pp.2505--2517. ⟨10.1093/mnras/stv2800⟩ |
| ISSN: | 0035-8711 1365-2966 |
| DOI: | 10.48550/arxiv.1511.08892 |
| Popis: | We present time series photometry of 57 variable stars in the cluster region NGC 7380. The association of these variable stars to the cluster NGC 7380 has been established on the basis of two colour diagrams and colour-magnitude diagrams. Seventeen stars are found to be main-sequence variables, which are mainly B type stars and are classified as slowly pulsating B stars, $\beta$ Cep or $\delta$ Scuti stars. Some of them may belong to new class variables as discussed by Mowlavi et al. (2013) and Lata et al. (2014). Present sample also contains 14 pre-main-sequence stars, whose ages and masses are found to be mostly $\lesssim$ 5 Myr and range 0.60 $\lesssim M/M_{\odot} \lesssim$ 2.30 and hence should be T-Tauri stars. About half of the weak line T-Tauri stars are found to be fast rotators with a period of $\lesssim$ 2 days as compared to the classical T-Tauri stars. Some of the variables belong to the field star population. Comment: 14pages, 16 figures, accepted for publication in MNRAS. arXiv admin note: text overlap with arXiv:1209.1472 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|