SIMBAD references

2021MNRAS.504..101L - Mon. Not. R. Astron. Soc., 504, 101-117 (2021/June-2)

Photometric observations of NGC 281: detection of 228 variable stars.


Abstract (from CDS):

We identify 228 periodic variables in the region of young open cluster NGC 281 using time series photometry carried out from 1 m class ARIES telescopes, Nainital. The cluster membership of these identified variables is determined on the basis of colour-magnitude, two colour diagrams, and kinematic data. A total of 81 variable stars are found to be members of the cluster NGC 281. Of 81 variables, 30 and 51 are probable main-sequence and pre-main-sequence members, respectively. This study classifies main-sequence variable stars into different variability types according to their periods of variability, shape of light curves, and location in the Hertzsprung-Russell diagram. These identified main-sequence variables could be β Cep, δ Scuti, slowly pulsating B type, and new class variables. Among 51 pre-main-sequence variables, majority of them are weak line T Tauri stars. The remaining 147 variables could belong to the field population. The variability characteristics of the field population indicate that these variables could be RR Lyrae, δ Scuti, and binaries-type variables.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): open clusters and associations: individual: NGC 281 - Hertzsprung-Russell and colour-magnitude diagram - stars: pre-main-sequence - stars: variables: T Tauri, Herbig Ae/B

Nomenclature: Fig. 1, Table 2: [LPP2021] VNNN (Nos V1-V228).

Status at CDS : Tables of objects will be appraised for possible ingestion in SIMBAD.

Simbad objects: 10

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