2021MNRAS.504..101L


Query : 2021MNRAS.504..101L

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

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

LATA S., PANDEY A.K., PANDEY J.C., PANWAR N. and PAUL P.

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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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 LBN 117.62+02.29 HII 00 01 29 +64 39.0           ~ 37 0
2 Cl Berkeley 59 OpC 00 02 14 +67 25.0           ~ 78 0
3 NGC 281 HII 00 52 25.1 +56 33 54           ~ 234 1
4 NGC 1893 OpC 05 22 44 +33 24.7   7.90 7.5     ~ 241 0
5 C 0524+343 OpC 05 28 07.5 +34 25 42           ~ 64 0
6 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2073 1
7 NGC 2264 OpC 06 40 58 +09 53.7           ~ 1639 0
8 SA 98- reg 06 52 04.1 -00 23 58           ~ 169 0
9 NGC 3766 OpC 11 36 18 -61 36.9   5.66 5.3     ~ 190 0
10 NGC 7380 OpC 22 47 21 +58 07.9   7.62 7.2     ~ 175 0

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2021.09.21-16:47:53

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