2001A&A...371..571K


Query : 2001A&A...371..571K

2001A&A...371..571K - Astronomy and Astrophysics, volume 371, 571-578 (2001/5-4)

Search for short-period variable stars in the open cluster NGC 2301.

KIM S.-L., CHUN M.-Y., PARK B.-G., LEE S.H., SUNG H., ANN H.B., LEE M.G., JEON Y.-B. and YUK I.-S.

Abstract (from CDS):

Time-series CCD photometric observations of an intermediate age open cluster NGC 2301 were performed to search for variable stars, particularly γ Dor stars and δ Sct stars. We also carried out UBVI photometry to study physical properties of variable stars in the cluster. We derived observational parameters of the cluster from UBVI photometric results. The best fit of the empirical ZAMS in a color-color diagram gives a reddening value of E(B-V)=0.05±0.03. We also estimated a distance modulus of (V-MV)0=9.6±0.1 and an age of logt=8.4±0.1, from the ZAMS and isochrone fitting in a color-magnitude diagram. Using V time-series data, we carefully examined light variations of 923 stars fainter than 10.0mag and discovered nine short-period variable stars; two γ Dor candidates, five eclipsing binaries, one Slowly Pulsating B star and one magnetic Chemically Peculiar variable candidate. Two γ Dor candidates with relatively short periods of around 0.3 days are located in a redder region (about 0.1mag in B-V color) than the red edge of δ Sct instability strip in the color-magnitude diagram.

Abstract Copyright:

Journal keyword(s): open cluster: individual: NGC 2301 - stars: C-M diagrams - stars: variables: γ Dor - stars: binaries: eclipsing

Nomenclature: Tables 2, 3: Cl* NGC 2301 KCP VN (Nos V1-V9).

Simbad objects: 22

goto Full paper

goto View the references in ADS

Number of rows : 22
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 1039 OpC 02 42 07 +42 43.3           ~ 400 0
2 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3233 0
3 * gam Dor gD* 04 16 01.5866224848 -51 29 11.932714356   4.55 4.20     F1V 299 0
4 V* V1156 Ori Ro* 05 23 50.3591328504 +02 04 55.824899052   7.78 7.91     B7IV 122 0
5 V* V851 Mon a2* 06 51 40.1243108640 +00 27 07.041386412   11.23 11.11 10.86   ~ 17 0
6 V* V852 Mon EB* 06 51 41.6609543688 +00 23 42.653065668   17.646 16.58     ~ 8 0
7 V* V853 Mon EB* 06 51 43.2756531240 +00 31 18.614475768   17.172 15.98     ~ 5 0
8 NGC 2301 OpC 06 51 46 +00 27.9   6.30 6.0     ~ 148 0
9 V* V854 Mon gD* 06 51 48.8592917160 +00 26 55.848927048   12.891 12.570     ~ 7 0
10 V* V855 Mon gD* 06 51 50.0271470976 +00 28 19.694021304   13.07 12.72 12.55   ~ 11 0
11 V* V856 Mon a2* 06 51 51.0974528976 +00 25 39.145376532   11.928 11.628     ~ 7 0
12 V* V857 Mon EB* 06 51 56.7488034864 +00 25 46.947367632   16.885 15.82 15.502   ~ 8 0
13 V* V858 Mon EB* 06 51 57.2765582376 +00 25 46.510828176   16.797 15.73 15.235   ~ 6 0
14 V* V859 Mon EB* 06 52 07.1595987792 +00 32 52.860456564   15.374 14.47     ~ 4 0
15 NGC 2420 OpC 07 38 24 +21 34.5   9.0 8.3     ~ 445 0
16 NGC 2516 OpC 07 58 06 -60 48.0           ~ 656 0
17 NGC 2682 OpC 08 51 23 +11 48.8           ~ 2204 0
18 NGC 6134 OpC 16 27 49 -49 09.7   7.89 7.2     ~ 139 0
19 * del Sct dS* 18 42 16.4268984096 -09 03 09.188922060   5.04 4.71     F2II-III 465 0
20 NGC 2301 1323 * ~ ~   17.646 16.605     ~ 1 0
21 NGC 2301 1733 * ~ ~   15.374 14.452     ~ 1 0
22 NGC 2301 1668 * ~ ~   17.172 16.075     ~ 1 0

To bookmark this query, right click on this link: simbad:objects in 2001A&A...371..571K and select 'bookmark this link' or equivalent in the popup menu


2022.10.03-17:44:24

© Université de Strasbourg/CNRS

    • Contact