1998A&A...333..524F

Query : 1998A&A...333..524F

1998A&A...333..524F - Astronomy and Astrophysics, volume 333, 524-530 (1998/5-2)

The search for δ Scuti stars in open clusters.

FRANDSEN S. and ARENTOFT T.

Abstract (from CDS):

In order to improve the tests of models of stellar evolution, observations giving tighter constraints on the models were initiated by the formation of an informal group STACC (Frandsen, 1992, Delta Scuti Star Newsletter Vienna Observatory 5, 12). The purpose of the group is to search for and make observations of δ Scuti stars in open clusters. This paper presents some of the results of the search, mainly for distant open clusters with a rich population of variables. Included is an announcement of a target list (Frandsen & Arentoft 1998, The Book, in prep.) and four examples of new Colour-Magnitude (CM) diagrams of open clusters considered to be interesting targets. Finally, we present the fruits of extensive searching: an open cluster that contains many δ Scuti stars.

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Journal keyword(s): δ Scu - stars: evolution - stars: oscillations - open clusters and associations: individual

Nomenclature: Table 1: Cl* NGC 1817 FA NNN N=8 among 176

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NGC 1513 OpC 04 09 52.8 +49 30 14   8.71 8.4     ~ 62 0
2 V* V1177 Tau dS* 05 12 26.6748914184 +16 43 53.786577792   14.53 14.147     ~ 17 0
3 V* V1178 Tau dS* 05 12 32.2736280168 +16 44 51.832635612   13.05 12.581     ~ 20 0
4 NGC 1817 OpC 05 12 33.4 +16 41 46           ~ 180 0
5 V* V1179 Tau dS* 05 12 37.3979572344 +16 42 30.929904072   14.88 14.507     ~ 13 0
6 V* V1180 Tau dS* 05 12 40.1622792528 +16 41 01.086814284   16.86 15.314     ~ 6 0
7 V* V1181 Tau dS* 05 12 40.8119065992 +16 42 00.324841356   13.30 12.846     ~ 17 0
8 V* V1182 Tau dS* 05 12 42.8257330056 +16 41 43.278478404   13.92 13.507     ~ 18 0
9 V* V1183 Tau dS* 05 12 46.8369444360 +16 38 39.600015540   14.24 12.892     ~ 17 0
10 NGC 2215 OpC 06 20 47.8 -07 16 37   8.85 8.45     ~ 62 0
11 NGC 2324 OpC 07 04 07.9 +01 02 46   8.83 8.4     ~ 159 0
12 NGC 2360 OpC 07 17 46.3 -15 37 52           ~ 194 0
13 NGC 2489 OpC 07 56 15.4 -30 03 36   8.58 7.9     ~ 77 0
14 V* BV Cnc dS* 08 40 32.9592741000 +19 11 39.569214768   8.98 8.72     F0V 90 0
15 V* BN Cnc dS* 08 40 39.2340192816 +19 13 41.848124700   8.01 7.80     A9V 113 0
16 NGC 2660 OpC 08 42 40.1 -47 12 04   9.05 8.8     ~ 152 0
17 V* FG Vir dS* 12 14 15.4565381808 -05 42 59.750820036   6.807 6.558     A8/9V 216 0
18 NGC 6134 OpC 16 27 48.7 -49 09 40   7.89 7.2     ~ 152 0
19 Cl* NGC 1817 FA 146 * ~ ~   13.71 13.29     ~ 2 0

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