1998PASP..110..804Z

Query : 1998PASP..110..804Z

1998PASP..110..804Z - Publ. Astron. Soc. Pac., 110, 804-809 (1998/July-0)

Search for low-instability strip variables in the young open cluster NGC 2516.

ZERBI F.M., MANTEGAZZA L., CAMPANA S. and ANTONELLO E.

Abstract (from CDS):

In this paper we revise and complete the photometric survey of the instability strip of the southern open cluster NGC 2516 published by (ref???)Antonello & Mantegazza. No variable stars with amplitudes larger than 0.02 mag were found. However, by means of an accurate analysis based on a new statistical method, two groups of small-amplitude variables have been disentangled: one with periods of less than 0.25 days (probably δ Scuti stars) and one with periods of greater than 0.025 days. The position in the H-R diagram and the apparent timescale may suggest that the stars of the second group belong to a recently discovered new class of variables, named γ Dor variables. They certainly deserve further study. We also present a comparison between the results of the photometric survey and the available pointed ROSAT observations of this cluster.

Abstract Copyright: ∼

Journal keyword(s): Stars: Variables: δ Scuti - Stars: Variables: Other

Simbad objects: 55

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Number of rows : 55
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
2 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
3 NGC 2168 OpC 06 09 07.5 +24 20 15           ~ 604 0
4 NGC 2301 OpC 06 51 51.0 +00 28 35   6.30 6.0     ~ 173 0
5 NGC 2516 106 V* 07 56 43.1174409432 -60 54 34.866373140   11.61 11.22   11.071 ~ 34 0
6 NGC 2516 4 * 07 56 47.8337123472 -60 56 49.858610856   11.1 10.8   10.402 A7III 31 0
7 NGC 2516 108 gD* 07 57 02.9664455376 -60 36 36.833849568   11.55 11.22   10.791 ~ 35 0
8 CD-60 1935 * 07 57 18.1475750472 -60 34 50.107577556   10.38 10.21   10.012 A2V 37 0
9 NGC 2516 107 * 07 57 23.1724381440 -60 49 38.491908888   11.85 11.30   10.661 ~ 31 0
10 NGC 2516 92 gD* 07 57 25.0374905280 -60 39 17.353136088   11.756 11.370   10.896 ~ 40 0
11 CD-60 1938 * 07 57 28.4766488280 -60 50 24.031254084   10.09 9.92   9.662 A1V 26 0
12 CPD-60 956 * 07 57 31.7513283496 -60 59 29.594332227   11.201 10.838 10.860   ~ 28 0
13 CD-60 1940 * 07 57 34.5657245856 -60 59 35.022682860   10.454 10.260   10.037 ~ 23 0
14 CD-60 1944 * 07 57 37.4862182232 -60 53 52.216545912   11.19 10.85   10.547 ~ 36 0
15 CD-60 1947 * 07 57 38.3776933416 -60 53 25.831585032   11.55 11.23   10.794 ~ 41 0
16 V* V416 Car dS* 07 57 45.5056356456 -60 47 02.600445804   10.84 10.63   10.306 A3V 40 0
17 NGC 2516 93 V* 07 57 46.0801430304 -60 48 39.500081424   11.42 11.13   10.671 ~ 28 0
18 CD-60 1954 Pu* 07 57 49.1756921659 -60 41 01.094971793   8.54 8.50     B9.5V 52 0
19 CPD-60 972 * 07 57 51.9065796984 -60 45 06.335318520   11.18 10.90   10.544 A7III 29 0
20 CD-60 1959 Pu* 07 57 57.3733007832 -60 44 16.168255512   10.05 9.87   9.642 A2V 30 0
21 NGC 2516 OpC 07 58 00.5 -60 46 36           ~ 793 0
22 CPD-60 977 Pe* 07 58 01.8341464253 -60 43 39.648747840   10.74 10.41   9.945 F0V 28 0
23 V* V410 Car dS* 07 58 07.7467310088 -60 46 33.395362968   10.99 10.67   10.280 A7V 25 0
24 V* V392 Car SB* 07 58 10.4770762032 -60 51 57.409042680   9.69 9.48     A2Vp:Sr:Cr:Eu: 80 0
25 V* V417 Car dS* 07 58 14.0185178592 -60 39 02.268156204   10.6 10.5   10.154 A6V 26 0
26 CD-60 1969 Pe* 07 58 14.5217579496 -60 43 32.640844692   9.87 9.65   9.425 A2V 31 0
27 CPD-60 986 * 07 58 14.7347915520 -60 45 17.947335024   10.15 9.95   9.949 ~ 36 0
28 V* V418 Car dS* 07 58 19.7912917968 -60 49 38.479263708   11.30 10.97   10.574 A6/A7V 35 0
29 CD-60 1976 * 07 58 29.6867934672 -60 41 51.081972684   9.77 9.66   9.603 A0V 43 0
30 V* V419 Car dS* 07 58 30.9350301312 -60 37 46.501853340   10.94 10.60   10.197 A8V 34 0
31 V* V420 Car dS* 07 58 33.3112070184 -60 49 25.617767988   10.6 10.4   10.452 A3V 31 0
32 CD-60 1983 V* 07 58 34.6642741152 -60 42 04.909561920   10.667 10.262     A7III 27 0
33 CD-60 1984 V* 07 58 37.7988779376 -60 33 39.058915500   11.21 10.92   10.546 ~ 33 0
34 CD-60 1989 * 07 58 43.9116395928 -60 46 36.052484124   10.66 10.52     ~ 13 0
35 Cl* NGC 2516 DAC 613 V* 07 58 46 -60 53.1   11.72 11.28     ~ 9 0
36 NGC 2516 56 * 07 58 47.5969231776 -60 51 37.701594720   11.75 11.30   10.888 ~ 30 0
37 V* V421 Car dS* 07 58 51.4429528512 -60 40 02.803998972   11.13 10.88   10.494 A8V 41 0
38 CD-60 1993 * 07 58 53.0151207336 -60 36 10.592172072   9.95 9.78   9.542 A1/2V 31 0
39 CD-60 1996 * 07 59 02.7337557696 -60 47 49.004968092   11.05 10.77   10.453 A8V 37 0
40 NGC 2516 68 * 07 59 05.0237299728 -60 56 36.091484664   11.978 11.534   10.992 ~ 41 0
41 CD-60 1999 * 07 59 15.3747506928 -60 52 05.206060380   10.09 9.96   9.796 A1V 41 0
42 NGC 2516 32 SB* 07 59 19.5712452699 -60 58 32.187828840   11.33 11.19   10.561 ~ 27 0
43 CD-60 2006 * 07 59 44.2149408936 -60 40 18.994018080   9.94 9.70   9.362 A2V 40 0
44 CD-60 2008 * 07 59 55.6157612774 -60 41 58.117120835   11.085 10.750 10.763 10.385 A7V 30 0
45 HD 66442 * 08 00 03.7266156936 -60 46 32.321846064   9.31 9.20     A2V 31 0
46 NGC 2516 64 * 08 00 03.7738065864 -60 46 19.970918004   10.28 10.07 10.07   ~ 12 0
47 CD-60 2013 * 08 00 07.3422137952 -61 01 51.206141676   10.9 10.5     ~ 23 0
48 CD-60 2012 * 08 00 07.7033432328 -60 40 59.599144236   10.35 10.15 10.26 9.874 A1V 38 0
49 CD-60 2014 V* 08 00 21.4123980936 -60 49 12.519692328   11.58 11.16   10.588 ~ 28 0
50 CD-60 2017 * 08 00 34.4558383608 -60 42 55.967765400   10.00 9.92     A0V 36 0
51 NGC 3114 OpC 10 01 55.0 -60 02 16   4.47 4.2     ~ 213 0
52 IC 2606 GiG 10 50 17.6496881232 +37 57 22.425347340   14.8       ~ 22 0
53 NGC 5460 OpC 14 07 21.6 -48 16 48   5.85 5.6     ~ 111 0
54 NGC 6025 OpC 16 03 09.4 -60 26 59           ~ 117 0
55 NGC 7243 OpC 22 15 16.0 +49 50 07   6.54 6.4     ~ 133 0

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