2009A&A...502..239Z

Query : 2009A&A...502..239Z

2009A&A...502..239Z - Astronomy and Astrophysics, volume 502, 239-252 (2009/7-4)

MOST observations of the young open cluster NGC 2264.

ZWINTZ K., HARETER M., KUSCHNIG R., AMADO P.J., NESVACIL N., RODRIGUEZ E., DIAZ-FRAILE D., WEISS W.W., PRIBULLA T., GUENTHER D.B., MATTHEWS J.M., MOFFAT A.F.J., RUCINSKI S.M., SASSELOV D. and WALKER G.A.H.

Abstract (from CDS):

Photometric time series obtained from space are one of the best ways to study pulsations in pre-main sequence (PMS) stars, especially as the corresponding amplitudes are at the millimagnitude level or below. We present high-precision time-series photometry of stars in the field of NGC2264 obtained with the MOST (Microvariability & Oscillations of STars) satellite. A search for pulsating A and F type members of NGC2264 with ultra-precise MOST photometry was conducted. 68 stars in the field of NGC2264 were observed simultaneously with the MOST satellite, 34 of which were previously identified as potential targets to search for PMS pulsation. The routines SigSpec and Period04 were used for the frequency analysis. We discovered pulsation in 4 potential A and F type PMS members of NGC2264 with frequencies between 2.7h and 23min. For one of the PMS pulsators identified with MOST after the first days of observation, simultaneous ground-based Stroemgren photometry was obtained with the OSN 0.9 m telescope and confirms the highest frequency identified in the MOST photometry. 26 stars with other (i.e., hotter and cooler) spectral types show clear variability: SPB and γ Doradus pulsation, red giant oscillations, eclipsing binaries and variability caused by rotational modulation.

Abstract Copyright: ∼

Journal keyword(s): stars: pre-main sequence - open clusters and associations: individual: NGC 2264 - δ Sct - techniques: photometric

Simbad objects: 72

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Number of rows : 72
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 NAME Mon I MoC 06 35 +10.1           ~ 256 0
2 HD 261054 Em* 06 38 09.1695289248 +09 29 05.236168848   10.04 9.78     O/B2 10 0
3 [K72c] 258 * 06 38 31.1432452560 +09 38 29.538688488     11.9     B8V 8 0
4 HD 261230 * 06 38 47.1631156320 +09 28 25.096548504   9.66 9.45     F0/2 12 0
5 V* V588 Mon dS* 06 39 05.9036624568 +09 41 03.432957252   9.93 9.75     A5/7 55 0
6 TYC 746-1829-1 * 06 39 08.0778562248 +09 16 32.866981716   12.91 10.95     F0: 3 0
7 HD 261355 * 06 39 09.5997445320 +09 31 46.400395908   8.57 8.23     A5/7 16 0
8 HD 47469 ** 06 39 11.173008 +09 38 45.45312   9.10 9.09 8.75   O/B2 25 0
9 HD 261387 * 06 39 20.7857941200 +09 33 50.928765732   10.90 10.87     A2/3 11 0
10 V* V589 Mon dS* 06 39 28.4641779744 +09 42 03.960230724   10.6 10.3     F0/2 60 0
11 HD 47554 * 06 39 35.4489871248 +09 45 08.870973876   8.16 7.86     F2V 25 0
12 HD 261585 * 06 39 52.8592053408 +09 28 07.465952136   11.2 11.0     A0/1 24 0
13 HD 261586 * 06 39 53.5866155304 +09 22 13.947787452   10.63 10.4     ~ 24 0
14 NGC 2264 33 * 06 39 55.7620743288 +09 34 28.369796016 16.988 14.12 11.67 10.83 8.870 M1 19 0
15 HD 261658 * 06 40 03.9921437952 +09 22 42.963084192   10.52 10.3     A0/1 15 0
16 HD 261657 * 06 40 04.8285078792 +09 34 46.667307864 10.95 10.91 10.88 10.94 10.95 A0/1 32 0
17 Cl* NGC 2264 VAS 20 Y*O 06 40 05.6546002440 +09 35 49.334398008 11.904   11.250   10.539 F5V 29 0
18 HD 261683 * 06 40 07.3431022704 +09 18 01.710298332   9.56 8.13     K5III 18 0
19 HD 261711 * 06 40 16.1932181208 +09 17 13.099059708   11.44 11.3     A2/3 24 0
20 HD 261737 * 06 40 21.4670833200 +09 41 50.567543880 10.895 10.8 10.6 10.418 10.289 A2/3 36 0
21 HD 261736 Y*O 06 40 24.7564257840 +09 46 08.205829968 9.53     9.305 8.787 A5/7 53 0
22 V* V641 Mon El* 06 40 28.5859725984 +09 49 04.274157468 7.257 7.98 8.10 8.147 8.165 B1.5IV+(B2V) 106 0
23 NGC 2264 70 * 06 40 37.1945604672 +09 26 51.307313712   11.63 11.25     G3 22 0
24 LS VI +09 13 Y*O 06 40 37.2542236848 +09 47 29.770640016 11.119 11.41 10.83 10.294 9.579 B1V 55 0
25 HD 261783 * 06 40 37.3305179736 +09 35 42.667656108 11.184 9.74 8.28   8.163 K4III 30 0
26 NGC 2264 68 TT* 06 40 37.4911055154 +09 54 57.888420413 12.466 12.38 11.745 11.336 10.969 F4V 50 0
27 V* V684 Mon EB* 06 40 38.3663658576 +09 47 16.046270268 7.71 8.31 8.44 8.492 8.516 B2.5V 79 0
28 HD 261782 Y*O 06 40 38.4203216808 +09 57 45.511747236 10.689 10.16 9.31 8.884 8.478 K1III 31 0
29 NGC 2264 84 TT* 06 40 42.1820308368 +09 33 37.422060732 12.575 12.57 12.01 11.74 11.33 G0 77 0
30 HD 47777 Y*O 06 40 42.2934096648 +09 39 21.310266708 6.95 7.79 7.93   7.721 B2IV 115 0
31 HD 261810 Y*O 06 40 43.2266749356 +09 46 01.720075195 8.26 8.92 9.02 9.045 9.039 B2.5Vn 64 0
32 HD 261809 * 06 40 43.2963115584 +10 08 30.557120604   11.2 10.8     A0/1 18 0
33 V* V642 Mon TT* 06 40 46.0829222016 +09 49 17.316325452 13.090 12.54 11.835 11.259 10.767 K1 49 1
34 NGC 2264 99 * 06 40 48.1769874768 +09 24 11.802112668   11.3 11.0 10.64 10.39 F5/7? 21 0
35 HD 261842 ** 06 40 48.48 +09 22 00.6           F3V 15 0
36 HD 261841 Y*O 06 40 48.8872907568 +09 51 44.404724628 10.263 10.11 9.98 9.912 9.758 B8IV-Ve 52 0
37 NGC 2264 104 Y*O 06 40 49.5383935824 +09 53 23.007134004 11.828 11.61 11.36 11.254 11.075 A5IV 37 0
38 HD 48012 Pu* 06 40 51.1606326792 +10 01 43.848813036 8.31 8.75 8.81   8.820 B6/9 41 0
39 NGC 2264 108 TT* 06 40 51.1854488784 +09 44 46.109300100 12.684 12.42 12.004 11.661 11.35 F8V 78 0
40 HD 261878 Y*O 06 40 51.5561543448 +09 51 49.380647832 8.42 8.98 9.08 9.149 9.191 B6V 65 0
41 HD 261879 * 06 40 51.8442080304 +09 39 07.472805084 10.661 10.77 10.77   10.768 A0/1 31 0
42 NGC 2264 OpC 06 40 52.1 +09 52 37           ~ 1793 0
43 NGC 2264 116 TT* 06 40 53.7704052192 +09 30 38.975534820 12.193 12.27 11.633 11.45 11.002 F7V 38 0
44 HD 261902 Y*O 06 40 58.5126133512 +09 33 31.721892912 9.88 10.20 10.23   10.174 B8 45 0
45 BD+10 1222 Y*O 06 41 00.0335922720 +09 52 17.871188556 9.42 9.82 9.88 9.932 9.929 A1V 43 0
46 HD 261904 Y*O 06 41 00.6874797312 +09 24 11.888973612   10.38 9.50     A0/1 38 0
47 BD+09 1340 Y*O 06 41 01.5552520368 +09 28 13.060448436   10.68 10.64 10.67 10.56 A0 29 0
48 HD 261938 Y*O 06 41 01.8776061384 +09 52 48.041278176 8.32 8.90 8.97 9.067 9.084 B3V 43 0
49 HD 261903 Y*O 06 41 02.8835159088 +09 27 23.465894652 8.65 9.03 9.10     B8Vn 34 0
50 HD 261940 Y*? 06 41 04.1121827040 +09 33 01.883923164 9.65 10.00 10.06   10.060 B8V(n) 40 0
51 HD 261937 Y*O 06 41 04.5662393952 +09 54 43.857027144 10.918 10.71 10.36 10.115 9.857 kA2hA2mA5V 51 0
52 HD 261939 TT* 06 41 04.7073214128 +09 36 26.706104244 11.008 11.03 10.96 10.98 10.815 B8 42 0
53 HD 261941 TT* 06 41 05.8757621928 +09 22 55.630818372   11.08 10.94     A2/3 45 0
54 HD 47887 Y*O 06 41 09.5990050152 +09 27 57.538520712 6.01 6.96 7.14   7.40 B0.7V 104 0
55 HD 261969 Y*O 06 41 10.3828156324 +09 53 01.830226399 9.76 9.96 9.95 9.914 9.863 B9IV 54 0
56 HD 262013 Y*O 06 41 12.9352165416 +09 35 49.916028588 8.75 9.15 9.21   9.229 ~ 50 0
57 HD 262014 Y*O 06 41 15.3017068824 +09 31 16.324176252 10.153 10.07 8.87   9.513 A7 31 0
58 NGC 2264 196 * 06 41 17.0086884240 +09 57 12.001592268 12.074 11.98 11.45   10.874 F5/7 20 0
59 HD 262041 Y*O 06 41 20.9860658688 +09 22 17.493435552   11.0 10.7     F0/2 17 0
60 HD 47934 mul 06 41 22.039344 +09 43 51.63204 8.19 8.62 8.70 9.03 8.632 B6 54 0
61 NGC 2264 209 Y*O 06 41 23.7852585720 +09 33 56.522316852 11.702 11.697 11.316 11.13 10.866 F0/2 36 0
62 HD 47961 Y*O 06 41 27.3048122400 +09 51 14.407496352 6.57 7.33 7.47   7.614 B2.5V 84 0
63 HD 262066 ** 06 41 30.09960 +09 49 47.1216           A2 31 0
64 HD 262110 Y*O 06 41 32.9186278800 +09 19 03.586728360   10.21 9.96   9.28 F0/2 23 0
65 HD 262108 * 06 41 34.6124873592 +09 51 37.917306504 10.177 10.1 10.0   9.701 A2/3 33 0
66 NGC 2264 224 * 06 41 37.1494030920 +09 20 59.912972232   11.79 11.43     F5V 26 0
67 HD 262109 * 06 41 37.4893324824 +09 43 40.051707600 11.326 11.22 10.85   10.489 F0/2 17 0
68 HD 262138 * 06 41 42.0646601184 +09 47 36.084971868 9.926 9.77 9.52   9.472 A2/3 23 0
69 NGC 2264 228 * 06 41 43.0282218720 +09 43 32.500999848 11.538 11.42 11.07   10.679 F0/2 27 0
70 HD 48055 V* 06 41 49.7115983832 +09 30 29.360973708 8.17 8.83 8.96   9.033 B2.5Vn 60 0
71 * eps Oph PM* 16 18 19.2902245358 -04 41 33.047349888 4.95 4.21 3.23 2.54 2.05 G9.5IIIbFe-0.5 235 0
72 NGC 6383 OpC 17 34 41.5 -32 34 23           ~ 156 0

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