2003A&A...406..203P

Query : 2003A&A...406..203P

2003A&A...406..203P - Astronomy and Astrophysics, volume 406203-211 (2003/7-4)

Preparing the COROT space mission: Incidence and characterisation of pulsation in the lower instability strip.

PORETTI E., GARRIDO R., AMADO P.J., UYTTERHOEVEN K., HANDLER G., ALONSO R., MARTIN S., AERTS C., CATALA C., GOUPIL M.J., MICHEL E., MANTEGAZZA L., MATHIAS P., PRETORIUS M.L., BELMONTE J.A., CLARET A., RODRIGUEZ E., SUAREZ J.C., VUTHELA F.F., WEISS W.W., BALLEREAU D., BOURET J.-C., CHARPINET S., HUA T., LUEFTINGER T., NESVACIL N. and VAN'T VEER-MENNERET C.

Abstract (from CDS):

By pursuing the goal to find new variables in the COROT field-of-view we characterised a sample of stars located in the lower part of the instability strip. Our sample is composed of stars belonging to the disk population in the solar neighbourhood. We found that 23% of the stars display multiperiodic light variability up to a few mmag in amplitude, i.e., easily detectable on a single night of photometry. uvbyβ photometry fixed most of the variables in the middle of the instability strip and high-resolution spectroscopy established that they have vsini>100km/s. An analysis of the Rodriguez & Breger (2001A&A...366..178R) sample (δ Sct stars in the whole Galaxy) shows slightly different features, i.e., most δ Sct stars have a 0.05-mag redder (b-y)0 index and lower vsin i values. Additional investigation in the open cluster NGC 6633 confirms the same incidence of variability, i.e., around 20%. The wide variety of pulsational behaviours of δ Sct stars (including unusual objects such as a variable beyond the blue edge or a rapidly rotating high-amplitude pulsator) makes them very powerful asteroseismic tools to be used by COROT. Being quite common among bright stars, δ Sct stars are suitable targets for optical observations from space.

Abstract Copyright: ∼

Journal keyword(s): stars: variables: δ Sct - stars: statistics - stars: oscillations - open clusters and associations: individual: NGC 6633 - space vehicles

Simbad objects: 66

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Number of rows : 66
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 HD 166991 * 18 13 03.8306501688 +02 58 50.089539576   6.92 6.83     A1V 28 0
2 V* V2502 Oph gD* 18 17 04.8404548584 +01 00 20.632225968   6.91 6.61     F2V 116 0
3 HD 167946 * 18 17 14.3686357968 +05 45 12.901832820   7.35 7.33     A0 28 0
4 HD 167968 * 18 17 42.8343021528 -01 27 51.805897992   7.90 7.73     A1V 13 0
5 HD 169268 SB* 18 24 03.5875614672 -03 34 59.367405756   6.72 6.38     F0V 48 0
6 HD 169310 * 18 24 17.3875697208 -04 05 17.746089900   7.88 7.53     A8/9V 19 0
7 HD 169436 * 18 24 43.2984640464 -01 52 15.460510692   8.03 7.71     A9V 21 0
8 HD 169577 * 18 25 06.2453636880 +05 59 54.543164892   9.06 8.65     F1V 10 0
9 HD 169725 ** 18 26 03.37019 +00 46 49.7800           A5IV 47 0
10 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
11 HD 170274 * 18 28 24.0593954712 +03 46 47.379254196   8.19 7.88     A5V 22 0
12 HD 170699 dS* 18 30 41.1676993440 +04 30 38.996099028   7.14 6.94     A2III/IV 33 0
13 HD 170782 dS* 18 31 01.4521355112 +05 45 09.025754400   7.95 7.81     A2 18 0
14 HD 170818 * 18 31 28.9965420864 -01 38 05.535373884   7.54 7.20     F0V 35 0
15 HD 171149 * 18 33 22.7083484664 -05 54 42.189219396   6.381 6.354     B9V 53 0
16 HD 171234 dS* 18 33 31.7411728464 +01 54 12.842590752   8.14 7.92     A5IV 23 0
17 HD 171802 SB* 18 36 27.8342684736 +09 07 20.969709132   5.76 5.39     F5III 109 0
18 HD 171834 gD* 18 36 39.0746705736 +06 40 18.498612108   5.786 5.425     F3V 119 0
19 HD 171836 * 18 37 02.5735599024 -04 36 55.195050996   8.05 7.70     A8II 33 0
20 HD 172506 * 18 40 31.3024428576 +02 41 04.001727804   8.29 7.94     F0V 35 0
21 HD 172588 dS* 18 40 46.0970451360 +08 47 34.523716524   7.52 7.22     F0II-III 17 0
22 * del Sct dS* 18 42 16.4268984096 -09 03 09.188922060   5.04 4.71     F2II-III 507 0
23 HD 173073 * 18 43 26.4262904712 +03 47 08.573437032   7.83 7.65     A2/3IV/V 19 0
24 HD 173369 * 18 44 37.3788048624 +07 58 39.396489132   8.20 7.97     A2 14 0
25 HD 174162 * 18 49 15.4581433920 -00 58 53.229594180   7.4 7.9     A1V 21 0
26 * 7 Aql dS* 18 51 05.4084858336 -03 15 40.004971416   7.15 6.88     A9IV 23 0
27 V* V369 Sct dS* 18 51 16.8782664672 -06 21 11.161195200   9.76 9.35 9.39   K2III 38 0
28 * 8 Aql dS* 18 51 22.1582092680 -03 19 04.285074432   6.341 6.056     F0IV 49 0
29 HD 174866 ** 18 53 01.8095063952 -09 34 31.876691088   6.524 6.321     A4V 48 0
30 HD 175015 * 18 53 05.6630244264 +07 53 08.443721508   7.84 7.77     A0 13 0
31 HD 174966 dS* 18 53 07.8278738400 +01 45 19.691893476   7.95 7.69     A7III/IV 43 0
32 HD 175272 PM* 18 54 30.5920670520 +01 53 50.941207176   7.81 7.40     A0V 38 0
33 V* V1709 Aql gD* 18 54 54.3634752576 +01 07 17.706958896   7.714 7.36     F2V 48 0
34 HD 175250 * 18 54 54.6724168584 -10 30 58.622503176   7.12 7.06     ApEuCr 16 0
35 HD 175543 ** 18 55 48.6323936285 +03 26 59.196287995 10.380 8.880 7.610     A3IV 66 0
36 HD 175664 * 18 56 44.2696020528 -08 25 44.087384460   7.90 7.76     A1/2IV 13 0
37 HD 176112 dS* 18 58 20.4710443680 +08 32 20.673860964   8.24 8.00     F0 16 0
38 HD 176074 * 18 58 25.7042959680 +01 11 53.255484060   7.27 7.07     A5IV 20 0
39 HD 176921 * 19 02 49.2808293168 -07 43 32.815458516   8.28 7.97     A2III 12 0
40 HD 177064 dS* 19 02 53.6224388232 +05 20 33.869278716   7.98 7.71     A2 17 0
41 HD 177011 * 19 03 12.8951426832 -11 11 22.754341860   7.34 7.20     A0V 13 0
42 HD 177177 * 19 03 25.6399952400 +05 59 39.753990060   8.13 7.81     A2 12 0
43 HD 177178 PM* 19 03 32.2462397760 +01 49 07.443780204   5.991 5.815     A4IV/V 65 0
44 HD 177332 * 19 04 10.7060267136 +03 19 49.967085432   6.850 6.704     A5IV 40 0
45 HD 177552 * 19 05 18.5671518312 -01 30 43.932525840   6.846 6.506     F2II 65 0
46 HD 177702 dS* 19 05 42.9806700192 +04 16 42.680529552   7.56 7.32     A6V 18 0
47 HD 177959 * 19 06 33.6088023648 +06 53 25.625773248   7.45 7.26     A3 13 0
48 HD 178190 * 19 07 26.5165516992 +06 09 45.517479048   7.23 7.10     A2 11 0
49 HD 178265 * 19 07 39.0786626664 +06 59 00.453961752   7.45 7.18     F0 20 0
50 HD 178409 * 19 08 53.0203685808 -07 37 05.225460384   8.15 7.94     A1IV/V 7 0
51 * 19 Aql ** 19 08 59.9147881896 +06 04 23.584037700 5.590 5.570 5.230     F0III-IV 94 0
52 HD 178857 SB* 19 10 07.2843198960 +00 55 55.217355960   7.934 7.73     A3V 13 0
53 HD 179123 PM* 19 10 56.9298908616 +08 07 17.569430436   7.76 7.44     A5 24 0
54 HD 178954 * 19 10 58.2627890304 -06 37 18.733036908   6.96 6.85     A1/2V 17 0
55 HD 179739 SB* 19 13 30.6364081608 +06 39 05.465523996   8.19 7.91     A2 12 0
56 HD 179742 * 19 13 33.5080025832 +04 15 50.441729436   7.97 7.67     F0V 26 0
57 HD 179892 * 19 13 59.8126298544 +07 31 02.017496460   8.08 7.83     Am 30 0
58 HD 179939 * 19 14 10.0429568952 +07 45 50.716958724   7.38 7.23     A3 24 0
59 HD 180086 * 19 15 22.2910661760 -06 02 59.150308344   6.96 6.64     F0V 37 0
60 HD 181414 PM* 19 20 19.4882054232 +04 46 40.402306920 7.310 7.180 7.060     A2V 26 0
61 HD 181555 dS* 19 20 56.3037887280 +00 54 53.846956620   7.81 7.51     A9III 23 0
62 V* V1691 Aql dS* 19 25 01.5293919552 -04 53 04.419956796   6.831 6.499     F0V 52 0
63 HD 182623 SB* 19 25 38.1024407664 -02 03 40.014654444   7.92 7.81     B9V 16 0
64 HD 183265 * 19 28 40.3572157464 +03 41 38.240434932   7.35 7.32     A0V 12 0
65 * c Aql dS* 19 29 00.9869402808 +01 57 01.616825124   5.865 5.783     A0IVp 188 0
66 HD 185090 * 19 37 33.4429632504 -00 07 45.376332024   8.0 7.36     F0V 25 0

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