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

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

2003A&A...406..203P - Astronomy and Astrophysics, volume 406, 203-211 (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 - 2024 		#notes
1 HD 166991 * 18 13 03.8306501688 +02 58 50.089539576   6.92 6.83     A1V 25 0
2 V* V2502 Oph gD* 18 17 04.8404548584 +01 00 20.632225968   6.91 6.61     F2V 109 0
3 HD 167946 * 18 17 14.3686357968 +05 45 12.901832820   7.35 7.33     A0 24 0
4 HD 167968 * 18 17 42.8343021528 -01 27 51.805897992   7.90 7.73     A1V 12 0
5 HD 169268 SB* 18 24 03.5875614672 -03 34 59.367405756   6.72 6.38     F0V 45 0
6 HD 169310 * 18 24 17.3875697208 -04 05 17.746089900   7.88 7.53     A8/9V 16 0
7 HD 169436 * 18 24 43.2984640464 -01 52 15.460510692   8.03 7.71     A9V 20 0
8 HD 169577 * 18 25 06.2453636880 +05 59 54.543164892   9.06 8.65     F1V 9 0
9 HD 169725 ** 18 26 03.37019 +00 46 49.7800           A5IV 47 0
10 NGC 6633 OpC 18 27 22.8 +06 36 54           ~ 385 0
11 HD 170274 * 18 28 24.0593954712 +03 46 47.379254196   8.19 7.88     A5V 19 0
12 HD 170699 dS* 18 30 41.1676993440 +04 30 38.996099028   7.14 6.94     A2III/IV 32 0
13 HD 170782 dS* 18 31 01.4521355112 +05 45 09.025754400   7.95 7.81     A2 17 0
14 HD 170818 * 18 31 28.9965420864 -01 38 05.535373884   7.54 7.20     F0V 32 0
15 HD 171149 * 18 33 22.7083484664 -05 54 42.189219396   6.381 6.354     B9V 51 0
16 HD 171234 dS* 18 33 31.7411728464 +01 54 12.842590752   8.14 7.92     A5IV 22 0
17 HD 171802 SB* 18 36 27.8342684736 +09 07 20.969709132   5.76 5.39     F5III 103 0
18 HD 171834 gD* 18 36 39.0746705736 +06 40 18.498612108   5.786 5.425     F3V 112 0
19 HD 171836 * 18 37 02.5735599024 -04 36 55.195050996   8.05 7.70     A8II 29 0
20 HD 172506 * 18 40 31.3024428576 +02 41 04.001727804   8.29 7.94     F0V 33 0
21 HD 172588 dS* 18 40 46.0970451360 +08 47 34.523716524   7.52 7.22     F0II-III 16 0
22 * del Sct dS* 18 42 16.4268984096 -09 03 09.188922060   5.04 4.71     F2II-III 484 0
23 HD 173073 * 18 43 26.4262904712 +03 47 08.573437032   7.83 7.65     A2/3IV/V 18 0
24 HD 173369 * 18 44 37.3788048624 +07 58 39.396489132   8.20 7.97     A2 13 0
25 HD 174162 * 18 49 15.4581433920 -00 58 53.229594180   7.4 7.9     A1V 16 0
26 * 7 Aql dS* 18 51 05.4084858336 -03 15 40.004971416   7.15 6.88     A9IV 22 0
27 V* V369 Sct dS* 18 51 16.8782664672 -06 21 11.161195200   9.76 9.35 9.39   K2III 37 0
28 * 8 Aql dS* 18 51 22.1582092680 -03 19 04.285074432   6.341 6.056     F0IV 46 0
29 HD 174866 ** 18 53 01.8095063952 -09 34 31.876691088   6.524 6.321     A4V 46 0
30 HD 175015 * 18 53 05.6630244264 +07 53 08.443721508   7.84 7.77     A0 12 0
31 HD 174966 dS* 18 53 07.8278738400 +01 45 19.691893476   7.95 7.69     A7III/IV 40 0
32 HD 175272 PM* 18 54 30.5920670520 +01 53 50.941207176   7.81 7.40     A0V 33 0
33 V* V1709 Aql gD* 18 54 54.3634752576 +01 07 17.706958896   7.714 7.36     F2V 44 0
34 HD 175250 * 18 54 54.6724168584 -10 30 58.622503176   7.12 7.06     ApEuCr 13 0
35 HD 175543 ** 18 55 48.6323936285 +03 26 59.196287995 10.380 8.880 7.610     A3IV 65 0
36 HD 175664 * 18 56 44.2696020528 -08 25 44.087384460   7.90 7.76     A1/2IV 10 0
37 HD 176112 dS* 18 58 20.4710443680 +08 32 20.673860964   8.24 8.00     F0 15 0
38 HD 176074 * 18 58 25.7042959680 +01 11 53.255484060   7.27 7.07     A5IV 17 0
39 HD 176921 * 19 02 49.2808293168 -07 43 32.815458516   8.28 7.97     A2III 11 0
40 HD 177064 dS* 19 02 53.6224388232 +05 20 33.869278716   7.98 7.71     A2 14 0
41 HD 177011 * 19 03 12.8951426832 -11 11 22.754341860   7.34 7.20     A0V 12 0
42 HD 177177 * 19 03 25.6399952400 +05 59 39.753990060   8.13 7.81     A2 11 0
43 HD 177178 PM* 19 03 32.2462397760 +01 49 07.443780204   5.991 5.815     A4IV/V 62 0
44 HD 177332 * 19 04 10.7060267136 +03 19 49.967085432   6.850 6.704     A5IV 36 0
45 HD 177552 * 19 05 18.5671518312 -01 30 43.932525840   6.846 6.506     F2II 61 0
46 HD 177702 dS* 19 05 42.9806700192 +04 16 42.680529552   7.56 7.32     A6V 17 0
47 HD 177959 * 19 06 33.6088023648 +06 53 25.625773248   7.45 7.26     A3 12 0
48 HD 178190 * 19 07 26.5165516992 +06 09 45.517479048   7.23 7.10     A2 10 0
49 HD 178265 * 19 07 39.0786626664 +06 59 00.453961752   7.45 7.18     F0 19 0
50 HD 178409 * 19 08 53.0203685808 -07 37 05.225460384   8.15 7.94     A1IV/V 6 0
51 * 19 Aql PM* 19 08 59.9147881896 +06 04 23.584037700 5.590 5.570 5.230     F0III-IV 90 0
52 HD 178857 SB* 19 10 07.2843198960 +00 55 55.217355960   7.934 7.73     A3V 10 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 14 0
55 HD 179739 * 19 13 30.6364081608 +06 39 05.465523996   8.19 7.91     A2 10 0
56 HD 179742 * 19 13 33.5080025832 +04 15 50.441729436   7.97 7.67     F0V 25 0
57 HD 179892 * 19 13 59.8126298544 +07 31 02.017496460   8.08 7.83     Am 29 0
58 HD 179939 * 19 14 10.0429568952 +07 45 50.716958724   7.38 7.23     A3 23 0
59 HD 180086 * 19 15 22.2910661760 -06 02 59.150308344   6.96 6.64     F0V 35 0
60 HD 181414 PM* 19 20 19.4882054232 +04 46 40.402306920 7.310 7.180 7.060     A2V 25 0
61 HD 181555 dS* 19 20 56.3037887280 +00 54 53.846956620   7.81 7.51     A9III 22 0
62 V* V1691 Aql dS* 19 25 01.5293919552 -04 53 04.419956796   6.831 6.499     F0V 50 0
63 HD 182623 SB* 19 25 38.1024407664 -02 03 40.014654444   7.92 7.81     B9V 14 0
64 HD 183265 * 19 28 40.3572157464 +03 41 38.240434932   7.35 7.32     A0V 11 0
65 * c Aql dS* 19 29 00.9869402808 +01 57 01.616825124   5.865 5.783     A0IVp 182 0
66 HD 185090 * 19 37 33.4429632504 -00 07 45.376332024   8.0 7.36     F0V 24 0

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