1998A&A...331..995A

Query : 1998A&A...331..995A

1998A&A...331..995A - Astronomy and Astrophysics, volume 331995-1001 (1998/3-3)

Pulsating and nonpulsating stars in Hyades observed by Hipparcos satellite.

ANTONELLO E. and PASINETTI FRACASSINI L.E.

Abstract (from CDS):

A study of the stars in the instability strip of Hyades cluster has been performed taking into account the new estimate of the stellar parallaxes. For taking advantage of the improved accuracy of the distances and hence absolute magnitudes it is necessary to separate the photometric effects of close companions, which appear quite common in Hyades. The δ Scuti stars, differently from nonpulsating stars, appear to be located also above the main sequence, and this is due probably to their large rotational velocity. The comparison of the rotational effects on the star position in the color-magnitude diagram with theoretical model predictions tends to confirm the importance of differential rotation. A brief discussion of θ2 Tau and some remarks on the X-ray emission of other two δ Scuti stars are also reported.

Abstract Copyright: ∼

Journal keyword(s): binaries: general - stars: distances - stars: fundamental parameters - stars: rotation - open clusters and associations: individual: Mel 25

Simbad objects: 21

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Number of rows : 21
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 * 51 Tau SB* 04 18 23.2109961408 +21 34 45.188971896   5.945 5.631     F0V 271 0
2 * h Tau dS* 04 19 57.7045712640 +14 02 06.732211488   5.856 5.568 5.407 5.250 F0IV 243 0
3 * 58 Tau dS* 04 20 36.3103641648 +15 05 43.630164636   5.475 5.242 5.126 4.999 F0IV-V 210 0
4 * 60 Tau dS* 04 22 03.5181398136 +14 04 37.912925064   6.054 5.710 7.05 5.38 kA3hF2mF2(III) 288 0
5 * del02 Tau PM* 04 24 05.7614531616 +17 26 38.871301956 5.07 4.95 4.80 4.64 4.57 A2Vs 261 0
6 * kap02 Tau dS* 04 25 25.0152469704 +22 11 59.995517604   5.544 5.264     F0Vn 156 0
7 * ups Tau dS* 04 26 18.4631232492 +22 48 48.889451555   4.572 4.282     A8Vn 189 0
8 * 71 Tau dS* 04 26 20.7708204936 +15 37 05.884087620   4.758 4.480 5.96 4.15 F0V 235 0
9 * 76 Tau SB* 04 28 23.4077842656 +14 44 27.451968756   6.227 5.892 5.694 5.501 F0IV 154 0
10 * tet02 Tau dS* 04 28 39.7416111456 +15 52 15.148738380 3.690 3.600 3.410 5.43   A7III 459 0
11 * b Tau PM* 04 28 50.1636212976 +13 02 51.367198596   5.226 5.014 4.907 4.795 kA5hF0VmF0 214 0
12 * 80 Tau ** 04 30 08.59775 +15 38 16.2194   5.887 5.552 5.358 5.161 F0V 189 0
13 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
14 HD 28527 dS* 04 30 33.6326139192 +16 11 38.449696416   4.975 4.764 6.52   A6IV 210 0
15 * 83 Tau ** 04 30 37.3629243168 +13 43 27.848332992   5.655 5.395 5.245 5.093 F0IV 163 0
16 * rho Tau dS* 04 33 50.9178322656 +14 50 39.941657592 4.98 4.90 4.65 4.41 4.29 A8V 237 0
17 * 89 Tau ** 04 38 09.4406126112 +16 01 59.722631112   6.102 5.776     F0V 133 0
18 * sig02 Tau PM* 04 39 16.5021952740 +15 55 04.711098316   4.842 4.665     A5Vn 154 0
19 HD 30034 PM* 04 44 25.8285113424 +11 08 46.083452208   5.638 5.379 5.230 5.082 F0V 140 0
20 * i Tau dS* 04 51 22.4635311552 +18 50 23.485866432   5.302 5.085 4.964 4.830 A7IV-V 187 0
21 * iot Tau ** 05 03 05.7465241272 +21 35 23.860305924   4.797 4.615     A7V 189 0

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