1998A&AS..131...63C

Query : 1998A&AS..131...63C

1998A&AS..131...63C - Astron. Astrophys., Suppl. Ser., 131, 63-72 (1998/July-0)

Near infrared light variations of CP stars. The SiSrCrEu stars.

CATALANO F.A., LEONE F. and KROLL R.

Abstract (from CDS):

Twelve magnetic Chemically Peculiar (CP2) stars of the SiSrCrEu subgroup mostly brighter than the 7.5 visual magnitude have been investigated in the infrared at 1.25, 1.6 and 2.2µ. The stars HD 74521, HD 90044, HD 119419, HD 125630, and HD 187473 are clearly variable in the near infrared with the same period as the visible light, spectrum, and magnetic field variations. The stars HD 10783, HD 12447, HD 116458, HD 147010, HD 166469, HD 170397, and HD 223640 do show a smaller amount of variability, although with quite large a dispersion of the data. A remarkable result of the present investigation is that, at least for the stars for which contemporaneous observations are available, the observed infrared variations appear to be in phase with the variations in the long wavelength part of the visible. This may be an indication that the mechanism of the infrared variations should be the same as for the visible.

Abstract Copyright: ∼

Journal keyword(s): stars: chemically peculiar, stars: variables - infrared: stars

Simbad objects: 24

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Number of rows : 24
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 * omi Psc PM* 01 45 23.6252151720 +09 09 27.902640312 5.90 5.22 4.26 3.53 3.04 G8III 174 0
2 V* UZ Psc a2* 01 45 42.5323444416 +08 33 33.298063020 6.24 6.38 6.43     B8VpSi 135 0
3 * alf Psc A * 02 02 02.8219762236 +02 45 49.579059841   4.06 4.11     kA0hA7Sr 183 0
4 * 60 Cet PM* 02 03 11.6503068984 +00 07 42.629435904   5.579 5.423     A3IV 63 0
5 * b Cnc a2* 08 44 45.0357084768 +10 04 54.007285728 5.30 5.55 5.66     A1VpHgMnSiEu 190 0
6 * 50 Cnc PM* 08 46 56.0189914848 +12 06 35.830080180   5.992 5.885 7.20 5.76 A1Vp 99 0
7 * 25 Sex a2* 10 23 26.4782253528 -04 04 26.518221624 5.70 5.87 5.97     ApSiCr 135 0
8 * del Sex PM* 10 29 28.7028852361 -02 44 20.672813052   5.130 5.180     B9V 86 0
9 HD 115967 ** 13 22 52.6042523475 -72 08 48.182782972   6.10 6.05     B5V 48 0
10 * 67 Mus SB* 13 25 50.3011677024 -70 37 38.109211896   5.626 5.651     ApHg(Mn) 132 0
11 * K Cen * 13 29 25.2542678376 -51 09 54.473494356   5.081 5.030     A1V 37 0
12 V* V827 Cen a2* 13 44 16.0025041176 -51 00 44.822666448   6.323 6.440     ApSiCr 115 0
13 V* BS Cir a2* 14 23 32.0676955944 -66 38 42.121272156   6.88 6.76     ApSi(Cr) 58 0
14 HD 125990 * 14 25 39.7468365888 -66 10 22.514844180   6.479 6.362     A3V 32 0
15 HD 146284 * 16 16 26.6950070328 -24 16 55.013458692 6.7 6.835 6.712     B7IV 70 0
16 V* V933 Sco a2* 16 20 05.4927999744 -20 03 23.030685720   7.56 7.40     B8:VpSrTiSiEu 204 0
17 V* V4045 Sgr a2* 18 11 58.1620633344 -28 54 05.527987128   6.50 6.52     B9IV(pSrEuCr) 80 0
18 HD 167666 * 18 17 24.0863321904 -28 39 07.435556856   6.350 6.168     A5V 34 0
19 V* V432 Sct a2* 18 29 46.7597878008 -14 34 55.154828424   6.014 6.027     ApEuCrEu 105 0
20 HD 171130 * 18 33 39.0209168303 -14 51 13.011821357   5.768 5.735     A0/1V 41 0
21 V* V4064 Sgr a2* 19 51 10.2363708048 -27 28 19.045933896   7.27 7.32     Ap(EuSrCr) 49 0
22 HD 190285 * 20 05 12.0095308512 -26 48 47.754087084   7.31 7.22     A1V 26 0
23 * i01 Aqr * 23 44 12.0781022760 -18 16 37.018426728   5.152 5.239     B9V 97 0
24 * i03 Aqr Pe* 23 51 21.3383366673 -18 54 32.990905266 4.62 5.04 5.18     A0VpSiSr 207 0

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