2005AJ....130..789E

Query : 2005AJ....130..789E

2005AJ....130..789E - Astron. J., 130, 789-793 (2005/August-0)

High-mass triple systems: the classical cepheid Y Carinae.

EVANS N.R., CARPENTER K.G., ROBINSON R., KIENZLE F. and DEKAS A.E.

Abstract (from CDS):

We have obtained a Hubble Space Telescope STIS ultraviolet high-dispersion echelle-mode spectrum of the binary companion of the double-mode classical Cepheid Y Car. The velocity measured for the hot companion from this spectrum is very different from reasonable predictions for binary motion, implying that the companion is itself a short-period binary. The measured velocity changed by 7 km/s during the 4 days between two segments of the observation, confirming this interpretation. We summarize ``binary'' Cepheids that are in fact members of a triple system and find that at least 44% are triples. The summary of information on Cepheids with orbits makes it likely that the fraction is underestimated.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Close - Stars: Variables: Cepheids - Stars: Evolution - Stars: Fundamental Parameters

Simbad objects: 25

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Number of rows : 25
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 V* DL Cas cC* 00 29 58.5888773064 +60 12 43.065292140 10.66 9.88 8.63   7.582 G1Ib-IIHdel-1 349 0
2 V* BY Cas cC* 01 47 11.9194002672 +61 25 20.954139708   11.5 10.369     F5 132 0
3 * alf UMi cC* 02 31 49.09456 +89 15 50.7923 3.00 2.62 2.02 1.53 1.22 F8Ib 716 2
4 V* RX Cam cC* 04 04 58.4626302312 +58 39 35.218829196   8.85 7.70   6.233 G2Ib+A0V 217 0
5 * del03 Tau a2* 04 25 29.3847186643 +17 55 40.463442784   4.369 4.298 6.18 4.24 A2IV-Vs 429 0
6 V* AW Per cC* 04 47 46.3149227688 +36 43 22.033952832   8.46 7.51   6.200 F0+B6: 235 0
7 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
8 HD 72660 * 08 34 01.6141823952 -02 09 05.600032848   5.797 5.792     A0V 146 0
9 V* YZ Car cC* 10 28 16.8452893296 -59 21 00.678355560 9.79 9.11 8.24   7.443 G5 150 0
10 V* Y Car cC* 10 33 10.8500390952 -58 29 55.095062136   8.75 8.16     F0/3 152 0
11 V* S Mus cC* 12 12 47.0199008472 -70 09 06.439196664 7.58 8.80 8.33 7.39 5.196 F6Ib+B5V 275 0
12 * 26 Cir cC* 14 52 35.2587595008 -63 48 35.356730796   6.66 5.96   4.993 F8II 154 0
13 V* V636 Sco cC* 17 22 46.4815445448 -45 36 51.401229048   7.67 6.74   5.654 F7/8Ib/II 170 1
14 * gam01 Sgr cC* 18 05 01.2264355704 -29 34 48.322222356 5.99 5.47 4.69   3.869 G0Ib/II 366 0
15 V* V350 Sgr cC* 18 45 17.4968424336 -20 38 50.552766852   8.321 7.450 8.41 6.421 F8Ib/II 231 0
16 V* FF Aql cC* 18 58 14.7483041520 +17 21 39.297557628 6.61 6.18 5.38     F6Ib 380 0
17 V* S Sgr Mi* 19 19 25.9271018976 -19 01 24.755490732     9.50     M4.5e 47 0
18 V* U Aql cC* 19 29 21.3614645376 -07 02 38.662110240 8.41 7.71 6.61   5.270 F5I/II+B9.8V 298 0
19 V* U Vul cC* 19 36 37.7293294920 +20 19 58.576725768   8.368 7.162   5.556 F8Iab 244 0
20 V* SU Cyg cC* 19 44 48.7341456312 +29 15 52.895535048 7.10 6.88 6.44 6.06 5.84 F2Iab:+B8.0V 312 0
21 * 10 Sge cC* 19 56 01.2628947456 +16 38 05.262056412 6.45 6.03 5.36 6.81 4.789 F7Ib 369 0
22 V* MW Cyg cC* 20 12 22.8295152168 +32 52 17.841761616   10.71 9.45   7.882 F8.5-G2Ib 128 0
23 V* V1334 Cyg cC* 21 19 22.1791528656 +38 14 14.868825648   6.364 5.882     F1II+B7.0V 211 0
24 V* VZ Cyg cC* 21 51 41.4416202624 +43 08 02.542086024   10.02 8.60   7.948 G0 183 0
25 V* Z Lac cC* 22 40 52.1457028632 +56 49 46.083774432   9.71 8.57   7.164 F6Ib 245 0

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