2008A&A...489..911E


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.29CEST04:09:50

2008A&A...489..911E - Astronomy and Astrophysics, volume 489, 911-921 (2008/10-2)

Polarimetric measures of selected variable stars.

ELIAS II N.M., KOCH R.H. and PFEIFFER R.J.

Abstract (from CDS):

The purpose of this paper is to summarize and interpret unpublished optical polarimetry for numerous program stars that were observed over the past decades at the Flower and Cook Observatory (FCO), University of Pennsylvania. We also make the individual calibrated measures available for long-term comparisons with new data. We employ three techniques to search for intrinsic variability within each dataset. First, when the observations for a given star and filter are numerous enough and when a period has been determined previously via photometry or spectroscopy, the polarimetric measures are plotted versus phase. If a statistically significant pattern appears, we attribute it to intrinsic variability. Second, we compare means of the FCO data to means from other workers. If they are statistically different, we conclude that the object exhibits long-term intrinsic variability. Third, we calculate the standard deviation for each program star and filter and compare it to the standard deviation estimated from comparable polarimetric standards. If the standard deviation of the program star is at least three times the value estimated from the polarimetric standards, the former is considered intrinsically variable. All of these statements are strengthened when variability appears in multiple filters. We confirm the existence of an electron-scattering cloud at L1 in the β Per system, and find that LY Aur and HR 8281 possess scattering envelopes. Intrinsic polarization was detected for Nova Cas 1993 as early as day +3. We detected polarization variability near the primary eclipse of 32 Cyg. There is marginal evidence for polarization variability of the β Cepheid type star γ Peg. The other objects of this class exhibited no variability. All but one of the β Cepheid objects (ES Vul) fall on a tight linear relationship between linear polarization and E(B-V), in spite of the fact that the stars lay along different lines of sight. This dependence falls slightly below the classical upper limit of Serkowski, Mathewson, and Ford.

Abstract Copyright:

Journal keyword(s): polarization - binaries: close - Cepheids - circumstellar matter - accretion, accretion disks - dust, extinction

VizieR on-line data: <Available at CDS (J/A+A/489/911): stars.dat table12.dat table.dat>

Status at CDS:  

Simbad objects: 47

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Number of rows : 47

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * 33 Psc RS* 00 05 20.14193 -05 42 27.4279 6.52 5.65 4.61 3.83 3.29 K0III-IV 199 0
2 * 5 Cet bL* 00 08 12.0964497643 -02 26 51.738572672   7.58 6.22     K2IIICNIVp 113 0
3 HD 232121 Al* 00 10 42.0679098681 +54 53 29.360355721   9.67       B5+K3III 172 0
4 * gam Peg bC* 00 13 14.1512308 +15 11 00.936759 1.75 2.61 2.84 2.94 3.13 B2IV 659 0
5 * zet And RS* 00 47 20.3254696 +24 16 01.840851 6.05 5.18 4.06 3.21 2.62 K1III+KV 270 0
6 * 53 Ari bC* 03 07 25.6726547580 +17 52 47.971172068 5.18 5.997 6.117     B1.5V 131 1
7 * bet Per Al* 03 08 10.1324535 +40 57 20.328013 1.70 2.07 2.12 2.08 2.11 B8V 1144 2
8 V* SZ Cam bL* 04 07 49.2860550827 +62 19 58.627126529 6.82 7.26 6.93     O9.5Vn 205 1
9 NGC 1502 OpC 04 07 50 +62 19.9   7.47 6.9     ~ 167 1
10 HD 30353 sg* 04 48 53.3476426387 +43 16 32.094009964 8.05 8.22 7.76     A5Iap 132 0
11 * eps Aur Al* 05 01 58.1290610816 +43 49 23.871349520 3.86 3.53 2.99 2.47 2.02 A9Ia 553 0
12 * alf Aur SB* 05 16 41.35871 +45 59 52.7693 1.33 0.88 0.08 -0.52 -0.96 G3III: 1137 0
13 * 17 Aur Al* 05 18 18.8960029818 +33 46 02.520290896   6.102 6.144     B9V+B9.5V 283 0
14 * eta Ori Al* 05 24 28.61672 -02 23 49.7311 2.25 3.18 3.35 3.44 3.65 B1V+B2: 379 0
15 HD 35921 bL* 05 29 42.65002 +35 22 30.0896 6.23 6.96 6.85     O9II 228 0
16 * del Ori Al* 05 32 00.40009 -00 17 56.7424 0.96 2.02 2.41 2.32 2.54 B0III+O9V 741 0
17 HD 36485 SB* 05 32 00.4062922775 -00 17 04.345829128 5.97 6.67 6.83     B2Vsn 263 0
18 HD 43246 SB* 06 16 22.1983433965 +28 51 07.132404490   7.82 7.41     A0Vn+F5III 42 0
19 V* UX Mon Al* 07 59 16.3751282592 -07 30 17.889948033   8.74 8.42     A2/3+G/K 124 0
20 * 23 Sex Pu* 10 21 02.0057134197 +02 17 23.007047964 5.9 6.547 6.644     B2IV/V 102 0
21 V* TX UMa Al* 10 45 20.5033114027 +45 33 58.703967287   6.99 6.98     B8V+G0III-IV 272 0
22 * alf Vir bC* 13 25 11.57937 -11 09 40.7501 -0.20 0.74 0.97 1.06 1.30 B1V 815 2
23 * del Lib Al* 15 00 58.3457837927 -08 31 08.246917426 4.82 4.93 4.93 4.85 4.84 A0V 279 0
24 * alf CrB Al* 15 34 41.26800 +26 42 52.8940 2.19 2.22 2.24 2.21 2.25 A1IV 454 0
25 V* V600 Her Ce* 16 36 58.2041650076 +14 28 30.910552466 5.87 6.845 7.028     B0.5III 152 0
26 * bet Lyr bL* 18 50 04.7952472 +33 21 45.609978 2.85 3.42 3.42 3.31 3.29 B8.5Ib-II 886 0
27 * 2 Vul Pu* 19 17 43.63655 +23 01 31.9524 4.64 5.424 5.436     B0.5IV 131 1
28 V* V1143 Cyg EB* 19 38 41.1831603282 +54 58 25.642065005       5.6   F6Va 201 0
29 V* V380 Cyg Al* 19 50 37.3267138269 +40 35 59.129715394 4.86 5.613 5.680     B1.1III+B2.5/3V: 269 0
30 * 31 Cyg Al* 20 13 37.9108031301 +46 44 28.738836638 5.50 5.08 3.80 2.83 2.07 K3Ib+B2IV-V 351 0
31 * omi02 Cyg Al* 20 15 28.3216287393 +47 42 51.221859715 6.54 5.50 3.98 2.78 1.86 K7Ib-II+B1V 318 0
32 V* V367 Cyg bL* 20 47 59.5848515369 +39 17 15.722701131 8.080 7.680 6.990     A3Ibep 197 0
33 V* Y Cyg Al* 20 52 03.5773450587 +34 39 27.481355846 6.31 7.23 7.32     O9.5IV+O9.5IV 351 1
34 V* BW Vul bC* 20 54 22.3949148537 +28 31 19.182736153 5.47 6.40 6.54     B2IIIv 281 0
35 HD 206267 SB* 21 38 57.6182747705 +57 29 20.557311013 5.09 5.83 5.62   5.56 O6.0V((f))+O9:V 450 0
36 * del Cap Al* 21 47 02.4442395 -16 07 38.233507 3.22 3.12 2.83 2.59 2.43 kA5hF0mF2III 257 0
37 * 14 Cep SB* 22 02 04.5726568485 +58 00 01.308560227 4.77 5.551 5.542     O9IV(n)var+B1:V: 240 0
38 * 12 Lac bC* 22 41 28.6491950195 +40 13 31.619242453 4.24 5.080 5.229     B2III 343 0
39 V* AH Cep bL* 22 47 52.9411821102 +65 03 43.797787196 6.53 7.10 6.88     B0.2V+B2V 201 0
40 * 16 Lac bC* 22 56 23.6292923788 +41 36 13.948197878 4.61 5.436 5.587     B2IV 295 0
41 V* LN And bC* 23 02 45.14779 +44 03 31.5024 5.8 6.377 6.415     B2V 75 2
42 HD 218066 Be* 23 04 02.2015433256 +63 23 48.645418835 7.50 7.97 7.6     B1.5Vn 259 0
43 NAME III CEP ASSOC As* 23 04.2 +63 24           ~ 294 0
44 V* AR Cas Al* 23 30 01.9402842213 +58 32 56.100198639 4.18 4.760 4.886     B3V 196 1
45 V* V705 Cas No* 23 41 47.19 +57 30 59.5           ~ 178 0
46 HD 224559 Be* 23 58 46.4391020038 +46 24 47.442722137 5.84 6.444 6.538     B4Vne 127 1
47 * ome Psc SB* 23 59 18.6906375 +06 51 47.956190       3.8   F4V 132 0

    Equat.    Gal    SGal    Ecl

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2020.05.29-04:09:50

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