2009MNRAS.396.1004P

Query : 2009MNRAS.396.1004P

2009MNRAS.396.1004P - Mon. Not. R. Astron. Soc., 396, 1004-1011 (2009/June-3)

LO Pegasi: an investigation of multiband optical polarization.

PANDEY J.C., MEDHI B.J., SAGAR R. and PANDEY A.K.

Abstract (from CDS):

We present BVR polarimetric study of the cool active star LO Pegasi (LO Peg) for the first time. LO Peg was found to be highly polarized among the cool active stars. Our observations yield average values of polarization in LO Peg: PB = 0.387±0.004 per cent, θB= 88°±1°; PV = 0.351±0.004 per cent, θV= 91°±1° and PR = 0.335 ±0.003 per cent, θR= 91°±1°. Both the degree of polarization and the position angle are found to be variable. The semi-amplitude of the polarization variability in B, V and R bands is found to be 0.18 ±0.02, 0.13±0.01 and 0.10±0.02 per cent, respectively. We suggest that the levels of polarization observed in LO Peg could be the result of scattering of an anisotropic stellar radiation field by an optically thin circumstellar envelope or scattering of the stellar radiation by prominence-like structures.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): polarization - stars: individual: LO Peg - stars: late-type

Simbad objects: 37

goto Full paper

goto View the references in ADS

Number of rows : 37
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 HD 12021 * 01 57 56.1374259408 -02 05 57.712014564   8.79 8.85     B8V 41 0
2 HD 236928 * 02 02 42.0929404728 +60 15 26.433482364   10.00 9.07     A4Ib 108 0
3 HD 14069 * 02 16 45.1936420248 +07 41 10.637150532   9.21 9.06     A0 61 0
4 V* CC Cas SB* 03 14 05.3361655368 +59 33 48.485582712 7.07 7.56 7.08     O8.5III(n)((f)) 308 0
5 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
6 HD 21447 * 03 30 00.1828170168 +55 27 06.506069256 5.160 5.140 5.090 5.01 5.02 A1Va 147 0
7 HD 25433 * 04 02 16.3535768280 -04 18 09.865994220   9.81 8.70     K1III 15 0
8 BD+52 913 WD* 05 05 30.6180977592 +52 49 51.919301604 10.25 11.44 11.69 11.93 12.108 DA.8 1153 0
9 V* AB Dor TT* 05 28 44.8712165880 -65 26 55.199147208 8.259 7.856 6.999 6.496 5.993 K0V 1080 0
10 V* TU Pyx AB* 09 10 15.7520082384 -19 54 50.421975300   10.97 9.50     M5 16 0
11 V* LQ Hya BY* 09 32 25.5683895648 -11 11 04.692242760 9.316 8.761 7.891 7.288 6.815 K1Vp 480 0
12 V* RS CVn RS* 13 10 36.9077924448 +35 56 05.584994412 8.57 8.51 7.93 7.7   F6IV+G8IV 753 0
13 * e Vir PM* 13 16 46.5148594512 +09 25 26.960139646   5.81   4.8   G0IV 590 1
14 V* BH CVn RS* 13 34 47.8087660104 +37 10 56.691826860 5.43 5.38 4.98 4.57 4.27 A6m 350 0
15 V* MS Ser BY* 15 58 43.9452509832 +25 34 10.427623284   9.21 8.347   7.201 G/K:e 110 0
16 V* EY Dra BY* 18 16 16.7795336184 +54 10 21.732232332   13.69 11.84     dM1.5e 75 0
17 HD 204827 SB* 21 28 57.7592315784 +58 44 23.238427956 8.63 8.74 7.94 7.25 6.76 O9.5IV 372 0
18 USNO-A2.0 1125-18463552 * 21 30 42.7847956632 +23 17 39.538174632   15.5   14.9   ~ 1 0
19 USNO-A2.0 1125-18463910 * 21 30 43.9509888672 +23 17 51.093243528   14.6   13.4   ~ 1 0
20 USNO-A2.0 1125-18465461 * 21 30 48.5372281224 +23 19 09.712329420   14.5   13.6   ~ 1 0
21 USNO-A2.0 1125-18466610 * 21 30 51.9540771648 +23 16 43.771189800   15.5   14.4   ~ 1 0
22 USNO-A2.0 1125-18466649 * 21 30 52.0566777144 +23 18 15.515989236   15.4   14.8   ~ 1 0
23 USNO-A2.0 1125-18466948 * 21 30 52.9958423424 +23 19 42.937433436   14.0   13.6   ~ 1 0
24 USNO-A2.0 1125-18467076 * 21 30 53.3678227128 +23 18 12.133071612   14.8   13.6   ~ 1 0
25 TYC 2188-700-1 * 21 30 54.6120056160 +23 22 11.923532832   12.47 12.46 11.3   ~ 2 0
26 USNO-A2.0 1125-18467687 * 21 30 55.2620491296 +23 21 09.030122748   15.5   14.8   ~ 1 0
27 USNO-A2.0 1125-18468115 * 21 30 56.6632432296 +23 16 46.905699216   15.3   14.3   ~ 1 0
28 USNO-A2.0 1125-18469000 * 21 30 59.3868067800 +23 15 47.548347768   15.8   14.9   ~ 1 0
29 BD+22 4409 BY* 21 31 01.7140062576 +23 20 07.374015564   10.240 9.245 8.6 7.965 K3Vke 187 0
30 USNO-A2.0 1125-18470176 * 21 31 03.1702039056 +23 21 41.907466116   14.5   13.7   ~ 1 0
31 USNO-A2.0 1125-18470313 * 21 31 03.5861662728 +23 17 50.418102984   14.7   13.8   ~ 1 0
32 TYC 2188-1288-1 * 21 31 06.8420045256 +23 18 01.063901160   12.78 10.96 10.8   ~ 3 0
33 USNO-A2.0 1125-18472836 * 21 31 11.2978612008 +23 15 59.493110364   15.9   15.0   ~ 1 0
34 TYC 2188-1177-1 * 21 31 11.4966894144 +23 20 22.376589576   13.12 12.67 12.9   ~ 1 0
35 USNO-A2.0 1125-18473126 * 21 31 12.1973394528 +23 17 54.018289392   15.6   15.1   ~ 1 0
36 V* HK Aqr BY* 23 08 19.5510173448 -15 24 35.766079704 13.4 12.282 10.872 9.964 9.019 M0Ve 219 0
37 NAME Pleiades Moving Group MGr ~ ~           ~ 297 0

To bookmark this query, right click on this link: simbad:objects in 2009MNRAS.396.1004P and select 'bookmark this link' or equivalent in the popup menu