1997A&A...327..145R


Query : 1997A&A...327..145R

1997A&A...327..145R - Astronomy and Astrophysics, volume 327, 145-154 (1997/11-1)

Dust around young stars. Photopolarimetric activity of the classical Herbig Ae/Be star RR Tauri.

ROSTOPCHINA A.N., GRININ V.P., OKAZAKI A., THE P.S., KIKUCHI S., SHAKHOVSKOY D.N. and MINIKULOV N.K.

Abstract (from CDS):

The classical Herbig Ae/Be (HAeBe) star RR Tau is known as a highly variable young star with an amplitude of variability of about 4mag in the V pass-band. In this paper we present the results of coordinated Crimea-Dodaira multi-band photo-polarimetric observations of this star which cover fully the observed interval of its brightness changes. Within the observed interval of its light variations the linear polarization of RR Tau anti-correlates with its brightness changes. The dependence of the linear polarization on the stellar magnitude agrees well with the model according to which the main source of the intrinsic polarization of RR Tau is scattered radiation by the circumstellar (CS) disk-like dust envelope (probably the protoplanetary disk) seen edge-on or under a small inclination to the line-of-sight, and that the brightness variations are caused by variable obscuration of the star by revolving circumstellar dust clouds. A comparison with previous photo-polarimetric observations of this star shows that the Stokes parameters of its polarized radiation are quite stable on a time scale of about 7 years. By using this fact we have separated the interstellar and intrinsic components of the observed polarization. The numerical modeling of the intrinsic linear polarization together with the colour-magnitude diagrams of RR Tau show that the circumstellar disk-like envelope around this star is strongly flattened and that the characteristic size of the grains is intermediate between that of interstellar dust and dust in the old protoplanetary disk of β Pictoris. We assume on the basis of this analysis that RR Tau is surrounded by a young protoplanetary disk and that it can be considered as a young progenitor of β Pictoris.

Abstract Copyright:

Journal keyword(s): stars: pre-main sequence - stars: variables - stars: individual: RR Tau - polarization - stars: circumstellar matter

VizieR on-line data: <Available at CDS (J/A+A/327/145): table1 table2>

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 V* UX Ori Ae* 05 04 29.9878898040 -03 47 14.286732072 10.25 10.93 8.70 9.62 9.43 A4IVe 351 1
2 V* CQ Tau Ae* 05 35 58.4666264136 +24 44 54.091450572 11.290 10.780 10.000   8.33 F5IVe 283 0
3 V* BF Ori Ae* 05 37 13.2623828280 -06 35 00.568242528 10.37 10.00 9.69 10.06 9.31 A7III 279 0
4 HD 245817 * 05 39 09.4792771488 +26 22 24.872878740   10.18 10.05     A: 6 0
5 V* RR Tau Ae* 05 39 30.5115918672 +26 22 26.967444996 11.64 12.09 11.28 10.58 10.17 A0:IVe 222 0
6 V* V351 Ori Ae* 05 44 18.7949456328 +00 08 40.410217104 9.44 9.22 8.87     A7V 107 0
7 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1781 1
8 * 9 Gem s*b 06 16 58.7058631680 +23 44 27.284070336 6.31 6.70 6.25 5.78 5.38 B3Iab 232 0
9 V* V856 Sco Ae* 16 08 34.2870044544 -39 06 18.325711332 7.66 7.41 7.05 6.92   A7IIIne_sh 370 0
10 V* WW Vul Ae* 19 25 58.7494120560 +21 12 31.333658616 11.46 10.99 10.25 10.38 10.12 A2IVe 220 0
11 EM* LkHA 224 Ae* 20 20 29.3503944888 +41 21 28.410038964 14.82 14.08 12.93 12.05 11.08 A4:Ve 98 0

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2022.05.22-01:29:26

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