2018A&A...617A..79P


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.25CET11:58:24

2018A&A...617A..79P - Astronomy and Astrophysics, volume 617A, 79-79 (2018/9-1)

Time-dependent spectral-feature variations of stars displaying the B[e] phenomenon. IV. V2028 Cygni: modelling of Hα bisector variability.

POLSTER J., KORCAKOVA D. and MANSET N.

Abstract (from CDS):

We present an alternative model of V2028 Cyg, a B[e] star of FS CMa type. The star V2028 Cyg is atypical among FS CMa stars due to its composite spectra of B4III and K2II-Ib type. Our modelling of the temporal variability of the Hα line bisectors indicates as the most probable model a geometrically and optically thick disc, which is surrounded by a dusty ring seen almost edge-on. This provides a possibility that the K-spectral component is formed in the disc.

Abstract Copyright: © ESO 2018

Journal keyword(s): stars: emission-line, Be - stars: mass-loss - accretion, accretion disks - binaries: spectroscopic - stars: individual: MWC 623

Simbad objects: 15

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Number of rows : 15

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 EM* GGA 2 LP* 00 50 05.9727482194 +64 45 35.076744599   12.406 11.545     Beq 20 0
2 NAME the Cold Spot ? 03 13 -20.5           ~ 45 0
3 HD 281192 Em* 03 45 14.7064722647 +29 45 03.244831234   9.974 9.80     A2 18 0
4 V* CI Cam HXB 04 19 42.1353986687 +55 59 57.708146070 12.13 12.41 11.77 10.79 9.99 B0/2I[e] 222 0
5 HD 45677 Be* 06 28 17.4219761127 -13 03 11.130589443 7.86 8.52 8.50 8.11 8.01 B2IV/V[e] 301 0
6 HD 50138 Ae* 06 51 33.3989891154 -06 57 59.445949919 6.28 6.68 6.67     A1Ib/II 196 0
7 TYC 175-3772-1 Em* 07 10 43.8683558311 +06 00 07.932803393   12.37 12.76 12.21   ~ 6 0
8 CD-31 5070 Em* 07 47 29.2996595357 -31 50 40.317059747 12.33 12.41 11.51 11.23   OBe 13 0
9 V* FX Vel bL* 08 32 35.7636438229 -37 59 01.478084319   9.77 9.72     A3III 22 0
10 HD 85567 Be* 09 50 28.5375203189 -60 58 02.950579275 8.16 8.67 8.57     B5Vne 76 0
11 V* AG Dra Sy* 16 01 41.0125687664 +66 48 10.131181273 11.50 11.06 9.74 8.52   K3IIIep 474 0
12 BD+23 3183 Em* 17 47 03.2745898360 +23 19 45.353256877   10.04 10.01     Be 10 0
13 EM* MWC 623 ** 19 56 31.5416098584 +31 06 20.123592142   11.98 10.92     K2Ib/II+B4III[e] 61 0
14 EM* GGR 71 Em* 22 26 38.7340819090 +61 13 31.562414603   13.55 12.47     B[e] 23 0
15 V* Z And Sy* 23 33 39.9551345052 +48 49 05.973842875 8.86 9.35 8.00     M2III+B1eq 499 0

    Equat.    Gal    SGal    Ecl

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2020.01.25-11:58:24

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