WDS 08095-4720 DUN 65 BD (Suhail al muhlif) : NOTES
 
 
discov_num notes refcode
DUN 65 A: gam 2 Vel. Spectrum WC8+O7.5e, probably the nearest Wolf Rayet.
B: gam 1 Vel. CD-46@3846. Variable, spectrum B1IV.
AB: Both components are spectroscopic binaries.
The AB pair was formerly known as DUN 64.
I 1175 DE: DE is I 1175 (= RST 4878) at 08 09.5 -47 25.
The Hipparcos distance suggests a position in front of the Vel OB2
association (van der Hucht et al. 1997 NewA 2, 245; Schaerer et al.
1997 ApJ 484, L153) at a distance of 258 +41/-31 pc; however, the
Hipparcos distances for the B stars in Vel OB2 (Brandt et al. 1971 ApJ
1623, L99) yield a comparable distance of 317 +/- 42 pc. This is also
consistent with the distance from the resolution of the binary by
Hanbury Brown et al. (1970) of 350 +/- 50 pc. Thus, we have chosen to HBr1970
keep gam 2 Vel as a member of Vel OB2. Classification is from van der
Hucht et al. (1997). The B component was also observed and appeared
to be single. Classifications of the B, C, and D components are from Msn1998a
Hoffleit & Warren (1991). Hof1991
TOK 2 Aa: The primary is a close WR+O binary. Although the pair is
unresolved, VLTI/AMBER observations on 2004.984 over baselines of
46-85m and wavelength range 1950-2170 nm are fit by a binary model
giving a separation of 3.65 +/- 0.06 mas, position angle 72.7 +/- 8.7
deg, flux ratio 0.62 +/- 0.04 (dm 0.52 +/- 0.07 mag. MiF2007
Intensity Interferometer Limb-darkened diameter 0.44 +/- 0.05 mas. HBr1974
 
 
REFERENCES
 
 
refcode metd author reference
HBr1970 - Hanbury Brown, R., Davis, J., Herbison-Evans, D., & Allen, L.R. 1970MNRAS.148..103H
HBr1970 MNRAS 148, 103, 1970
HBr1974 - Hanbury Brown, R., Davis, J., & Allen, L.R. 1974MNRAS.167..121H
HBr1974 MNRAS 167, 121, 1974
Hof1991 - Hoffleit, D. & Jaschek, C. 1991bsc..book.....H
Hof1991 The Bright Star Catalogue, Fifth Revised Edition (preliminary version), 1991
MiF2007 Kv - Millour, F., Petrov, R.G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., 2007A&A...464..107M
MiF2007 Tallon-Bosc, I., Tallon, M., Thiebaut, E., Vakili, F., Malbet, F., Mourard, D.,
MiF2007 et al.
MiF2007 A&A 464, 107, 2007
Msn1998a Sc j Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G., 1998AJ....115..821M
Msn1998a ten Brummelaar, T.A., & McAlister, H.A.
Msn1998a AJ 115, 821, 1998
 
 
DISCOVERER
 
 
idgroup discov author
1 DUN Dunlop, J.
3 I Innes, R.T.A.
7 I MNRAS 57, 533, 1897 (data also in I__1897b,
7 I I__1897c)
93 TOK Tokovinin, A.A.
140 TOK Tokovinin, A.A., Balega, Y.Y., Pluzhnik, E.A., Shatsky, N.I., Gorynya, N.A., &
140 TOK Weigelt, G.
154 TOK Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
154 TOK Martinez, M., & Mondaca, E.
222 TOK Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
222 TOK Ratzloff, J. & Walter, F.M.
305 WSI Douglass, G.G., Hindsley, R.B., & Worley, C.E.
314 WSI Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L.,
314 WSI Hennessy, G.S., Hall, D.M., Urban, S.E., et al.
317 WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Holdenried, E.R., Platais, I.,
317 WSI Rafferty, T.J., Hall, D.M., Hennessy, G.S., et al.
318 WSI Mason, B.D., Hartkopf, W.I., Urban, S.E., Wycoff, G.L., Pascu, D., Hall, D.M.,
318 WSI Hennessy, G.S., Platais, I., et al.
319 WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Pascu, D., Urban, S.E., Hall, D.M.,
319 WSI Hennessy, G.S., Rafferty, T.J., et al.
346 WSI Mason, B.D., Hartkopf, W.I., Bredthauer, G., Ferguson, E.W., Finch, C.T., Kilian,
346 WSI C.M., Rafferty, T.J., Ragan, T.J. & Wieder, G.D.
356 WSI Mason, B.D., Williams, S.J., Matson, R.A., Josties, J.D., Eakens, P.D., Justice,
356 WSI M., Kilian, C.M. & Warner, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
08095-4720 DUN 65 BD 2000 6 117 94.5 4.14 9.40 N 080929.32-472043.0
08095-4720 DUN 65 BD 2015 9 117 94.4 4.14 9.40 B1IV+O9I N 080929.32-472043.0

If you need more information about this double, apply for a data request form to the WDS.