WDS 15169-6057 SNA 39 Aab,c : NOTES
 
 
discov_num notes refcode
HDO 245 del Cir. A variable and spectroscopic binary.
Primary is eclipsing binary of Algol-type, period 3.90247d. Zas2014
This "field" object may belong to the "Pis 20" group of Mel'nik &
Efremov (1995 SvAL 21, 10). The secondary classification is an
estimate from Stickland et al. (1993). Stc1993
The Hipparcos Catalogue contains an eclipsing light curve. HIP1997a
Classification of the B component of the optical pair is from Lindroos Lnd1985
(1985). Lindroos also finds a distance of 750 pc to this system. Msn1998a
SNA 39 Aab,c: The primary is del Cir, an ellipsoidal variable star. Penny et
al. (2001) performed a tomographic decomposition and found del Cir to Pny2001
be a triple system, with an eclipsing inner Aa,Ab pair (3.9d, a sin i
= 11.44 Rsun) and a RV-stable Ac component. Mayer et al. (2014) MyP2014
established the hierarchical nature of the system, obtaining a 1644d
period for the outer system. PIONIER clearly resolved the outer system
as a 3.78mas pair. We did not detect the dV=7.8 B companion of Mason Msn1998a
et al. (1998), but it may be just below our detection limit. Sna2014
 
 
REFERENCES
 
 
refcode metd author reference
HIP1997a Hh - Hipparcos 1997yCat.1239....0E
HIP1997a Hipparcos Catalog, ESA SP-1200, 1997 (incl. Hp photometry, vol. 10)
Lnd1985 - Lindroos, K.P. 1985A&AS...60..183L
Lnd1985 A&AS 60, 183, 1985
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
MyP2014 not - Mayer, P., Harmanec, P., Sana, H., & LeBouquin, J. 2014AJ....148..114M
MyP2014 AJ 148, 114, 2014
Pny2001 not - Penny, L.R., Seyle, D., Gies, D.R., Harvin, J.A., Bagnuolo, W.G., Jr., 2001ApJ...548..889P
Pny2001 Thaller, M.L., Fullerton, A.W., & Kaper, L.
Pny2001 ApJ 548, 889, 2001
Sna2014 Kv j Sana, H., LeBouquin, J.-B., Lacour, S., Berger, J.-P., Duvert, G., Gauchet, L., 2014ApJS..215...15S
Sna2014 +A Norris, B., Olofsson, J., Pickel, D., Zins, G., Absil, O., de Koter, A.,
Sna2014 Kratter, K., Schnurr, O., & Zinnecker, H.
Sna2014 ApJS 215, 15, 2014
Sna2014 (NACO companions in Table 6 assumed physical if quoted probability of spurious
Sna2014 detection <10%, optical if >90%, otherwise indeterminate)
Stc1993 not - Stickland, D.J., Koch, R.H., Pachoulakis, I., & Pfeiffer, R.J. 1993Obs...113..204S
Stc1993 Observatory 113, 204, 1993
Zas2014 - Zasche, P. ...................
Zas2014 private communication, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 HDO Harvard Obs.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15169-6057 SNA 39 Aab,c 2012 1 132 0.0 5.40 7.20 O7.5V NV K 151656.90-605726.1

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