WDS 10374-5837 SNA 10 Aa,Ab : NOTES
 
 
discov_num notes refcode
SNA 10 Aa,Ab: It is uncertain whether the 33mas companion corresponds to the
SB reported by Sota et al. (2014, ApJS 211, 10). If it does, the
orbital period is at least 5 years. Sna2014
HJ 4338 Herschel says "A very neat double star involved in a nebula." There is
perhaps a nebulouse patch running N and S, 5' x 1', but there is no
nebula surrounding this pair as suggested by h. Many small stars near. I__1916a
But what John Herschel was describing was the large (15' diam) object
NGC 3324; Herschel used the pair as the reference position for the
nebula. Innes was probably viewing at quite high magnification to
measure the double, and so missed the nebula. The pair is in fact the
principle source of fluorescing uv photons for the nebula! Skf2014
 
 
REFERENCES
 
 
refcode metd author reference
I__1916a Ma - Innes, R.T.A. 1916CiUO...33..249I
I__1916a Union Obs. Johannesburg Circ. 33, 249, 1916
Skf2014 C j Skiff, B.A. ...................
Skf2014 +E+ private communication, 2014 (may not be properly precessed)
Skf2014 +H+
Skf2014 +P+
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)
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
212 HJ Herschel, J.F.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10374-5837 SNA 10 Aa,Ab 2011 1 0 0.0 7.60 11.70 O6V V K 103722.27-583722.8

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