RX J0439.8-6809

RA 2000:   04:39:49.6 3 5 7 8
DEC2000: -68:09:02 3 5 7 8

Type:     CBSS

Discovery paper

ROSAT PSPC [c/s]: 1.35 1 7

NHgal [1021 cm-2]: 0.447

[rxj0439_fcv_trb96.gif; Ref. 7]


 
General Data
Spectra
mB [mag]:   21.5 4 5 7 8 B-V [mag]: -0.2 3 4 5 7 8 X-ray
D [kpc]:       LMC Mv [mag]:   2.9 7 10 UV
Porb [days]:   0.1404 6 8   Opt
i [deg] :         K [km/s] :        

 
 
X-ray Data
Model kT [eV] NH [1021 cm-2] L [erg/s]
blackbody 20-30 1 12 0.35 1 (1-2)*1038 1 12
WD atmosph 20-25 7 0.25-0.4 7 1.2*1038 7

 
 
Variability
Orbital X-ray:  
  optical: 0.15 mag [img] 6 8 10
Other X-ray: constant 1990-1997 [img] 1 10 12
  UV: const. within 1700 sec [img] 12
  optical: marginal 5 6 7 10

 
Other Data
Nebula [erg/s]: <1034.6 (OIII) 2 Outflow [km/s]:  
Radio [mJy]:    

 

References:

  1. Greiner J., Hasinger G., Thomas H.-C., 1994, A&A 281, L6 X-ray discovery, ROSAT data (kT, L)
  2. Remillard R.A., Rappaport S., Macri L.M., 1995, ApJ 439, 646 upper limit on ionization nebula
  3. Schmidtke P.C., Cowley A.P., 1995, IAU Circ. 6278 optical identification, B-V
  4. Reinsch K., van Teeseling A., Beuermann K., Thomas H.-C., 1996, in Röntgenstrahlung from the Universe, Eds. H.U. Zimmermann, J. Trümper, H. Yorke, MPE Report 263, p. 183 long-term variability
  5. van Teeseling A., Reinsch K., Beuermann K., Thomas H.-C., Pakull M.W., 1996, in Supersoft X-ray Sources, ed. J. Greiner, Lect. Notes in Phys. 472, Springer, p.115 optical identification, finding chart, spectroscopy, B photometry
  6. Schmidtke P.C., Cowley A.P., 1996, in Supersoft X-ray Sources, ed. J. Greiner, Lect. Notes in Phys. 472, Springer, p.123 optical identification, finding chart, orbital period
  7. van Teeseling A., Reinsch K., Beuermann K., 1996, A&A 307, L49 optical identification
  8. Schmidtke P.C., Cowley A.P., 1996, AJ 112, 167 optical identification, finding chart, orbital period
  9. Kahabka P., Ergma E., 1997, A&A 318, 108 scenario of SMC13-sources
  10. van Teeseling A., Reinsch K., Hessman F.V., Beuermann K., 1997, A&A 323, L41 photometry, double-degenerate binary
  11. Reinsch K., van Teeseling A., Beuermann K., Thomas H.-C., 1999, in Proc. "Highlights in X-ray Astronomy", eds. B. Aschenbach & M.J. Freyberg, Garching, June 1998, MPE Report 272, p. 70 long-term X-ray light curve
  12. van Teeseling A., Gaensicke B.T., Beuermann K., Dreizler S., Rauch T., Reinsch K., 1999, A&A 351, L27 HST/STIS ultraviolet spectroscopy
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This page is maintained by Jochen Greiner (jgreiner@aip.de) and Arne Rau (arau@aip.de)
last edited: January 27, 2000