IPs

AE Aqr
FO Aqr
XY Ari
V405 Aur
HT Cam
MU Cam
DW Cnc
BG CMi
V709 Cas
V1025 Cen
TV Col
TX Col
UU Col
V2306 Cyg
YY Dra
PQ Gem
DQ Her
EX Hya
NY Lup
V2400 Oph
GK Per
AO Psc
WX Pyx
V1223 Sgr
V1062 Tau
RX J2133

Related Systems

Candidates

Position

• Equatorial: 07^h51^m17.33^s, +14^d44^m23.9^s (J2000, star 1)
• Galactic: l=206.06, b=+19.77

Finding Chart:

Mason et al. (1992)

Brigntness:

Optical ; fx (2-10 keV)~2.3x10^-11 ergs/cm²/s (ASCA)

Periods:

• Orbital: 0.211636 d = 5.1926 hr= 18693.4 s

  HJD=2449333.984(4)+0.216359(3)E

  (Hellier 1997a) for red-to-blue crossing of the emission lines, though there is some uncertainty over the cycle count.
• Spin: 0.009646 d = 13.89 min = 833.41 s, seen in X-rays and optical.

  HJD (I-max) = 2449297.9730(1) + 0.0096459939(17)E + 5.0(3)x10^(-13)E^2

  (Hellier 1997a)
  This ephemeris needs to be updated.
  See the complex X-ray spin pulse shapes.
• Others: 14.5 min sideband period.

Inclination:

Low? (little orbital modulation)

Distance:

This prototype soft IP is spinning down. Polarization is detected in R and I, suggesting B in the 8-18 MG range.

References

• Belloni et al. 1998
• Cash, Howell & Rosen 1998
• Cropper, Ramsay & Wu 1998a
• Cropper et al. 1999
• de Martino et al. 2004
• Dhillon et al. 1997
• Duck et al. 1994
• Evans, Hellier & Ramsay 2006
• Ezuka & Ishida 1999
• Haberl & Motch 1995
• Hellier 1997a
• Hellier 1999
• Hellier, Ramseyer & Jablonski 1994
• Hellier, Mukai & Osborne 1998a
• Hilditch & Bell 1994
• Howell et al. 1997
• Ishida 1991
• James et al. 2002
• Kiziloglu et al. 1998
• Mason 1997
• Mason et al. 1992
• Parker, Norton & Mukai 2005
• Piirola, Hakala & Coyne 1993
• Potter et al. 1997
• Rosen, Mittaz & Hakala 1993
• Somov, Somova & Najdenov 1998a
• Somov, Somova & Najdenov 1998b
• Stavroyiannopoulos et al. 1997
• Suleimanov, Revnivtsev & Ritter 2005
• Vaeth, Chanmugam & Frank 1996