IPs

V455 And
V515 And
AE Aqr
FO Aqr
V349 Aqr
XY Ari
V405 Aur
V647 Aur
HT Cam
MU Cam
DW Cnc
BG CMi
V709 Cas
V1025 Cen
V1033 Cas
TV Col
TX Col
UU Col
V2069 Cyg
V2306 Cyg
DO Dra
PQ Gem
V418 Gem
DQ Her
V1323 Her
V1460 Her
V1674 Her
EX Hya
NY Lup
V2400 Oph
V2731 Oph
V3037 Oph
V598 Peg
GK Per
AO Psc
HZ Pup
V667 Pup
WX Pyx
V1223 Sgr
V4743 Sgr
CC Scl
V1062 Tau
EI UMa
AX J1740.1
AX J1832.3
AX J1853.3
CTCV J2056
CXO J174954
IGR J04571
IGR J08390
IGR J15094
IGR J16500
IGR J16547
IGR J17014
IGR J17195
IGR J18151
IGR J18173
IGR J18308
IGR J19267
LAMOST 0240
PBC J0927.8
PBC J1841.1
RX J1804
RX J2015
RX J2113
RX J2133
RX J2306
Swift J0717
Swift J1839
Swift J2006
Swift J2138

Full Catalog

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EX Hydrae = 4U1228-29

Links to this object in VSX and in Swift BAT 157-month survey

A finding chart for EX Hya

SkyView image of EX Hya (see important notes).

Position:
  • Equatorial: 12h52m24.08s, -29d14m57.5s (Gaia)
  • Galactic: l=303.18, b=+33.62
Finding Chart:
Schwartz et al. (1979)
Brightness:
Optical: G=13.2 (Gaia); X-rays: 2.6x10-11 ergs cm-2s-1 (BAT 157m; 14-195 keV), X-rays: 1.7x10-11 ergs cm-2s-1 (4XMM-DR11)
IP Credential:
***** (Ironclad LLIP) Both the orbital and spin periods have been measured well beyond doubt.
Periods:
  • Orbital: 0.068233846 d = 1.6376123 hr= 5895.4043 s, see in optical and X-rays
    TDB(eclipse)=2437699.94179 + 0.068233846 E
    (Hellier & Sproats 1992) with 17.5yr cycle (?)
    O-C=-0.00027 + 0.00028sin[360(E/93500)+7]
  • Spin: 0.046546484 d = 67.02696937 min = 4021.6162 s, seen in optical photometry, optical spectroscopy and X-rays.
    T(max)= 2437699.8917(6)+0.046546484(9)E-7.3(4)x10-13E2+2.2(6)x10-19E3
    in HJDTT (Mauche et al. 2009)
  • Others: Sideband(s) seen only during outbursts.
Inclination:
~77 deg (partial eclipse)
Distance:
56.774 (56.726-56.824) pc (Gaia EDR3; parallax: 17.572+/-0.017 mas)

References

  1. Mumford 1964 (optical photometry)
  2. Mumford 1967 (optical photometry)
  3. Mumford 1969 (optical photometry)
  4. Mumford 1970 (optical photometry)
  5. Warner 1972 (optical photometry)
  6. Mumford 1976 (optical photometry)
  7. Watson, Sherrington & Jameson 1978 (X-rays)
  8. Cordova & Riegler 1979 (X-rays)
  9. Schwartz et al. 1979 (optical identification of X-ray sources)
  10. Papaloizou & Pringle 1980 (spin period evolution)
  11. Sherrington et al. 1980 (infrared photometry)
  12. Vogt, Krzeminski & Sterken 1980 (optical photometry)
  13. Breysacher & Vogt 1980 (optical spectroscopy)
  14. Cowley, Hutchings & Crampton 1981 (optical spectroscopy)
  15. Warner & McGraw 1981 (optical photometry)
  16. Frank et al. 1981 (infrared)
  17. Wade 1982 (optical spectrophotometry)
  18. Gilliland 1982 (optical spectroscopy and photometry)
  19. Sterken et al. 1983 (optical photometry)
  20. Willams 1983 (optical spectroscopy and finding charts)
  21. Cordova, Mason, & Kahn 1985 (X-rays)
  22. Shylaja 1985 (optical photometry)
  23. Jablonski & Busko 1985 (optical photometry)
  24. Cropper 1986 (optical polarimetry)
  25. Kaitchuck et al. 1987 (optical spectroscopy)
  26. Bond et al. 1987 (optical photometry during outburst)
  27. Heise et al. 1987 (X-rays)
  28. Hellier et al. 1987 (optical spectroscopy)
  29. Bookbinder & Lamb 1987 (radio)
  30. Beuermann & Osborne 1988 (X-rays)
  31. Rosen, Mason & Cordova 1988 (X-rays)
  32. Bond & Freeth 1988 (optical photometry)
  33. Imamura & Steiman-Cameron 1988 (optical QPO search)
  34. Norton & Watson 1989a (spin equilibrium)
  35. Norton & Watson 1989b (X-rays)
  36. Hellier et al. 1989 (optical photometry & spectroscopy during outburst)
  37. Siegel et al. 1989 (optical photometry)
  38. Reinsch & Beuermann 1990 (optical photometry)
  39. Eracleous, Patterson & Halpern 1991 (X-ray timing)
  40. Ishida 1991 (X-rays)
  41. Rosen et al 1991 (X-rays)
  42. Hellier 1991 (disk or not?)
  43. Eracleous, Halpern & Patterson 1991 (X-ray spectroscopy)
  44. Buckley & Schwarzenberg-Czerny 1992 (optical photometry)
  45. Hellier & Sproats 1992 (ephemeris)
  46. Hellier 1992 (X-ray timing)
  47. Stockman et al. 1992 (optical polarimetry)
  48. Hellier, Garlick & Mason 1993 (X-rays - orbital modulation)
  49. Singh & Swank 1993 (X-rays)
  50. Ishida et al. 1994 (X-rays)
  51. Ishida, Mukai & Osborne 1994 (X-rays)
  52. Fujimoto & Ishida 1997
  53. Dhillon et al. 1997 (infrared spectroscopy)
  54. Hurwitz et al. 1997 (extreme ultraviolet)
  55. Mauche, Lee & Kallman 1997 (ultraviolet spectroscopy)
  56. Greeley et al. 1997 (ultraviolet spectroscopy)
  57. Cropper, Ramsay & Wu 1998 (X-ray spectroscopy)
  58. Allan, Hellier & Beardmore 1998 (X-ray spectroscopy)
  59. Hellier, Mukai & Osborne 1998 (X-ray spectroscopy)
  60. Mukai 1999 (X-ray light curve model)
  61. Ezuka & Ishida 1999 (X-ray spectroscopy)
  62. Hellier 1999 (spin tomography)
  63. Cropper et al. 1999 (post-chock model with gravity)
  64. Mauche 1999 (far and extreme ultraviolet spectroscopy)
  65. King & Wynn 1999 (spin evolution)
  66. Hellier et al. 2000 (X-rays and optical during outburst)
  67. Ramsay 2000 (X-ray spectroscopy)
  68. Mauche, Liedahl & Fournier 2001 (X-ray spectroscopy)
  69. Eisenbart et al. 2002 (optical/infrared spectrophotometry and ultraviolet)
  70. Belle et al. 2002 (extreme ultraviolet)
  71. Mukai et al. 2003 (X-ray spectroscopy)
  72. Belle et al. 2003 (ultraviolet)
  73. Mauche, Liedahl & Fournier 2003 (X-ray spectroscopy)
  74. Vande Putte et al. 2003 (optical spectroscopy)
  75. Beuermann et al. 2003 (parallax)
  76. Hoogerwerf, Brickhouse & Mauche 2004 (X-ray spectroscopy)
  77. Hellier & Mukai 2004 (X-ray spectroscopy)
  78. Belle et al. 2005 (X-rays and optical)
  79. Suleimanov, Revnivtsev & Ritter 2005 (X-ray spcectroscopy)
  80. Hoogerwerf, Brickhouse & Mauche 2005 (X-rays)
  81. Hoogerwerf, Brickhouse & Mauche 2006 (X-rays)
  82. Mhlahlo et al. 2007a (optical spectroscopy)
  83. Evans & Hellier 2007 (X-rays - soft component search)
  84. Mhlahlo et al. 2007b (optical spectroscopy)
  85. Beuermann & Reinsch 2008 (optical spectrscopy)
  86. Mauche et al. 2009 (timings, ephemeris)
  87. Brunschweiger et al. 2009 (X-rays)
  88. Harrison et al. 2010 (infrared spectroscopy)
  89. Scaringi et al. 2010 (X-rays)
  90. Luna et al. 2010 (X-ray spectroscopy)
  91. Anzolin et al. 2010 (X-ray flickering)
  92. Yuasa et al. 2010 (X-ray spectroscopy)
  93. Hamilton et al. 2011 (infrared spectroscopy)
  94. Pekon & Balman 2011 (X-rays)
  95. Revnivtsev et al. 2011 (X-ray and optical photometry)
  96. Froning et al. 2012 (far ultraviolet)
  97. Godon et al. 2012 (far ultraviolet)
  98. Harrison et al. 2013 (infrared)
  99. Pretorius, Kingge & Schwope 2013 (space density)
  100. Andronov & Breus 2013 (optical photometry)
  101. Hayashi & Ishida 2014 (X-rays)
  102. Semena et al. 2014 (optical photometry)
  103. Semena & Revnivtsev 2014 (X-ray timing)
  104. Schlegel et al. 2014 (X-ray spectroscopy)
  105. Luna et al. 2015 (X-ray spectroscopy)
  106. Pagnotta & Zurek 2016 (optical imaging)
  107. Suleimanov et al. 2016 (X-ray spectroscopy)
  108. Echevarria et al. 2016 (optical photometry and spectroscopy)
  109. Hameury & Lasota 2017 (disk instability model for IPs)
  110. Isakova et al. 2017 (MHD simulation)
  111. Luna et al. 2018 (X-ray spectroscopy)
  112. Campana et al. 2018 (optical & multiwavelength)
  113. Suleimanov, Doroshenko & Werner 2019 (X-ray spectroscopy)


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