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
EI UMa
IGR 00234
IGR 17303
Swift J0732
RX J0704
RX J1803
RX J2133
XSS 00564
|
EX Hydrae = 4U1228-29
SkyView image
of EX Hya (see important notes).
- Position:
-
- Equatorial: 12h52m24.47s,
-29d14m57.5s (J2000)
- Galactic: l=303.19, b=+33.62
- Finding Chart:
- Schwartz et al. (1979)
- Brightness:
- V~13 in quiescence, 9.5 at peak of outbursts;
fx (2-10 keV)~8.7x10^(-11) ergs/cm/cm/s (ASCA)
- IP Credential:
- ***** (Ironclad)
- Periods:
-
- Orbital: 0.068233846 d = 1.637612394 hr= 5895.4s, 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: 0.046546504d = 67.02696576 min = 4021.617946s, seen in optical
photometry, optical spectroscopy and X-rays.
TDB(max)= 2437699.8914(5)+0.046546504(9)E-7.9(4)x10^{-13}E^2
(Hellier & Sproats 1992)
- Others: Sideband(s) seen only during outbursts.
- Inclination:
- ~77 deg (partial eclipse)
- Distance:
- 65+-11 pc (Eisenbart et al.
2002)
References
- Allan, Hellier & Beardmore 1998
- Belle et al. 2002
- Belle et al. 2003
- Belle et al. 2005
- Beuermann & Osborne 1988
- Beuermann et al. 2003
- Beuermann & Reinsch 2008
- Bond & Freeth 1988
- Bond et al. 1987
- Bookbinder & Lamb 1987
- Breysacher & Vogt 1980
- Buckley & Schwarzenberg-Czerny 1992
- Cordova & Riegler 1979
- Cordova, Mason, & Kahn 1985
- Cowley, Hutchings & Crampton 1981
- Cropper 1986
- Cropper, Ramsay & Wu 1998a
- Cropper et al. 1999
- Dhillon et al. 1997
- Eisenbart et al. 2002
- Eracleous, Patterson & Halpern 1991
- Eracleous, Halpern & Patterson 1991
- Evans & Hellier 2007
- Ezuka & Ishida 1999
- Frank et al. 1981
- Fujimoto & Ishida 1997
- Gilliland 1982
- Greeley et al. 1997
- Heise et al. 1987
- Hellier 1991
- Hellier 1992
- Hellier 1999
- Hellier & Sproats 1992
- Hellier & Mukai 2004
- Hellier et al. 1987
- Hellier et al. 1989
- Hellier, Garlick & Mason 1993
- Hellier, Mukai & Osborne 1998a
- Hellier et al. 2000
- Hoogerwerf, Brickhouse & Mauche 2004
- Hoogerwerf, Brickhouse & Mauche 2005
- Hoogerwerf, Brickhouse & Mauche 2006
- Hurwitz et al. 1997
- Ishida 1991
- Ishida et al. 1994a
- Ishida, Mukai & Osborne 1994b
- Jablonski & Busko 1985
- Kaitchuck et al. 1987
- King & Wynn 1999
- Mauche 1999
- Mauche, Lee & Kallman 1997
- Mauche, Liedahl & Fournier 2001
- Mhlahlo et al. 2007a
- Mhlahlo et al. 2007b
- Mukai et al. 2003
- Mumford 1964
- Mumford 1967
- Mumford 1969
- Mumford 1970
- Mumford 1976
- Norton & Watson 1989b
- Papaloizou & Pringle 1980
- Ramsay 2000
- Reinsch & Beuermann 1990
- Rosen, Mason & Cordova 1988
- Rosen et al 1991
- Schwartz et al. 1979
- Sherrington et al. 1980
- Shylaja 1985
- Siegel et al. 1989
- Singh & Swank 1993
- Sterken et al. 1983
- Stockman et al. 1992
- Suleimanov, Revnivtsev & Ritter 2005
- Vande Putte et al. 2003
- Vogt, Krzeminski & Sterken 1980
- Wade 1982
- Warner 1972
- Warner & McGraw 1981
- Watson, Sherrington & Jameson 1978
Please send your comments, suggestions etc. to
Koji.Mukai@nasa.gov
and/or
Koji.Mukai@umbc.edu
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