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

Related Systems

Home Reviews IPs & Candidates Issues Links Gallery News

BG Canis Minoris = 3A0729+103

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

A finding chart for BG CMi

SkyView image of BG CMi (see important notes)

Position:
  • Equatorial: 07h31m28.99s, +09d56m23.1s (Gaia)
  • Galactic: l=208.48, b=+13.36
Finding Chart:
McHardy et al. (1984)
Brigntness:
Optical G=14.9 (Gaia); X-rays: 2.4x10-11 ergs cm-2s-1 (BAT 157m; 14-195 keV), 2.4/1.9x10-11 ergs cm-2s-1 (with power-law and APEC fits, both poor; 2SXPS)
IP Credential:
***** (Ironclad) The spin period has repeatedly been measured in X-rays and in the optical; while the orbital modulation is mostly tracked photometrically, it has been confirmed using optical spectroscopy.
Periods:
  • Orbital: 0.13474854 d = 3.2339650 hr = 11642.2741 s, see in optical and X-rays
    HJD(Eclipse) = 2445020.396(2)=0.13474854(10)E
    (Hellier 1997a; see, however, Kim et al. 2005)
  • Spin (?): 0.010572993 d = 15.225110 min = 913.50660 s, seen in optical photometry, optical spectroscopy and X-rays.
    HJD(max) = 2445020.27999(33)+0.010572993(4)E-3.86(9)x10^(-13)E^2
    (Hellier 1997a; see, however Kim et al. 2005 and Bonnardeau 2016)
  • Others: positive sideband in X-rays; 1083s in optical.
Inclination:
~65 deg? (has grazing eclipse)
Distance:
867 (843-893) pc (Gaia EDR3; parallax: 1.120+/-0.033 mas)

References

  1. Agrawal et al. 1984 (optical photometry)
  2. McHardy et al. 1984 (X-rays, optical photometry & spectroscopy)
  3. Penning 1985 (time-resolved optical spectroscopy)
  4. Mateo 1985 (optical spectroscopy)
  5. Penning, Schmidt & Liebert 1986 (optical polarimetry0
  6. Warner 1986 (optical sidebands)
  7. Falomo et al. 1987 (ultraviolet and optical spectroscopy & photometry)
  8. McHardy et al. 1987 (X-rays, optical photometry & spectroscopy)
  9. West, Berriman & Schmidt 1987 (infrared polarimetry)
  10. Bookbinder & Lamb 1987 (radio)
  11. Vaidya et al. 1988 (optical photometry)
  12. Norton & Watson 1989a (spin equilibrium)
  13. Norton & Watson 1989b (X-rays)
  14. Chanmugam et al. 1990 (cyclotron spectrum)
  15. Ishida 1991 (X-rays)
  16. Augustijn, van Paradijs & Schwarz 1991 (optical photometry)
  17. Hellier 1991 (disk or not?)
  18. Singh et al. 1991 (optical photometry)
  19. Hellier 1992 (X-ray timing)
  20. Norton et al. 1992 (X-rays)
  21. Stockman et al. 1992
  22. Hellier, Garlick & Mason 1993 (X-rays - orbital modulation)
  23. Patterson & Thomas 1993 (optical photometry)
  24. Garlick et al. 1994 (optical spectroscopy & photometry)
  25. de Martino et al. 1995 (ultraviolet, optical & infrared)
  26. Garlick 1996a (model of optical emission lines)
  27. Garlick 1996b (optical spectroscopy)
  28. Norton, Beardmore & Taylor 1996 (X-ray periodicities)
  29. Welsh & Martell 1996 (optical spectroscopy)
  30. Dhillon et al. 1997 (infrared spectroscopy)
  31. Hellier 1997 (spin-resolved optical spectroscopy)
  32. Cropper, Ramsay & Wu 1998 (X-ray spectroscopy)
  33. Hellier, Mukai & Osborne 1998 (X-ray spectroscopy)
  34. Ezuka & Ishida 1999 (X-ray spectroscopy)
  35. Hellier 1999 (spin tomography)
  36. Cropper et al. 1999 (post-chock model with gravity)
  37. Ramsay 2000 (X-ray spectroscopy)
  38. Suleimanov, Revnivtsev & Ritter 2005 (X-ray spectroscopy)
  39. Parker, Norton & Mukai 2005 (X-ray timing)
  40. Kim et al. 2005 (optical photometry)
  41. Choi et al. 2007 (X-rays)
  42. Brunschweiger et al. 2009 (X-rays)
  43. Scaringi et al. 2010 (X-rays)
  44. Yuasa et al. 2010 (X-ray spectroscopy)
  45. Bonnardeau 2016 (optical photometry)
  46. Suleimanov, Doroshenko & Werner 2019 (X-ray spectroscopy)
  47. Patterson et al. 2020 (optical photometry)
  48. Shaw et al. 2020 (X-ray spectroscopy)


Home Reviews IPs & Candidates Issues Links Gallery News

Please send your comments, suggestions etc. to Koji.Mukai@nasa.gov and/or Koji.Mukai@umbc.edu
NASA Logo, National Aeronautics and Space Administration
Goddard