Notes for CM Dra

update: 25 March 2000

The planet(s):

• Detection method: Transits
• Remarks: Not confirmed; see comments by J. Schneider
  The timing of eclipses set limts on planets in the (a = 0.5 - 2 AU, M > 1 M_Jup) region (Deeg et al. 2000)
• References:
  1. DEEG H., DOYLE L., KOZVENIKHOV V., MARTIN E., OETIKER B., PALAIOLOGOU M., SCHNEIDER J., AFONSO C., DUNHAM E., JENKINS J., NINVOV Z., STONE R. & ZAKHAROVA E., 1998
     Near-Term Detectability of Terrestrial Extrasolar Planets: TEP Network Observations of CM Draconis
     Astron. & Astrophys., 338, 479
     abstract and preprint
  2. DEEG H., MARTIN E., DOYLE L., JENKINS J., SCHNEIDER J., CHEVRETON M., & PALAIOLOGOU M., 1997
     The TEP network - a search for transit of extrasolar planets: observations of CM Draconis in 1994
     Astron. & Astrophys. Transac., 13, 233
     paper
  3. DEEG Hans et al. 1996
     IAUC 6425
  4. DEEG H. et al., 1998
     (counter statement that Guinan's detection is not valid) IAUC6875
     circular
  5. DEEG H., DOYLE L., KOZHEVNIKOV V., BLUE E., MARTIN E. & SCHNEIDER J., 2000
     A Search for Jovian-Mass Planets Around CM Draconis Using Eclipse Minima Timing.
     Astron. Astrophy., accepted
     preprint
  6. DOYLE L., DEEG H., KOSHEVNIKOV ., BLUE E., OETTIKER, ROTTLER L., MARTIN E., STONE , NINKOV Z., JENKINS J., SCHNEIDER J., DUNHAM E., DOYLE & PALEOLOGOU, 2000
     Observational Limits on Terrestrial-Sized Inner Planets Around the CM Draconis System Using the Photometric Transit Method With a Matched-Filter Algorithm .
     ApJ., accepted
     preprint
  7. DOYLE L., , DEEG, H.J., JENKINS, J. M., SSCHNEIDER, J., NINKOV, Z., STONE, R., GOETZGER, H., FRIEDMANN, B., BLUE, J. E. & DOYLE, M.F.1997
     Detectability of Jupiter-to-Brown-Dwarf-Mass Companions Around Small Eclipsing Binary Systems.
     in Brown Dwarfs and Extrasolar Planets (Tenerife 1997) eds. R. Rebolo et al., ASP conf series, in print.
     paper
  8. GUINAN E. F., MCCOOK G. P., WRIGHT S. R., BRADSTREET D. H, 1997
     Eclipsing Binaries as Astrophysical Laboratories: Evidence of a Jupiter-size Planet Orbiting the Short Period Eclipsing Binary CM Draconis
     BAAS, 190, #26.09
     abstract
  9. GUINAN E. F., BRADSTREET D. H., RIBAS I., WOLF M. & MCCOOK G. P. 1998
     "Brown Dwarf Detected in the CM Dra Binary System" AAS...192.1213
     < ahref="http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?bibcode=J98-06408&db_key=AST&nosetcookie=1&high=00091">abstract
  10. GUINAN E. et al., 1998
      IAUC6864
      circular
  11. GUINAN Ed 1996
      IAUC 6423
  12. GUINAN E., McCOOK G., WRIGHT S. & SCHNEIDER J., 1997
      Possible Planetary Transit Eclipse for CM Draconis
      in 189th Meeting of the American Astronomical Society
      12-16 January 1997 -- Toronto, Ontario, Canada
      abstract
• Other Web pages:
  • TEP network of observing telescopes dedicated to planetary transits.
  • light curve for July 1995 possible transit
  • 5 dips in CM Dra light curve
  • Page of Ed Guinan

The star:

• Distance: ~ 14.7 pc
• Spectral type: dM4 - dM4
• Apparent magnitude: m_V = 12.9
• Absolute luminosity:
• Coordinates (2000):    RA = 16 34 24       DEC = +57 09.0
• More data:
  • Basic Data (from simbad )
  • Most recent refs. (from ADS; enter ` CM Dra ' in the `objects' field)

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