Publication: The first extrasolar planet discovered with a new-generation high-throughput Doppler instrument
Loading...
Official URL
Full text at PDC
Publication Date
2006-09-01
Authors
otros, ...
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
American Astronomical Society
Abstract
We report the detection of the first extrasolar planet, ET-1 (HD 102195b), using the Exoplanet Tracker (ET), a new-generation Doppler instrument. The planet orbits HD 102195, a young star with solar metallicity that may be part of the local association. The planet imparts radial velocity variability to the star with a semiamplitude of 63.4 ± 2.0 m s^-1 and a period of 4.11 days. The planetary minimum mass (m sin i) is 0.488MJ ± 0.015M_J. The planet was initially detected in the spring of 2005 with the Kitt Peak National Observatory (KPNO) 0.9 m coudé feed telescope. The detection was confirmed by radial velocity observations with the ET at the KPNO 2.1 m telescope and also at the 9 m Hobby-Eberly Telescope (HET) with its High Resolution Spectrograph. This planetary discovery with a 0.9 m telescope around a V = 8.05 magnitude star was made possible by the high throughput of the instrument: 49% measured from the fiber output to the detector. The ET's interferometer-based approach is an effective method for planet detection. In addition, the ET concept is adaptable to multiple-object Doppler observations or very high precision observations with a cross-dispersed echelle spectrograph to separate stellar fringes over a broad wavelength band. In addition to spectroscopic observations of HD 102195, we obtained brightness measurements with one of the automated photometric telescopes at Fairborn Observatory. Those observations reveal that HD 102195 is a spotted variable star with an amplitude of ~0.015 mag and a 12.3 ± 0.3 day period. This is consistent with spectroscopically observed Ca II H and K emission levels and line-broadening measurements but inconsistent with rotational modulation of surface activity as the cause of the radial velocity variability. Our photometric observations rule out transits of the planetary companion.
Description
© 2006. The American Astronomical Society.
Artículo firmado por 20 autores.
We are grateful to Stuart Shaklan, Michael Shao, Chas Beichman, Richard Green, Skip Andree, Daryl Wilmarth, and the KPNO staff for their generous support and advice and to Larry Molnar for his help in the early photometric data acquisition. The HET observations, whose timings were critical, were made possible by the dedicated efforts of the HET staff. We are indebted to Sara Seager and Eric Agol for a number of stimulating discussions. We thank Aldo Martínez Fiorenzano for helping the line bisector analysis of HD 102195. We appreciate many valuable comments made by the referee, which helped to improve the paper quality. This work is supported by the National Science Foundation grant AST 02-43090, JPL, Pennsylvania State University, and the University of Florida. S. M. and J. v. E. acknowledge the JPL Michelson Fellowship funded by NASA. G. W. H. is grateful for the efforts of Lou Boyd at Fairborn Observatory and acknowledges support from NASA grant NCC5-511 and NSF grant HRD 97-06268. E. B. F. acknowledges the support of the Miller Institute for Basic Research. W. D. C., M. E., and R. A. W. were supported by NASA grants NNG04G141G and NNG05G107G to the University of Texas at Austin. The Hobby-Eberly Telescope (HET) is a joint project of the University of Texas at Austin, Pennsylvania State University, Stanford University, Ludwig-MaximilliansUniversität München, and Georg-August-Universität Göttingen. The HET is named in honor of its principal benefactors,William P. Hobby and Robert E. Eberly. D. M. was supported by the Universidad Complutense de Madrid and the Spanish Ministerio de Educación y Ciencia (MEC), Programa Nacional de Astronomía y Astrofísica under grant AYA2005-02750. D. M. is grateful to Raquel M. Martínez, Jesús Maldonado, and Benjamín Montesinos for their help during the observations. FOCES high-resolution optical spectra were based on observations collected at the Centro Astronómico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC). This research has made use of the SIMBAAD database, operated at ADC, Strasbourg, France.
UCM subjects
Unesco subjects
Keywords
Citation
Barden, S. C. 1985, ApJ, 295, 162
Barker, L., & Hollenbach, R. 1972, J. Appl. Phys., 43, 4669
Barnes, T. G., Moffett, T. J., & Slovak, M. H. 1986, PASP, 98, 223
Beckers, J. M., & Brown, T. M. 1978, Osser. Mem. Astrophys. Obs. Arcetri., 106, 189
Cochran, W. D., et al. 2004, ApJ, 611, L133
Duncan, D. K, et al. 1991, ApJS, 76, 383
Eaton, J. A., Henry, G. W., & Fekel, F. C. 2003, in The Future of Small Telescopes in the New Millennium, Volume II—The Telescopes We Use, ed. T. D. Oswalt ( Dordrecht: Kluwer), 189
Erskine, D. J. 2003, PASP, 115, 255
Erskine, D. J., & Ge, J. 2000, in ASP Conf. Ser. 195, Imaging the Universe in Three Dimensions: Astrophysics with Advanced Multi-Wavelength Imaging Devices, ed. W. van Breugel & J. Blland-Hawthorn (San Francisco: ASP), 501
ESA. 1997, The Hipparcos and Tycho Cataloques (ESA SP-1200; Noordwijk: ESA)
Favata, F., Barbera, M., Micela, G., & Sciortino, S. 1993, A&A, 277, 428
Fekel, F. C. 1997, PASP, 109, 514
Fischer, D. A., & Valenti, J. A. 2005, ApJ, 622, 1102
Fischer, D. A., et al. 2005, ApJ, 620, 481
Ford, E. B. 2005, AJ, 129, 1706
———. 2006, AJ, submitted (astro-ph/0412703)
Ge, J. 2002, ApJ, 571, L165
Ge, J., Erskine, D. J., & Rushford, M. 2002, PASP, 114, 1016
Ge, J., Mahadevan, S., van Eyken, J. C., DeWitt, C., Friedman, J., & Ren, D. 2004, Proc. SPIE, 5492, 711
Ge, J., et al. 2005, in Protostars and Planets V, LPI Contribution 1286, 8410
González, G. 1997, MNRAS, 285, 403
Gorskii, S. M., & Lebedev, V. P. 1977, Izv. Krym. Astrofizika Obs., 57, 2281016
Gray, D. F. 1992, The Observation and Analysis of Stellar Photospheres (2nd ed.; Cambridge: Cambridge Univ. Press)
Gray, R. O., et al. 2003, AJ, 126, 2048
Gunn, J. E., et al. 2006, AJ, 131, 2332
Hall, J. C. 1996, PASP, 108, 313
Harvey, J., et al. 1995, in ASP Conf. Ser. 76, GONG’94: Helio-and AstroSeismology from Earth and Space, ed. R. K. Ulrich, E. J. Rhodes, Jr., & W. Deppen (San Francisco: ASP),432
Henry, G. W. 1999, PASP, 111, 845
Henry, G. W., Baliunas, S. L., Donahue, R. A., Fekel, F. C., & Soon, W. 2000a, ApJ, 531, 415
Henry, G. W., Fekel, F. C., & Hall, D. S. 1995, AJ, 110, 2926
Henry, G. W., Marcy, G. W., Butler, R. P., & Vogt, S. S. 2000b, ApJ, 529, L41
Høg, E., et al. 2000, A&A, 355, L27
Jefferys, W. H., Fitzpatrick, M., J., & McArthur, B. E. 1987, Celest. Mech., 41, 39
Kozhevatov, I. E. 1983, Isseledovanie Geology.Aero.Fizika Solusta, 64, 42
Lomb, N. R. 1976, Ap&SS, 39, 447
Marcy, G., Butler, R. P., Fischer, D., Vogt, S., Wright, J. T., Tinney, C. G., & Jones, R. A. 2006, Prog. Theor. Phys. Supp., 158, in press
Marcy, G., Butler, R. P., Williams, E., Bildsten, L., Graham, J. R., Ghez, A. M., & Garrett, J. J. 1997, ApJ, 481, 926
Martínez Fiorenzano, A. F., Gratton, R. G., Desidera, S., Cosentino, R., & Endl, M. 2005, A&A, 442, 775
Mayor, M., & Queloz, D. 1995, Nature, 378, 355
McArthur, B., Jeffferys, W., & McCartney, J. 1994, BAAS, 26, 900
Montes, D., Fernández Figueroa, M. J., De Castro, E., Cornide, M., Latorre, A., & Sanz Forcada, J. 2000, A&AS, 146, 103
Montes, D., López Santiago, J., Gálvez, M. C., Fernández Figueroa, M. J., De Castro, E., & Cornide, M. 2001a, MNRAS, 328, 45
Montes, D., et al. 2001b, A&A, 379, 976
Noyes, R. W., Hartmann, L. W., Baliunas, S. L., Duncan, D. K., & Vaughan, A. H. 1984, ApJ, 279, 763
Paulson, D. B., Saar, S. H., Cochran, W. D., & Henry, G. W. 2004, AJ, 127, 1644
Pepe, F., et al. 2002, Messenger, 110, 9
Pfeiffer, M. J., et al. 1998, A&AS, 130, 381
Queloz, D., et al. 2001, A&A, 379, 279
Reid, I. N. 2002, PASP, 114, 306
Saffe, C., Gómez, M., & Chavero, C. 2005, A&A, 443, 609
Santos, N. C., Israelian, G., & Mayor, M. 2004, A&A, 415, 1153
Santos, N. C., et al. 2000, A&A, 361, 265
Sato, B., Fischer, D. A., Henry, G. W., et al. 2005, ApJ, 633, 465
Scargle, J. D. 1982, ApJ, 263, 835
Soderblom, D. R., Duncan, D. K., & Johnson, D. R. H. 1991, ApJ, 375, 722
Soderblom, D. R., Oey, M. S., Johnson, D. R. H., & Stone, R. P. S. 1990, AJ, 99, 595
Soderblom, D. R., et al. 1993, AJ, 105, 2299
Strassmeier, K., Washuettl, A.; Granzer, Th., Scheck, M., & Weber, M. 2000, A&AS, 142, 275
Stumpff, P. 1980, A&AS, 41, 1
Tonry, J., & Davis, M. 1979, AJ, 84, 1511
Valenti, J. A., & Fischer, D. A. 2005, ApJS, 159, 141
VandenBerg, D. A., & Clem, J. L. 2003, AJ, 126, 778
van Eyken, J., Ge, J., Mahadevan, S., & DeWitt, C. 2004a, ApJ, 600, L79
van Eyken, J., et al. 2004b, Proc. SPIE, 5492, 445
Wolszczan, A., & Frail, D. A. 1992, Nature, 355, 145
York, D. G., et al. 2000, AJ, 120, 1579