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J/A+A/609/A117    CARMENES radial velocity curves of 7 M-dwarf (Trifonov+, 2018)

The CARMENES search for exoplanets around M dwarfs. First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems. Trifonov T., Kuerster M., Zechmeister M., Tal-Or L., Caballero J.A., Quirrenbach A., Amado P.J., Ribas I., Reiners A., Reffert S., Dreizler S., Hatzes A.P., Kaminski A., Launhardt R., Henning T., Montes D., Bejar V.J.S., Mundt R., Pavlov A., Schmitt J.H.M.M., Seifert W., Morales J.C., Nowak G., Jeffers S.V., Rodriguez-Lopez C., del Burgo C., Anglada-Escude G., Lopez-Santiago J., Mathar R.J., Ammler-von Eiff M., Guenther E.W., Barrado D., Gonzalez Hernandez J.I., Mancini L., Stuermer J., Abril M., Aceituno J., Alonso-Floriano F.J., Antona R., Anwand-Heerwart H., Arroyo-Torres B., Azzaro M., Baroch D., Bauer F.F., Becerril S., Benitez D., Berdinas Z.M., Bergond G., Bluemcke M., Brinkmoeller M., Cano J., Cardenas Vazquez M.C., Casal E., Cifuentes C., Claret A., Colome J., Cortes-Contreras M., Czesla S., Diez-Alonso E., Feiz C., Fernandez M., Ferro I.M., Fuhrmeister B., Galadi-Enriquez D., Garcia-Piquer A., Garcia Vargas M.L., Gesa L., Gomez Galera V., Gonzalez-Peinado R., Groezinger U., Grohnert S., Guardia J., Guijarro A., de Guindos E., Gutierrez-Soto J., Hagen H.-J., Hauschildt P.H., Hedrosa R.P., Helmling J., Hermelo I., Hernandez Arabi R., Hernandez Castano L., Hernandez Hernando F., Herrero E., Huber A., Huke P., Johnson E., de Juan E., Kim M., Klein R., Klueter J., Klutsch A., Lafarga M., Lampon M., Lara L.M., Laun W., Lemke U., Lenzen R., Lopez del Fresno M., Lopez-Gonzalez J., Lopez-Puertas M., Lopez Salas J.F., Luque R., Magan Madinabeitia H., Mall U., Mandel H., Marfil E., Marin Molina J.A., Maroto Fernandez D., Martin E.L., Martin-Ruiz S., Marvin C.J., Mirabet E., Moya A., Moreno-Raya M.E., Nagel E., Naranjo V., Nortmann L., Ofir A., Oreiro R., Palle E., Panduro J., Pascual J., Passegger V.M., Pedraz S., Perez-Calpena A., Perez Medialdea D., Perger M., Perryman M.A.C., Pluto M., Rabaza O., Ramon A., Rebolo R., Redondo P., Reinhardt S., Rhode P., Rix H.-W., Rodler F., Rodriguez E., Rodriguez Trinidad A., Rohlo R.-R., Rosich A., Sadegi S., Sanchez-Blanco E., Sanchez Carrasco M.A., Sanchez-Lopez A., Sanz-Forcada J., Sarkis P., Sarmiento L.F., Schaefer S., Schiller J., Schoefer P., Schweitzer A., Solano E., Stahl O., Strachan J.B.P., Suarez J.C., Tabernero H.M., Tala M., Tulloch S.M., Veredas G., Vico Linares J.I., Vilardel F., Wagner K., Winkler J., Woltho V., Xu W., Yan F., Zapatero Osorio M.R. <Astron. Astrophys. 609, A117 (2018)> =2018A&A...609A.117T (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Radial velocities Keywords: planetary systems - stars: late-type - stars: low-mass - planets and satellites: dynamical evolution and stability Abstract: The main goal of the CARMENES survey is to find Earth-mass planets around nearby M-dwarf stars. Seven M-dwarfs included in the CARMENES sample had been observed before with HIRES and HARPS and either were reported to have one short period planetary companion (GJ 15 A, GJ 176, GJ 436, GJ 536 and GJ 1148) or are multiple planetary systems (GJ 581 and GJ 876). Aims. We aim to report new precise optical radial velocity measurements for these planet hosts and test the overall capabilities of CARMENES. We combined our CARMENES precise Doppler measurements with those available from HIRES and HARPS and derived new orbital parameters for the systems. Bona-fide single planet systems are fitted with a Keplerian model. The multiple planet systems were analyzed using a self-consistent dynamical model and their best fit orbits were tested for long-term stability. Results. We confirm or provide supportive arguments for planets around all the investigated stars except for GJ 15 A, for which we find that the post-discovery HIRES data and our CARMENES data do not show a signal at 11.4days. Although we cannot confirm the super-Earth planet GJ 15 Ab, we show evidence for a possible long-period (Pc=7025+972-629days) Saturn-mass (mcsini=51.8+5.5-5.8M) planet around GJ 15 A. In addition, based on our CARMENES and HIRES data we discover a second planet around GJ 1148, for which we estimate a period Pc=532.6+4.2-2.5days, eccentricity ec=0.342+0.050-0.062 and minimum mass mcsini=68.1+4.9-2.2M. The CARMENES optical radial velocities have similar precision and overall scatter when compared to the Doppler measurements conducted with HARPS and HIRES. We conclude that CARMENES is an instrument that is up to the challenge of discovering rocky planets around low-mass stars. Description: The two CARMENES spectrographs are grism cross-dispersed, white pupil, echelle spectrograph working in quasi-Littrow mode using a two-beam, two-slice image slicer. The visible spectrograph covers the wavelength range from 0.52um to 1.05um with 61 orders, a resolving power of R=94600, and a mean sampling of 2.8 pixels per resolution element. The data presented in this paper were taken during the early phase of operation of the CARMENES visible-light spectrograph. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 85 7 List of CARMENES known exoplanet host stars studied in this paper with their physical characteristics gj1148.dat 45 52 CARMENES Doppler measurements for GJ1148 gj15a.dat 45 92 CARMENES Doppler measurements for GJ15A gj176.dat 45 23 CARMENES Doppler measurements for GJ176 gj436.dat 45 113 CARMENES Doppler measurements for GJ436 gj536.dat 45 28 CARMENES Doppler measurements for GJ536 gj581.dat 45 20 CARMENES Doppler measurements for GJ581 gj876.dat 45 28 CARMENES Doppler measurements for GJ876
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Karmn Karmn designation (JHHMM+DDd) 12- 15 A4 --- GJ GJ name (NNNNA) 17- 21 A5 --- SpType MK spectral type (1) 23- 27 F5.3 Msun Mass Mass (2) 29- 33 F5.3 Msun e_Mass rms uncertainty on Mass 35- 40 F6.3 pc Dist Distance (1) 42- 46 F5.3 pc e_Dist rms uncertainty on Dist (1) 48- 52 F5.3 mag Ksmag Ks magnitude (1) 54- 58 F5.3 mag e_Ksmag rms uncertainty on Ksmag 60- 64 F5.1 d Prot Rotational period 66- 68 F3.1 d e_Prot rms uncertainty on Prot 70- 74 F5.3 m/s/yr SA Positive RV drift due to secular acceleration 76- 85 A10 --- FileName Name of the table with radial velocity data
Note (1): Carmencita Catalog and references therein Note (2): Combined polynomial fit to the Benedict et al. (2016, Cat. J/AJ/152/141) and Delfosse et al. (2000A&A...364..217D) relations
Byte-by-byte Description of file: gj*.dat
Bytes Format Units Label Explanations
1- 11 F11.3 d Epoch Epoch (JD) 13- 18 F6.1 m/s RV Radial velocity 20- 22 F3.1 m/s e_RV rms uncertainty on RV 24- 29 F6.4 --- Ha Hα activity index 31- 36 F6.4 --- e_Ha rms uncertainty on Ha 38- 40 I3 --- SNR Signl-to-noise ration 42- 45 I4 s ExpTime Exposure time
Acknowledgements: Trifon Trifonov, trifonov(at)
(End) Patricia Vannier [CDS] 04-Oct-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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