SIMBAD references

2011ApJ...728...32L - Astrophys. J., 728, 32 (2011/February-2)

MARVELS-1b: a short-period, brown dwarf desert candidate from the SDSS-III marvels planet search.

LEE B.L., GE J., FLEMING S.W., STASSUN K.G., GAUDI B.S., BARNES R., MAHADEVAN S., EASTMAN J.D., WRIGHT J., SIVERD R.J., GARY B., GHEZZI L., LAWS C., WISNIEWSKI J.P., PORTO DE MELLO G.F., OGANDO R.L.C., MAIA M.A.G., DA COSTA L.N., SIVARANI T., PEPPER J., NGUYEN D.C., HEBB L., DE LEE N., WANG J., WAN X., ZHAO B., CHANG L., GROOT J., VAROSI F., HEARTY F., HANNA K., VAN EYKEN J.C., KANE S.R., AGOL E., BIZYAEV D., BOCHANSKI J.J., BREWINGTON H., CHEN Z., COSTELLO E., DOU L., EISENSTEIN D.J., FLETCHER A., FORD E.B., GUO P., HOLTZMAN J.A., JIANG P., LEGER R.F., LIU J., LONG D.C., MALANUSHENKO E., MALANUSHENKO V., MALIK M., ORAVETZ D., PAN K., ROHAN P., SCHNEIDER D.P., SHELDEN A., SNEDDEN S.A., SIMMONS A., WEAVER B.A., WEINBERG D.H. and XIE J.-W.

Abstract (from CDS):

We present a new short-period brown dwarf (BD) candidate around the star TYC 1240-00945-1. This candidate was discovered in the first year of the Multi-object APO Radial Velocity Exoplanets Large-area Survey (MARVELS), which is part of the Sloan Digital Sky Survey (SDSS) III, and we designate the BD as MARVELS-1b. MARVELS uses the technique of dispersed fixed-delay interferometery to simultaneously obtain radial velocity (RV) measurements for 60 objects per field using a single, custom-built instrument that is fiber fed from the SDSS 2.5 m telescope. From our 20 RV measurements spread over a ∼370 day time baseline, we derive a Keplerian orbital fit with semi-amplitude K = 2.533±0.025 km/s, period P = 5.8953±0.0004 days, and eccentricity consistent with circular. Independent follow-up RV data confirm the orbit. Adopting a mass of 1.37±0.11 M_☉ for the slightly evolved F9 host star, we infer that the companion has a minimum mass of 28.0±1.5 M_Jup, a semimajor axis 0.071±0.002 AU assuming an edge-on orbit, and is probably tidally synchronized. We find no evidence for coherent intrinsic variability of the host star at the period of the companion at levels greater than a few millimagnitudes. The companion has an a priori transit probability of ∼14%. Although we find no evidence for transits, we cannot definitively rule them out for companion radii ≲ 1 R_Jup.

Abstract Copyright: ∼

Journal keyword(s): brown dwarfs - stars: low-mass - techniques: radial velocities

Nomenclature: MARVELS-1b N=1.

Simbad objects: 8

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