RETIRED A STARS AND THEIR COMPANIONS. VII. 18 NEW JOVIAN PLANETS
- Department of Astrophysics, California Institute of Technology, MC 249-17, Pasadena, CA 91125 (United States)
- Department of Astronomy, University of California, Mail Code 3411, Berkeley, CA 94720 (United States)
- Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)
- Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Blvd., Box 9501, Nashville, TN 37209 (United States)
- McDonald Observatory, University of Texas at Austin, TX 78712-0259 (United States)
We report the detection of 18 Jovian planets discovered as part of our Doppler survey of subgiant stars at Keck Observatory, with follow-up Doppler and photometric observations made at McDonald and Fairborn Observatories, respectively. The host stars have masses 0.927 {<=} M{sub *}/M{sub Sun} {<=} 1.95, radii 2.5 {<=} R{sub *}/R{sub Sun} {<=} 8.7, and metallicities -0.46 {<=} [Fe/H] {<=}+0.30. The planets have minimum masses 0.9 M{sub Jup} {<=} M{sub P} sin i {approx}< 13 M{sub Jup} and semimajor axes a {>=} 0.76 AU. These detections represent a 50% increase in the number of planets known to orbit stars more massive than 1.5 M{sub Sun} and provide valuable additional information about the properties of planets around stars more massive than the Sun.
- OSTI ID:
- 22047278
- Journal Information:
- Astrophysical Journal, Supplement Series, Journal Name: Astrophysical Journal, Supplement Series Journal Issue: 2 Vol. 197; ISSN 0067-0049; ISSN APJSA2
- Country of Publication:
- United States
- Language:
- English
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