The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.
Magnetic Activity–related Radial Velocity Variations in Cool Stars: First Results from the Lick Extrasolar Planet Survey
Open accessAbstract
The discovery of the radial velocity ( v r ) signatures of planets around several solar-like stars highlights the importance of exploring the sources of v r variations intrinsic to the stars themselves. We study the stars in the Lick planetary survey for v r variations related to stellar activity: the rotation of starspots and convective inhomogeneities and their temporal evolution. We study the relationships between the weighted v r dispersion, σ' v (which has first been corrected for the orbital contribution from known planets and the mean internal error), and spectral type, rotation, and activity (as measured by Ca II H and K). We find that the largest σ' v values occur among both the coolest (dMe) and the warmest (active F) stars. Values of σ' v increase with H and K emission and scale proportional to v sin i in G and K stars and proportional to ( v sin i ) 1.3 in F stars. For a G star with v sin i ≈ 8-10 km s −1 (age ~0.3 Gyr), for example, 20 m s −1 ≲ σ' v ≲ 45 m s −1 , roughly consistent with the predicted σ' v levels due to magnetic activity (Saar & Donahue). All the stars with proposed planetary companions show σ' v values typical for their spectral type, activity, and/or rotation. However, before the planetary v r perturbations are removed, these stars show significantly enhanced σ' v values. We develop a simple model that can predict the σ' v expected for a given star (within ≈ 40%) as a function of v sin i , spectral type, photometric variability, and macroturbulent velocity. The implications for extrasolar planet searches are discussed.
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Cites
A Jupiter-mass companion to a solar-type star
Mayor, M., & Queloz, D. (1995) · Nature · doi:10.1038/378355a0 · Cited by 4,111
Rotation, convection, and magnetic activity in lower main-sequence stars
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Attaining Doppler Precision of 3 M s-1
Butler, R. P., Marcy, G. W., Williams, E., McCarthy, C., Dosanjh, P., & Vogt, S. S. (1996) · Publications of the Astronomical Society of the Pacific · doi:10.1086/133755 · Cited by 1,160
Self-citationChromospheric variations in main-sequence stars
Baliunas, S. L., Donahue, R. A., Soon, W. H., Horne, J. H., Frazer, J., Woodard-Eklund, L., Bradford, M., Rao, L. M., Wilson, O. C., Zhang, Q., et al. (1995) · The Astrophysical Journal · doi:10.1086/175072 · Cited by 1,054
The Discovery of a Planetary Companion to 16 Cygni B
Cochran, W. D., Hatzes, A. P., Butler, R. P., & Marcy, G. W. (1997) · The Astrophysical Journal · doi:10.1086/304245 · Cited by 521
Self-citationActivity‐Related Radial Velocity Variation in Cool Stars
Saar, S. H., & Donahue, R. A. (1997) · The Astrophysical Journal · doi:10.1086/304392 · Cited by 504
Self-citationThree New “51 Pegasi–Type” Planets
Butler, R. P., Marcy, G. W., Williams, E., Hauser, H., & Shirts, P. (1997) · The Astrophysical Journal · doi:10.1086/310444 · Cited by 468
Self-citationDETECTION OF EXTRASOLAR GIANT PLANETS
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Self-citationA Planet Orbiting 47 Ursae Majoris
Butler, R. P., & Marcy, G. W. (1996) · The Astrophysical Journal · doi:10.1086/310102 · Cited by 308
Self-citationA Relationship between Mean Rotation Period in Lower Main-Sequence Stars and Its Observed Range
Donahue, R. A., Saar, S. H., & Baliunas, S. L. (1996) · The Astrophysical Journal · doi:10.1086/177517 · Cited by 306
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Cited by
A Transiting “51 Peg–like” Planet
Henry, G. W., Marcy, G. W., Butler, R. P., & Vogt, S. S. (2000) · The Astrophysical Journal · doi:10.1086/312458 · Cited by 964
Self-citationCumming, A., Butler, R. P., Marcy, G. W., Vogt, S. S., Wright, J. T., & Fischer, D. A. (2008) · Publications of the Astronomical Society of the Pacific · doi:10.1086/588487 · Cited by 892
Self-citationState of the Field: Extreme Precision Radial Velocities
Fischer, D. A., Anglada-Escude, G., Arriagada, P., Baluev, R. V., Bean, J. L., Bouchy, F., Buchhave, L. A., Carroll, T., Chakraborty, A., Crepp, J. R., et al. (2016) · Publications of the Astronomical Society of the Pacific · doi:10.1088/1538-3873/128/964/066001 · Cited by 367
Measurement of Spin‐Orbit Alignment in an Extrasolar Planetary System
Winn, J. N., Noyes, R. W., Holman, M. J., Charbonneau, D., Ohta, Y., Taruya, A., Suto, Y., Narita, N., Turner, E. L., Johnson, J. A., et al. (2005) · The Astrophysical Journal · doi:10.1086/432571 · Cited by 344
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Metadata
- Authors
- Saar, S. H., Butler, R. P., & Marcy, G. W.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1998-05-10
- Volume
- 498
- Issue
- 2
- Pages
- L153-L157
- ISSN
- 0004-637X (ISSN-L)
- OpenAlex
- W2003687834
- Cited by
- 306
- References
- 23
- FWCI
- 10.99
- Type
- journal article
- Language
- en
- Open access
- bronze
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