Steven H. Saar - Publications, H-index & Citations

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Steven H. Saar

Harvard University and Smithsonian Institution

45H-index

308Paper Count

8.5KCitation Count

Published Papers 65

Publication Date

Antisolar Differential Rotation May Have Revived Magnetic Braking in the Subgiant 31 Aquilae

The Astronomical Journal

IF0

2026-04-14

OAAI

Travis S. Metcalfe; Jennifer L. van Saders; Thomas R. Ayres; Derek Buzasi; Jeremy J. Drake; Ricky Egeland; Rafael A. García; Oleg Kochukhov; Steven H. Saar; Keivan G. Stassun; Sarbani Basu; J. M. Joel Ong; Amalie Stokholm; Timothy R. Bedding; Sylvain N. Breton; Ilya V. Ilyin; Pascal Petit; Marc H. Pinsonneault; Klaus G. Strassmeier

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The He I D3 Line as a Proxy for Magnetic Activity Using EXPRES Solar Observations

The Astrophysical Journal

IF0

2025-11-19

OAAI

Momo Ellwarth; Joe Llama; Lily L. Zhao; John M. Brewer; Andrew Szymkowiak; Rachael M. Roettenbacher; James T. Sikora; Alex S. Polanski; Steven H. Saar

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X-Ray, UV, and Optical Observations of Proxima Centauri's Stellar Cycle

ASTROPHYSICAL JOURNAL

IF5.4

2024-12-10

OAAI

Wargelin, Bradford J.; Saar, Steven H.; Irving, Zackery A.; Slavin, Jonathan D.; Ratzlaff, Peter; do Nascimento Jr, Jose-Dias

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Characterizing Solar Center-to-limb Radial-velocity Variability with SDO

ASTROPHYSICAL JOURNAL

IF5.4

2024-09-11

OAAI

Palumbo III, Michael L.; Saar, Steven H.; Haywood, Raphaelle D.

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The mean longitudinal magnetic field and its uses in radial-velocity surveys

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

IF4.8

2024-07-10

OAAI

Rescigno, F.; Mortier, A.; Dumusque, X.; Lakeland, B. S.; Haywood, R.; Piskunov, N.; Nicholson, B. A.; Lopez-Morales, M.; Dalal, S.; Cretignier, M.; Klein, B.; Cameron, A. Collier; Ghedina, A.; Gonzalez, M.; Cosentino, R.; Sozzetti, A.; Saar, S. H.

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A Hale-like Cycle in the Solar Twin 18 Scorpii

ASTROPHYSICAL JOURNAL

IF5.4

2023-11-13

OAAI

do Nascimento Jr, J. -d.; Barnes, S. A.; Saar, S. H.; de Mello, G. F. Porto; Hall, J. C.; Anthony, F.; de Almeida, L.; Velloso, E. N.; da Costa, J. S.; Petit, P.; Strugarek, A.; Wargelin, B. J.; Castro, M.; Strassmeier, K. G.; Brun, A. S.

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Asteroseismology and Spectropolarimetry of the Exoplanet Host Star λ Serpentis

ASTRONOMICAL JOURNAL

IF5.1

2023-09-21

OAAI

Metcalfe, Travis S.; Buzasi, Derek; Huber, Daniel; Pinsonneault, Marc H.; van Saders, Jennifer L.; Ayres, Thomas R.; Basu, Sarbani; Drake, Jeremy J.; Egeland, Ricky; Kochukhov, Oleg; Petit, Pascal; Saar, Steven H.; See, Victor; Stassun, Keivan G.; Li, Yaguang; Bedding, Timothy R.; Breton, Sylvain N.; Finley, Adam J.; Garcia, Rafael A.; Kjeldsen, Hans; Nielsen, Martin B.; Ong, J. M. Joel; Rorsted, Jakob L.; Stokholm, Amalie; Winther, Mark L.; Clark, Catherine A.; Godoy-Rivera, Diego; Ilyin, Ilya V.; Strassmeier, Klaus G.; Jeffers, Sandra V.; Marsden, Stephen C.; Vidotto, Aline A.; Baliunas, Sallie; Soon, Willie

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X-Ray Activity Variations and Coronal Abundances of the Star-Planet Interaction Candidate HD 179949

ASTROPHYSICAL JOURNAL

IF5.4

2023-07-12

OAAI

Acharya, Anshuman; Kashyap, Vinay L.; Saar, Steven H.; Singh, Kulinder Pal; Cuntz, Manfred

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Stellar Cycles in Fully Convective Stars and a New Interpretation of Dynamo Evolution

ASTROPHYSICAL JOURNAL

IF5.4

2023-06-05

OAAI

Irving, Zackery A.; Saar, Steven H.; Wargelin, Bradford J.; do Nascimento Jr, Jose-Dias

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Multicomponent Activity Cycles Using Hilbert-Huang Analysis

ASTROPHYSICAL JOURNAL LETTERS

IF11.7

2023-03-03

OAAI

Velloso, E. N.; Anthony, F.; Do Nascimento, J. -d.; Silveira, L. F. Q.; Hall, J.; Saar, S. H.

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HD 166620: Portrait of a Star Entering a Grand Magnetic Minimum

ASTROPHYSICAL JOURNAL LETTERS

IF11.7

2022-09-09

OAAI

Luhn, Jacob K.; Wright, Jason T.; Henry, Gregory W.; Saar, Steven H.; Baum, Anna C.

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Unsigned Magnetic Flux as a Proxy for Radial-velocity Variations in Sun-like Stars

ASTROPHYSICAL JOURNAL

IF5.4

2022-08-08

OAAI

Haywood, R. D.; Milbourne, T. W.; Saar, S. H.; Mortier, A.; Phillips, D.; Charbonneau, D.; Cameron, A. Collier; Cegla, H. M.; Meunier, N.; Palumbo, M. L., III

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K2-79b and K2-222b: Mass Measurements of Two Small Exoplanets with Periods beyond 10 days that Overlap with Periodic Magnetic Activity Signals

ASTRONOMICAL JOURNAL

IF5.1

2022-01-04

OAAI

Nava, Chantanelle; Lopez-Morales, Mercedes; Mortier, Annelies; Zeng, Li; Giles, Helen A. C.; Bieryla, Allyson; Vanderburg, Andrew; Buchhave, Lars A.; Poretti, Ennio; Saar, Steven H.; Dumusque, Xavier; Latham, David W.; Charbonneau, David; Damasso, Mario; Bonomo, Aldo S.; Lovis, Christophe; Cameron, Andrew Collier; Eastman, Jason D.; Sozzetti, Alessandro; Cosentino, Rosario; Pedani, Marco; Pepe, Francesco; Molinari, Emilio; Sasselov, Dimitar; Mayor, Michel; Stalport, Manu; Malavolta, Luca; Rice, Ken; Watson, Christopher A.; Martinez Fiorenzano, A. F.; Di Fabrizio, Luca

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Magnetic and Rotational Evolution of ρ CrB from Asteroseismology with TESS

ASTROPHYSICAL JOURNAL

IF5.4

2021-11-08

OAAI

Metcalfe, Travis S.; van Saders, Jennifer L.; Basu, Sarbani; Buzasi, Derek; Drake, Jeremy J.; Egeland, Ricky; Huber, Daniel; Saar, Steven H.; Stassun, Keivan G.; Ball, Warrick H.; Campante, Tiago L.; Finley, Adam J.; Kochukhov, Oleg; Mathur, Savita; Reinhold, Timo; See, Victor; Baliunas, Sallie; Soon, Willie

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Estimating Magnetic Filling Factors from Simultaneous Spectroscopy and Photometry: Disentangling Spots, Plage, and Network

ASTROPHYSICAL JOURNAL

IF5.4

2021-10-08

OAAI

Milbourne, T. W.; Phillips, D. F.; Langellier, N.; Mortier, A.; Haywood, R. D.; Saar, S. H.; Cegla, H. M.; Cameron, A. Collier; Dumusque, X.; Latham, D. W.; Malavolta, L.; Maldonado, J.; Thompson, S.; Vanderburg, A.; Watson, C. A.; Buchhave, L. A.; Cecconi, M.; Cosentino, R.; Ghedina, A.; Gonzalez, M.; Lodi, M.; Lopez-Morales, M.; Sozzetti, A.; Walsworth, R. L.

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Detection Limits of Low-mass, Long-period Exoplanets Using Gaussian Processes Applied to HARPS-N Solar Radial Velocities

ASTRONOMICAL JOURNAL

IF5.1

2021-05-28

OAAI

Langellier, N.; Milbourne, T. W.; Phillips, D. F.; Haywood, R. D.; Saar, S. H.; Mortier, A.; Malavolta, L.; Thompson, S.; Cameron, A. Collier; Dumusque, X.; Cegla, H. M.; Latham, D. W.; Maldonado, J.; Watson, C. A.; Buchschacher, N.; Cecconi, M.; Charbonneau, D.; Cosentino, R.; Ghedina, A.; Gonzalez, M.; Li, C-H.; Lodi, M.; Lopez-Morales, M.; Micela, G.; Molinari, E.; Pepe, F.; Poretti, E.; Rice, K.; Sasselov, D.; Sozzetti, A.; Udry, S.; Walsworth, R. L.

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Long-term stellar activity variations and their effect on radial-velocity measurements

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

IF4.8

2021-04-26

OAAI

Costes, Jean C.; Watson, Christopher A.; de Mooij, Ernst; Saar, Steven H.; Dumusque, Xavier; Cameron, Collier; Phillips, David F.; Gunther, Maximilian N.; Jenkins, James S.; Mortier, Annelies; Thompson, Andrew P. G.

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When Do Stalled Stars Resume Spinning Down? Advancing Gyrochronology with Ruprecht 147

ASTROPHYSICAL JOURNAL

IF5.4

2020-11-27

122

OAAI

Curtis, Jason Lee; Agueros, Marcel A.; Matt, Sean P.; Covey, Kevin R.; Douglas, Stephanie T.; Angus, Ruth; Saar, Steven H.; Cody, Ann Marie; Vanderburg, Andrew; Law, Nicholas M.; Kraus, Adam L.; Latham, David W.; Baranec, Christoph; Riddle, Reed; Ziegler, Carl; Lund, Mikkel N.; Torres, Guillermo; Meibom, Soren; Aguirre, Victor Silva; Wright, Jason T.

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A Study of Equatorial Coronal Holes during the Maximum Phase of Four Solar Cycles

ASTROPHYSICAL JOURNAL

IF5.4

2020-09-29

OAAI

Karna, Mahendra Lal; Karna, Nishu; Saar, Steven H.; Pesnell, W. Dean; DeLuca, Edward E.

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Long-term Periodicities in Kepler Photometry of Open Cluster NGC 6811

ASTROPHYSICAL JOURNAL

IF5.4

2020-09-14

OAAI

Velloso, E. N.; Nascimento Jr., J. -D. do; Saar, S. H.

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Research Directions