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Employment (1)

University of Delaware: Newark, DE, US

1985-09-01 to present | Professor (Physics & Astronomy)
Employment
Source: Self-asserted source
James MacDonald

Education and qualifications (1)

University of Cambridge: Cambridge, Cambridgeshire, GB

1979 | Ph.D. (Institute of Astronomy)
Education
Source: Self-asserted source
James MacDonald

Works (50 of 155)

Items per page:
Page 1 of 4

LP349-25AB: Application of Magneto-convection Model to an M Dwarf Binary Where Radio and Astrometric Data have Yielded Masses with 0.7% Precision

Research Notes of the AAS
2024-09-23 | Journal article
Contributors: J. MacDonald; D. J. Mullan
Source: check_circle
Crossref

Using ZDI maps to determine magnetic forces and torques at the photospheres of early-type stars

Monthly Notices of the Royal Astronomical Society
2024-04-25 | Journal article
Contributors: James MacDonald; Tali Natan; Véronique Petit; Oleg Kochukhov; Matthew E Shultz
Source: check_circle
Crossref

On the Possibility of an Upper Limit on Magnetically Induced Radius Inflation in Low-mass Stars

The Astrophysical Journal
2024-03-01 | Journal article
Contributors: J. MacDonald; D. J. Mullan
Source: check_circle
Crossref

Evolution of low mass population III stars from the pre-main sequence to the white dwarf cooling track

Monthly Notices of the Royal Astronomical Society
2023-09-01 | Journal article
Contributors: T M Lawlor; J MacDonald
Source: check_circle
Crossref

Magneto-convective Modeling of Low-mass Pre-main Sequence Stars: Postponing the Depletion of Lithium

Research Notes of the AAS
2023-03-21 | Journal article
Contributors: D. J. Mullan; J. MacDonald
Source: check_circle
Crossref

EPIC 219511354, A Binary Pair of Active K-stars: Modeling Activity-induced Radius Inflation by Magneto-convection

Research Notes of the AAS
2022-09-28 | Journal article
Contributors: D. J. Mullan; J. MacDonald
Source: check_circle
Crossref

Magnetic Fields in Low-mass Stars Increase Photometric Masses, Thereby Reducing Inferred Radius Inflation

Research Notes of the AAS
2022-07-19 | Journal article
Contributors: J. MacDonald; D. J. Mullan
Source: check_circle
Crossref

Radiation for laser-driven rescattering near the ultimate high-energy cutoff: The single-atom response and bremsstrahlung limit

Physical Review A
2021-02-22 | Journal article
Contributors: Evan Jones; Zach Germain; Jakob Niessner; David Milliken; Joey Scilla; Liam Kelley; James MacDonald; Barry C. Walker
Source: check_circle
Crossref

THOR 42: A Test of Magnetic Models for Pre-main-sequence Stars

The Astrophysical Journal
2021-01-01 | Journal article
Contributors: J. MacDonald; D. J. Mullan
Source: check_circle
Crossref

Pre-main-sequence Stars in Taurus: Comparison of Magnetic and Nonmagnetic Model Fits to the Low-mass Stars

The Astrophysical Journal
2020-12-01 | Journal article
Contributors: D. J. Mullan; J. MacDonald
Source: check_circle
Crossref

Mass Loss on the Red Giant Branch: Plasmoid-driven Winds above the RGB Bump

The Astrophysical Journal
2019-11-10 | Journal article
Contributors: D. J. Mullan; J. MacDonald
Source: check_circle
Crossref

Magnetic inhibition of convection in O-star envelopes

Monthly Notices of the Royal Astronomical Society
2019-08-11 | Journal article
Contributors: James MacDonald; Véronique Petit
Source: check_circle
Crossref

The Umbral-penumbral Boundary in Sunspots in the Context of Magnetoconvection

The Astrophysical Journal Letters
2019-03-10 | Journal article
Contributors: D. J. Mullan; J. MacDonald
Source: check_circle
Crossref

Magnetic Fields on the Flare Star Trappist-1: Consequences for Radius Inflation and Planetary Habitability

The Astrophysical Journal
2018-12-20 | Journal article
Contributors: D. J. Mullan; J. MacDonald; S. Dieterich; H. Fausey
Source: check_circle
Crossref

An explanation for the gap in the Gaia HRD for M dwarfs

Monthly Notices of the Royal Astronomical Society
2018-10-11 | Journal article
Contributors: James MacDonald; John Gizis
Source: check_circle
Crossref

The Magnetic Binary GJ 65: A Test of Magnetic Diffusivity Effects

The Astrophysical Journal
2018-06-10 | Journal article
Contributors: James MacDonald; D. J. Mullan; Sergio Dieterich
Source: check_circle
Crossref

Magnetic Modeling of Inflated Low-mass Stars Using Interior Fields No Larger than ∼10 kG

The Astrophysical Journal
2017-11-20 | Journal article
Contributors: James MacDonald; D. J. Mullan
Source: check_circle
Crossref

LSPM J1314+1320: An Oversized Magnetic Star with Constraints on the Radio Emission Mechanism

The Astrophysical Journal
2017-07-10 | Journal article
Contributors: James MacDonald; D. J. Mullan
Source: check_circle
Crossref

THE AGE OF THE KIC 7177553 SYSTEM

The Astrophysical Journal
2017-01-10 | Journal article
Contributors: James MacDonald; D. J. Mullan
Source: check_circle
Crossref

APPARENT NON-COEVALITY AMONG THE STARS IN UPPER SCORPIO: RESOLVING THE PROBLEM USING A MODEL OF MAGNETIC INHIBITION OF CONVECTION

The Astrophysical Journal
2017-01-01 | Journal article
Contributors: James MacDonald; D. J. Mullan
Source: check_circle
Crossref

Mechanical Energy Fluxes Associated with Saturated Coronal Heating in M Dwarfs: Comparison with Predictions of a Turbulent Dynamo

2016-02 | Journal article
OTHER-ID:

11373330

Contributors: Mullan, D. J.; MacDonald, J.
Source: check_circle
NASA Astrophysics Data System
grade
Preferred source (of 2)‎

A MODEL FOR INTERFACE DYNAMOS IN LATE K AND EARLY M DWARFS

The Astrophysical Journal
2015-09-02 | Journal article
Contributors: D. J. Mullan; E. R. Houdebine; J. MacDonald
Source: check_circle
Crossref

On the importance of convection criterion in population III stellar evolution models

2015-08 | Journal article
OTHER-ID:

11055807

Contributors: Lawlor, Timothy M.; MacDonald, James; Young, Timothy R.; Teffs, Jacob
Source: check_circle
NASA Astrophysics Data System

The effects of convection criteria on the evolution of Population III stars and the detectability of their supernovae

2015-06 | Journal article
OTHER-ID:

10841299

Contributors: Lawlor, T. M.; Young, T. R.; Teffs, J.; MacDonald, J.
Source: check_circle
NASA Astrophysics Data System

Magnetoconvective models of red dwarfs: constraints imposed by the lithium abundance

2015-04 | Journal article
OTHER-ID:

10729462

Contributors: MacDonald, J.; Mullan, D. J.
Source: check_circle
NASA Astrophysics Data System

M dwarf search for pulsations within Kepler Guest Observer programme

2015-01 | Journal article
OTHER-ID:

10609081

Contributors: Rodríguez-López, C.; Gizis, J. E.; MacDonald, J.; Amado, P. J.; Carosso, A.
Source: check_circle
NASA Astrophysics Data System

M Dwarfs Search for Pulsations and Flare Studies Within Kepler GO Program

2015-01 | Journal article
OTHER-ID:

10863198

Contributors: Rodriguez-Lopez, C.; Gizis, J. E.; MacDonald, J.; Amado, P. J.
Source: check_circle
NASA Astrophysics Data System

Surface Magnetic Field Strengths: New Tests of Magnetoconvective Models of M Dwarfs

2014-05 | Journal article
OTHER-ID:

2048653

Contributors: MacDonald, James; Mullan, D. J.
Source: check_circle
NASA Astrophysics Data System

The theoretical instability strip of M dwarf stars

2014-03 | Journal article
OTHER-ID:

2073351

Contributors: Rodríguez-López, C.; MacDonald, J.; Amado, P. J.; Moya, A.; Mullan, D.
Source: check_circle
NASA Astrophysics Data System

Population III Stars: Evolution and Explosions

2014-01 | Journal article
OTHER-ID:

2042789

Contributors: Lawlor, Timothy M.; MacDonald, J.; Young, T.
Source: check_circle
NASA Astrophysics Data System

The empirical white dwarf cooling sequence

2013 | Journal article
OTHER-ID:

2025237

Contributors: Richer, H.; Goldsbury, R.; Heyl, J.; Bergeron, P.; Dotter, A.; Kalirai, J. S.; MacDonald, J.; Rich, R. M.; Stetson, P. B.; Tremblay, P. -E. et al.
Source: check_circle
NASA Astrophysics Data System

Lithium abundance and surface magnetic fields: new constraints in magnetic models of M dwarfs

2013-11 | Journal article
OTHER-ID:

10527776

Contributors: MacDonald, James; Mullan, Dermott
Source: check_circle
NASA Astrophysics Data System

The extremely low-metallicity star SDSS J102915+172927: a subgiant scenario

2013-05 | Journal article
OTHER-ID:

2026674

Contributors: MacDonald, J.; Lawlor, T. M.; Anilmis, N.; Rufo, N. F.
Source: check_circle
NASA Astrophysics Data System

Magnetic Effects and Oversized M Dwarfs in the Young Open Cluster NGC 2516

2013-03 | Journal article
OTHER-ID:

1999141

Contributors: MacDonald, James; Mullan, Dermott J.
Source: check_circle
NASA Astrophysics Data System

An Empirical Measure of the Rate of White Dwarf Cooling in 47 Tucanae

2012-11 | Journal article
OTHER-ID:

1940184

Contributors: Goldsbury, R.; Heyl, J.; Richer, H. B.; Bergeron, P.; Dotter, A.; Kalirai, J. S.; MacDonald, J.; Rich, R. M.; Stetson, P. B.; Tremblay, P. -E. et al.
Source: check_circle
NASA Astrophysics Data System

Solar Cycle Variation of Sound Speed inside the Sun

2012-08 | Journal article
OTHER-ID:

1939036

Contributors: Mullan, D. J.; MacDonald, J.; Rabello-Soares, M. C.
Source: check_circle
NASA Astrophysics Data System

Precision modelling of M dwarf stars: the magnetic components of CM Draconis

2012-04 | Journal article
OTHER-ID:

1969792

Contributors: MacDonald, J.; Mullan, D. J.
Source: check_circle
NASA Astrophysics Data System

Pulsations in M dwarf stars

2012-01 | Journal article
OTHER-ID:

1969281

Contributors: Rodríguez-López, C.; MacDonald, J.; Moya, A.
Source: check_circle
NASA Astrophysics Data System

Modeling Low-mass Stars in the Presence of Magnetic Fields

2011-12 | Journal article
OTHER-ID:

1882551

Contributors: Mullan, D. J.; MacDonald, J.
Source: check_circle
NASA Astrophysics Data System

Magneto-convection and Lithium Age Estimates of the β Pictoris Moving Group

2010-11 | Journal article
OTHER-ID:

1816018

Contributors: Macdonald, J.; Mullan, D. J.
Source: check_circle
NASA Astrophysics Data System

Mode trapping in sdO models

2010-10 | Journal article
BIBCODE:

2010Ap&SS.329..205R

OTHER-ID:

1813033

Contributors: Rodríguez-López, C.; Moya, A.; Garrido, R.; MacDonald, J.; Oreiro, R.; Ulla, A.
Source: check_circle
NASA Astrophysics Data System

Magnetic Models of the Brown Dwarfs HD 130948b and HD 130948c

2010-04 | Journal article
OTHER-ID:

1814085

Contributors: Mullan, D. J.; MacDonald, J.
Source: check_circle
NASA Astrophysics Data System

Study of sdO models: mode trapping

2010-04 | Journal article
OTHER-ID:

1847477

Contributors: Rodríguez-López, C.; Moya, A.; Garrido, R.; MacDonald, J.; Oreiro, R.; Ulla, A.
Source: check_circle
NASA Astrophysics Data System

Study of sdO models: pulsation analysis

2010-02 | Journal article
OTHER-ID:

1847056

Contributors: Rodríguez-López, C.; Moya, A.; Garrido, R.; MacDonald, J.; Oreiro, R.; Ulla, A.
Source: check_circle
NASA Astrophysics Data System

Evolution of Mid-Mass Population III Stars

2010-01 | Journal article
OTHER-ID:

1804811

Contributors: Lawlor, Timothy M.; Young, T. R.; MacDonald, J.; Johnson, T. A.
Source: check_circle
NASA Astrophysics Data System

The rapidly pulsating sdO star, SDSS J160043.6+074802.9

2010-01 | Journal article
OTHER-ID:

1846783

Contributors: Rodríguez-López, C.; Lynas-Gray, A. E.; Kilkenny, D.; MacDonald, J.; Moya, A.; Koen, C.; Woudt, P. A.; Wium, D. J.; Oruru, B.; Zietsman, E.
Source: check_circle
NASA Astrophysics Data System

Big bang nucleosynthesis: The strong nuclear force meets the weak anthropic principle

2009-08 | Journal article
OTHER-ID:

1796036

Contributors: MacDonald, J.; Mullan, D. J.
Source: check_circle
NASA Astrophysics Data System

Structural Effects of Magnetic Fields in Brown Dwarfs

2009-07 | Journal article
OTHER-ID:

1754057

Contributors: MacDonald, J.; Mullan, D. J.
Source: check_circle
NASA Astrophysics Data System

Mid-mass Population III Stars: Evolution, Structure, Composition And Mass Loss.

2009-01 | Journal article
OTHER-ID:

1743889

Contributors: Lawlor, Timothy M.; MacDonald, J.
Source: check_circle
NASA Astrophysics Data System

The pulsating hot subdwarf Balloon 090100001: results of the 2005 multisite campaign

2009-01 | Journal article
OTHER-ID:

1782630

Contributors: Baran, A.; Oreiro, R.; Pigulski, A.; Pérez Hernández, F.; Ulla, A.; Reed, M. D.; Rodríguez-López, C.; Moskalik, P.; Kim, S. -L.; Chen, W. -P. et al.
Source: check_circle
NASA Astrophysics Data System
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