Publications in VIVO

Co-author Network

Pineda, John Sebastian

Research Associate

Positions

Research Associate, Laboratory for Atmospheric and Space Physics (LASP)

Publications

selected publications

journal article
- High-energy spectra of LTT 1445A and GJ 486 reveal flares and activity. Astronomy and Astrophysics: a European journal. A48-A48. 2024
- Transitions in magnetic behavior at the substellar boundary. Astronomy and Astrophysics: a European journal. A95-A95. 2024
- Impact of Electron Precipitation on Brown Dwarf Atmospheres and the Missing Auroral H₃⁺ Emission. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2024
- Binarity enhances the occurrence rate of radiation belt emissions in ultracool dwarfs. Monthly Notices of the Royal Astronomical Society. 2024
- The High-energy Spectrum of the Young Planet Host V1298 Tau. The Astronomical Journal. 2023
- Plausible association of distant late M dwarfs with low-frequency radio emission. Astronomy and Astrophysics: a European journal. 2023
- UV Spectral Characterization of Low-mass Stars with AstroSat UVIT for Exoplanet Applications: The Case Study of HIP 23309. The Astronomical Journal. 2023
- Measurement of stellar and substellar winds using white dwarf hosts. Monthly Notices of the Royal Astronomical Society. 5096-5108. 2023
- The winds of young Solar-type stars in the Pleiades, AB Doradus, Columba, and β Pictoris. Monthly Notices of the Royal Astronomical Society. 2042-2063. 2023
- The MUSCLES Extension for Atmospheric Transmission Spectroscopy: UV and X-Ray Host-star Observations for JWST ERS & GTO Targets. The Astronomical Journal. 2023
- Coherent radio bursts from known M-dwarf planet-host YZ Ceti. Nature Astronomy. 569-578. 2023
- Coronal X-Ray Emission from Nearby, Low-mass, Exoplanet Host Stars Observed by the MUSCLES and Mega-MUSCLES HST Treasury Survey Projects. The Astronomical Journal. 2023
- FUMES. III. Ultraviolet and Optical Variability of M-dwarf Chromospheres. The Astronomical Journal. 2023
- A Pilot Survey of an M Dwarf Flare Star with Swift’s UV Grism. 201-201. 2022
- Radio Emission from Binary Ultracool Dwarf Systems. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2022
- Intrinsic Lyα Profiles of High-velocity G, K, and M Dwarfs. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2022
- Giant white-light flares on fully convective stars occur at high latitudes. Monthly Notices of the Royal Astronomical Society. 1723-1745. 2021
- The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2021
- Reconstructing the Extreme Ultraviolet Emission of Cool Dwarfs Using Differential Emission Measure Polynomials. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2021
- FUMES. II. Lyα Reconstructions of Young, Active M Dwarfs. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2021
- The Far Ultraviolet M-dwarf Evolution Survey. I. The Rotational Evolution of High-energy Emissions*. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2021
- The Mega-MUSCLES Spectral Energy Distribution of TRAPPIST-1. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2021
- Estimating the Ultraviolet Emission of M Dwarfs with Exoplanets from Ca ii and Hα. The Astronomical Journal. 2020
- On the Correlation between L Dwarf Optical and Infrared Variability and Radio Aurorae. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2020
- The High-energy Radiation Environment around a 10 Gyr M Dwarf: Habitable at Last?. The Astronomical Journal. 2020
- The Relative Emission from Chromospheres and Coronae: Dependence on Spectral Type and Age. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2020
- Deconfusing the Confusogram: Getting New Insights from Zeeman Doppler Imaging. 81-81. 2020
- Stellar radio aurorae signal planetary systems. Nature Astronomy. 562-563. 2020
- 3.8 μm Imaging of 400-600 K Brown Dwarfs and Orbital Constraints for WISEP J045853.90+643452.6AB. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2019
- Constraints on magnetospheric radio emission from Y dwarfs. Monthly Notices of the Royal Astronomical Society. 1994-2004. 2019
- A Hot Ultraviolet Flare on the M Dwarf Star GJ 674. Letters of the Astrophysical Journal. 2019
- A Deep Radio Limit for the TRAPPIST-1 System. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2018
- The Strongest Magnetic Fields on the Coolest Brown Dwarfs. Astrophysical Journal Supplement Series. 2018
- A Panchromatic View of Brown Dwarf Aurorae. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2017
- A SURVEY FOR Hα EMISSION FROM LATE L DWARFS AND T DWARFS. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2016
- TWO STARS TWO WAYS: CONFIRMING A MICROLENSING BINARY LENS SOLUTION WITH A SPECTROSCOPIC MEASUREMENT OF THE ORBIT. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2016
- AURORAL RADIO EMISSION FROM LATE L AND T DWARFS: A NEW CONSTRAINT ON DYNAMO THEORY IN THE SUBSTELLAR REGIME. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2016
- AN ACTIVITY-ROTATION RELATIONSHIP AND KINEMATIC ANALYSIS OF NEARBY MID-TO-LATE-TYPE M DWARFS. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2015
- Magnetospherically driven optical and radio aurorae at the end of the stellar main sequence. Nature. 568-+. 2015
- THE SLOAN DIGITAL SKY SURVEY DATA RELEASE 7 SPECTROSCOPIC M DWARF CATALOG. III. THE SPATIAL DEPENDENCE OF MAGNETIC ACTIVITY IN THE GALAXY. The Astronomical Journal. 2013
- CHARACTERIZING THE COOL KOIs. V. KOI-256: A MUTUALLY ECLIPSING POST-COMMON ENVELOPE BINARY. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2013
- USING HIGH-RESOLUTION OPTICAL SPECTRA TO MEASURE INTRINSIC PROPERTIES OF LOW-MASS STARS: NEW PROPERTIES FOR KOI-314 AND GJ 3470. The Astrophysical Journal: an international review of astronomy and astronomical physics. 2013
- The kinematics of very low mass dwarfs: Splinter session summary. Astronomische Nachrichten. 93-96. 2013
- THE SLOAN DIGITAL SKY SURVEY DATA RELEASE 7 SPECTROSCOPIC M DWARF CATALOG. I. DATA. The Astronomical Journal. 2011
- COLORS AND KINEMATICS OF L DWARFS FROM THE SLOAN DIGITAL SKY SURVEY. The Astronomical Journal. 1808-1821. 2010

Teaching

courses taught

ASTR 3520 - Observations and Instrumentation 2
Primary Instructor - Spring 2022
Lab course in observation and instrumentation. Hands-on exercises include obtaining and analyzing multi-wavelength data, optical design and instrumentation, and statistical analysis, with emphasis on spectroscopy. A significant number of night time observation sessions are required. Elective for APS majors. Elective for APS minors on space available basis.
ASTR 5835 - Seminar in Planetary Science
Primary Instructor - Spring 2019
Studies current research on a topic in planetary science. Students and faculty give presentations. Subjects may vary each semester. May be repeated up to 4 total credit hours to meet candidacy requirements. Department enforced prerequisite: senior level undergraduate physics. Same as ATOC 5835 and GEOL 5835.
ASTR 6000 - Seminar in Astrophysics
Primary Instructor - Fall 2018 / Fall 2021
Studies current research and research literature on an astrophysical topic. Students and faculty give presentations. Subjects vary each semester. May be repeated for a total of 4 credit hours to meet candidacy requirements.
GEOL 5835 - Seminar in Planetary Science
Primary Instructor - Spring 2019
Studies current research on a topic in planetary science. Students and faculty give presentations. Subjects may vary each semester. May be repeated up to 4 total credit hours to meet candidacy requirements. Department enforced prerequisite: senior level undergraduate physics. Same as ATOC 5835 and ASTR 5835.