Search Results - "Pineda, J Sebastian"

FUMES. II. Lyα Reconstructions of Young, Active M Dwarfs by Youngblood, Allison, Pineda, J. Sebastian, France, Kevin

“…Abstract The H i Ly α (1215.67 Å) emission line dominates the far-UV spectra of M dwarf stars, but strong absorption from neutral hydrogen in the interstellar…”
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The Relative Emission from Chromospheres and Coronae: Dependence on Spectral Type and Age by Linsky, Jeffrey L., Wood, Brian E., Youngblood, Allison, Brown, Alexander, Froning, Cynthia S., France, Kevin, Buccino, Andrea P., Cranmer, Steven R., Mauas, Pablo, Miguel, Yamila, Pineda, J. Sebastian, Rugheimer, Sarah, Vieytes, Mariela, Wheatley, Peter J., Wilson, David J.

“…Abstract Extreme-ultraviolet and X-ray emission from stellar coronae drives mass loss from exoplanet atmospheres, and ultraviolet emission from stellar…”
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UV Spectral Characterization of Low-mass Stars with AstroSat UVIT for Exoplanet Applications: The Case Study of HIP 23309 by Ranjan, Sukrit, Nayak, Prasanta K., Pineda, J. Sebastian, Narang, Mayank

“…Abstract Characterizing rocky exoplanet atmospheres is a key goal of exoplanet science, but interpreting such observations will require understanding the…”
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On the Correlation between L Dwarf Optical and Infrared Variability and Radio Aurorae by Richey-Yowell, Tyler, Kao, Melodie M., Pineda, J. Sebastian, Shkolnik, Evgenya L., Hallinan, Gregg

“…Photometric variability attributed to cloud phenomena is common in L/T transition brown dwarfs. Recent studies show that such variability may also trace…”
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FUMES. III. Ultraviolet and Optical Variability of M-dwarf Chromospheres by Duvvuri, Girish M., Pineda, J. Sebastian, Berta-Thompson, Zachory K., France, Kevin, Youngblood, Allison

“…Abstract We obtained ultraviolet and optical spectra for nine M dwarfs across a range of rotation periods to determine whether they showed stochastic intrinsic…”
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The Mega-MUSCLES Spectral Energy Distribution of TRAPPIST-1 by Wilson, David J., Froning, Cynthia S., Duvvuri, Girish M., France, Kevin, Youngblood, Allison, Schneider, P. Christian, Berta-Thompson, Zachory, Brown, Alexander, Buccino, Andrea P., Hawley, Suzanne, Irwin, Jonathan, Kaltenegger, Lisa, Kowalski, Adam, Linsky, Jeffrey, Parke Loyd, R. O., Miguel, Yamila, Pineda, J. Sebastian, Redfield, Seth, Roberge, Aki, Rugheimer, Sarah, Tian, Feng, Vieytes, Mariela

“…Abstract We present a 5 Å–100 μ m spectral energy distribution (SED) of the ultracool dwarf star TRAPPIST-1, obtained as part of the Mega-MUSCLES Treasury…”
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The MUSCLES Extension for Atmospheric Transmission Spectroscopy: UV and X-Ray Host-star Observations for JWST ERS & GTO Targets by Behr, Patrick R., France, Kevin, Brown, Alexander, Duvvuri, Girish, Bean, Jacob L., Berta-Thompson, Zachory, Froning, Cynthia, Miguel, Yamila, Pineda, J. Sebastian, Wilson, David J., Youngblood, Allison

“…Abstract X-ray through infrared spectral energy distributions (SEDs) are essential for understanding a star’s effect on exoplanet atmospheric composition and…”
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The High-energy Spectrum of the Young Planet Host V1298 Tau by Duvvuri, Girish M., Cauley, P. Wilson, Aguirre, Fernando Cruz, Kilgard, Roy, France, Kevin, Berta-Thompson, Zachory K., Pineda, J. Sebastian

“…Abstract V1298 Tau is a young pre-main-sequence star hosting four known exoplanets that are prime targets for transmission spectroscopy with current-generation…”
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Reconstructing the Extreme Ultraviolet Emission of Cool Dwarfs Using Differential Emission Measure Polynomials by Duvvuri, Girish M., Sebastian Pineda, J., Berta-Thompson, Zachory K., Brown, Alexander, France, Kevin, Kowalski, Adam F., Redfield, Seth, Tilipman, Dennis, Vieytes, Mariela C., Wilson, David J., Youngblood, Allison, Froning, Cynthia S., Linsky, Jeffrey, Parke Loyd, R. O., Mauas, Pablo, Miguel, Yamila, Newton, Elisabeth R., Rugheimer, Sarah, Christian Schneider, P.

“…Abstract Characterizing the atmospheres of planets orbiting M dwarfs requires understanding the spectral energy distributions of M dwarfs over planetary…”
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Coronal X-Ray Emission from Nearby, Low-mass, Exoplanet Host Stars Observed by the MUSCLES and Mega-MUSCLES HST Treasury Survey Projects by Brown, Alexander, Schneider, P. Christian, France, Kevin, Froning, Cynthia S., Youngblood, Allison A., J. Wilson, David, Loyd, R. O. Parke, Pineda, J. Sebastian, Duvvuri, Girish M., Kowalski, Adam F., Berta-Thompson, Zachory K.

“…Abstract The high-energy X-ray and ultraviolet (UV) radiation fields of exoplanet host stars play a crucial role in controlling the atmospheric conditions and…”
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USING HIGH-RESOLUTION OPTICAL SPECTRA TO MEASURE INTRINSIC PROPERTIES OF LOW-MASS STARS: NEW PROPERTIES FOR KOI-314 AND GJ 3470 by Pineda, J Sebastian, Bottom, Michael, Johnson, John A

“…We construct high signal-to-noise "template" spectra by co-adding hundreds of spectra of nearby dwarfs spanning K7 to M4, taken with Keck/HIRES as part of the…”
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The Far Ultraviolet M-dwarf Evolution Survey. I. The Rotational Evolution of High-energy Emissions by Pineda, J Sebastian, Youngblood, Allison, France, Kevin

“…M-dwarf stars are prime targets for exoplanet searches because of their close proximity and favorable properties for both planet detection and…”
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The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars by Pineda, J. Sebastian, Youngblood, Allison, France, Kevin

“…Abstract Accurate stellar properties are essential for precise stellar astrophysics and exoplanetary science. In the M-dwarf regime, much effort has gone into…”
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A Panchromatic View of Brown Dwarf Aurorae by Pineda, J. Sebastian, Hallinan, Gregg, Kao, Melodie M.

“…Stellar coronal activity has been shown to persist into the low-mass star regime, down to late M-dwarf spectral types. However, there is now an accumulation of…”
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A Deep Radio Limit for the TRAPPIST-1 System by Pineda, J. Sebastian, Hallinan, Gregg

“…The first nearby very-low-mass star-planet-host discovered, TRAPPIST-1, presents not only a unique opportunity for studying a system of multiple terrestrial…”
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AURORAL RADIO EMISSION FROM LATE L AND T DWARFS: A NEW CONSTRAINT ON DYNAMO THEORY IN THE SUBSTELLAR REGIME by Kao, Melodie M., Hallinan, Gregg, Pineda, J. Sebastian, Escala, Ivanna, Burgasser, Adam, Bourke, Stephen, Stevenson, David

“…ABSTRACT We have observed six late L and T dwarfs with the Karl G. Jansky Very Large Array (VLA) to investigate the presence of highly circularly polarized…”
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AN ACTIVITY-ROTATION RELATIONSHIP AND KINEMATIC ANALYSIS OF NEARBY MID-TO-LATE-TYPE M DWARFS by West, Andrew A., Weisenburger, Kolby L., Irwin, Jonathan, Berta-Thompson, Zachory K., Charbonneau, David, Dittmann, Jason, Pineda, J. Sebastian

“…ABSTRACT Using spectroscopic observations and photometric light curves of 238 nearby M dwarfs from the MEarth exoplanet transit survey, we examine the…”
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Radio Emission from Binary Ultracool Dwarf Systems by Kao, Melodie M., Sebastian Pineda, J.

“…Abstract Well-characterized binary systems will provide valuable opportunities to study the conditions that are necessary for the onset of both auroral and…”
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Constraints on magnetospheric radio emission from Y dwarfs by Kao, Melodie M, Hallinan, Gregg, Pineda, J Sebastian

“…Abstract As a pilot study of magnetism in Y dwarfs, we have observed the three known infrared variable Y dwarfs WISE J085510.83−071442.5, WISE…”
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Impact of Electron Precipitation on Brown Dwarf Atmospheres and the Missing Auroral H3+ Emission by Pineda, J. Sebastian, Hallinan, Gregg, Desert, Jean-Michel, Harding, Leon K.

“…Abstract Recent observations have demonstrated that very low-mass stars and brown dwarfs are capable of sustaining strong magnetic fields despite their cool…”
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