Search Results - "Looper, Dagny"

SpeX SPECTROSCOPY OF UNRESOLVED VERY LOW MASS BINARIES. II. IDENTIFICATION OF 14 CANDIDATE BINARIES WITH LATE-M/EARLY-L AND T DWARF COMPONENTS by GAGLIUFFI, DANIELLA C BARDALEZ, Burgasser, Adam J, GELINO, CHRISTOPHER R, Looper, Dagny L, Nicholls, Christine P, Schmidt, Sarah J, Cruz, Kelle, West, Andrew A, Gizis, John E, METCHEV, STANIMIR

“…Multiplicity is a key statistic for understanding the formation of very low mass (VLM) stars and brown dwarfs. Currently, the separation distribution of VLM…”
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The Ultracool SpeXtroscopic Survey. I. Volume-limited Spectroscopic Sample and Luminosity Function of M7−L5 Ultracool Dwarfs by Bardalez Gagliuffi, Daniella C., Burgasser, Adam J., Schmidt, Sarah J., Theissen, Christopher, Gagné, Jonathan, Gillon, Michael, Sahlmann, Johannes, Faherty, Jacqueline K., Gelino, Christopher, Cruz, Kelle L., Skrzypek, Nathalie, Looper, Dagny

“…We present a volume-limited, spectroscopically verified sample of M7−L5 ultracool dwarfs (UCDs) within 25 pc. The sample contains 410 sources, of which 93%…”
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SpeX Spectroscopy of Unresolved Very Low Mass Binaries. I. Identification of 17 Candidate Binaries Straddling the L Dwarf/T Dwarf Transition by Burgasser, Adam J, Cruz, Kelle L, Cushing, Michael, Gelino, Christopher R, Looper, Dagny L, Faherty, Jacqueline K, Kirkpatrick, J. Davy, Reid, I. Neill

“…We report the identification of 17 candidate brown dwarf binaries whose components straddle the L dwarf/T dwarf transition. These sources were culled from a…”
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A SAMPLE OF VERY YOUNG FIELD L DWARFS AND IMPLICATIONS FOR THE BROWN DWARF LITHIUM TEST AT EARLY AGES by KIRKPATRICK, J. Davy, CRUZ, Kelle L, HILLENBRAND, Lynne A, STAUFFER, John R, BARMAN, Travis S, BURGASSER, Adam J, LOOPER, Dagny L, TINNEY, C. G, GELINO, Christopher R, LOWRANCE, Patrick J, LIEBERT, James, CARPENTER, John M

“…Using a large sample of optical spectra of late-type dwarfs, we identify a subset of late-M through L field dwarfs that, because of the presence of low-gravity…”
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Discovery of Two Nearby Peculiar L Dwarfs from the 2MASS Proper-Motion Survey: Young or Metal-Rich? by Looper, Dagny L, Kirkpatrick, J. Davy, Cutri, Roc M, Barman, Travis, Burgasser, Adam J, Cushing, Michael C, Roellig, Thomas, McGovern, Mark R, McLean, Ian S, Rice, Emily, Swift, Brandon J, Schurr, Steven D

“…We present the discovery of two nearby L dwarfs from our 2MASS proper- motion search, which uses multiepoch 2MASS observations covering [image]4700 deg…”
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Discovery of a T Dwarf Binary with the Largest Known J-Band Flux Reversal by Looper, Dagny L, Gelino, Christopher R, Burgasser, Adam J, Kirkpatrick, J. Davy

“…We present Keck laser guide star observations of two T2.5 dwarfs-2MASS J11061197+2754225 and 2MASS J14044941-3159329-using NIRC2 on Keck II and find 2MASS…”
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Clouds, Gravity, and Metallicity in Blue L Dwarfs: The Case of 2MASS J11263991–5003550 by Burgasser, Adam J, Looper, Dagny L, Kirkpatrick, J. Davy, Cruz, Kelle L, Swift, Brandon J

“…Optical and near-infrared spectroscopy of the newly discovered peculiar L dwarf 2MASS J11263991-5003550 are presented. Folkes et al. classified this source as…”
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Discovery of an M9.5 Candidate Brown Dwarf in the TW Hydrae Association: DENIS J124514.1–442907 by Looper, Dagny L, Burgasser, Adam J, Kirkpatrick, J. Davy, Swift, Brandon J

“…We report the discovery of a fifth candidate substellar system in the similar to 5-10 Myr TW Hydrae association: DENIS J124514.1-442907. This object has a NIR…”
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The Enigmatic Young, Low-mass Variable TWA 30 by Looper, Dagny L, Mohanty, Subhanjoy, Bochanski, John J, Burgasser, Adam J, Mamajek, Eric E, Herczeg, Gregory J, West, Andrew A, Faherty, Jacqueline K, Rayner, John, Pitts, Mark A, Kirkpatrick, J. Davy

“…TWA 30 is a remarkable young (7 {+-} 3 Myr), low-mass (0.12 {+-} 0.04 M{sub sun}), late-type star (M5 {+-} 1) residing 42 {+-} 2 pc away from the Sun in the TW…”
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Discovery of a High Proper Motion L Dwarf Binary: 2MASS J15200224–4422419AB by Burgasser, Adam J, Looper, Dagny L, Kirkpatrick, J. Davy, Liu, Michael C

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FIRE SPECTROSCOPY OF FIVE LATE-TYPE T DWARFS DISCOVERED WITH THE WIDE-FIELD INFRARED SURVEY EXPLORER by BURGASSER, Adam J, CUSHING, Michael C, MAINZER, A, THOMPSON, Maggie A, MARSH, Kenneth A, BAUER, James M, WRIGHT, Edward L, KIRKPATRICK, J. Davy, GELINO, Christopher R, GRIFFITH, Roger L, LOOPER, Dagny L, TINNEY, Christopher, SIMCOE, Robert A, BOCHANSKI, John J, SKRUTSKIE, Michael F

“…We present the discovery of five late-type T dwarfs identified with the Wide-field Infrared Survey Explorer (WISE). Low-resolution near-infrared spectroscopy…”
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FUNDAMENTAL PARAMETERS AND SPECTRAL ENERGY DISTRIBUTIONS OF YOUNG AND FIELD AGE OBJECTS WITH MASSES SPANNING THE STELLAR TO PLANETARY REGIME by Filippazzo, Joseph C., Rice, Emily L., Faherty, Jacqueline, Cruz, Kelle L., Van Gordon, Mollie M., Looper, Dagny L.

“…ABSTRACT We combine optical, near-infrared, and mid-infrared spectra and photometry to construct expanded spectral energy distributions for 145 field age (>500…”
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PROTOPLANETARY DISK MASSES FROM STARS TO BROWN DWARFS by MOHANTY, SUBHANJOY, Greaves, Jane, Mortlock, Daniel, Pascucci, Ilaria, Scholz, Aleks, Thompson, Mark, Apai, Daniel, Lodato, Giuseppe, Looper, Dagny

“…We present SCUBA-2 850 mu m observations of seven very low mass stars (VLMS) and brown dwarfs (BDs). Three are in Taurus and four in the TW Hydrae Association…”
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A Cross-Match of 2MASS and SDSS: Newly Found L and T Dwarfs and an Estimate of the Space Density of T Dwarfs by Metchev, Stanimir A, Kirkpatrick, J. Davy, Berriman, G. Bruce, Looper, Dagny

“…We report new L and T dwarfs found in a cross-match of the SDSS Data Release 1 and 2MASS. Our simultaneous search of the two databases effectively allows us to…”
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A Cross-match of 2MASS and SDSS. II. Peculiar L Dwarfs, Unresolved Binaries, and the Space Density of T Dwarf Secondaries by Geißler, Kerstin, Metchev, Stanimir, Kirkpatrick, J. Davy, Berriman, G. Bruce, Looper, Dagny

“…We present the completion of a program to cross-correlate the Sloan Digital Sky Survey Data Release 1 (SDSS DR1) and Two-Micron All-Sky Survey (2MASS) Point…”
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2MASS J06164006–6407194: The First Outer Halo L Subdwarf by Cushing, Michael C, Looper, Dagny, Burgasser, Adam J, Kirkpatrick, J. Davy, Faherty, Jacqueline, Cruz, Kelle L, Sweet, Anne, Sanderson, Robyn E

“…We present the serendipitous discovery of an L subdwarf in the Two Micron All Sky Survey (2MASS) J06164006-6407194, in a search of the 2MASS for T dwarfs. Its…”
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2MASS J06164006-6407194: THE FIRST OUTER HALO L SUBDWARF by Cushing, Michael C., Looper, Dagny, Burgasser, Adam J., Sanderson, Robyn E., Kirkpatrick, J. Davy, Faherty, Jacqueline, Cruz, Kelle L., Sweet, Anne

“…We present the serendipitous discovery of an L subdwarf in the Two Micron All Sky Survey (2MASS) J06164006-6407194, in a search of the 2MASS for T dwarfs. Its…”
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New Nearby Accreting Young Stars and a First Estimate of the IMF for the TW Hydrae Association by Looper, Dagny Lauren

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A Candidate Wide Brown Dwarf Binary in the Argus Association: 2MASS J14504216-7841413 and 2MASS J14504113-7841383 by Burgasser, Adam J, Looper, Dagny L, Kirkpatrick, J. Davy

“…[not part of Research Note] We report the discovery of a widely-separated low-mass binary as a candidate member of the $\sim$40 Myr Argus Association. Resolved…”
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The Ultracool SpeXtroscopic Survey. I. Volume-Limited Spectroscopic Sample and Luminosity Function of M7$-$L5 Ultracool Dwarfs by Gagliuffi, Daniella C. Bardalez, Burgasser, Adam J, Schmidt, Sarah J, Theissen, Christopher, Gagne, Jonathan, Gillon, Michael, Sahlmann, Johannes, Faherty, Jacqueline K, Gelino, Christopher, Cruz, Kelle L, Skrzypek, Nathalie, Looper, Dagny

“…We present a volume-limited, spectroscopically-verified sample of M7$-$L5 ultracool dwarfs within 25\,pc. The sample contains 410 sources, of which $93\%$ have…”
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