Search Results - "Looper, Dagny L"

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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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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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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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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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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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

“…We combine optical, near-infrared and mid-infrared spectra and photometry to construct expanded spectral energy distributions (SEDs) for 145 field age…”
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ULAS J141623.94+134836.3: a Blue T Dwarf Companion to a Blue L Dwarf by Burgasser, Adam J, Looper, Dagny L, Rayner, John T

“…We confirm the substellar nature of ULAS J141623.94+134836.3, a common proper motion companion to the blue L dwarf SDSS J141624.08+134826.7 identified by…”
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A Sample of Very Young Field L Dwarfs and Implications for the Brown Dwarf by Kirkpatrick, J. Davy, Cruz, Kelle L, Barman, Travis S, Burgasser, Adam J, Looper, Dagny L, Tinney, C. G, Gelino, Christopher R, Lowrance, Patrick J, Liebert, James, Carpenter, John M, Hillenbrand, Lynne A, Stauffer, John R

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SpeX Spectroscopy of Unresolved Very Low Mass Binaries. II. Identification of Fourteen 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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Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. IV. Discovery of an M9 + L6 BInary Separated by Over 100 AU by Dhital, Saurav, Burgasser, Adam J, Looper, Dagny L, Stassun, Keivan G

“…We report the discovery of a faint L6 \pm 1 companion to the previously known M9 dwarf, 2MASS J01303563-4445411, based on our near-infrared imaging and…”
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Identification of a Wide, Low-Mass Multiple System Containing the Brown Dwarf 2MASS J0850359+105716 by Faherty, Jacqueline K, Burgasser, Adam J, Bochanski, John J, Looper, Dagny L, West, Andrew A, van der Bliek, Nicole S

“…We report our discovery of NLTT 20346 as an M5+M6 companion system to the tight binary (or triple) L dwarf 2MASS J0850359+105716. This nearby (~31 pc), widely…”
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Cool Star Science with the FIRE Spectrograph by Burgasser, Adam J, Simcoe, Robert A, Bochanski, John J, Melis, Carl, McMurtry, Craig, Pipher, Judy, Forrest, William, Cushing, Michael C, Looper, Dagny L, Mohanty, Subhanjoy

“…The Folded-port InfraRed Echellette (FIRE) has recently been commissioned on the Magellan 6.5m Baade Telescope. This single object, near-infrared spectrometer…”
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A Widely-Separated, Highly-Occluded Companion to the Nearby Low-Mass T Tauri Star TWA 30 by Looper, Dagny L, Bochanski, John J, Burgasser, Adam J, Mohanty, Subhanjoy, Mamajek, Eric E, Faherty, Jacqueline K, West, Andrew A, Pitts, Mark A

“…We report the discovery of TWA 30B, a wide (~3400 AU), co-moving M dwarf companion to the nearby (~42 pc) young star TWA 30. Companionship is confirmed from…”
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