Search Results - "Ammons, S. M"
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The Asymptotic Giant Branch and the Tip of the Red Giant Branch as Probes of Star Formation History: The Nearby Dwarf Irregular Galaxy KKH 98
Published in The Astrophysical journal (20-03-2010)“…We investigate the utility of the asymptotic giant branch (AGB) and the red giant branch (RGB) as probes of the star formation history (SFH) of the nearby (D =…”
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FIRST FRONTIER FIELD CONSTRAINTS ON THE COSMIC STAR FORMATION RATE DENSITY AT z ∼ 10—THE IMPACT OF LENSING SHEAR ON COMPLETENESS OF HIGH-REDSHIFT GALAXY SAMPLES
Published in The Astrophysical journal (20-07-2015)“…We search the complete Hubble Frontier Field data set of Abell 2744 and its parallel field for z ~ 10 sources to further refine the evolution of the cosmic…”
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3
Adaptive Optics Imaging of Quasi-stellar Objects with Double-peaked Narrow Lines: Are They Dual Active Galactic Nuclei?
Published in The Astrophysical journal (20-09-2011)“…Active galaxies hosting two accreting and merging supermassive black holes (SMBHs)--dual active galactic nuclei (AGNs)--are predicted by many current and…”
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4
The N2K Consortium. IV. New Temperatures and Metallicities for More than 100,000 FGK Dwarfs
Published in The Astrophysical journal (20-02-2006)“…We have created specialized target lists for radial velocity surveys that are biased toward stars that (1) possess planets and (2) are easiest to observe with…”
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The N2K Consortium. V. Identifying Very Metal-rich Stars with Low-Resolution Spectra: Finding Planet-Search Targets
Published in The Astrophysical journal (01-02-2006)“…We present empirical calibrations that provide estimates of stellar metallieity, effective temperature, and surface gravity as a function of Lick IDS indices…”
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6
Imaging the 44 AU Kuiper Belt-analogue debris ring around HD 141569A with GPI polarimetry
Published 26-11-2019“…We present the first polarimetric detection of the inner disk component around the pre-main sequence B9.5 star HD 141569A. Gemini Planet Imager H-band (1.65…”
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7
Neptune long-lived atmospheric features in 2013–2015 from small (28-cm) to large (10-m) telescopes
Published in Icarus (New York, N.Y. 1962) (01-10-2017)“…•We demonstrate capabilities of amateur astronomers to observe and track large cloud systems in Neptune's atmosphere presenting data from 2013 to 2015.•Two…”
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First Frontier Field Constraints on the Cosmic Star-Formation Rate Density at z~10 - The Impact of Lensing Shear on Completeness of High-Redshift Galaxy Samples
Published 21-07-2015“…We search the complete Hubble Frontier Field dataset of Abell 2744 and its parallel field for z~10 sources to further refine the evolution of the cosmic…”
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9
Neptune long-lived atmospheric features in 2013-2015 from small (28-cm) to large (10-m) telescopes
Published 26-09-2017“…Hueso et al., Icarus 295, 89-109 (2017) Since 2013, observations of Neptune with small telescopes have resulted in several detections of long-lived bright…”
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First frontier field constraints on the cosmic star formation rate density ATz ~ 10—the impact of lensing shear on completeness of high-redshift galaxy samples
Published in The Astrophysical journal (23-07-2015)“…In this work, we search the complete Hubble Frontier Field data set of Abell 2744 and its parallel field for $z\sim 10$ sources to further refine the evolution…”
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11
FIRST FRONTIER FIELD CONSTRAINTS ON THE COSMIC STAR FORMATION RATE DENSITY AT z ∼ 10-THE IMPACT OF LENSING SHEAR ON COMPLETENESS OF HIGH-REDSHIFT GALAXY SAMPLES Based on data obtained with the Hubble Space Telescope operated by AURA, Inc. for NASA under contract NAS5-26555
Published in The Astrophysical journal (23-07-2015)“…ABSTRACT We search the complete Hubble Frontier Field data set of Abell 2744 and its parallel field for sources to further refine the evolution of the cosmic…”
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12
An Optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO
Published 24-04-2017“…We present H band spectroscopic and Halpha photometric observations of HD 100546 obtained with GPI and MagAO. We detect H band emission at the location of the…”
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13
ADAPTIVE OPTICS IMAGING OF QUASI-STELLAR OBJECTS WITH DOUBLE-PEAKED NARROW LINES: ARE THEY DUAL ACTIVE GALACTIC NUCLEI?
Published in The Astrophysical journal (20-09-2011)“…Active galaxies hosting two accreting and merging supermassive black holes (SMBHs)-dual active galactic nuclei (AGNs)-are predicted by many current and popular…”
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14
Adaptive Optics Imaging of QSOs with Double-Peaked Narrow Lines: Are they Dual AGNs?
Published 07-07-2011“…Astrophys.J.739:44,2011 Active galaxies hosting two accreting and merging super-massive black holes (SMBHs) -- dual Active Galactic Nuclei (AGN) -- are…”
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15
Superresolving Distant Galaxies with Gravitational Telescopes: Keck Laser Guide Star Adaptive Optics and Hubble Space Telescope Imaging of the Lens System SDSS J0737+3216
Published in The Astrophysical journal (20-12-2007)“…We combine high-resolution images in four optical/infrared bands, obtained with the laser guide star adaptive optics (LGSAO) system on the Keck telescope and…”
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16
The Asymptotic Giant Branch and the Tip of the Red Giant Branch as Probes of Star Formation History: The Nearby Dwarf Irregular Galaxy KKH 98
Published 02-02-2010“…We investigate the utility of the asymptotic giant branch (AGB) and the red giant branch (RGB) as probes of the star formation history (SFH) of the nearby…”
Get full text
Journal Article -
17
Super-resolving distant galaxies with gravitational telescopes: Keck-LGSAO and Hubble imaging of the lens system SDSSJ0737+3216
Published 02-10-2007“…We combine high-resolution images in four optical/infra-red bands, obtained with the laser guide star adaptive optics system on the Keck Telescope and with the…”
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18
Ground Layer Adaptive Optics for the W. M. Keck Observatory: Feasibility Study
Published 23-07-2018“…2018 Proceedings of the SPIE, Adaptive Optics System VI Ground-layer adaptive optics (GLAO) systems offer the possibility of improving the "seeing" of large…”
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