Search Results - "Vivas, K. A."
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Detailed Abundances in the Ultra-faint Magellanic Satellites Carina II and III
Published in The Astrophysical journal (20-01-2020)“…We present the first detailed elemental abundances in the ultra-faint Magellanic satellite galaxies Carina II (Car II) and Carina III (Car III). With…”
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A Spitzer Space Telescope Study of Disks in the Young σ Orionis Cluster
Published in The Astrophysical journal (20-06-2007)“…We report new Spitzer Space Telescope observations, using the IRAC and MIPS instruments, of the young ( similar to 3 Myr) a Orionis cluster. We identify 336…”
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THE HIGH CADENCE TRANSIENT SURVEY (HITS). I. SURVEY DESIGN AND SUPERNOVA SHOCK BREAKOUT CONSTRAINTS
Published in The Astrophysical journal (01-12-2016)“…ABSTRACT We present the first results of the High Cadence Transient Survey (HiTS), a survey for which the objective is to detect and follow-up optical…”
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Light-curve Recovery with Rubin-LSST. II. Unveiling the Darkness of the Galactic Bulge (VESTALE) with RR Lyrae
Published in The Astrophysical journal. Supplement series (01-08-2024)“…Abstract This work is part of VESTALE, a project initiated within the Legacy Survey of Space and Time (LSST) Cadence Strategy Optimization Process. Its goal is…”
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DELVE 6: An Ancient, Ultra-faint Star Cluster on the Outskirts of the Magellanic Clouds
Published in Astrophysical journal. Letters (01-08-2023)“…Abstract We present the discovery of DELVE 6, an ultra-faint stellar system identified in the second data release of the DECam Local Volume Exploration (DELVE)…”
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Spitzer Observations of the Orion OB1 Association: Disk Census in the Low-Mass Stars
Published in The Astrophysical journal (20-12-2007)“…We present new Spitzer observations of two fields in the Orion OB1 association. We report IRAC/MIPS observations for 115 confirmed members and 41 photometric…”
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The QUEST RR Lyrae Survey – III. The low Galactic latitude catalogue
Published in Monthly notices of the Royal Astronomical Society (21-12-2012)“…ABSTRACT We present results for the QUEST RR Lyrae Survey at low Galactic latitude, conducted entirely with observations obtained with the QUEST mosaic camera…”
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The QUEST RR Lyrae Survey: Confirmation of the Clump at 50 Kiloparsecs and Other Overdensities in the Outer Halo
Published in The Astrophysical journal (10-06-2001)Get full text
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Discovery of two neighbouring satellites in the Carina constellation with MagLiteS
Published in Monthly notices of the Royal Astronomical Society (21-04-2018)“…Abstract We report the discovery of two ultra-faint satellites in the vicinity of the Large Magellanic Cloud (LMC) in data from the Magellanic Satellites…”
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The southern stellar stream spectroscopic survey (S5): Overview, target selection, data reduction, validation, and early science
Published in Monthly notices of the Royal Astronomical Society (01-12-2019)“…ABSTRACT We introduce the southern stellar stream spectroscopy survey (S5), an on-going program to map the kinematics and chemistry of stellar streams in the…”
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A Segmented Period–Luminosity Relation for Nearby Extragalactic Delta Scuti Stars
Published in Astrophysical journal. Letters (01-11-2022)“…Abstract The period–luminosity relations (PLRs) of Milky Way δ Scuti ( δ Sct) stars have been described to the present day by a linear relation. However, when…”
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LA SILLA QUEST RR LYRAE STAR SURVEY: REGION I
Published in The Astrophysical journal (20-01-2014)“…A search for RR Lyrae stars (RRLSs) in ~ 840 deg super(2) of the sky in right ascension 150[degrees]-210[degrees] and declination -10[degrees] to + 10[degrees]…”
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Pegasus IV: Discovery and Spectroscopic Confirmation of an Ultra-faint Dwarf Galaxy in the Constellation Pegasus
Published in The Astrophysical journal (01-01-2023)“…Abstract We report the discovery of Pegasus IV, an ultra-faint dwarf galaxy found in archival data from the Dark Energy Camera processed by the DECam Local…”
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Six More Ultra-faint Milky Way Companions Discovered in the DECam Local Volume Exploration Survey
Published in The Astrophysical journal (01-08-2023)“…Abstract We report the discovery of six ultra-faint Milky Way satellites identified through matched-filter searches conducted using Dark Energy Camera (DECam)…”
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Discovery of an Ultra-faint Stellar System near the Magellanic Clouds with the DECam Local Volume Exploration Survey
Published in The Astrophysical journal (01-03-2021)“…Abstract We report the discovery of a new ultra-faint stellar system found near the Magellanic Clouds in the DECam Local Volume Exploration Survey. This new…”
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Search for RR Lyrae stars in DES ultrafaint systems: Grus I, Kim 2, Phoenix II, and Grus II
Published in Monthly notices of the Royal Astronomical Society (01-12-2019)“…ABSTRACT This work presents the first search for RR Lyrae stars (RRLs) in four of the ultrafaint systems imaged by the Dark Energy Survey using SOAR/Goodman…”
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Ships Passing in the Night: Spectroscopic Analysis of Two Ultra-faint Satellites in the Constellation Carina
Published in The Astrophysical journal (20-04-2018)“…Abstract We present Magellan/IMACS, Anglo-Australian Telescope/AAOmega+2dF, and Very Large Telescope/GIRAFFE+FLAMES spectroscopy of the Carina II (Car II) and…”
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Variable stars in Local Group galaxies – V. The fast and early evolution of the low-mass Eridanus II dSph galaxy
Published in Monthly notices of the Royal Astronomical Society (01-11-2021)“…ABSTRACT We present a detailed study of the variable star population of Eridanus II (Eri II), an ultra-faint dwarf galaxy that lies close to the Milky Way…”
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Two Ultra-faint Milky Way Stellar Systems Discovered in Early Data from the DECam Local Volume Exploration Survey
Published in The Astrophysical journal (20-02-2020)“…We report the discovery of two ultra-faint stellar systems found in early data from the DECam Local Volume Exploration survey (DELVE). The first system,…”
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MCNeil's Nebula in Orion: The Outburst History
Published in The Astrophysical journal (10-05-2004)Get full text
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