Search Results - "Jayasinghe, Tharindu"
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1
A noninteracting low-mass black hole-giant star binary system
Published in Science (American Association for the Advancement of Science) (01-11-2019)“…Black hole binary systems with companion stars are typically found via their x-ray emission, generated by interaction and accretion. Noninteracting binaries…”
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2
Modeling of Granulation in Red Supergiants in the Magellanic Clouds with the Gaussian Process Regressions
Published in The Astrophysical journal (01-07-2024)“…Abstract The granulation of red supergiants (RSGs) in the Magellanic Clouds is systematically investigated by combining the latest RSG samples and light curves…”
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3
Response to Comment on "A noninteracting low-mass black hole-giant star binary system"
Published in Science (American Association for the Advancement of Science) (08-05-2020)“…Van den Heuvel and Tauris argue that if the red giant star in the system 2MASS J05215658+4359220 has a mass of 1 solar mass ( ), then its unseen companion…”
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4
High mass function ellipsoidal variables in the Gaia Focused Product Release: searching for black hole candidates in the binary zoo
Published in The open journal of astrophysics (04-04-2024)“…The recent Gaia Focused Product Release contains radial velocity time-series for more than 9,000 Gaia long-period photometric variables. Here we search for…”
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5
The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar, and APOGEE-2 Data
Published in The Astrophysical journal (16-03-2022)“…Abstract This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase…”
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6
Unicorns and giraffes in the binary zoo: stripped giants with subgiant companions
Published in Monthly notices of the Royal Astronomical Society (14-04-2022)“…ABSTRACT We analyse two binary systems containing giant stars, V723 Mon (‘the Unicorn’) and 2M04123153+6738486 (‘the Giraffe’). Both giants orbit more massive…”
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7
Birth of a Be star: an APOGEE search for Be stars forming through binary mass transfer
Published in Monthly notices of the Royal Astronomical Society (19-09-2022)“…ABSTRACT Motivated by recent suggestions that many Be stars form through binary mass transfer, we searched the APOGEE survey for Be stars with bloated,…”
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8
Seven classes of rotational variables from a study of 50 000 spotted stars with ASAS-SN, Gaia, and APOGEE
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT We examine the properties of ∼50 000 rotational variables from the ASAS-SN survey using distances, stellar properties, and probes of binarity from…”
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Journal Article -
9
A Catalog of M-dwarf Flares with ASAS-SN
Published in The Astrophysical journal (01-04-2020)“…We analyzed the light curves of 1376 early-to-late, nearby M dwarfs to search for white-light flares using photometry from the All-Sky Automated Survey for…”
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10
ASAS-SN follow-up of IceCube high-energy neutrino alerts
Published in Monthly notices of the Royal Astronomical Society (10-09-2022)“…ABSTRACT We report on the search for optical counterparts to IceCube neutrino alerts released between 2016 April and 2021 August with the All-Sky Automated…”
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11
The Milky Way Project second data release: bubbles and bow shocks
Published in Monthly notices of the Royal Astronomical Society (01-09-2019)“…ABSTRACT Citizen science has helped astronomers comb through large data sets to identify patterns and objects that are not easily found through automated…”
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12
The Milky Way Project: Probing Star Formation with First Results on Yellowballs from DR2
Published in The Astrophysical journal (01-04-2021)“…Abstract Yellowballs (YBs) were first discovered during the Milky Way Project (MWP) citizen science initiative. The MWP users noticed compact, yellow regions…”
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13
A hidden population of massive white dwarfs: two spotted K + WD binaries
Published in Monthly notices of the Royal Astronomical Society (01-03-2024)“…ABSTRACT The identification and characterization of massive (≳ 0.8 M⊙) white dwarfs is challenging in part due to their low luminosity. Here, we present two…”
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14
Stellar Spectra Fitting with Amortized Neural Posterior Estimation and nbi
Published 09-12-2023“…Modern surveys often deliver hundreds of thousands of stellar spectra at once, which are fit to spectral models to derive stellar parameters/labels. Therefore,…”
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15
Modeling of Granulation in Red Supergiants in the Magellanic Clouds with the Gaussian Process Regressions
Published 02-05-2024“…The granulation of red supergiants (RSGs) in the Magellanic Clouds are systematically investigated by combining the latest RSGs samples and light curves from…”
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Journal Article -
16
The Discovery and Characterization of Variable Stars in the All-Sky Automated Survey for SuperNovae
Published 01-01-2022“…While the Universe might at first appear static and unchanging to a casual observer, it is teeming with variable sources and cataclysmic events that mark the…”
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Dissertation -
17
Seven Classes of Rotational Variables From a Study of 50,000 Spotted Stars with ASAS-SN, Gaia, and APOGEE
Published 16-05-2023“…We examine the properties of $\sim50,000$ rotational variables from the ASAS-SN survey using distances, stellar properties, and probes of binarity from…”
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Journal Article -
18
Unicorns and Giraffes in the binary zoo: stripped giants with subgiant companions
Published 11-03-2022“…We analyze two binary systems containing giant stars, V723 Mon ("the Unicorn") and 2M04123153+6738486 ("the Giraffe"). Both giants orbit more massive but less…”
Get full text
Journal Article -
19
A Multiwavelength Study of the Massive Colliding Wind Binary WR 20a: A Possible Progenitor for Fast-Spinning LIGO Binary Black Hole Mergers
Published 05-12-2022“…WR 20a is the most massive close-in binary known in our Galaxy. It is composed of two $\approx$80 M$_\odot$ Wolf-Rayet stars with a short period of…”
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Journal Article -
20
Birth of a Be star: an APOGEE search for Be stars forming through binary mass transfer
Published 24-08-2022“…Motivated by recent suggestions that many Be stars form through binary mass transfer, we searched the APOGEE survey for Be stars with bloated, stripped…”
Get full text
Journal Article