97 citations · 352 across the 24 of their papers we have counts for
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Variable Stars in M31 Stellar Clusters from the Panchromatic Hubble Andromeda Treasury
Richard Smith, Avi Patel, Monika D. Soraisam +9
Variable stars in stellar clusters can offer key constraints on stellar evolution and pulsation models, utilising estimates of host cluster properties to constrain stellar physical…
The SN 2023ixf Progenitor in M101: II. Properties
Schuyler D. Van Dyk, Sundar Srinivasan, Jennifer E. Andrews +12
We follow our first paper with an analysis of the ensemble of the extensive pre-explosion ground- and space-based infrared observations of the red supergiant (RSG) progenitor candi…
The SN 2023ixf Progenitor in M101: I. Infrared Variability
Monika D. Soraisam, Tamás Szalai, Schuyler D. Van Dyk +6
Observational evidence points to a red supergiant (RSG) progenitor for SN 2023ixf. The progenitor candidate has been detected in archival images at wavelengths (>0.6 micron) where…
AT2020caa: A Type Ia Supernova with a Prior Outburst or a Statistical Fluke?
Monika Soraisam, Thomas Matheson, Chien-Hsiu Lee
We recently discovered an extragalactic transient, AT2020caa, using the community alert broker ANTARES. This transient apparently exhibited two outbursts in a time span of a year (…
AT 2020iko: a WZ Sge-type DN candidate with an anomalous precursor event
Monika Soraisam, Sarah DeSantis, Chien-Hsiu Lee +11
The ongoing Zwicky Transient Facility (ZTF) survey is generating a massive alert rate from a variety of optical transients and variable stars, which are being filtered down to subs…
PHAT XX. AGB stars and other cool giants in M31 star clusters
Leo Girardi, Martha L. Boyer, L. Clifton Johnson +20
The presence of AGB stars in clusters provides key constraints for stellar models, as has been demonstrated with historical data from the Magellanic Clouds. In this work, we look f…
Variability of massive stars in M31 from the Palomar Transient Factory
Monika D. Soraisam, Lars Bildsten, Maria R. Drout +5
Using data from the (intermediate) Palomar Transient Factory (iPTF), we characterize the time variability of ~500 massive stars in M31. Our sample is those stars which are spectral…
Variability of Red Supergiants in M31 from the Palomar Transient Factory
Monika D. Soraisam, Lars Bildsten, Maria R. Drout +9
Most massive stars end their lives as Red Supergiants (RSGs), a short-lived evolution phase when they are known to pulsate with varying amplitudes. The RSG period-luminosity (PL) r…
Population of post-nova supersoft X-ray sources
Monika D. Soraisam, Marat Gilfanov, William M. Wolf +1
Novae undergo a supersoft X-ray phase of varying duration after the optical outburst. Such transient post-nova supersoft X-ray sources (SSSs) are the majority of the observed SSSs…
Constraining the role of novae as progenitors of Type Ia Supernovae
Monika Soraisam, Marat Gilfanov
(Abridged) White dwarfs (WDs) undergoing unstable nuclear burning on their surfaces, resulting in the nova phenomenon, have been considered as one of the prospective candidates for…