Search Publications
Moving groups across Galactocentric radius with Gaia DR3
Aguerri, J. Alfonso L.; D'Onghia, Elena; Lucchini, Scott +1 more
The kinematic plane of stars near the Sun has proven an indispensable tool for untangling the complexities of the structure of our Milky Way (MW). With ever improving data, numerous kinematic 'moving groups' of stars have been better characterized, and new ones continue to be discovered. Here we present an improved method for detecting these group…
New ASKAP radio supernova remnants and candidates in the Large Magellanic Cloud
Haberl, F.; Hill, T.; Payne, J. L. +34 more
We present a new Australian Square Kilometre Array Pathfinder (ASKAP) sample of 14 radio supernova remnants (SNR) candidates in the Large Magellanic Cloud (LMC). This new sample is a significant increase to the known number of older, larger, and low surface brightness LMC SNRs. We employ a multifrequency search for each object and found possible t…
Stellar associations powering H II regions - I. Defining an evolutionary sequence
Kruijssen, J. M. Diederik; Leroy, Adam K.; Rosolowsky, Erik +30 more
Connecting the gas in H II regions to the underlying source of the ionizing radiation can help us constrain the physical processes of stellar feedback and how H II regions evolve over time. With PHANGS-MUSE, we detect nearly 24 000 H II regions across 19 galaxies and measure the physical properties of the ionized gas (e.g. metallicity, ionization …
The late time optical evolution of twelve core-collapse supernovae: detection of normal stellar winds
Kochanek, C. S.; Neustadt, J. M. M.; Rizzo Smith, M.
We analyse the late time evolution of 12 supernovae (SNe) occurring over the last ~41 yr, including nine Type IIP/L, two IIb, and one Ib/c, using UBVR optical data from the Large Binocular Telescope (LBT) and difference imaging. We see late time (5-42 yr) emission from nine of the eleven Type II SNe (eight Type IIP/L, one IIb). We consider radioac…
The three-dimensional structure of galactic molecular cloud complexes out to 2.5 kpc
Bailer-Jones, C. A. L.; Fouesneau, M.; Dharmawardena, T. E. +5 more
Knowledge of the three-dimensional structure of Galactic molecular clouds is important for understanding how clouds are affected by processes such as turbulence and magnetic fields and how this structure affects star formation within them. Great progress has been made in this field with the arrival of the Gaia mission, which provides accurate dist…
The SPHERE view of three interacting twin disc systems in polarized light
Garufi, Antonio; Pinilla, Paola; Dullemond, Cornelis P. +12 more
Dense stellar environments as hosts of ongoing star formation increase the probability of gravitational encounters among stellar systems during the early stages of evolution. Stellar interaction may occur through non-recurring, hyperbolic, or parabolic passages (a so-called 'fly-by'), through secular binary evolution, or through binary capture. In…
Revealing AGNs through TESS variability
Holoien, Thomas W. -S.; Vallely, Patrick J.; Auchettl, Katie +7 more
We used Transiting Exoplanet Survey Satellite (TESS) data to identify 29 candidate active galactic nuclei (AGNs) through their optical variability. The high-cadence, high-precision TESS light curves present an opportunity for the identification of AGNs, including those not selected through other methods. Of the candidates, we found that 18 have ei…
Cepheid metallicity in the Leavitt law (C-MetaLL) survey - III. Simultaneous derivation of the Gaia parallax offset and period-luminosity-metallicity coefficients
Ripepi, V.; Molinaro, R.; Marconi, M. +7 more
Classical Cepheids (DCEPs) are the most important standard candles in the extra-galactic distance scale thanks to the period-luminosity ($\rm PL$), period-luminosity-colour ($\rm PLC$), and period-Wesenheit ($\rm PW$) relations that hold for these objects. The advent of the Gaia mission, and in particular the Early Data Release 3 (EDR3), provided …
[O I] 6300 Å emission as a probe of external photoevaporation of protoplanetary discs
Henney, W. J.; Haworth, Thomas J.; Ballabio, Giulia
We study the utility of the [O I] 6300 Å forbidden line for identifying and interpreting externally driven photoevaporative winds in different environments and at a range of distances. Thermally excited [O I] 6300 Å is a well-known tracer of inner disc winds, so any external contribution needs to be distinguishable. In external winds, the line is …
The dark side of FIRE: predicting the population of dark matter subhaloes around Milky Way-mass galaxies
Sanderson, Robyn; Wetzel, Andrew; Samuel, Jenna +3 more
A variety of observational campaigns seek to test dark matter models by measuring dark matter subhaloes at low masses. Despite their predicted lack of stars, these subhaloes may be detectable through gravitational lensing or via their gravitational perturbations on stellar streams. To set measurable expectations for subhalo populations within Lamb…