Tootfinder

Yesterday, I've attended the MSE Research Data Forum 2025 organised by #NFDIMatWerk. Aside from the conference presentations, our little ontologies group was meeting and discussing future work on ontologies in NFDI-MatWerk, including NFDIcore, MatWerk Application Ontologies, and PMDcore.

Metric Learning in an RKHS
Gokcan Tatli, Yi Chen, Blake Mason, Robert Nowak, Ramya Korlakai Vinayak
https://arxiv.org/abs/2508.04476 https://arxiv.org/pdf/…

Metric Learning in an RKHS
Metric learning from a set of triplet comparisons in the form of "Do you think item h is more similar to item i or item j?", indicating similarity and differences between items, plays a key role in various applications including image retrieval, recommendation systems, and cognitive psychology. The goal is to learn a metric in the RKHS that reflects the comparisons. Nonlinear metric learning using kernel methods and neural networks have shown great empirical promise. While previous works have a…

Ums Eck von #Karlsruhe:
"Es klingt unglaublich, fast wie ein Serienplot. In einem Kurort im Nordschwarzwald sind Schmierereien aufgetaucht, die auf ein Terrornetzwerk hindeuten. Das Erschreckende: Das Landesamt für Verfassungsschutz weiß von nichts."

Schmierereien in Bad Herrenalb: Die Welt zerstören als Ziel
In Bad Herrenalb sind Graffiti aufgetaucht, die auf satanistische oder rechtsextreme Netzwerke verweisen wie "no lives matter" und "Milikolosskrieg".

The substellar population in Corona Australis
Koraljka Muzic, V\'ictor Almendros-Abad, Andr\'e Baptista, Alexander Scholz, Daniel Capela, Samuel Pearson, Belinda Damian, Afonso doBrito-doVale, Tamara Rom, Ray Jayawardhana
https://arxiv.org/abs/2508.00612

The substellar population in Corona Australis
The substellar initial mass function (IMF) and the formation mechanisms of brown dwarfs (BDs) remain key open questions in star formation theory. IMF characterization in a large number of star-forming regions (SFRs) is essential for constraining these processes. We aim to identify and spectroscopically confirm very low-mass members of the Corona Australis (CrA) SFR to refine its substellar census, determine its low-mass IMF, and compare it to other clusters. Using deep I-band photometry from Su…

Folk i KŸbenhavns område: nu har i den enestående chance, at se min hustrus kunst, uden at skulle hele vejen til nordenfjords.
https://mailchi.mp/5ae27dece962/i-krlighedens-tegn-6747611

Distinguishing Ram Pressure from Tidal Interactions: the Size-Shape Difference (SSD) measure
Rory Smith, Stephanie Tonnesen, Katarina Kraljic, Paula Calderon-Castillo, Antonino Marasco, Yara Jaffe, Benedetta Vulcani, Bianca M. Poggianti
https://arxiv.org/abs/2506.13884

Distinguishing Ram Pressure from Tidal Interactions: the Size-Shape Difference (SSD) measure
Context: In dense environments, disk galaxies can be subjected to tidal interactions with other galaxies and/or ram pressure stripping. Some morphological features are clearly associated with one or the other interaction (e.g. tidal bridges vs long one-sided linear gas tails). But, under certain circumstances, both mechanisms can result in morphological features that could be confused, such as lopsided or asymmetric disks and unwinding spiral arms. Aims: Our aim is to develop new measures for…

Searching for GEMS: TOI-7149~b an Inflated Giant Planet causing a 12% Transit of a Fully Convective M-dwarf
Shubham Kanodia, Caleb I. Ca\~nas, Suvrath Mahadevan, Andrea S. J. Lin, Henry A. Kobulnicky, Ian Karfs, Alexina Birkholz, Arvind Gupta, Mark Everett, Michael Rodruck, Rowen I. Glusman, Te Han, William D. Cochran, Chad F. Bender, Scott A. Diddams, Daniel Krolikowski, Samuel Halverson, Jessica Libby-Roberts, Joe P. Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Gu{\dh}mundur …

Searching for GEMS: TOI-7149~b an Inflated Giant Planet causing a 12% Transit of a Fully Convective M-dwarf
We describe the discovery and characterization of TOI-7149~b, a 0.705 $\pm$ 0.075 $M_J$, 1.18 $\pm$ 0.045 $R_J$ gas giant on a $\sim 2.65$ day period orbit transiting an M4V star with a mass of 0.344 $\pm$ 0.030~$M_{\odot}$ and an effective temperature of 3363 $\pm$ 59 K. The planet was first discovered using NASA's TESS mission, which we confirmed using a combination of ground-based photometry, radial velocities, and speckle imaging. The planet has one of the deepest transits of all known main…

Probing neutrino emission at GeV energies from compact binary mergers detected during O1-O4a with the IceCube Neutrino Observatory
Karlijn Kruiswijk, Mathieu Lamoureux, Matthias Vereecken, Gwenha\"el de Wasseige
https://arxiv.org/abs/2507.13698

Probing neutrino emission at GeV energies from compact binary mergers detected during O1-O4a with the IceCube Neutrino Observatory
Compact binary mergers, detected in gravitational waves since 2015, are candidate sources for astrophysical neutrinos in the GeV regime from proton-proton and proton-neutron collisions. This contribution presents the results of the search for such a signal using mergers detected during the fourth observing run of the LIGO, Virgo, and KAGRA interferometers. We use the dense infill array at the center of the IceCube detector, IceCube-DeepCore, to select neutrino candidates in the 0.5-5 GeV energy…

Spectral analysis of HD 49798, a bright, hydrogen-deficient sdO-type donor star in an accreting X-ray binary
Thomas Rauch (Institute for Astronomy and Astrophysics, Eberhard Karls University, Tuebingen, Germany), Paul Strau{\ss} (Institute for Astronomy and Astrophysics, Eberhard Karls University, Tuebingen, Germany)
https://arx…

Spectral analysis of HD 49798, a bright, hydrogen-deficient sdO-type donor star in an accreting X-ray binary
Context: HD 49798 is a bright ($m_{\rm V} = 8.287$), hot (effective temperature $T_{\rm eff} = 45000$ K) subdwarf star of the spectral type O (sdO). It is the only confirmed sdO-type mass-donor star of an X-ray binary that has a high-mass (1.28 $M_\odot$) white-dwarf or neutron-star primary with a spin period of only 13.2 s. Aims: Since a high-quality spectrum of HD 49798, obtained with the Tübingen Ultraviolet Echelle Spectrometer (TUES), that has never been analyzed before is available in th…

Deriving physical parameters of unresolved star clusters. IX. Sky background effects in the aperture photometry
Karolis Daugevi\v{c}ius, Rima Stonkut\.e, Eimantas Kri\v{s}\v{c}i\=unas, Erikas Cic\.enas, Vladas Vansevi\v{c}ius
https://arxiv.org/abs/2506.09622

Deriving physical parameters of unresolved star clusters. IX. Sky background effects in the aperture photometry
The aperture photometry method is a powerful tool that enables us to study large star cluster systems efficiently. However, its accuracy depends on various factors, including the stochasticity of the stellar initial mass function and variations in the sky background. Previously, in the eighth paper of this series, we established the best achievable limits of the aperture photometry method for star cluster studies in the local universe. The aim of this study is to determine how the sky backgroun…