Search Publications
ALMA-IMF. XII. Point-process mapping of 15 massive protoclusters
Galván-Madrid, R.; Cunningham, N.; Csengeri, T. +29 more
Context. A crucial aspect in addressing the challenge of measuring the core mass function (CMF), that is pivotal for comprehending the origin of the initial mass function (IMF), lies in constraining the temperatures of the cores.
Aims: We aim to measure the luminosity, mass, column density and dust temperature of star-forming regions imaged b…
The accretion burst of the massive young stellar object G323.46−0.08
Matter, A.; Eislöffel, J.; Stecklum, B. +10 more
Context. Accretion bursts from low-mass young stellar objects (YSOs) have been known for many decades. In recent years, the first accretion bursts of massive YSOs (MYSOs) have been observed. These phases of intense protostellar growth are of particular importance for studying massive star formation. Bursts of MYSOs are accompanied by flares of Cla…
Massive black holes in nuclear star clusters. Investigation with SRG/eROSITA X-ray data
Merloni, A.; Zhang, Y.; Arcodia, R. +4 more
Context. Massive black holes (MBHs) are typically hosted in the centres of massive galaxies but they appear to become rarer in lower mass galaxies, where nuclear star clusters (NSCs) frequently appear instead. The transition region, where both an MBH and NSC can co-exist, has been poorly studied to date and only a few dozen galaxies are known to h…
Detection of decayless oscillations in solar transition region loops
Guo, Mingzhe; Gao, Yuhang; Van Doorsselaere, Tom +1 more
Context. Decayless kink oscillations have been frequently observed in coronal loops, serving as a valuable diagnostic tool for the coronal magnetic field. Such oscillations have never before been reported in low-lying loops of the transition region (TR).
Aims: The aim of this study is to detect decayless kink oscillations in TR loops for the …
Exploring the ultra-hot Jupiter WASP-178b. Constraints on atmospheric chemistry and dynamics from a joint retrieval of VLT/CRIRES+ and space photometric data
Nagel, E.; Czesla, S.; Nortmann, L. +14 more
Despite recent progress in the spectroscopic characterization of individual exoplanets, the atmospheres of key ultra-hot Jupiters (UHJs) still lack comprehensive investigations. These include WASP-178b, one of the most irradiated UHJs known to date. We observed the dayside emission signal of this planet with CRIRES+ in the spectral K ba…
Detection of pulsed X-ray emission from the isolated neutron star candidate eRASSU J131716.9-402647
Haberl, F.; Pires, A. M.; Schwope, A. D. +1 more
The X-ray source
High-resolution APEX/LAsMA 12CO and 13CO (3-2) observation of the G333 giant molecular cloud complex. II. Survival and gravitational collapse of dense gas structures under feedback
Menten, K. M.; Wyrowski, F.; Liu, T. +4 more
Context. Feedback from young massive stars has an important impact on the star formation potential of their parental molecular clouds.
Aims: We investigate the physical properties of gas structures under feedback in the G333 complex using data of the 13CO J = 3-2 line observed with the LAsMA heterodyne camera on the APEX telescope.…
HdC and EHe stars through the prism of Gaia DR3. 3D distribution and Gaia's chromatic PSF effects
Tisserand, P.; Crawford, C. L.; Clayton, G. C. +3 more
Context. Upon its release the Gaia DR3 catalogue has led to tremendous progress in multiple fields of astronomy by providing the complete astrometric solution for nearly 1.5 billion sources.
Aims: We analysed the photometric and astrometric results for Hydrogen-deficient Carbon (HdC), Extreme Helium (EHe), and DYPer type stars to identify any…
Dwarf galaxies in the MATLAS Survey: Hubble Space Telescope observations of the globular cluster systems of 74 ultra-diffuse galaxies
Müller, Oliver; Duc, Pierre-Alain; Lim, Sungsoon +7 more
Ultra-diffuse galaxies (UDGs), characterised by their low surface brightness and large physical size, constitute a subclass of dwarf galaxies that challenge our current understanding of galaxy formation and evolution. In this paper, we probe the properties of 74 UDGs, identified in the MATLAS survey, based on a comprehensive study of their globula…
The robustness in identifying and quantifying high-redshift bars using JWST observations
Ho, Luis C.; Fang, Taotao; Yu, Si-Yue +1 more
Understanding the methodological reliability in identifying and quantifying high-redshift bars is essential for studying their evolution with the James Webb Space Telescope (JWST). We used nearby spiral galaxies to generate simulated images at various resolutions and signal-to-noise ratios, and obtained the simulated galaxy images observed in the …