Search Publications
Studying the ISM at ∼10 pc scale in NGC 7793 with MUSE. II. Constraints on the oxygen abundance and ionising radiation escape
Della Bruna, Lorenza; Östlin, Göran; Smith, Linda J. +11 more
Context. Feedback from massive stars affects the interstellar medium (ISM) from the immediate surroundings of the stars (parsec scales) to galactic (kiloparsec) scales. High-spatial resolution studies of H II regions are critical to investigate how this mechanism operates.
Aims: We study the ionised ISM in NGC 7793 with the MUSE instrument at…
Mass and density of the transiting hot and rocky super-Earth LHS 1478 b (TOI-1640 b)
Kuzuhara, M.; Tamura, M.; Kudo, T. +52 more
One of the main objectives of the Transiting Exoplanet Survey Satellite (TESS) mission is the discovery of small rocky planets around relatively bright nearby stars. Here, we report the discovery and characterization of the transiting super-Earth planet orbiting LHS 1478 (TOI-1640). The star is an inactive red dwarf (J ~ 9.6 mag and spectral type …
Rotation periods for cool stars in the open cluster NGC 3532. The transition from fast to slow rotation
Strassmeier, K. G.; Barnes, S. A.; James, D. J. +1 more
Context. A very rich cluster intermediate in age between the Pleiades (150 Myr) and the Hyades (600 Myr) is needed to probe the rotational evolution, especially the transition between fast and slow rotation that occurs between the two ages.
Aims: We study the rich 300 Myr-old open cluster NGC 3532 to probe this important transition and to pro…
CAPOS: The bulge Cluster APOgee Survey. I. Overview and initial ASPCAP results
Minniti, D.; Zoccali, M.; Rojas-Arriagada, A. +39 more
Context. Bulge globular clusters (BGCs) are exceptional tracers of the formation and chemodynamical evolution of this oldest Galactic component. However, until now, observational difficulties have prevented us from taking full advantage of these powerful Galactic archeological tools.
Aims: CAPOS, the bulge Cluster APOgee Survey, addresses thi…
Physical properties of brightest cluster galaxies up to redshift 1.80 based on HST data
Durret, F.; Márquez, I.; Chu, A.
Context. Brightest cluster galaxies (BCGs) grow by accreting numerous smaller galaxies, and can be used as tracers of cluster formation and evolution in the cosmic web. However, there is still controversy regarding the main epoch of formation of BCGs; some authors believe they already formed before redshift z = 2, while others find that they are s…
The VISCACHA survey. III. Star clusters counterpart of the Magellanic Bridge and Counter-Bridge in 8D
Geisler, D.; Bica, E.; Barbuy, B. +15 more
Context. The interactions between the Small and Large Magellanic Clouds (SMC and LMC) created the Magellanic Bridge; a stream of gas and stars pulled out of the SMC towards the LMC about 150 Myr ago. The tidal counterpart of this structure, which should include a trailing arm, has been predicted by models but no compelling observational evidence h…
Physics of ULIRGs with MUSE and ALMA: The PUMA project. I. Properties of the survey and first MUSE data results
Maiolino, R.; Colina, L.; Perna, M. +8 more
Context. Ultraluminous infrared galaxies (ULIRGs) are characterised by extreme starburst (SB) and active galactic nucleus (AGN) activity, and are therefore ideal laboratories for studying the outflow phenomena and their feedback effects. We have recently started a project called Physics of ULIRGs with MUSE and ALMA (PUMA), which is a survey of 25 …
SLITRONOMY: Towards a fully wavelet-based strong lensing inversion technique
Starck, J. -L.; Courbin, F.; Joseph, R. +2 more
Strong gravitational lensing provides a wealth of astrophysical information on the baryonic and dark matter content of galaxies. It also serves as a valuable cosmological probe by allowing us to measure the Hubble constant independently of other methods. These applications all require the difficult task of inverting the lens equation and simultane…
Location and energetics of the ultra-fast outflow in PG 1448+273
Piconcelli, E.; Tombesi, F.; Middei, R. +3 more
Context. Ultra-fast outflows (UFOs) are the most powerful disk-driven winds in active galactic nuclei (AGNs). Theoretical and observational evidence shows that UFOs play a key role in the AGN feedback mechanism. The mechanical power of the strongest UFOs may be enough to propagate the feedback to the host galaxies and ultimately shape the AGN-gala…
X-ray-induced chemistry of water and related molecules in low-mass protostellar envelopes
Walsh, Catherine; Bosman, Arthur D.; Nomura, Hideko +2 more
Context. Water is a key molecule in star- and planet-forming regions. Recent water line observations toward several low-mass protostars suggest low water gas fractional abundances (<10−6 with respect to total hydrogen density) in the inner warm envelopes (r < 102 au). Water destruction by X-rays is thought to influence …