Aims. We analyze the clustering of galaxy clusters in a large contiguous sample, the Constrain Dark Energy with X-ray (CODEX) sample. We construct a likelihood for cosmological parameters by comparing the measured clustering signal and a theoretical prediction, and use this to obtain parameter constraints. Methods. We measured the three multipole

Chlorine (Cl) is a chemical element of the group of the halogens and is between the 17th and the 20th most abundant elements in the Solar System. It is thought to be produced from the capture of a proton or neutron by specific alpha-element isotopes during both hydrostatic and explosive oxygen burning, though some contribution may come from Type Ia

Planetary NebulAE(PNe) are known to host an energetic radiation environment that does not avoid the simultaneous presence of different types of molecules and single atoms. For this reason, PNe appear to be a unique laboratory where simple and complex molecules coexist. We will present our recent very sensitive and high-resolution mm observations of

Massive stars play a pivotal role in shaping the Universe. However, comparisons between observational data and theoretical models of massive stars have given rise to long-standing and new discrepancies that have questioned our understanding of these objects. A main uncertainty arises from the overdensity of B-type supergiants (BSGs) located beyond

MUDEHaR is a multi-epoch photometric survey with two narrow filters in Hα and the calcium triplet window that uses T80Cam at the JAST80 telescope at Javalambre spanish astronomical observatory. It is obtaining 50 epochs/year per field for 20 fields in the Galactic disk, each of two square degrees, for a total of 40 square degrees. Focused on

MEGARA is a fiber-fed spectrograph on the 10.4m Gran Telescopio CANARIAS, offering integral field and multi-object spectroscopy with spectral resolutions of R FWHM ∼ 6{,}000, 12{,}000, and 20{,}000. Our team is developing MEGASTAR, an empirical stellar spectral library based on observations from MEGARA. The goal of MEGASTAR is to provide stellar