YEBES OBSERVATORY
A Spanish Scientific and Technical Infrastructure

Single-dish observed proposals for the 40m telescope in2025

Proposal ID Period (*) Time (h) Title PI
25A002 25A 144.0 SiO maser monitoring in post-AGB disks. Part II Iván Gallardo Cava
25A003 25A 2.0 Glycolamide survey towards dense cores in the Orion B9 filament Oskari Miettinen
25A004 25A 27.2 A Q-band line survey towards supernova remnant W28 Tianyu Tu
25A005 25A 39.0 Studies on the inheritance of large carbon species to the next-generation star-forming regions -a case study for WR140- Kotomi Taniguchi
25A006 25A 53.9 Simultaneous measurements on the isotope ratios of 12C/13C, 14N/15N and 18O/17O in our Galaxy Jialiang Chen
25A008 25A 45.0 Towards Tracking Binary SMBH Orbits Using Global K/Q/W Simultaneous VLBI Hyunwook Ro
25A010 25A 8.0 Linking the fragmentation of clumps to the evolutionary stages Han-Tsung Lee
25A012 25A 68.7 From Droplets to Dense Cores - a Chemical and Kinematic Analysis of Future Star Formation in the Taurus Molecular Cloud Lucille Steffes
25A013 25A 14.0 Searching for DCN 1-0, DNC 1-0 and DCO+ 1-0 in early-stage massive star-forming regions Yuqiang li
25A014 25A 46.1 Mapping DCN 1-0, DNC 1-0 and DCO+ 1-0 in late-stage massive star-forming regions Yuqiang li
25A015 25A 19.2 Explore the existence of DCO+ and N2D+ on large scales at low temperatures in the residual envelope in Orion KL Yuqiang li
25A018 25A 64.8 Sulphur isotopic fractionation in low-mass star-forming regions Gisela Esplugues
25A019 25A 217.8 Is the widely-distributed narrow SiO tracing different molecular cloud formation scenarios? Wonju Kim
25A020 25A 45.0 Constraining gas and grain sulfur chemistry in star forming regions Angèle Taillard
25A024 25A 30.0 On the origin of the extended velocity features in the Milky Way (resubmission) Yan Gong
25A025 25A 200.0 Where and when are PAHs formed in evolved stars? Jose Cernicharo
25A026 25A 110.0 Exploration of the diffuse interstellar gas composition : a confirmation gerin
25A028 25A 10.0 Accurate measurements of the atmospheric spectrum accessible to the Yebes-40m for model improvements Juan Ramón Pardo Carrión
25A029 25A 45.0 A high-sensitivity molecular spectral survey of young stellar objects at 7 mm: a pilot study Pablo Rivière
25A030 25A 48.4 Investigatinting the chemical composition evolution of high-mass star-forming regions Jialiang Chen

Number of proposals this year: 20
Total of hours observed this year: 1238.1

(*) Period:
A: First semestre (1st Feb 2025 - 31st Jul 2025).
B: Second semestre (1st Aug 2025 - 31st Jan 2026).
D: Director's Discretionary Time (1st Feb 2025 - 31st Jan 2026).