Search Publications

Response to "Stray-light correction in 2D spectroscopy" by R. Schlichenmaier and M. Franz

Scharmer, G. B.

We discuss a recent paper by Schlichenmaier & Franz (SF; 2013, A&A, 555, A84), in which the claim is made that the penumbral dark downflows detected for the first time with the Swedish 1-m Solar Telescope (SST) by Scharmer et al. and Joshi et al. could be produced by overcompensation for straylight. We show that the analysis of SF is funda…

Analysing weak orbital signals in Gaia data

Lucy, L. B.

Anomalous orbits are found when minimum-χ² estimation is applied to synthetic Gaia data for orbits with astrometric signatures comparable to the single-scan measurement error (Pourbaix 2002, A&A, 385, 686). These orbits are nearly parabolic, edge-on, and their major axes align with the line-of-sight to the observer. Such orbits viol…

Star forming regions linked to RCW 78 and the discovery of a new IR bubble

Rubio, M.; Firpo, V.; Cappa, C. E. +2 more

Aims: With the aim of investigating the presence of molecular and dust clumps linked to two star forming regions identified in the expanding molecular envelope of the stellar wind bubble RCW 78, we analyzed the distribution of the molecular gas and cold dust.
Methods: To accomplish this study we performed dust continuum observations at 8…

Discovering a misaligned CO outflow related to the red MSX source G034.5964-01.0292

Rubio, M.; Ortega, M. E.; Paron, S. +1 more

Aims: The red MSX source G034.5964-01.0292 (MSXG34), catalogued as a massive young stellar object, was observed in molecular lines with the aim of discovering and studying molecular outflows.
Methods: We mapped a region of 3'× 3' centred at MSXG34 using the Atacama Submillimeter Telescope Experiment in the ¹²CO J = 3-2 and HCO…

Integrated spectroscopy of the Herschel Reference Survey (Corrigendum). The spectral line properties of a volume-limited, K-band-selected sample of nearby galaxies

Buat, V.; Boselli, A.; Cortese, L. +2 more

Polarisation observations of H₂O J_K-1 K₁ = 5₃₂ - 4₄₁ 620.701 GHz maser emission with Herschel/HIFI in Orion KL

Menten, K. M.; Morris, P.; Teyssier, D. +9 more

Context. The high intensities and narrow bandwidths exhibited by some astronomical masers make them ideal tools for studying star-forming giant molecular clouds. The water maser transition J_K-1K1 = 5₃₂-4₄₁ at 620.701 GHz can only be observed from above Earth's strongly absorbing atmosphere; it…

Probing the evolution of galaxy clusters with the SZ effect

Lapi, A.; Cavaliere, A.

In galaxy clusters the thermal Sunyaev-Zel'dovich (SZ) effect from the hot intracluster medium (ICM) provides a direct, self-contained measure of the pressure integrated over crossing lines of sight, that is intrinsically independent of redshift and well suited for evolutionary studies. We show in detail how the size of the effect and its pattern …