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CO line observations of OH/IR stars in the inner Galactic Bulge: Characteristics of stars at the tip of the AGB
H. Olofsson, T. Khouri, B. A. Sargent +10
12CO and 13CO lines, as well as a mm-wave continuum, have been observed for a sample of 22 OH/IR stars in directions within 2 degrees of the Galactic Centre. Photometry data have b…
Molecular remnant of Nova 1670 (CK Vulpeculae): I. Properties and enigmatic origin of the gas
T. Kaminski, K. M. Menten, R. Tylenda +5
CK Vul erupted in 1670 and is considered a stellar-merger candidate. Its remnant contains a molecular component of surprisingly rich composition. We present interferometric line su…
IRAM and Gaia views of multi-episodic star formation in IC1396A: The origin and dynamics of the Class 0 protostar at the edge of an HII region
Aurora Sicilia-Aguilar, Nimesh Patel, Min Fang +3
(Abridged) IC1396A is a cometary globule containing the Class 0 source IC1396A-PACS-1. We use IRAM 30m and Gaia DR2 data to explore the star-formation history of IC1396A and invest…
Astronomical detection of a radioactive molecule 26AlF in a remnant of an ancient explosion
Tomasz Kamiński, Romuald Tylenda, Karl M. Menten +6
Decades ago, -ray observatories identified diffuse Galactic emission at 1.809 MeV originating from decays of an isotope of aluminium, Al, that has a mean-life time…
Submillimeter-wave emission of three Galactic red novae: cool molecular outflows produced by stellar mergers
T. Kaminski, W. Steffen, R. Tylenda +3
Red novae are optical transients erupting at luminosities typically higher than those of classical novae. Their outbursts are believed to be caused by stellar mergers. We present m…
The growth of carbon chains in IRC+10216 mapped with ALMA
M. Agundez, J. Cernicharo, G. Quintana-Lacaci +9
Linear carbon chains are common in various types of astronomical molecular sources. Possible formation mechanisms involve both bottom-up and top-down routes. We have carried out a…