Search for planets with Carmenes successful
December 18th 2017
Since 2016, German and Spanish researchers are hunting for planets with the Carmenes spectrograph. They have now discovered their first star with an exoplanet.
The star is a so-called M-dwarf only about half as massive as the Sun, its planet with the name HD 147379b is slightly more massive than Neptune. HD 147379b orbits its star once every 86 days at a distance that is only a third of the distance between Earth and the Sun. At this location, the planet is located inside the so-called habitable zone where water could exist in liquid form. However, it is unlikely that life could develop on this planet because it probably has no solid surface.
Calar Alto Observatory will improve its instruments with co-financing of ERDF funds
November 22nd 2017
The Monitoring Commission of the agreement signed with the "Ministerio de Economía, Industria y Competitividad" for the execution of the "MIOCA-Mejora del Instrumental del Observatorio de Calar Alto" project, was set up.
The project’s budget of 1.129.098 €, will allow consolidate the competitiveness of Calar Alto Observatory.
The Spanish-German Astronomical Center (CAHA) has the purpose of the management, maintenance, operation and scientific exploitation of the Calar Alto Observatory, making it available to the international astronomical community, as well as giving the capacity and the infrastructure needed for carrying out astronomical observation programs and developing innovative concepts concerning instrumentation. Now, CAHA faces up an improvement of its instrumentation in order to continue at the forefront of the astronomical observation.
Polarized light from a brown dwarf: where lies the dust at play?
July 19th 2017
The brown dwarf 2MASS J04221413+1530525 shows linear polarization of its light which could be due to dust in its Jupiter-like atmosphere, or in the interstellar medium
Brown dwarfs, sometimes known as “failed stars”, fill the gap between low mass stars and giant gaseous planets. They are faint objects, difficult to study and, as such, some of their characteristics are not well known. An international team has searched for polarized light in a sample of brown dwarfs with the CAFOS instrument at Calar Alto observatory – a method which helps to know the properties of these objects –, and has found polarized light in one of them, although its poorly determined distance does not allow us to determine the exact cause of the polarization.
CARMENES instrument demonstrates its capacity for finding planets similar to Earth
October 4th 2017
CARMENES, a spectrograph that operates in both visible and infrared channels, operating at Calar Alto Observatory (Almería), study a three hundred stars sample in order to find similar to Earth planets.
The first results of its visible channel, derived from the study of seven planetary systems, show its perfect functioning.
CARMENES instrument, developed by a consortium of eleven institutions from Germany and Spain, and co-lead by the Instituto de Astrofísica de Andalucía (IAA-CSIC), with the participation of the Institut de Ciències de l’Espai (IEEE-CSIC) and the Centro de Astrobiología (CAB, CSIC-INTA), has been designed for searching earth like planets within the habitability zone or area that surrounds a star where the conditions allow the existence of liquid water. The first results, obtained with the Calar Alto Observatory 3.5m telescope and published today, analyze seven known planetary systems and proves its excellent performing.
Calar Alto Observatory has embarked on an ambitious project with the University of Peking for the study of black holes
May 18th 2017
60% of the time of the 2.2m telescope will be devoted to the study of supermassive black holes placed in active galaxies nuclei.
Calar Alto Observatory, the biggest astronomical observatory within mainland Europe, has signed an agreement with the University of Peking in order to develop, from the 2.2m telescope, an intensive study of supermassive black holes located in the central regions of the galaxies, which constitutes what are known as active galaxies nuclei, and are among the most energetic objects in the Universe.
New clues on the formation process of Milky Way-like galaxies
September 12th 2017
Researchers from the Theoretical Physics and Cosmos department of Granada University (UGR, Spain) lead a study which gives new details about the formation process of the structure of our galaxy, the Milky Way.This study is based on data obtained at Calar Alto.
Granada University astronomer Isabel Pérez lead a series of observational studies which show the distribution and characteristics of the stars in barred spiral galaxies like the Milky Way, giving new insights on the formation process of this kind of galaxies.
Rewinding stellar evolution: The last 400,000 years of mass loss from a star
April 11th 2017
The study of K4-37, a planetary nebula never studied in detail before, allows us to trace back the mass loss history of its last stages as a star
The study makes use of data from Calar Alto and San Pedro Martir (Mexico) observatories
Planetary Nebulae (hereafter PNe) are the last evolutionary phase of stars with initial masses between 0.8 and 8 solar masses (Msun). They appear as a compact central star (the remains of the progenitor star) surrounded by a bright shell of expanding gas, produced during the previous red giant phase, when the star blew away its external layers. In a few tens of thousand years, PNe disperse in the interstellar medium. Although more than 3,500 PNe are known to date in the Milky Way, many of them lack appropriate observations to place them in the general context of PN evolution. The study of K4-37, one of these less observed PNe, gives new hints to this context.
