We describe the structural, stellar population and gas properties of the nearest ultra diffuse galaxy discovered so far: UGC 2162 (z = 0.00392 {R}e,g=1.7(+/- 0...
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PublicationThe Nearest Ultra Diffuse Galaxy: UGC 2162
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PublicationThe Necklace: equatorial and polar outflows from the binary central star of the new planetary nebula IPHASX J194359.5+170901
IPHASX J194359.5+170901 is a new high-excitation planetary nebula with remarkable characteristics. It consists of a knotty ring expanding at a speed of 28 km s...
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PublicationThe neutron star transient and millisecond pulsar in M28: from sub-luminous accretion to rotation-powered quiescence
The X-ray transient IGR J18245-2452 in the globular cluster M28 contains the first neutron star (NS) seen to switch between rotation-powered and accretion...
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PublicationThe new 4-m robotic telescope
We present a project to build a 4-m-diameter telescope (New Robotic Telescope [NRT]) with fully robotic operation. The telescope will be sited at the...
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PublicationThe new carbon symbiotic star IPHAS J205836.43+503307.2
Aims: We are performing a search for symbiotic stars using IPHAS, the INT Hα survey of the northern Galactic plane, and follow-up observations. Methods...
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PublicationThe new orbital elements and properties of ɛ Persei
A detailed analysis of a large collection of electronic spectra from three observatories, together with radial velocities published earlier, were used to derive...
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PublicationThe NGC 346 massive star census. Nitrogen abundances for apparently single, narrow lined, hydrogen core burning B-type stars
Previous analyses of two large spectroscopic surveys of early-type stars in the Large Magellanic Cloud (LMC) have found an excess of nitrogen enriched B-type...
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PublicationThe Night Sky at the Calar Alto Observatory II: The Sky at the Near-infrared
We present the characterization of additional properties of the night sky at the Calar Alto observatory, following the study started by Sánchez et al. in 2007...
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PublicationThe Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey
The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data...