Search Publications
Emission-line-selected galaxies at z = 0.6-2 in GOODS South: Stellar masses, SFRs, and large-scale structure
Milvang-Jensen, B.; Fynbo, J. P. U.; Christensen, L. +7 more
We have obtained deep NIR narrow and broad (J and Y) band imaging data of the GOODS-South field. The narrow band filter is centered at 1060 nm corresponding to redshifts z = 0.62,1.15,1.85 for the strong emission lines Hα, [Oiii]/Hβ and [Oii], respectively. From those data we extract a well defined sample (M(AB) = 24.8 in the narrow band) of objec…
Multi-frequency study of the newly confirmed supernova remnant MCSNR J0512-6707 in the Large Magellanic Cloud
Haberl, F.; Filipović, M. D.; Maggi, P. +5 more
Aims: We present a multi-frequency study of the supernova remnant MCSNR J0512-6707 in the Large Magellanic Cloud.
Methods: We used new data from XMM-Newton to characterise the X-ray emission and data from the Australian Telescope Compact Array, the Magellanic Cloud Emission Line Survey, and Spitzer to gain a picture of the environment in…
Time variations of narrow absorption lines in high resolution quasar spectra
York, D. G.; Péroux, C.; Bergeron, J. +2 more
Aims: We have searched for temporal variations of narrow absorption lines in high resolution quasar spectra. A sample of five distant sources were assembled, for which two spectra are available, either VLT/UVES or Keck/HIRES, which were taken several years apart.
Methods: We first investigate under which conditions variations in absorpti…
Physical properties of the extreme Centaur and super-comet candidate 2013 AZ60
Pál, A.; Szabó, Gy. M.; Acosta-Pulido, J. +12 more
We present estimates of the basic physical properties including size and albedo of the extreme Centaur 2013 AZ60. These properties have been derived from optical and thermal infrared measurements. Our optical measurements revealed a probable full period of ≈9.4 h with a shallow amplitude of 4.5%. By combining optical brightness informat…
XMM-Newton observation of SNR J0533-7202 in the Large Magellanic Cloud
Haberl, F.; Filipović, M. D.; Maggi, P. +5 more
Aims: We present an X-ray study of the supernova remnant SNR J0533-7202 in the Large Magellanic Cloud (LMC) and determine its physical characteristics based on its X-ray emission.
Methods: We observed SNR J0533-7202 with XMM-Newton (background flare-filtered exposure times of 18 ks EPIC-pn and 31 ks EPIC-MOS1, EPIC-MOS2). We produced X-r…
GOODS-Herschel: identification of the individual galaxies responsible for the 80-290 µm cosmic infrared background
Magnelli, B.; Elbaz, D.; Popesso, P. +14 more
Aims: We propose a new method of pushing Herschel to its faintest detection limits using universal trends in the redshift evolution of the far infrared over 24 µm colours in the well-sampled GOODS-North field. An extension to other fields with less multi-wavelength information is presented. This method is applied here to raise the contr…
Exploration of quasars with the Gaia mission
Wambsganss, Joachim; Proft, Svea
We analyze the opportunities in and limits to investigating quasars with the Gaia satellite by studying Gaia's low- and high-resolution quasar spectra, with consideration of their signal-to-noise ratios. Furthermore, we explore bright quasars from the Sloan Digital Sky Survey with broad emission lines (BELs) redshifted into the spectral range of G…
Herschel-PACS observations of discs in the η Chamaeleontis association
Dent, W. R. F.; Kamp, I.; Montesinos, B. +6 more
Context. Protoplanetary discs are the birthplace of planets. Studying protoplanetary discs is the key to constraining theories of planet formation. By observing dust and gas in associations at different ages we can study the evolution of these discs, their clearing timescales, and their physical and geometrical properties.The stellar association η…
Total mass of six quiescent prominences estimated from their multi-spectral observations
Heinzel, P.; Golub, L.; Schwartz, P. +4 more
Context. Total masses of six solar prominences were estimated using prominence multi-spectral observations (in EUV, X-rays, Hα, and Ca ii H). The observations were made during the observing campaign from April through June 2011.
Aims: The aim of the work was to apply a complex method for the prominence mass estimations that can be used later …
Detection of Yarkovsky acceleration in the context of precovery observations and the future Gaia catalogue
Desmars, J.
Context. The Yarkovsky effect is a weak non-gravitational force leading to a small variation of the semi-major axis of an asteroid. Using radar measurements and astrometric observations, it is possible to measure a drift in semi-major axis through orbit determination.
Aims: This paper aims to detect a reliable drift in semi-major axis of near…