Παρακαλούμε σημειώστε ότι σε περίπτωση δημοσίευσης άρθρου που χρησιμοποιεί τα δεδομένα του Αρίσταρχου θα πρέπει να ακολουθείτε τις παρακάτω οδηγίες:
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Credit “Aristarchos telescope” in published papers:
Publications based wholly or in part on data obtained at the Aristarchos telescope are required to carry the following Acknowledgment, primarily as a footnote to the title but, if such footnotes are not permitted by the journal, book, etc, then in the Acknowledgments section of the paper itself:
“Based on observations made with the 2.3m Aristarchos telescope, Helmos Observatory, Greece, which is operated by the Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing of the National Observatory of Athens, Greece.”
Πρόσφατες Δημοσιεύσεις
H2 molecular gas in the old planetary nebula NGC 3587
Ramos-Larios G., Guerrero M. A., Toalá J. A., Akras S., Fang X.
Deep optical study of the mixed-morphology supernova remnant G 132.7+1.3 (HB3)
We present optical ccd images of the large supernova remnant (SNR) G132.7 + 1.3 (HB3) covering its full extent for the first time, in the emission lines of H α+ [N II], [S II] and [O III], where new and known filamentary and diffuse structures are detected. These observations are supplemented by new low-resolution long-slit spectra and higher-resolution images in the same emission lines. Both the flux-calibrated images and spectra confirm that the optical emission originates from shock-heated gas since the [S II]/H α > 0.4.
Constraints on the structure and seasonal variations of Triton’s atmosphere from the 5 October 2017 stellar occultation and previous observations
A stellar occultation by Neptune's main satellite, Triton, was observed on 5 October 2017 from Europe, North Africa, and the USA. We derived 90 light curves from this event, 42 of which yielded a central flash detection. We aimed at constraining Triton's atmospheric structure and the seasonal variations of its atmospheric pressure since the Voyager 2 epoch (1989). We also derived the shape of the lower atmosphere from central flash analysis.
First deep images catalogue of extended IPHAS PNe
A significative fraction of all massive stars in the Milky Way move supersonically through their local interstellar medium (ISM), producing bow shock nebulae by wind-ISM interaction. The stability of these observed astrospheres around cool massive stars challenges precedent two-dimensional (magneto-)hydrodynamical simulations of their surroundings. We present three-dimensional magneto-hydrodynamical (3D MHD) simulations of the circumstellar medium of runaway M-type red supergiant stars moving with velocity v* = 50 km s−1 . We treat the stellar wind with ...
3D MHD astrospheres: applications to IRC-10414 and Betelgeuse
A significative fraction of all massive stars in the Milky Way move supersonically through their local interstellar medium (ISM), producing bow shock nebulae by wind-ISM interaction. The stability of these observed astrospheres around cool massive stars challenges precedent two-dimensional (magneto-)hydrodynamical simulations of their surroundings. We present three-dimensional magneto-hydrodynamical (3D MHD) simulations of the circumstellar medium of runaway M-type red supergiant stars moving with velocity v* = 50 km s−1 . We treat the stellar wind with ...
‘Ears’ formation in supernova remnants: overhearing an interaction history with bipolar circumstellar structures
A characteristic feature that is frequently found in nearby supernova remnants (SNRs) is the existence of two antisymmetric, local protrusions that are projected as two 'ears' in the morphology of the nebula. In this paper, we present a novel scenario for the 'ear' formation process,
Edge-on boxes with X-features as parts of galactic bars – NGC 352: A direct piece of observational evidence
This paper is a contribution to the discussion about whether the X/peanut component is part of the bar, or the bar itself. Our goal is to present a clear-cut case of a barred-spiral galaxy in which all structural components (i.e. the thick and thin part of the bar and the spiral arms) can be observed in its image and their dimensions directly measured there. We obtained deep images of the nearby galaxy NGC 352, which has an ideal inclination allowing us to observe all of the parts that compose its morphology, estimate their relative sizes, and determine the topology of the luminous matter...