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Bologna
March 26, 2017, 7:26 am
Mostly cloudy
Mostly cloudy
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real feel: 11°C
current pressure: 1020 mb
humidity: 87%
wind speed: 1 m/s WSW
sunrise: 7:07 am
sunset: 7:35 pm
 

SECCO 1: a very dark stellar system lost in Virgo

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Left panel: Hα images of the two bodies of SECCO 1 (projected separation ~6 kpc ) extracted from the MUSE data cube. Right panels: HST -ACS images of the same region. At the distance of the object 10 arcsec correspond to 825 pc.

Many models of structure formation within the Lambda-CDM cosmological paradigm predict the

…→ Read More: SECCO 1: a very dark stellar system lost in Virgo

Gaia16aye: the first binary microlensing event ever discovered towards the Galactic Plane

Image of Gaia16aye obtained at the 1.5m G.D. Cassini Telescope, Loiano.

On 2016-08-05 the 1.2 mag brightening of an otherwise quiet stellar source triggered the Gaia16aye Gaia Science Alert, nicknamed Ayers Rock (19:40:01.13 +30:07:53.4, J2000). The previous 22 Gaia detections of the source (starting from 2014-10-30) show no variability greater than 0.05m RMS. The initial spectrophotometric observations did not clarify the nature of the

…→ Read More: Gaia16aye: the first binary microlensing event ever discovered towards the Galactic Plane

Gaia Data Release 1

The Gaia spacecraft was launched on December 19th, 2013 to perform a 5-year long all-sky scanning survey that will provide exquisitely accurate astrometry (100 times better than Hipparcos) and photometry for about one billion of Galactic stars down to G ~20.7 (Gaia unfiltered band), and radial velocity for several millions of stars to

…→ Read More: Gaia Data Release 1

DDO68

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DDO 68 , una pulce di Galassia ma vorace

Un team internazionale di ricercatori guidato da Francesca Annibali, Cassini Fellowship presso l’Osservatorio Astronomico di Bologna dell’Istituto Nazionale di Astrofisica, ha dimostrato che anche una galassia nana di massa molto piccola è in grado di catturare

…→ Read More: DDO68

Giornate di Osservatorio

18 e 19 Febbraio 2016 Giornate di Osservatorio – Programma