Lina Tomasella

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The orbits and physical parameters of three detached, double-lined A-F eclipsing binaries have been derived combining HP , VT , BT photometry from the Hipparcos/Tycho mission with 8500-8750 Å ground-based spectroscopy, mimicking the photometric+spectroscopic observations that should be obtained by GAIA, the approved Cornerstone 6 mission by ESA. This study(More)
We present the results of optical, near-infrared, and mid-infrared observations of M101 OT2015-1 (PSN J14021678+5426205), a luminous red transient in the Pinwheel galaxy (M101), spanning a total of 16 years. The light curve showed two distinct peaks with absolute magnitudes  M 12.4 r and  M 12 r , on 2014 November 11 and 2015 February 17, respectively.(More)
We report the discovery and characterization of a deeply eclipsingAMCVn-system,Gaia14aae (=ASSASN-14cn). Gaia14aae was identified independently by the All-Sky Automated Survey for Supernovae (ASAS-SN; Shappee et al.) and by the Gaia Science Alerts project, during two separate outbursts. A third outburst is seen in archival Pan-STARRS-1 (PS1; Schlafly et(More)
Internal kinematics, spectroscopic binaries and galactic motion are investigated for the trapezium system BD+001617 (which lies at the heart of the young open cluster Bochum 2) by means on 73 high resolution Echelle+CCD spectra secured over the period 1994-98. Two of the three O-type member stars are found to be binaries on close and highly eccentric orbits(More)
M. nicholl, S. J. Smartt, A. Jerkstrand, C. Inserra, M. McCrum, R. Kotak, M. Fraser, D. Wright, t.-W. Chen, K. Smith, D. R. Young, S. A. Sim, S. Valenti, D. A. howell, F. Bresolin, R. P. Kudritzki, J. L. tonry, M. E. huber, A. Rest, A. Pastorello, L. tomasella, E. Cappellaro, S. Benetti, S. Mattila, E. Kankare, t. Kangas, G. Leloudas, J. Sollerman, F.(More)
The orbit and physical parameters of the previously unsolved double-lined eclipsing binary V570 Per, discovered by the Hipparcos satellite, are derived using high resolution Echelle spectroscopy and B, V photoelectric photometry. The metallicity from χ analysis of the spectra is [M/H]=+0.02±0.03, and reddening from interstellar NaI and KI absorption lines(More)
Context. The Public European Southern Observatory Spectroscopic Survey of Transient Objects (PESSTO) began as a public spectroscopic survey in April 2012. PESSTO classifies transients from publicly available sources and wide-field surveys, and selects science targets for detailed spectroscopic and photometric follow-up. PESSTO runs for nine months of the(More)
We report photometric and spectroscopic observations of the optical transient LSQ13zm. Historical data reveal the presence of an eruptive episode (that we label as ‘2013a’) followed by a much brighter outburst (‘2013b’) three weeks later, that we argue to be the genuine supernova explosion. This sequence of events closely resemble those observed for SN(More)
We present the second data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity, surface gravity, and rotational velocity) of up to one million stars using the 6dF multi-object spectrograph on the 1.2-m UK Schmidt Telescope of the(More)
  • C. Barbarino, M. Dall’Ora, +32 authors D. Young
  • 2015
We present the results of a photometric and spectroscopic monitoring campaign of SN 2012ec, which exploded in the spiral galaxy NGC 1084, during the photospheric phase. The photometric light curve exhibits a plateau with luminosity L = 0.9 × 1042 erg s−1 and duration ∼90 d, which is somewhat shorter than standard Type II-P supernovae (SNe). We estimate the(More)