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A way to deal with the fringe-like pattern in VIMOS-IFU data

(2012)

Authors:

Carina Lagerholm, Harald Kuntschner, Michele Cappellari, Davor Krajnovic, Richard McDermid, Marina Rejkuba
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A systematic variation of the stellar initial mass function in early-type galaxies

(2012)

Authors:

Michele Cappellari, Richard M McDermid, Katherine Alatalo, Leo Blitz, Maxime Bois, Frederic Bournaud, M Bureau, Alison F Crocker, Roger L Davies, Timothy A Davis, PT de Zeeuw, Pierre-Alain Duc, Eric Emsellem, Sadegh Khochfar, Davor Krajnovic, Harald Kuntschner, Pierre-Yves Lablanche, Raffaella Morganti, Thorsten Naab, Tom Oosterloo, Marc Sarzi, Nicholas Scott, Paolo Serra, Anne-Marie Weijmans, Lisa M Young
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The Gemini NICI Planet-Finding Campaign: Discovery of a Multiple System Orbiting the Young A Star HD 1160

ArXiv 1202.2854 (2012)

Authors:

Eric L Nielsen, Michael C Liu, Zahed Wahhaj, Beth A Biller, Thomas L Hayward, Alan Boss, Brendan Bowler, Adam Kraus, Evgenya L Shkolnik, Matthias Tecza, Mark Chun, Fraser Clarke, Laird M Close, Christ Ftaclas, Markus Hartung, Jared R Males, I Neill Reid, Andrew J Skemer, Silvia HP Alencar, Adam Burrows, Elisabethe de Gouveia Dal Pino, Jane Gregorio-Hetem, Marc Kuchner, Niranjan Thatte, Douglas W Toomey

Abstract:

We report the discovery by the Gemini NICI Planet-Finding Campaign of two low-mass companions to the young A0V star HD 1160 at projected separations of 81 +/- 5 AU (HD 1160 B) and 533 +/- 25 AU (HD 1160 C). VLT images of the system taken over a decade for the purpose of using HD 1160 A as a photometric calibrator confirm that both companions are physically associated. By comparing the system to members of young moving groups and open clusters with well-established ages, we estimate an age of 50 (+50,-40) Myr for HD 1160 ABC. While the UVW motion of the system does not match any known moving group, the small magnitude of the space velocity is consistent with youth. Near-IR spectroscopy shows HD 1160 C to be an M3.5 +/- 0.5 star with an estimated mass of 0.22 (+0.03,-0.04) M_Sun, while NIR photometry of HD 1160 B suggests a brown dwarf with a mass of 33 (+12,-9) M_Jup. The very small mass ratio (0.014) between the A and B components of the system is rare for A star binaries, and would represent a planetary-mass companion were HD 1160 A to be slightly less massive than the Sun.
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The SAURON project – XX. The Spitzer [3.6] − [4.5] colour in early-type galaxies: colours, colour gradients and inverted scaling relations

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 419:3 (2012) 2031-2053

Authors:

Reynier F Peletier, Elif Kutdemir, Guido van der Wolk, Jesús Falcón-Barroso, Roland Bacon, Martin Bureau, Michele Cappellari, Roger L Davies, P Tim de Zeeuw, Eric Emsellem, Davor Krajnović, Harald Kuntschner, Richard M McDermid, Marc Sarzi, Nicholas Scott, Kristen L Shapiro, Remco CE van den Bosch, Glenn van de Ven
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Simulations of binary galaxy mergers and the link with Fast Rotators, Slow Rotators, and Kinematically Distinct Cores

(2012)

Authors:

Maxime Bois, Eric Emsellem, Frédéric Bournaud, Katherine Alatalo, Leo Blitz, Martin Bureau, Michele Cappellari, Roger L Davies, Timothy A Davis, PT de Zeeuw, Pierre-Alain Duc, Sadegh Khochfar, Davor Krajnović, Harald Kuntschner, Pierre-Yves Lablanche, Richard M McDermid, Raffaella Morganti, Thorsten Naab, Tom Oosterloo, Marc Sarzi, Nicholas Scott, Paolo Serra, Anne-Marie Weijmans, Lisa M Young
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