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Spatially Resolved 3 micron Spectroscopy of Elias 1: Origin of Diamonds in Protoplanetary Disks
M. Goto, Th. Henning, A. Kouchi +8
We present spatially resolved 3 um spectra of Elias 1 obtained with an adaptive optics system. The central part of the disk is almost devoid of PAH emission at 3.3 um; it shows up…
Tycho Brahe's 1572 supernova as a standard type Ia explosion revealed from its light echo spectrum
Oliver Krause, Masaomi Tanaka, Tomonori Usuda +4
Type Ia supernovae (SNe Ia) are thermonuclear explosions of white dwarf stars in close binary systems. They play an important role as cosmological distance indicators and have led…
Absorption Line Survey of H3+ toward the Galactic Center Sources II. Eight Infrared Sources within 30 pc of the Galactic Center
Miwa Goto, T. Usuda, T. Nagata +7
Infrared absorption lines of H3+, including the metastable R(3,3)l line, have been observed toward eight bright infrared sources associated with hot and massive stars located in an…
The Cassiopeia A Supernova was of Type IIB
Oliver Krause, Stephan M. Birkmann, Tomonori Usuda +4
Cassiopeia A is one of the youngest supernova remnants known in the Milky Way and a unique laboratory for supernova physics. We present an optical spectrum of the Cassiopeia A supe…
A Search for NIR Molecular Hydrogen Emission in the CTTS LkHa 264 and the debris disk 49 Cet
A. Carmona, M. E van den Ancker, Th. Henning +3
We report on the first results of a search for H2 emission from protoplanetary disks using CRIRES, ESO's new VLT high resolution NIR spectrograph. We observed the CTTS LkHa 264 and…
A Search for Mid-Infrared Molecular Hydrogen Emission from Protoplanetary Disks
A. Carmona, M. E van den Ancker, Th. Henning +6
We observed the Herbig Ae/Be stars UX Ori, HD 34282, HD 100453, HD 101412, HD 104237 and HD 142666, and the T Tauri star HD 319139 and searched for H2 0-0 S(2) emission at 12.278 m…