NA Levenson,JR Graham,IS McLean et al.
NA Levenson et al.
We present high-resolution spectroscopy and images of a photodissociation region (PDR) in M16 obtained during commissioning of the near-infrared spectrometer (NIRSPEC) on the Keck II telescope. PDRs play a significant role in regulating sta...
DF Figer,EE Becklin,IS McLean et al.
DF Figer et al.
We present moderate- (R approximately 2700) and high-resolution (R approximately 22,400) 2.0-2.4 µm spectroscopy of the central 0.1 arcsec2 of the Galaxy obtained with the facility near-infrared spectrometer (NIRSPEC) for the Keck II teles...
J-Band Infrared Spectroscopy of a Sample of Brown Dwarfs Using NIRSPEC on Keck II [0.03%]
应用凯克二号的NIRSPEC进行J-波段红外光谱观测棕色矮星样本
IS McLean,MK Wilcox,EE Becklin et al.
IS McLean et al.
Near-infrared spectroscopic observations of a sample of very cool, low-mass objects are presented with higher spectral resolution than in any previous studies. Six of the objects are L dwarfs, ranging in spectral class from L2 to L8/9, and ...
I Song I,J Caillault,Barrado Y Navascués D et al.
I Song I et al.
We have estimated the ages of eight late-type Vega-like stars by using standard age-dating methods for single late-type stars, e.g., location on the color-magnitude diagram, Li lambda6708 absorption, Ca ii H and K emission, X-ray luminosity...
DW Koerner,EL Jensen,KL Cruz et al.
DW Koerner et al.
We present subarcsecond thermal infrared imaging of HD 98800, a young quadruple system composed of a pair of low-mass spectroscopic binaries separated by 0&farcs;8 (38 AU), each with a K-dwarf primary. Images at wavelengths ranging from 5 t...
A Broad 22 Micron Emission Feature in the Carina Nebula H ii Region [0.03%]
Carina 星云HII区的宽22微米发射线特征
KW Chan,T Onaka
KW Chan
We report the detection of a broad 22 µm emission feature in the Carina Nebula H ii region by the Infrared Space Observatory (ISO) short-wavelength spectrometer. The feature shape is similar to that of the 22 µm emission feature of newly ...
Chandra Observations of the Crab-like Supernova Remnant G21.5-0.9 [0.03%]
Crab类超新星遗迹G21.5-0.9的钱德拉观测结果
P Slane,Y Chen,NS Schulz et al.
P Slane et al.
Chandra observations of the Crab-like supernova remnant G21.5-0.9 reveal a compact central core and spectral variations indicative of synchrotron burn-off of higher energy electrons in the inner nebula. The central core is slightly extended...
J English,AR Taylor,SY Mashchenko et al.
J English et al.
The Dominion Radio Astrophysical Observatory's Synthesis Telescope provides the highest resolution data (1&arcmin; and 0.82 km s-1) to date of an H i worm candidate. Observed as part of the Canadian Galactic Plane Survey, mushroom-shaped GW...
BE Schaefer
BE Schaefer
The galactic environment of gamma-ray bursts can provide good evidence about the nature of the progenitor system, with two old arguments implying that the burst host galaxies are significantly subluminous. New data and new analysis have now...
The Discovery of an Embedded Cluster of High-Mass Stars near SGR 1900+14 [0.03%]
临近SGR 1900+14的高.mass星团的发现
FJ Vrba,AA Henden,CB Luginbuhl et al.
FJ Vrba et al.
Deep I-band imaging to I approximately 26.5 of the soft gamma-ray repeater SGR 1900+14 region has revealed a compact cluster of massive stars located only a few arcseconds from the fading radio source thought to be the location of the soft ...