SIMBAD references

2002ApJ...572L.161R - Astrophys. J., 572, L161-L164 (2002/June-3)

Looking for pure rotational H2 emission from protoplanetary disks.

RICHTER M.J., JAFFE D.T., BLAKE G.A. and LACY J.H.

Abstract (from CDS):

We report on a limited search for pure rotational molecular hydrogen emission associated with young, pre-main-sequence stars. We looked for H2 v=0, J=3⟶1 and 4⟶2 emission in the mid-infrared using the Texas Echelon Cross Echelle Spectrograph at NASA's 3 m Infrared Telescope Facility. The high spectral and spatial resolutions of our observations lead to more stringent limits on narrow-line emission close to the source than previously achieved. One star, AB Aur, shows a possible (2 σ) H2 detection, but further observations are required to make a confident statement. Our nondetections suggest that a significant fraction, perhaps all, of previously reported H2 emission toward these objects could be extended on scales of 5" or more.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - Infrared: Stars - Stars: Planetary Systems: Protoplanetary Disks - Stars: Pre-Main-Sequence

Simbad objects: 10

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2019.09.17-09:39:04

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