The nature of the cometary nebula 1548 C27

Details The nature of the cometary nebula 1548 C27 The nature of the cometary nebula 1548 C27

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...213..303v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 213, no. 1-2, April 1989, p. 303-309.

Astronomy and Astrophysics

Astrophysics

8

A Stars, Astronomical Spectroscopy, Infrared Photometry, Pre-Main Sequence Stars, Reflection Nebulae, H Lines, Star Formation, Stellar Envelopes, Visible Spectrum

Scientific paper

Results are presented on optical and near-IR photometry of cometary nebula 1548 C27, together with associated high and intermediate resolution spectroscopy of both the nebular core and jet outflow. Two IR sources were found, one of which, IRS 2, is clearly a reddened main-sequence star, the other, IRS 1, being a probable Herbig Ae/Be type central star with luminosity about 100 solar luminosities, distance about 0.9 kpc, and extinction about 5 mag. The spectroscopy of the nebular core shows evidence for both P-Cygni profiles, and a range of neutral and ionic line velocities consistent with an accelerated outflow with a terminal velocity greater than 700 km/sec. The spectroscopy of the jet outflow feature suggests a typical FWHM of about 70 km/sec, and a more-or-less constant line-of-sight velocity, suggesting little if any flow deceleration.

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