Astronomy and Astrophysics – Astronomy
Scientific paper
May 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...215...51c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 215, no. 1, May 1989, p. 51-56. Research supported by the Universidad Nacional
Astronomy and Astrophysics
Astronomy
5
H Ii Regions, Infrared Astronomy, Pre-Main Sequence Stars, Stellar Spectra, Hertzsprung-Russell Diagram, High Dispersion Spectrographs, Near Infrared Radiation, Radio Sources (Astronomy), Stellar Coronas
Scientific paper
JHKLM photometry (obtained with the 2.1-m telescope of San Pedro Martir National Observatory in December 1986) and high-resolution 646-676-nm coude spectroscopy (obtained with the 2.2-m telescope at Calar Alto in January 1986) are reported for stars in the H II region Sh 2-252. The data are presented in tables, maps, and sample spectra and discussed in detail. Embedded radio source E is found to be a bright H-alpha knot with a smooth 8-km/sec velocity gradient; its second-brightest star, Sh 2-252b, is classified as a Herbig A0e star. Source C has a normal spectrum and is close to the emission-line star IRS 7, probably of Herbig type B9e.
Carlos Chavarria-K.
de Lara E.
Leitherer Cl.
Sanchez Olivier
Zickgraf Franz-Josef
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