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HD 48979


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Photoelectric filter photometry of the flux depression at 5200 A in Ap-stars
A new photometric index was used to characterize the flux depression at5200 A in a photoelectric filter photometric study of a large number ofnormal A-stars, Ap-stars, Am-stars, and Hg-Mn-stars. The new index isdefined as a = g - (h + y)/2, where g and h are the brightnesses at 5240and 5020 A, respectively, measured by interference filters, and y is thebrightness measured with a Stromgren filter. The index reveals a markedcontrast between normal and peculiar stars.

On the variability of the peculiar A type star HD 49976.
Abstract image available at:http://adsabs.harvard.edu/abs/1975A&A....44..405M

Spectroscopic observations of stars in HII regions.
Not Available

Radial velocities of southern B stars determined at the Radcliffe observatory 6.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972MNRAS.158...85C&db_key=AST

Observations of stars in HII regions : spectral classification and UBVphotometry.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971AJ.....76..260C&db_key=AST

A Catalogue of H II Regions.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1959ApJS....4..257S&db_key=AST

Symmetric Galactic Nebulae.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1955ApJ...121..604J&db_key=AST

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Observation and Astrometry data

Constellation:Monoceros
Right ascension:06h45m57.75s
Declination:-07°20'20.2"
Apparent magnitude:7.118
Distance:189.753 parsecs
Proper motion RA:-2.1
Proper motion Dec:0.5
B-T magnitude:7.197
V-T magnitude:7.125

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 48979
TYCHO-2 2000TYC 4812-1487-1
USNO-A2.0USNO-A2 0825-03136350
HIPHIP 32407
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