SKY-MAP.ORG

Getting Started

To Survive in the Universe

HD 90512

Contents

Images
Related articles
Related links
Groups

Images

Upload your image

DSS Images Other Images

Related articles

First radial velocities for 146 bright F- and G-type stars We have obtained an average of 5.7 radial velocities for 146 northernstars of types F and G (all luminosity classes) listed in 'A Supplementto the Bright Star Catalogue' as having no previously known radialvelocity measures. Those were obtained with charge coupled devices(CCDs) and a cross-correlation technique; the intrinsic velocityaccuracy, based on stars of apparently constant velocity, is probablyless than +/- 0.3 km/s per mean. Of those stars 14% are newly discoveredSB2 stars. The prevelance of rapid profile variations (in minutes orhours) in most of the broad-lined F-type stars makes it difficult toobtain accurate measures for them.
Einstein Observatory magnitude-limited X-ray survey of late-type giant and supergiant stars Results are presented of an extensive X-ray survey of 380 giant andsupergiant stars of spectral types from F to M, carried out with theEinstein Observatory. It was found that the observed F giants orsubgiants (slightly evolved stars with a mass M less than about 2 solarmasses) are X-ray emitters at the same level of main-sequence stars ofsimilar spectral type. The G giants show a range of emissions more than3 orders of magnitude wide; some single G giants exist with X-rayluminosities comparable to RS CVn systems, while some nearby large Ggiants have upper limits on the X-ray emission below typical solarvalues. The K giants have an observed X-ray emission level significantlylower than F and F giants. None of the 29 M giants were detected, exceptfor one spectroscopic binary.
Final catalogue of 229 photometric standards in UBV system near the selected areas 1-115 Not Available
Observations of lithium dilution and rotational velocity decay in F and G giant stars. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1975ApJ...195..649A&db_key=AST
Strong-Cyanogen Stars: Photometry and Kinematics Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1971ApJ...165..561J&db_key=AST
MK classifications for F and G-type stars. I. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1969AJ.....74..916H&db_key=AST
The corrected magnitudes and colours of 278 stars near S.A. 1-139 in the UBV system Not Available
Fifty standard stars for yellow and blue magnitudes in the UBV system Not Available

Submit a new article

Related links

- No Links Found -

Submit a new link

Member of following groups:

Observation and Astrometry data

Constellation:	しし座
Right ascension:	10^h27^m12.23^s
Declination:	+11Â°19'01.5"
Apparent magnitude:	6.632
Distance:	115.875 parsecs
Proper motion RA:	-37.8
Proper motion Dec:	15.8
B-T magnitude:	7.729
V-T magnitude:	6.723

Catalogs and designations:

Proper Names	(Edit)
HD 1989	HD 90512
TYCHO-2 2000	TYC 841-433-1
USNO-A2.0	USNO-A2 0975-06496044
HIP	HIP 51179

→ Request more catalogs and designations from VizieR