PISMIS 6 and the F0 IA supergiant HD 74180

Details PISMIS 6 and the F0 IA supergiant HD 74180 PISMIS 6 and the F0 IA supergiant HD 74180

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..594f&link_type=abstract

The Astronomical Journal, vol. 108, no. 2, p. 594-599

Astronomy and Astrophysics

Astronomy

1

Early Stars, Open Clusters, Stellar Spectrophotometry, Supergiant Stars, Astronomical Photometry, Color-Magnitude Diagram, Electrophotometers

Scientific paper

New photoelectric UBV observations of stars in the open cluster Pismis 6 and existing photometry and spectroscopy of several nearby OB stars are used to determine the intrinsic properties of the luminous supergiant HD 74180 (F0 Ia). Thirty cluster members are identified in Pismis 6 and yield a distance modulus of (V0 - Mv) = 11.34 plus or minus 0.09 (s.e.) and mean reddening E(B - V) = 0.46 plus or minus 0.04 (s.d.). The cluster age is estimated to be 8 plus or minus 2 Myr. Pismis 6 appears to be part of a physical group that includes the F supergiant and the nearby OB stars. The position of HD 74180 in the theoretical HR diagram suggests it may be a lower-mass analogue of the hypergiant IRC+10420, which Jones et al. (ApJ, 411, 323 (1993)) have suggested is evolving blueward in the HR diagram from the red supergiant region, possibly on its way to becoming a Wolf-Rayet star.

Affiliated with

Also associated with

No associations

Rating

PISMIS 6 and the F0 IA supergiant HD 74180 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with PISMIS 6 and the F0 IA supergiant HD 74180, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PISMIS 6 and the F0 IA supergiant HD 74180 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1493624