Computer Science
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982phdt........42m&link_type=abstract
Thesis (PH.D.)--UNIVERSITY OF TORONTO (CANADA), 1982.Source: Dissertation Abstracts International, Volume: 44-03, Section: B, pa
Computer Science
8
Scientific paper
Broadband photometry has been obtained at J (1.25 (mu)m), H (1.65 (mu)m), and K (2.2 (mu)m) for a sample of Cepheids in the Large Magellanic Cloud, Small Magellanic Cloud, and in galactic clusters/associations. We have measured arbitrary-phase magnitudes for 43 LMC, 28 SMC, and 8 galactic Cepheids, enabling us to calibrate the J, H, and K Period-Luminosity (P-L) relations and obtain distances to the LMC and SMC based on J, H, K photometry. These distances are:. (UNFORMATTED TABLE FOLLOWS). LMC: (m-M)(,o) = 18('('m))42 + 0.67 * E(B-V),. SMC: (m-M)(,o) = 18('('m))94 + 0.67 * E(B-V). (TABLE ENDS). We illustrate, by comparison of the optical and infrared P-L relations, that the infrared is markedly less affected by extinction, temperature, duplicity, and metallicity, the net result being that P-L relations based on arbitrary -phase infrared magnitudes are competitive with those based on mean optical magnitudes. A comparison of the V, H, and (B-V) data for the LMC and SMC confirms the existence of a second parameter, believed to be temperature, causing correlated changes in V, H, and (B-V) and giving rise to the Period-Luminosity -Colour (P-L-C) relation. A comparison of the V and H data, after removing their log P and (B-V) dependences, reveals the presence of yet a third parameter. This parameter causes correlated changes, of approximately equal magnitude, in V and H. Differential reddening, combined with temperature, can qualitatively explain this effect but the slope of the relation appears anomalous.
No associations
LandOfFree
The Cepheid Distance Scale: a New Application for Infrared Photometry. 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 The Cepheid Distance Scale: a New Application for Infrared Photometry., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Cepheid Distance Scale: a New Application for Infrared Photometry. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1019978