- Home
- →
- Browsing by Subject
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing by Subject "Astronomical photometry"
Now showing items 41-60 of 60
-
(American Astronomical Society, 2001-11)A total of 2097 photometric observations in the BVI[subscript c] system are presented for 117 Cepheids located in the southern hemisphere. The main purpose of the photometry is to provide new epochs of maximum brightness ...
-
(Halifax, N.S. : Saint Mary's University, 1996)We have used CFHT observations in Cousins B and R to probe the structure of the supergiant elliptical galaxy NGC 6166 in Abell 2199. We utilize the isophotal and aperture photometry of nuclei B and C to search for evidence ...
-
(American Astronomical Society, 1985-07)Photoelectric photometry (UBV and some VRI) is presented for the close pair of open clusters Cr 394 and NGC 6716 and for the 6[d over dot]64 classical Cepheid BB Sgr. Based upon the photometric data and star counts, the ...
-
(Oxford University Press, 2013-06)Photometric observations obtained by the MOST satellite were used to characterize optical small-scale variability of the young stars FU Ori and Z CMa. Wavelet analysis for FU Ori reveals the possible existence ...
-
(Oxford University Press, 2011-03)In 2009 March the well-studied quasar, PG 0844+349, was discovered with Swift to be in an X-ray weak state. A follow-up XMM–Newton observation several weeks later generated a good-quality spectrum of the source, showing ...
-
(EDP Sciences S.A., 2011-09)Context. We present high-precision time-series photometry of the classical δ Scuti star HD 144277 obtained with the MOST (Microvariability and Oscillations of STars) satellite in two consecutive years. The observed ...
-
(EDP Sciences, 2013-04)Context. The internal structure of pre-main-sequence (PMS) stars is poorly constrained at present. This could change significantly through high-quality asteroseismological observations of a sample of such stars. Aims. We ...
-
(American Astronomical Society, 1993-03)We report UBV photometry for fields surrounding four long-period Cepheids in the Southern Milky Way. No potential early-type companions are detected around XY Car, which appears to be relatively isolated. However, an ...
-
(EDP Sciences, 2009-10)Context. Asteroseismology has great potential for the study of metal-poor stars due to its sensitivity to determine stellar ages. Solid detections of oscillation frequencies in stars with well constrained fundamental ...
-
(IOP Publishing Limited, 2012-11-01)The GJ 581 system has been amply studied since its discovery in 2005: the number of known planets in the system has increased and their orbital parameters are among the most precisely determined for radial-velocity-detected ...
-
(American Astronomical SocietyIOP Publishing, 2011-04-20)We compare the simultaneous 2007 space-based MOST photometry and ground-based radial velocity (RV) observations of the F5 star Procyon. We identify slow variations in the MOST data that are similar to those reported in the ...
-
Spectroscopy, MOST photometry, and interferometry of MWC 314: is it an LBV or an interacting binary? (Oxford University Press, 2016)MWC 314 is a bright candidate luminous blue variable (LBV) that resides in a fairly close binary system, with an orbital period of 60.753 [plus or minus] 0.003 d. We observed MWC 314 with a combination of optical spectroscopy, ...
-
(Oxford University Press, 2014-10-11)We present an analysis of the 2011 photometric observations of TW Hya by the MOST satellite; this is the fourth continuous series of this type. The large-scale light variations are dominated by a strong, quasi-periodic ...
-
(EDP Sciences, 2012-01)Approximately 14% of known Galactic open clusters possess absolute errors ≤20% as evaluated from n ≥ 3 independent distance estimates, and the statistics for age estimates are markedly worse. That impedes such diverse ...
-
(Oxford University Press, 2009-10)We present the results from a monitoring campaign of the Narrow-Line Seyfert 1 galaxy PG 1211+143. The object was monitored with ground-based facilities (UBVRI photometry; from 2007 February to July) and with Swift [X-ray ...
-
(Halifax, N.S. : Saint Mary's University, 1996)Surface photometry in B and R is presented for seven brightest cluster galaxies (BCGs) in poor clusters. The primary goal was to detect diffuse envelopes around the BCGs to determine if they are genuine cD galaxies, which ...
-
(Halifax, N.S. : Saint Mary's University, 1990)This thesis presents independently calibrated CCD surface photometry derived from 12 images of the shell galaxy NGC 2865 in the B, V, and R passbands. Short exposures were used to permit accurate sky subtraction. Mean ...
-
(Halifax, N.S. : Saint Mary's University, 1988)This thesis presents a stellar space density analysis in the galactic plane at l = 268 [degree sign]. The data consist of photographic UBV photometry for 2461 stars and MK spectral classifications for 1713 of these. A ...
-
(American Astronomical Society, 1978-03)The open clusters NGC 6604 and NGC 6704 have been studied with UBV photoelectric and photographic photometry, resulting in improved distance and color-magnitude diagrams. NGC 6604 is a very young (~4x 10 [supercript 6] yr) ...
-
(American Astronomical SocietyIOP Publishing, 2010-10-01)We explore the feasibility and limitations of using the 1.6 [micron]m bump as a photometric redshift indicator and selection technique, and use it to study the rest-frame H-band galaxy luminosity and stellar mass functions ...
Now showing items 41-60 of 60