Results 11 to 20 of about 60,471 (306)
Red Clump Stars in the Sagittarius Tidal Streams [PDF]
The Astronomical Journal, 2012 We have probed a section (l ~ 150, b ~ -60) of the trailing tidal arm of the Sagittarius dwarf spheroidal galaxy by identifying a sample of Red Clump stream stars.
Carrell, Kenneth +2 more
core +2 more sources
Variability in the Massive Open Cluster NGC 1817 from K2: A Rich Population of Asteroseismic Red Clump, Eclipsing Binary, and Main-sequence Pulsating Stars. [PDF]
Astron J, 2020 Sandquist EL +15 more
europepmc +3 more sources
Red Clump Stars – Further Improved Distance Indicator [PDF]
Highlights of Astronomy, 2002 AbstractThe ideal distance indicator would be a standard candle abundant enough to provide many examples within reach of parallax measurements and sufficiently bright to be seen out to Local Group galaxies. The red clump stars closely match this description.
P. Garnavich, K. Z. Stanek
openalex +2 more sources
Mapping the Chemodynamics of the Galactic Disk Using the LAMOST and APOGEE Red Clump Stars [PDF]
The Astrophysical Journal Supplement SeriesA detailed measurement is made of the metallicity distributions, kinematics, and dynamics of the thin and thick disks across a large disk volume (5.0 ≤ R ≤ 15.0 kpc and ∣ Z ∣ ≤ 3.0 kpc) by using the LAMOST–APOGEE red clump stars.
Weixiang Sun +3 more
doaj +2 more sources
Absolute magnitude calibration for red clump stars [PDF]
Astrophysics and Space Science, 2013 We combined the ($K_s$, $J-K_s$) data in Laney et al. (2012) with the $V$ apparent magnitudes and trigonometric parallaxes taken from the Hipparcos catalogue and used them to fit the $M_{K_s}$ absolute magnitude to a linear polynomial in terms of $V-K_s$ colour.
S. Karaali, S. Bilir, E. Yaz
openalex +5 more sources
Constraining the Galactic Bar Parameters with Red Clump Giants [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 We show that the small intrinsic spread in luminosities of red clump giants can be used to constrain the differences in the streaming motions of Galatic bulge stars on the near side and those on the far side.
Mao, Shude, Paczynski, Bohdan
core +2 more sources
Kinematics of Tycho-2 red giant clump stars [PDF]
Astronomy Letters, 2009 Based on the Ogorodnikov-Milne model, we analyze the proper motions of 95 633 red giant clump (RGC) stars from the Tycho-2 Catalogue. The following Oort constants have been found: A = 15.9+-0.2 km/s/kpc and B = -12.0+-0.2 km/s/kpc. Using 3632 RGC stars with known proper motions, radial velocities, and photometric distances, we show that, apart from the
V. V. Bobylev +3 more
+6 more sources
Theoretical expectations for clump red giants as distance indicators [PDF]
Highlights of Astronomy, 2000 AbstractVariations of ~ 0.4 mag are expected in the I-band absolute magnitude of red clump giants, , as a function of both stellar age and metallicity. This is the case regardless of some potential theoretical uncertainties. The quite large differences in mean ages and metallicities of clump stars among galaxies result in systematic changes (of up to ~
L. Girardi
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Kinematics and dynamics of Gaia red clump stars [PDF]
Astronomy & Astrophysics, 2020 In this study, we analyse the kinematics and dynamics of a homogeneous sample of red clump stars, selected from the second Gaia data release catalogue in the direction of the Galactic poles, at five different positions in the plane. The level of completeness of the sample at heights between 0.6 and 3.5 kpc was asserted through a comparison with the 2 ...
Salomon, Jean-Baptiste +4 more
+6 more sources
The Astrophysical Journal Letters, 2023 In this work, we studied the distribution of lithium abundances in giants as a function of stellar mass. We used a sample of 1240 giants common among Kepler photometric and LAMOST medium-resolution ( R ≈ 7500) spectroscopic survey fields.
Anohita Mallick +2 more
doaj +1 more source