SIMBAD references

2018ApJ...858...11M - Astrophys. J., 858, 11-11 (2018/May-1)

The near-infrared tip of the red giant branch. I. A calibration in the isolated dwarf galaxy IC 1613.

MADORE B.F., FREEDMAN W.L., HATT D., HOYT T.J., MONSON A.J., BEATON R.L., RICH J.A., JANG I.S., LEE M.G., SCOWCROFT V. and SEIBERT M.

Abstract (from CDS):

Based on observations from the FourStar near-infrared camera on the 6.5 m Baade-Magellan telescope at Las Campanas, Chile, we present calibrations of the JHK luminosities of stars defining the tip of the red giant branch (TRGB) in the halo of the Local Group dwarf galaxy IC 1613. We employ metallicity-independent (rectified) T-band magnitudes-constructed using J-, H-, and K-band magnitudes and both (J - H) and (J - K) colors to flatten the upward-sloping red giant branch tips as otherwise seen in their apparent color-magnitude diagrams. We describe and quantify the advantages of working at these particular near-infrared wavelengths, which are applicable to both the Hubble Space Telescope (HST) and the James Webb Space Telescope (JWST). We also note that these same wavelengths can be accessed from the ground for an eventual tie-in to Gaia for absolute astrometry and parallaxes to calibrate the intrinsic luminosity of the TRGB. Adopting the color terms derived from the IC 1613 data, as well as the zero points from a companion study of the Large Magellanic Cloud, whose distance is anchored to the geometric distances of detached eclipsing binaries, we find a true distance modulus of 24.32 ± 0.02 (statistical) ±0.05 mag (systematic) for IC 1613, which compares favorably with the recently published multi-wavelength, multi-method consensus modulus of 24.30 ± 0.05 mag by Hatt et al.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): distance scale - galaxies: distances and redshifts - galaxies: stellar content - infrared: stars - Magellanic Clouds - stars: Population II

VizieR on-line data: <Available at CDS (J/ApJ/858/11): table1.dat>

Status in Simbad:  could be processed

Simbad objects: 5

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2018ApJ...858...11M and select 'bookmark this link' or equivalent in the popup menu


2019.10.21-00:55:18

© Université de Strasbourg/CNRS

    • Contact