Index of /ogle/ogle4/TRGB

	Name	Last modified	Size	Description
	Parent Directory		-
	LMC.DEEP_19_0_5_0_15.dat	2025-06-26 21:04	1.6G
	README	2025-06-26 21:55	2.1K
	SMC.DEEP_19_0_5_0_15.dat	2025-06-26 21:37	374M

This directory contains LMC and SMC deep photometry and interstellar
reddening data used in studies of the TRGB calibration in the paper:

The Ultimate I-band Calibration of the TRGB Standard Candle

by A. Udalski, D.M. Skowron, J. Skowron, M.K. Szymański, I.Soszyński,
P. Pietrukowicz, P. Mróz, R. Poleski, S. Kozłowski, K. Ulaczyk,
K. Rybicki, P. Iwanek, M. Gromadzki, M. Wrona, M. Ratajczak and
M.J. Mróz

arXiv:2506.xxxxx

The directory structure is as follows:

README                        - this file

LMC.DEEP_19_0_5_0_15.dat      - OGLE-IV deep photometry of the LMC stars trimmed to I < 19 mag, (V-I) > 0.5, E(V-I) < 0.15
SMC.DEEP_19_0_5_0_15.dat      - OGLE-IV deep photometry of the SMC stars trimmed to I < 19 mag, (V-I) > 0.5, E(V-I) < 0.15


Format of these files is shown below:


#    1       2          3         4       5      6       7     8      9 10   11    12 13   14             15           16             17         18        19     20     21      22      23       24       25     26        27          28       29
# STARNO    RA         DEC        X       Y      V      V-I    I     XX XX rmsV    XX XX rmsI             RA           DEC        RA_decimal DEC_decimal  E_VI   SIGMA- SIGMA+  VI_RC   VI_0  E_VI_MODE BOX_ARCM DIST_ARCM   L           B    E_VI_SFD
# eg.
#    1  6:34:12.03 -72:23:02.5 1647.62  151.61 13.060  0.777 12.284   1  0 0.009    2  0 0.007        6:34:12.03  -72:23:02.50     6.570008  -72.384028   0.117  0.032  0.029   0.994   0.877   0.122    13.8    3.19   283.124462  -27.054628  0.123
#    2  6:35:30.06 -72:22:26.3  284.57  272.62 15.432  1.992 13.439  18  0 0.003    3  0 0.005        6:35:30.06  -72:22:26.30     6.591683  -72.373972   0.115  0.050  0.044   0.992   0.876   0.125    18.2    2.34   283.122727  -26.955706  0.129

(XX - please ignore this column).


The Magellanic Clouds reddening data come from the OGLE maps by Skowron
et al. (2021):

https://ui.adsabs.harvard.edu/abs/2021ApJS..252...23S/abstract


PLEASE cite the following paper when using the data or referring 
to these OGLE results:

Udalski et al. 2025, xxxx, arXiv:2506.xxxxx