2018A&A...616L...7M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.03CEST21:20:42

2018A&A...616L...7M - Astronomy and Astrophysics, volume 616, L7-7 (2018/8-1)

A reevaluation of the 2MASS zero points using CALSPEC spectrophotometry complemented with Gaia Data Release 2 parallaxes.

MAIZ-APELLANIZ J. and PANTALEONI GONZALEZ M.

Abstract (from CDS):


Context. 2MASS is the reference survey in the near-infrared (NIR) part of the spectrum due to its whole-sky coverage, large dynamic range, and proven calibration uniformity. However, previous studies disagree on the value of the zero points (ZPs) for its three bands JHK at the hundredth of a magnitude level. The disagreement should become more noticeable now that Gaia provides whole-sky optical photometry calibrated below that level.
Aims. We want to establish the value of the 2MASS ZPs based on NICMOS/HST spectrophotometry of the CALSPEC standard stars and test it with the help of Gaia DR2 parallaxes.
Methods. We have computed the synthetic JHK photometry for a sample of stars using the HST CALSPEC spectroscopic standards and compared it with their 2MASS magnitudes to evaluate the ZPs. We have tested our results by analyzing a sample of FGK dwarfs with excellent 2MASS photometry and accurate Gaia DR2 parallaxes.
Results. The Vega ZPs for 2MASS J, H, and K are found to be -0.025±0.005, 0.004±0.005, and -0.015±0.005mag, respectively. The analysis of the FGK sample indicates that the new ZPs are more accurate than previous ones.

Abstract Copyright: © ESO 2018

Journal keyword(s): surveys - methods: data analysis - techniques: photometric

Simbad objects: 23

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Number of rows : 23

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 983 0
2 GD 71 WD* 05 52 27.6197286025 +15 53 13.228639956 11.675 12.783 13.032 13.169 13.337 DA1.5 334 0
3 AG+81 266 HS* 09 21 19.1767236633 +81 43 27.629923778 10.392 11.59 11.95 12.09 12.281 sdO 58 0
4 GD 153 WD* 12 57 02.3224875106 +22 01 52.634392478 11.883 13.060 13.349 13.488 13.669 DA1.2 312 0
5 LAWD 52 WD* 13 38 50.4780798626 +70 17 07.641423392 11.807 12.54 12.60 13.01 12.979 DA2.4 196 0
6 TYC 4413-304-1 PM* 14 51 57.9795773893 +71 43 17.393377038 12.751 12.84 12.16 12.05 11.313 G0 32 0
7 GSPC P177-D * 15 59 13.5785609612 +47 36 41.905095533   14.17 13.52 13.42   G0 35 0
8 UCAC3 292-117285 * 16 19 46.1029174395 +55 34 17.862527064   17.09 16.23 16.41   G0-5 10 1
9 GSC 02581-02323 * 16 31 33.8125078770 +30 08 46.398483547 13.576 12.972 12.917 12.564 12.212 G2V 62 0
10 VB 8 Fl* 16 55 35.2561420232 -08 23 40.752903617   18.7 16.916 14.566 12.24 M7Ve 381 0
11 TYC 4424-1286-1 * 17 32 52.6303424216 +71 04 43.121034344   12.75 12.21     A4V 7 0
12 TYC 4207-219-1 * 17 40 34.6792693584 +65 27 14.773701400   12.95 12.12     A6V 10 0
13 2MASS J17430448+6655015 * 17 43 04.4857200866 +66 55 01.662639339   13.80 13.525     A5V 9 0
14 UCAC3 313-62260 * 17 55 16.2159265629 +66 10 11.606626474   14.39 13.18 13.00   K0.5III 9 0
15 2MASS J17583798+6646522 * 17 58 37.9945876723 +66 46 52.112481269   15.10 13.80     K1.5III 18 0
16 2MASS J18022716+6043356 * 18 02 27.17 +60 43 35.7   12.0 11.985     A2V 7 0
17 HD 165459 * 18 02 30.7410086899 +58 37 38.157415821   6.98 6.86   6.70 A1V 32 0
18 TYC 4209-1396-1 * 18 05 29.2754546717 +64 27 52.126965554   12.54 12.74     A4V 10 0
19 TYC 4205-1677-1 * 18 12 09.5671791530 +63 29 42.258719727   11.94 12.01     A3V 10 0
20 LAWD 87 WD* 21 32 16.2327559970 +00 15 14.398335415 13.717 14.634 14.674 14.675 14.676 DB4 165 1
21 HD 209458 V* 22 03 10.7729598762 +18 53 03.548248479   8.21 7.63     F9V 994 1
22 BD+17 4708 SB* 22 11 31.3751899315 +18 05 34.158392398 9.73 9.91 9.46 9.03 8.70 sdF8 535 0
23 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 552 1

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2020.07.03-21:20:42

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