Verification of Photometric Parallaxes with Gaia DR2 Data
Abstract
:1. Introduction
2. Data and Method
3. Results and Conclusions
- A parameterization of stars with mas (i.e., closer than about 4400 pc) and (see Figure 3) is successful, subject to a proper determination of luminosity class.
- A rough estimate of the probability of stars belonging to the Main Sequence was carried out in Paper18 (basing on 2MASS and SDSS photometry data), and only MS stars were parameterized. Obviously, for several stars that estimation turned out to be erroneous (see Figure 4). It seems appropriate to include in the parameterization procedure information about the photometry of non-MS stars (sub-dwarfs, giants and supergiants), drawn from the literature or determined by our own efforts.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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N | SDSS | Gaia DR2 | RA2000 (deg) | DEC2000 (deg) | ||||||
---|---|---|---|---|---|---|---|---|---|---|
1 | 752-301-2-0325-0286 | 3683644191076349312 | 192.1701 | −0.8165 | ||||||
2 | 6005-301-2-0158-0092 | 3689648868888993920 | 192.2168 | −0.7911 | ||||||
3 | 6005-301-2-0158-0061 | 3683643881838700800 | 192.1728 | −0.8335 | ||||||
4 | 1241-301-1-0173-0042 | 3801228953847961600 | 164.2724 | −3.5562 | ||||||
5 | 752-301-2-0324-0052 | 3683656594941905920 | 192.0763 | −0.7852 | ||||||
6 | 1462-301-4-0543-0082 | 3665039324758041600 | 206.7882 | 2.4288 | ||||||
7 | 6121-301-2-0157-0087 | 3683657110337986048 | 192.1002 | −0.7568 | ||||||
8 | 6121-301-2-0157-0037 | 3683644569033472512 | 192.1050 | −0.8108 | ||||||
9 | 1462-301-4-0543-0066 | 3665227032008658560 | 206.7471 | 2.4403 | ||||||
10 | 2194-301-1-0361-0007 | 3801228683265104640 | 164.1956 | −3.5772 | ||||||
11 | 1241-301-1-0173-0102 | 3801228610250558848 | 164.2084 | −3.5842 | ||||||
12 | 7727-301-3-0174-0108 | 2552008097711479808 | 16.2328 | 4.5274 | ||||||
13 | 2194-301-1-0361-0119 | 3801227819976566272 | 164.2968 | −3.5978 | ||||||
14 | 752-301-2-0325-0136 | 3689650277638267392 | 192.1738 | −0.7430 | ||||||
15 | 1462-301-4-0543-0182 | 3665226581036533504 | 206.7508 | 2.4200 | ||||||
16 | 756-301-1-0510-0121 | 3683643679975511808 | 192.1394 | −0.8415 | ||||||
17 | 7727-301-3-0174-0122 | 2552021880262020608 | 16.2512 | 4.6030 | ||||||
18 | 1462-301-4-0544-0120 | 3665040626132812800 | 206.8532 | 2.4438 | ||||||
19 | 7727-301-3-0175-0149 | 2552009442036732416 | 16.2885 | 4.5344 | ||||||
20 | 752-301-2-0324-0183 | 3689662230532099200 | 192.0995 | −0.7200 | ||||||
21 | 1462-301-4-0543-0079 | 3665039290398303104 | 206.7741 | 2.4244 | ||||||
22 | 2194-301-1-0361-0077 | 3801228644610295680 | 164.1954 | −3.5860 | ||||||
23 | 1462-301-4-0543-0060 | 3665226615396253824 | 206.7224 | 2.4265 | ||||||
N | Sp | |||||||||
1 | 20.384 | 0.021 | 19.718 | 4.3 × 10 | 0.1811 | 0.0097 | 0.8123 | 0.821 | G8 | 5.3 |
2 | 17.674 | 0.005 | 17.260 | 8.4 × 10 | 0.3086 | 0.0115 | 0.667 | 0.1211 | G0 | 4.47 |
3 | 17.269 | 0.005 | 16.974 | 8.7 × 10 | 0.2375 | 0.0067 | 0.5096 | 0.1363 | F5 | 3.61 |
4 | 16.408 | 0.003 | 15.646 | 1.4 × 10 | 1.4285 | 0.0592 | 1.4892 | 0.0784 | K2 | 6.08 |
5 | 17.335 | 0.005 | 16.882 | 7.4 × 10 | 0.4255 | 0.0168 | 0.4383 | 0.1179 | G5 | 4.89 |
6 | 17.076 | 0.005 | 16.597 | 1.2 × 10 | 0.6116 | 0.0219 | 0.6022 | 0.1014 | G8 | 5.3 |
7 | 17.251 | 0.005 | 16.998 | 7.8 × 10 | 0.2252 | 0.0047 | 0.2149 | 0.1413 | F5 | 3.61 |
8 | 16.788 | 0.004 | 16.387 | 6.3 × 10 | 0.4524 | 0.0191 | 0.4361 | 0.1048 | G0 | 4.47 |
9 | 14.645 | 0.003 | 14.512 | 6.5 × 10 | 0.4975 | 0.0421 | 0.439 | 0.0439 | F2 | 2.89 |
10 | 16.200 | 0.003 | 15.816 | 7.9 × 10 | 0.5882 | 0.0159 | 0.5176 | 0.0594 | G0 | 4.47 |
11 | 18.110 | 0.006 | 17.596 | 1.9 × 10 | 0.3300 | 0.0066 | 0.2585 | 0.1536 | G5 | 4.89 |
12 | 17.327 | 0.005 | 16.824 | 1.0 × 10 | 0.5571 | 0.0541 | 0.4783 | 0.1317 | G8 | 5.3 |
13 | 18.699 | 0.009 | 18.025 | 3.2 × 10 | 0.4048 | 0.0206 | 0.3235 | 0.3079 | K0 | 5.69 |
14 | 17.689 | 0.005 | 17.169 | 8.9 × 10 | 0.5102 | 0.0343 | 0.4149 | 0.153 | G8 | 5.3 |
15 | 18.616 | 0.008 | 18.106 | 2.0 × 10 | 0.3095 | 0.0258 | 0.1714 | 0.217 | G8 | 5.3 |
16 | 18.440 | 0.007 | 17.658 | 1.2 × 10 | 0.5865 | 0.0510 | 0.4417 | 0.1949 | K2 | 6.08 |
17 | 17.004 | 0.004 | 16.281 | 9.1 × 10 | 1.0050 | 0.0601 | 0.6621 | 0.0933 | K2 | 6.08 |
18 | 19.437 | 0.012 | 19.017 | 4.1 × 10 | 0.1455 | 0.0075 | −0.2226 | 0.4955 | G0 | 4.47 |
19 | 17.547 | 0.005 | 15.965 | 9.4 × 10 | 3.0303 | 0.2470 | 2.6283 | 0.102 | M0 | 7.6 |
20 | 18.248 | 0.006 | 17.784 | 1.2 × 10 | 0.2673 | 0.0174 | −0.2431 | 0.1933 | G0 | 4.47 |
21 | 14.820 | 0.003 | 14.332 | 4.9 × 10 | 1.9047 | 0.0447 | 0.626 | 0.0398 | G8 | 5.3 |
22 | 19.643 | 0.015 | 17.431 | 7.7 × 10 | 6.25 | 0.2734 | 4.6726 | 0.2955 | M4 | 9.92 |
23 | 14.901 | 0.003 | 14.361 | 3.7 × 10 | 2.2988 | 0.0497 | 0.1203 | 0.0418 | K2 | 6.08 |
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Malkov, O.; Karpov, S.; Kovaleva, D.; Sichevsky, S.; Chulkov, D.; Dluzhnevskaya, O.; Kniazev, A.; Mickaelian, A.; Mironov, A.; Murthy, J.; et al. Verification of Photometric Parallaxes with Gaia DR2 Data. Galaxies 2019, 7, 7. https://doi.org/10.3390/galaxies7010007
Malkov O, Karpov S, Kovaleva D, Sichevsky S, Chulkov D, Dluzhnevskaya O, Kniazev A, Mickaelian A, Mironov A, Murthy J, et al. Verification of Photometric Parallaxes with Gaia DR2 Data. Galaxies. 2019; 7(1):7. https://doi.org/10.3390/galaxies7010007
Chicago/Turabian StyleMalkov, Oleg, Sergey Karpov, Dana Kovaleva, Sergey Sichevsky, Dmitry Chulkov, Olga Dluzhnevskaya, Alexey Kniazev, Areg Mickaelian, Alexey Mironov, Jayant Murthy, and et al. 2019. "Verification of Photometric Parallaxes with Gaia DR2 Data" Galaxies 7, no. 1: 7. https://doi.org/10.3390/galaxies7010007