Table 2.
Physical and X-ray properties of very red giant stars identified with X-ray sources.
| Gaia DR3 ID | Name | BP-RP | Gabs | Spec | CR | Err | Exp. | Li | fX, −14 | log(LX) | FUV – NUV |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4644856055150677632 | CI Hyi | 4.31 | −2.27 | M5/7III | 0.083 | 0.023 | 217.6 | 26.8 | 7.50 | 30.69 | n.a. |
| 4748477123328077696 | R Hor | 5.60 | −0.70 | M5-7e | 1.143 | 0.072 | 224.4 | 1447.2 | 102.86 ( * ) | 31.38 ( * ) | n.a. |
| 5159194331764625920 | DR Eri | 2.64 | −1.96 | M2/3III | 0.030 | 0.014 | 191.0 | 7.8 | 2.66 | 30.31 | 0.29 |
| 5100253911446411264 | BH Eri | 3.86 | −2.34 | M6 | 0.082 | 0.023 | 195.2 | 27.5 | 7.40 | 30.98 | n.a. |
| 4723045075781077760 | UU Ret | 2.64 | −2.31 | M3III | 0.023 | 0.009 | 400.2 | 13.4 | 2.10 | 30.43 | n.a. |
| 4616109220563904768 | U Men | 3.75 | 0.53 | M3e | 0.647 | 0.052 | 266.4 | 637.2 | 58.24 ( * ) | 31.28 ( * ) | 2.35 |
| 4772353701224784640 | CD-51 1503 | 2.96 | −1.90 | S5,2 | 0.113 | 0.017 | 451.0 | 105.3 | 10.19 | 31.08 | n.a. |
| 4620697620025724544 | CPD-8486 | 3.01 | −1.64 | S4,4 | 0.071 | 0.017 | 314.5 | 41.6 | 6.43 | 30.71 | 2.59 |
| 893132234387415808 | BD+32 1528 | 3.08 | −1.12 | 0.068 | 0.032 | 77.0 | 11.0 | 6.14 | 30.87 | 1.91 | |
| 5193680960648176768 | TYC9506-1836-1 | 3.79 | −1.52 | 0.063 | 0.015 | 357.2 | 41.7 | 5.63 | 30.76 | 3.13 | |
| 5761301055347596800 | MV Hya | 2.63 | −1.95 | M3/4III | 0.050 | 0.026 | 87.8 | 9.2 | 4.50 | 30.38 | n.a. |
| 645414291872801536 | EH Leo | 2.76 | −2.84 | 0.296 | 0.066 | 75.2 | 71.1 | 26.68 | 31.31 | 2.09 | |
| 5195956296883496832 | HD 84048 | 2.58 | −1.84 | M1/2 | 0.067 | 0.014 | 396.9 | 56.1 | 6.04 | 30.80 | 0.41 |
| 794754943320201600 | R LMi | 6.31 | −0.33 | M6.5-9e | 0.079 | 0.033 | 79.7 | 18.0 | 7.15 ( * ) | 30.32 ( * ) | n.a. |
| 3491583497096278144 | WW Crt | 2.85 | −1.18 | M4III | 0.653 | 0.076 | 128.1 | 287.9 | 58.78 | 31.25 | 3.35 |
| 6173329362681684736 | TW Cen | 5.30 | −1.34 | M6-8Ib-II | 0.067 | 0.022 | 172.0 | 18.5 | 6.06 | 30.67 | 3.99 |
| 6738529604088911104 | IRAS19204-3959 | 3.16 | −0.70 | 0.061 | 0.032 | 82.2 | 8.9 | 5.52 | 30.82 | n.a. | |
| 6713213967334901376 | HD 181817 | 2.51 | −2.04 | M2III | 0.061 | 0.029 | 83.7 | 10.3 | 5.47 | 30.65 | 2.68 |
| 6342796540114659200 | HD 199203 | 2.56 | −2.55 | M2/3(III) | 0.076 | 0.024 | 177.4 | 20.9 | 6.86 | 30.86 | n.a. |
Notes. Columns 1 and 2 give the Gaia DR3 IDs and another name of the sources. Columns 3 and 4 give the HR diagram position (i.e., the Gaia BP-RP color and absolute G magnitude). Column 5 provides a spectral type estimate. Columns 6 and 7 list the recorded count rates per second and the corresponding errors. Column 8 reports the exposure time in seconds, and column 9 shows the detection likelihood. Column 10 provides the X-ray flux in 10−14 erg s−1. Column 11 gives the derived X-ray luminosities in erg s−1, and column 12 gives the FUV-NUV colors derived from GALEX. (See text for details.) The stars marked with “*” are likely affected by optical contamination (again, see text for details).
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