2024RNAAS...8..111P

Query : 2024RNAAS...8..111P

2024RNAAS...8..111P - Research Notes of the AAS, 8, 111 (2024/April-0)

Forty Hypervelocity Stars from Gaia DR3.

PARTHASARATHY M.

Abstract (from CDS):

Forty hypervelocity stars (HVS) are detected from a search for HVS in Gaia DR3 data whose G magnitudes are less than 17.0 and radial velocities are more +400 km s–1. The Gaia DR3 astrophysical parameters and spectra indicate that most of the HVS reported in this study are F, G, and K type metal-poor stars. Eleven stars are at high galactic latitudes. Included in this study are the B components of six nearby visual double stars BD-6 885B, HD 47503B, HD 53229B, HD 95123B, HD 180683B, and HD 202276B which are found to be HVS. The A components of these six visual doubles are less massive late-type stars with normal radial velocities. The source of hypervelocity of the B components is not clear. They may have less luminous and relatively massive degenerate component stars which are not yet detected. Further study of all these HVS is needed.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Hypervelocity stars

Simbad objects: 41

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Number of rows : 41
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 BD-06 885B * 04 22 05.6501713488 -05 51 31.700684124           ~ 2 0
2 Gaia DR2 3207963476278403200 * 05 12 07.5465995119 -06 46 14.564513676           ~ 4 0
3 HD 47503B * 06 32 47.3859118560 -70 18 32.486752332           ~ 2 0
4 Gaia DR3 2921543205513614208 HV* 06 59 45.2250980801 -24 26 31.982058903           ~ 3 0
5 HD 53229B HV* 07 05 52.1421714120 +36 02 57.800616432           ~ 4 0
6 Gaia DR3 3095854143977215616 * 08 08 49.9333162816 +06 04 30.392573559           ~ 2 0
7 Gaia DR3 3083340636500707072 * 08 10 46.2842437565 -00 27 40.920319216           ~ 2 0
8 Gaia DR3 5544764712854179840 HV* 08 11 34.4203643235 -35 16 58.604198888           ~ 2 0
9 Gaia DR3 5515555464906936192 HV* 08 25 22.8843769430 -48 15 09.067840176           ~ 3 0
10 Gaia DR3 3071792530296554240 * 08 35 37.6284078807 -03 36 22.644886762           ~ 2 0
11 Gaia DR3 5625102999536111872 HV* 08 48 34.2079508614 -37 48 27.645496175           ~ 2 0
12 Gaia DR3 577305349033028352 * 09 02 57.9913383872 +01 49 29.081083309           ~ 2 0
13 Gaia DR3 5430581735975161344 HV* 09 12 42.9182857017 -38 41 11.062864855           ~ 3 0
14 Gaia DR3 5325632011075073408 HV* 09 13 01.8449572350 -50 08 56.766039447           ~ 3 0
15 Gaia DR3 5358307297639362304 HV* 10 21 32.7712061016 -51 47 52.907472928           ~ 2 0
16 Gaia DR3 5352190302148489088 HV* 10 36 42.2832203214 -55 51 23.378066339           ~ 2 0
17 HD 95123B HV* 10 57 09.6389002008 -69 58 45.767439840           ~ 6 0
18 Gaia DR3 5337630706626747648 * 11 11 37.0645144942 -60 47 27.389045932           ~ 2 0
19 Gaia DR3 5227401642246690432 HV* 11 32 08.4117389174 -71 58 59.466215506           ~ 2 0
20 Gaia DR3 3699067143758039936 * 12 07 02.6121060426 +00 44 13.994562533           ~ 2 0
21 Gaia DR2 6077622510498751616 HV* 12 31 56.0749483241 -53 55 08.973779655           ~ 3 0
22 Gaia DR3 5843949763886962304 SB* 13 13 10.8300020985 -70 03 36.242154433           ~ 4 0
23 Gaia DR3 6101369964484138752 HV* 14 44 13.3716362344 -42 09 33.233881371           ~ 2 0
24 Gaia DR3 6101408687905214208 HV* 14 46 44.2264788844 -42 05 41.059618231           ~ 2 0
25 Gaia DR3 5936466825463371904 HV* 17 01 41.1926424795 -51 45 20.705356572           ~ 2 0
26 Gaia DR3 4057347680607821696 HV* 17 51 37.0880443385 -28 55 05.159620973           ~ 2 0
27 Gaia DR3 4051413483316567552 HV* 18 22 41.5493340235 -28 28 31.386206149           ~ 2 0
28 Gaia DR3 4092328917916154368 HV* 18 40 35.3757146183 -19 12 07.801915901           ~ 2 0
29 Gaia DR3 4098291913093819776 HV* 18 45 50.9698519221 -19 04 54.528373771           ~ 2 0
30 Gaia DR3 6418433113222352000 HV* 18 51 45.5159556373 -72 11 12.797179288           ~ 3 0
31 Gaia DR3 4504337678883284096 HV* 18 53 09.9506442977 +11 56 15.229470532           ~ 2 0
32 Gaia DR3 4265444618530378240 HV* 18 56 02.9564047865 -00 22 08.917034257           ~ 2 0
33 Gaia DR3 4320112542823692288 HV* 19 12 58.2221060470 +13 49 03.203516376           ~ 2 0
34 HD 180683B PM* 19 15 48.6499805472 +38 22 52.277971764           ~ 3 0
35 Gaia DR3 1825842828672942208 HV* 19 45 08.2182343441 +20 42 56.063385677           ~ 3 0
36 Gaia DR3 1827795080271815040 HV* 19 48 15.0417401725 +22 29 30.847689463           ~ 2 0
37 Gaia DR3 4296894160078561280 HV* 19 54 14.4268552268 +06 25 17.842844742           ~ 3 0
38 Gaia DR3 1752925794453337600 PM* 20 33 11.8492045464 +10 03 55.938202452           ~ 3 0
39 HD 202276 * 21 14 30.9785635536 +04 41 22.962824592   9.08 7.50     K2V 15 0
40 HD 202276B HV* 21 14 31.3492904016 +04 41 21.742813104     12.0     ~ 2 0
41 Gaia DR3 1774513537034328704 * 22 05 41.6118726024 +15 09 55.094229828           ~ 3 0

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