2020ApJ...899..130S

Query : 2020ApJ...899..130S

2020ApJ...899..130S - Astrophys. J., 899, 130-130 (2020/August-3)

Gaia 18dvy: a new FUor in the Cygnus OB3 association.

SZEGEDI-ELEK E., ABRAHAM P., WYRZYKOWSKI L., KUN M., KOSPAL A., CHEN L., MARTON G., MOOR A., KISS C., PAL A., SZABADOS L., VARGA J., VARGA-VEREBELYI E., ANDREAS C., BACHELET E., BISCHOFF R., BODI A., BREEDT E., BURGAZ U., BUTTERLEY T., CARRASCO J.M., CEPAS V., DAMLJANOVIC G., GEZER I., GODUNOVA V., GROMADZKI M., GURGUL A., HARDY L., HILDEBRANDT F., HOFFMANN S., HUNDERTMARK M., IHANEC N., JANULIS R., KALUP C., KACZMAREK Z., KONYVES-TOTH R., KREZINGER M., KRUSZYNSKA K., LITTLEFAIR S., MASKOLIUNAS M., MESZAROS L., MIKOLAJCZYK P., MUGRAUER M., NETZEL H., ORDASI A., PAKSTIENE E., RYBICKI K.A., SARNECZKY K., SELI B., SIMON A., SISKAUSKAITE K., SODOR A., SOKOLOVSKY K.V., STENGLEIN W., STREET R., SZAKATS R., TOMASELLA L., TSAPRAS Y., VIDA K., ZDANAVICIUS J., ZIELINSKI M., ZIELINSKI P. and ZIOLKOWSKA O.

Abstract (from CDS):

We present optical-infrared photometric and spectroscopic observations of Gaia 18dvy, located in the Cygnus OB3 association at a distance of 1.88 kpc. Gaia 18dvy was noted by the Gaia alerts system when its light curve exhibited a >=4 mag rise in 2018-2019. The brightening was also observable at mid-infared wavelengths. The infrared colors of Gaia 18dvy became bluer as the outburst progressed. Its optical and near-infrared spectroscopic characteristics in the outburst phase are consistent with those of bona fide FU Orionis-type young eruptive stars. The progenitor of the outburst is probably a low-mass K-type star with an optical extinction of ∼3 mag. A radiative transfer modeling of the circumstellar structure, based on the quiescent spectral energy distribution, indicates a disk with a mass of 4 x 10–3 M☉. Our simple accretion disk modeling implies that the accretion rate had been exponentially increasing for more than 3 yr until mid-2019, when it reached a peak value of 6.9 x 10–6 M☉ yr–1. In many respects, Gaia 18dvy is similar to the FU Ori-type object HBC 722.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Star formation - Accretion - Protoplanetary disks - Eruptive variable stars

VizieR on-line data: <Available at CDS (J/ApJ/899/130): table1.dat>

Simbad objects: 16

goto Full paper

goto View the references in ADS

Number of rows : 16
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 V* V1180 Cas Or* 02 33 01.5361317744 +72 43 26.807653884 22.476 21.433 19.280 18.029 16.878 K7 26 0
2 V* T Tau TT* 04 21 59.4319873992 +19 32 06.432393336   11.22 10.12 9.80   K0IV/Ve 1456 1
3 V* V582 Aur Or* 05 25 51.9742464144 +34 52 30.100223352   17.0 14.78 13.49 12.23 K3 41 0
4 V* FU Ori Or* 05 45 22.3647842544 +09 04 12.291320064   10.72 9.60     F0Iab 888 1
5 V* V1647 Ori Or* 05 46 13.1370578472 -00 06 04.885093296     18.1     M3.9 317 1
6 V* V1184 Tau Or* 05 47 03.7742454720 +21 00 34.786359684       14.66   G5III/IVne 42 0
7 2MASS J08104579-3604310 Or* 08 10 45.7934159760 -36 04 31.006581240           ~ 22 0
8 BD+25 2534 HS* 12 37 23.5161671712 +25 03 59.867922240 9.117 10.26 10.59 10.642 10.809 sdB1(k) 268 0
9 BD+33 2642 pA* 15 51 59.8854348048 +32 56 54.329485272 9.806 10.61 10.73 10.884 10.961 O7p 456 0
10 2MASS J19310560+1827525 Or* 19 31 05.5881891528 +18 27 52.234225920           ~ 44 0
11 2MASS J20050603+3629135 Or* 20 05 06.0330485280 +36 29 13.587344484           ~ 31 0
12 Ass Cyg OB 3 As* 20 07 +35.9           ~ 190 0
13 HD 192001 SB* 20 11 01.7066647560 +42 07 36.402475404 7.97 8.52 8.29     O9.5IV 60 0
14 * P Cyg s*b 20 17 47.2019733389 +38 01 58.549132671 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1200 1
15 V* V2492 Cyg Or* 20 51 26.2367188536 +44 05 23.869354488   20.2   18.3   F-GII/MI 107 0
16 V* V2493 Cyg Or* 20 58 17.0280367392 +43 53 43.341681156   19.678 18.023 17.67 15.233 M4.6 139 0

To bookmark this query, right click on this link: simbad:objects in 2020ApJ...899..130S and select 'bookmark this link' or equivalent in the popup menu