2018AJ....155..101T


Query : 2018AJ....155..101T

2018AJ....155..101T - Astron. J., 155, 101-101 (2018/February-0)

The spectroscopic variations of the FU Orionis object V960 Mon.

TAKAGI Y., HONDA S., ARAI A., MORIHANA K., TAKAHASHI J., OASA Y. and ITOH Y.

Abstract (from CDS):

We present the results of the spectroscopic monitoring of the FU Orionis type star V960 Mon. Spectroscopic variations of an FU Orionis type star will provide valuable information of its physical nature and the mechanism of the outburst. We conducted medium-resolution (R ∼ 10000) spectroscopic observations of V960 Mon with the 2 m Nayuta telescope at the Nishi-Harima Astronomical Observatory, from 2015 January to 2017 January, for 53 nights in total. We focused on Hα line and nearby atomic lines, and we detected the strength variations in both absorption and emission lines. The observed variation in the equivalent width of the absorption lines corresponds to a decrease in effective temperature and increase in surface gravity. These variations were likely to originate from the luminosity fading of the accretion disk due to the decrease in mass accretion rate.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): protoplanetary disks - stars: formation - stars: pre-main sequence - stars: pre-main sequence

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* FU Ori Or* 05 45 22.3650208559 +09 04 12.296285806   10.72 9.60     F0Iab 742 1
2 V* V960 Mon Or* 06 59 31.5890184824 -04 05 27.764626541   16.11 14.94 13.92 12.67 ~ 34 1
3 UCAC4 430-024261 * 06 59 31.6843981493 -04 05 22.430255781       15.72 15.24 ~ 6 0
4 * 35 Cru cC* 12 31 40.3301092383 -59 25 26.122369782 6.60 6.19 5.53     F7Ib/II 133 0
5 HD 185018 * 19 36 52.4550012728 +11 16 23.508603510   6.834 5.975     G0Ib-II 64 0
6 V* V1515 Cyg Or* 20 23 48.0159810586 +42 12 25.780858811   15.26 13.39 12.03   G0/G2Ib 220 0
7 V* V2493 Cyg Or* 20 58 17.0282353931 +43 53 43.339695195   19.678 18.023 17.67 15.233 K7/M0e 101 0
8 V* V2494 Cyg Or* 20 58 21.0940784636 +52 29 27.710539961           ~ 43 0
9 EM* LkHA 190 Or* 20 58 53.7336698326 +44 15 28.384667940   14.26 12.33 12.13   F7/G3I/IIe 486 0
10 * bet Aqr * 21 31 33.5317148 -05 34 16.232006 4.27 3.71 2.89 2.29 1.84 G0Ib 435 0

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2021.10.20-20:04:38

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