2017A&A...598A...8P


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST07:12:13

2017A&A...598A...8P - Astronomy and Astrophysics, volume 598A, 8-8 (2017/2-1)

The multiple young stellar objects of HBC 515: An X-ray and millimeter-wave imaging study in (pre-main sequence) diversity.

PRINCIPE D.A., SACCO G.G., KASTNER J.H., WILNER D., STELZER B. and MICELA G.

Abstract (from CDS):

We present Chandra X-ray Observatory and Submillimeter Array (SMA) imaging of HBC 515, a system consisting of multiple young stellar objects (YSOs). The five members of HBC 515 represent a remarkably diverse array of YSOs, ranging from the low-mass Class I/II protostar HBC 515B, through Class II and transition disk objects (HBC 515D and C, respectively), to the "diskless", intermediate-mass, pre-main sequence (pre-MS) binary HBC 515A. Our Chandra/ACIS imaging establishes that all five components are X-ray sources, with HBC 515A - a subarcsecond-separation binary that is partially resolved by Chandra - being the dominant X-ray source. We detect an X-ray flare associated with HBC 515B. In the SMA imaging, HBC 515B is detected as a strong 1.3 mm continuum emission source; a second, weaker mm continuum source is coincident with the position of the transition disk object HBC 515C. These results strongly support the protostellar nature of HBC 515B, and firmly establish HBC 515A as a member of the rare class of relatively massive, X-ray luminous weak-lined T Tauri stars that are binaries and have shed their disks at very early stages of pre-MS evolution. The coexistence of two such disparate objects within a single, presumably coeval multiple YSO system highlights the influence of pre-MS star mass, binarity, and X-ray luminosity in regulating the lifetimes of circumstellar, planet-forming disks, and the timescales of star-disk interactions.

Abstract Copyright: © ESO, 2017

Journal keyword(s): X-rays: stars - stars: evolution - binaries: general - circumstellar matter - stars: formation - stars: pre-main sequence

Simbad objects: 23

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Number of rows : 23

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 2MASS J04141188+2811535 Y*O 04 14 11.8823284464 +28 11 53.410193839 18.72         M6e 47 0
2 HD 283447 Or* 04 14 12.9232870093 +28 12 12.378540314 13.17 12.07 10.68 9.45 8.67 K3Ve 380 0
3 V* V410 Tau Or* 04 18 31.1083261392 +28 27 16.155411536   12.13 10.75 8.45 9.408 K3Ve 424 0
4 HD 283572 Or* 04 21 58.8482823933 +28 18 06.511915195   9.80 9.03 9.14   G5IVe 267 0
5 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1217 0
6 V* V826 Tau TT* 04 32 15.8394065935 +18 01 38.751126168   13.51 12.074   10.312 K7.0 164 0
7 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3479 0
8 QSO J0530+13 QSO 05 30 56.41672 +13 31 55.1495     20.0 19.35   ~ 879 1
9 QSO B0529+075 QSO 05 32 38.9982037218 +07 32 43.360445631   19.0   17.50   ~ 172 1
10 LDN 1630 DNe 05 45.5 -00 59           ~ 350 0
11 HBC 502 TT* 05 46 07.8800816831 -00 11 56.886181309     14.5     K3 34 0
12 [OH83] L1622 6 Y*O 05 54 01.8923766042 +01 40 27.237219054       15.76 12.67 ~ 7 0
13 [MGM2012] 3459 Y*O 05 54 02.0127156616 +01 40 55.865169274         14.68 M 7 0
14 HD 288313A * 05 54 02.982986 +01 40 21.94579   11.72 10.65     ~ 3 0
15 HD 288313 Or* 05 54 02.9907527336 +01 40 21.814523504   10.98 9.95 9.72 9.55 K2V 27 1
16 HD 288313B * 05 54 03.028730 +01 40 21.96775   12.38 10.83     ~ 2 0
17 [MGM2012] 3457 Y*O 05 54 03.2729841756 +01 40 26.496906692           ~ 3 0
18 LDN 1622 DNe 05 54 28 +01 48.2           ~ 94 0
19 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2704 2
20 Haro 1-6 Or* 16 26 03.0281201323 -24 23 36.193999164   14.15 14.01 12.38 10.80 K0 204 1
21 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3027 0
22 HD 155555 RS* 17 17 25.5047544575 -66 57 03.732827572 7.795 7.499 6.723   6.39 K1Vp 249 2
23 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 2006 1

    Equat.    Gal    SGal    Ecl

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2020.07.13-07:12:13

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