2012A&A...542L..14S


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.12CET03:10:19

2012A&A...542L..14S - Astronomy and Astrophysics, volume 542, L14-14 (2012/6-1)

GREAT [C II] and CO observations of the BD+40deg4124 region.

SANDELL G., WIESEMEYER H., REQUENA-TORRES M.A., HEYMINCK S., GUESTEN R., STUTZKI J., SIMON R. and GRAF U.U.

Abstract (from CDS):

The BD+40 4124 region was observed with high angular and spectral resolution with the German heterodyne instrument GREAT in CO J=13-12 and [CII] on SOFIA. These observations show that the [CII] emission is very strong in the reflection nebula surrounding the young Herbig Ae/Be star BD+40 4124. A strip map over the nebula shows that the [CII] emission approximately coincides with the optical nebulosity. The strongest [CII] emission is centered on the B2 star and a deep spectrum shows that it has faint wings, which suggests that the ionized gas is expanding. We also see faint CO J=13-12 at the position of BD+40 4124, which suggests that the star may still be surrounded by an accretion disk. We also detected [CII] emission and strong CO J=13-12 toward V1318 Cyg. Here the [CI] emission is fainter than in BD+40 4124 and appears to come from the outflow, since it shows red and blue wings with very little emission at the systemic velocity, where the CO emission is quite strong. It therefore appears that in the broad ISO beam the [CII] emission was dominated by the reflection nebula surrounding BD+40 4124, while the high J CO lines originated from the adjacent younger and more deeply embedded binary system V1318 Cyg.

Abstract Copyright:

Journal keyword(s): circumstellar matter - ISM: molecules - stars: pre-main sequence - photon-dominated region (PDR) - stars: variables: T Tauri, Herbig Ae/Be

Simbad objects: 8

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Number of rows : 8

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 J08254384-5100326 Y*O 08 25 43.85 -51 00 32.7           ~ 295 1
2 BD+40 4124 Ae* 20 20 28.2415737117 +41 21 51.527810947 11.11 11.36 10.62 10.510   B2Ve 271 1
3 EM* LkHA 224 Ae* 20 20 29.3500765489 +41 21 28.448014439 14.82 14.08 12.93 12.05 11.08 A4:Ve 90 0
4 EM* LkHA 225 Ae* 20 20 30.5937486026 +41 21 26.337058307   18.2 19.17     A4:Ve 71 0
5 EM* MWC 349 Em* 20 32 45.6328 +40 39 36.143   15.88 13.15 12.13   Bep 689 1
6 GRS G081.70 +00.50 SFR 20 39 01.6 +42 19 38           O4.5 929 0
7 NGC 7023 BNe 21 01 36.9 +68 09 48   7.20       ~ 604 0
8 HD 200775 Ae* 21 01 36.9184805541 +68 09 47.770037306 7.34 7.73 7.36     B2Ve 502 0

    Equat.    Gal    SGal    Ecl

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2019.11.12-03:10:19

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