Results 31 to 40 of about 1,303,382 (121)
Discovery of new embedded Herbig-Haro objects in the
, 2001 We report here the discovery of a 30´´-chain of embedded Herbig-Haro (HH) objects in the ρ Ophiuchi dark cloud. These HH objects were first detected during a deep $K_\mathrm{S}$-band observation (completeness magnitude for point source ~19) made with ...
N. Grosso +3 more
core +1 more source
Ejection Patterns in the DG Tau Jet over the Last 40 yr: Insights into Mass Accretion Variability
The Astrophysical JournalWe aim to clarify the link between mass accretion and ejection by analyzing DG Tau’s jet observations from optical and near-infrared data spanning 1984–2019, alongside photometric variations between 1983 and 2015.
Tae-Soo Pyo +3 more
doaj +1 more source
Molecular Studies of Herbig-Haro Objects [PDF]
Symposium - International Astronomical Union, 1992 Recent ultraviolet, infrared, millimeter and centimeter-wavelength observations have revealed that HH objects are also sources of molecular line emission. Infrared observations have shown that H2 line emission in HH objects presents a wide and complex variety of morphologies, being in most of the cases similar to that observed at optical wavelengths ...
openaire +1 more source
Shock-induced PDR in the Herbig-Haro object HH 2 [PDF]
Astronomy & Astrophysics, 2005 We report mid-infrared ($5-17\mu m$) and SO, CO, $^{13}$CO millimeter line observations of the protostellar jet HH~2 and the parental molecular cloud. We have detected for the first time mid-infrared emission along a protostellar jet. We find that the outflowing gas extends much further away than the Herbig-Haro object HH~2, showing direct evidence ...
Lefloch, B. +3 more
openaire +5 more sources
Herbig-Haro objects - tracers of the formation of low-mass stars and sub-stellar objects [PDF]
, 2007 Herbig-Haro objects (HHOs) are caused by outflows from young objects. Since the outflow relies on mass accretion from a circumstellar disk, it indicates ongoing growth.
Stecklum, Bringfried +2 more
core +1 more source
Multiple Shells Driven by Disk Winds: ALMA Observations in the HH 30 Outflow
The Astrophysical JournalWe present archival Atacama Large Millimeter/submillimeter Array band 6 observations of the ^13 CO ( J = 2–1) and ^12 CO ( J = 2–1) molecular line emission of the protostellar system associated with HH 30.
J. A. López-Vázquez +5 more
doaj +1 more source
Low-excitation Herbig-Haro objects and interstellar extinction [PDF]
, 1985 Previous work on low-excitation Herbig-Haro (HH) objects has confirmed the existence of a strongly-enhanced hydrogen two-photon continuum which is produced by low-velocity shocks in neutral material.
Schwartz, R. D.
core
ALMA High-resolution Observation of the HH 46/47 Outflow/Disk/Envelope System
The Astrophysical JournalWe present $0\mathop{.}\limits^{^{\prime\prime} }1$ (∼50 au) resolution Atacama Large Millimeter/submillimeter Array (ALMA) observations of the HH 46/47 molecular outflow and its envelope–disk system.
Heyi Zhang +7 more
doaj +1 more source
IUE observations of Herbig-Haro and related objects [PDF]
, 1982 The I.U.E. spectra of the Herbig-Haro objectives H-H 1, H-H 2H, H-H 2G and H-H 32 A are considered. In order to obtain a better understanding of the physics of these intriguing objects and of the formation of the ultraviolet continua and emission lines ...
Boehm, K. H.
core
The Astrophysical JournalWe present the Atacama Large Millimeter/submillimeter Array Band 7 observations of the CO ( J = 3−2) line emission of the protostellar system HH 212 at ∼24 au spatial resolution and compare them to those of the SiO ( J = 8−7) and SO ( J = 8−7) line ...
J. A. López-Vázquez +10 more
doaj +1 more source