# Spitzer's view on aromatic and aliphatic hydrocarbon emission in Herbig Ae stars

@article{Acke2010SpitzersVO,
title={Spitzer's view on aromatic and aliphatic hydrocarbon emission in Herbig Ae stars},
author={Bram Acke and Jeroen Bouwman and A. Juhash and Th. Henning and M. van den Ancker and Gwendolyn Meeus and A. Tielens and L. B. F. M. Waters},
journal={The Astrophysical Journal},
year={2010},
volume={718},
pages={558-574}
}
• B. Acke, +5 authors L. Waters
• Published 6 June 2010
• Physics
• The Astrophysical Journal
The chemistry of astronomical hydrocarbons, responsible for the well-known infrared emission features detected in a wide variety of targets, remains enigmatic. Here we focus on the group of young intermediate-mass Herbig Ae stars. We have analyzed the aliphatic and polycyclic aromatic hydrocarbon (PAH) emission features in the infrared spectra of a sample of 53 Herbig Ae stars, obtained with the Infrared Spectrograph aboard the Spitzer Space Telescope. We confirm that the PAH-to-stellar…
84 Citations

## Figures and Tables from this paper

Dust Evolution in Protoplanetary Disks Around Herbig Ae/Be Stars—the Spitzer View
In this paper, we present mid-infrared spectra of a comprehensive set of Herbig Ae/Be stars observed with the Spitzer Space Telescope. The signal-to-noise ratio of these spectra is very high, ranging
Polycyclic Aromatic Hydrocarbons in Protoplanetary Disks around Herbig Ae/Be and T Tauri Stars
• Physics
• 2017
A distinct set of broad emission features at 3.3, 6.2, 7.7, 8.6, 11.3, and 12.7 $\mu$m, is often detected in protoplanetary disks (PPDs). These features are commonly attributed to polycyclic aromatic
Observations of hydrocarbon emission in disks around young stars
I give an overview of the recent scientific results based on observations of PAH emission from circumstellar disks around young stars. The stellar radiation field plays a key role in the excitation
Polycyclic aromatic hydrocarbons in protoplanetary disks: emission and X-ray destruction
• Physics
• 2012
We study the PAH emission from protoplanetary disks. First, we discuss the dependence of the PAH band ratios on the hardness of the absorbed photons and the temperature of the stars. We show that the
Dust and Polycyclic Aromatic Hydrocarbon in the Pre-transitional Disk around HD 169142
• Physics
• 2016
The pre-transitional disk around the Herbig Ae star HD 169142 shows a complex structure of possible ongoing planet formation in dust thermal emission from the near infrared (IR) to millimeter
A Study of Ro-vibrational OH Emission from Herbig Ae/Be Stars
• Physics
• 2016
We present a study of ro-vibrational OH and CO emission from 21 disks around Herbig Ae/Be stars. We find that the OH and CO luminosities are proportional over a wide range of stellar ultraviolet
Carbon-rich dust past the asymptotic giant branch: Aliphatics, aromatics, and fullerenes in the Magellanic clouds
Infrared spectra of carbon-rich objects that have evolved off the asymptotic giant branch reveal a range of dust properties, including fullerenes, polycyclic aromatic hydrocarbons (PAHs), aliphatic
The Spitzer spectroscopic survey of S-type stars
Context. S-type AGB stars are thought to be in the transitional phase between M-type and C-type AGB stars. Because the composition of the circumstellar environment reflects the photospheric
DUST AND POLYCYCLIC AROMATIC HYDROCARBON IN THE HD 34700 DEBRIS DISK
• Physics
• 2015
The debris disk around the Vega-type star HD 34700 is detected in dust thermal emission from the near infrared (IR) to millimeter (mm) and submm wavelength range. Also detected is a distinct set of
Observations of Interstellar Carbon Compounds
Infrared absorption and emission features observed spectroscopically in our Galaxy allow to probe the composition of solid dust grains, their evolution and thus follow the cycling of matter in the

## References

SHOWING 1-10 OF 53 REFERENCES
PAH Emission from Herbig Ae/Be Stars
We present spectra of a sample of Herbig Ae and Be (HAeBe) stars obtained with the Infrared Spectrograph on Spitzer. All but one of the Herbig stars show emission from PAHs, and seven of the spectra
When an old star smolders: On the detection of hydrocarbon emission from S-type AGB stars
Polycyclic aromatic hydrocarbons (PAHs) produce characteristic infrared emission bands that have been observed in a wide range of astrophysical environments, where carbonaceous material is subjected
The characteristics of the IR emission features in the spectra of Herbig Ae stars: evidence for chemical evolution
Context. Infrared (IR) spectra provide a prime tool to study the characteristics of polycyclic aromatic hydrocarbon (PAH) molecules in regions of star formation. Herbig Ae/Be stars are a class of
PAHs in circumstellar disks around Herbig Ae/Be stars
• Physics
• 2004
We investigate the presence and properties of PAHs on the surface of circumstellar disks around Herbig Ae/Be stars by comparing the predictions of disk models with observations. We present results of
MID-INFRARED SPECTRA OF POLYCYCLIC AROMATIC HYDROCARBON EMISSION IN HERBIG Ae/Be STARS
We present spectra of four Herbig Ae/Be stars obtained with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope. All four of the sources show strong emission from polycyclic aromatic
ISO spectroscopy of disks around Herbig Ae/Be stars ,
We have investigated the infrared spectra of all 46 Herbig Ae/Be stars for which spectroscopic data are available in the ISO data archive. Our quantitative analysis of these s pectra focuses on the
A 10 μm spectroscopic survey of Herbig Ae star disks: Grain growth and crystallization
We present spectroscopic observations of a large sample of Herbig Ae stars in the 10 µm spectral region. We perform compositional fits of the spectra based on properties of homogeneous as well as
Polycyclic Aromatic Hydrocarbon Emission in the 15-21 Micron Region
• Physics
• 2004
Observations from the Spitzer Space Telescope have drawn attention to spectroscopic structure longward of 15 μm that is associated with objects showing prominent unidentified infrared (UIR) bands in
The Unusual Hydrocarbon Emission from the Early Carbon Star HD 100764: The Connection between Aromatics and Aliphatics
We have used the Infrared Spectrograph (IRS) on the Spitzer Space Telescope to obtain spectra of HD 100764, an apparently single carbon star with a circumstellar disk. The spectrum shows emission
IRAS 08572+3915: constraining the aromatic versus aliphatic content of interstellar HACs
We analyze dust features present in the mid-infrared (Spitzer) and recently published L-band (UKIRT) spectra of the infrared galaxy IRAS 08572+3915. The line of sight toward the AGN nucleus crosses a