Near Infrared High Resolution Spectroscopy and Spectro-astrometry of Gas in Disks around Herbig Ae/Be Stars

TL;DR

This review discusses how high resolution near infrared spectroscopy and spectro-astrometry are used to study gas in disks around Herbig Ae/Be stars, revealing signs of planet formation and accretion mechanisms.

Contribution

It provides an overview of observational techniques, addresses artifacts affecting measurements, and emphasizes the importance of long-term monitoring of these stellar systems.

Findings

Identification of planet formation signposts

Insights into accretion mechanisms

Discussion of measurement artifacts and mitigation strategies

Abstract

In this review, we describe how high resolution near infrared spectroscopy and spectro-astrometry have been used to study the disks around Herbig~Ae/Be stars. We show how these tools can be used to identify signposts of planet formation and elucidate the mechanism by which Herbig Ae/Be stars accrete. We also highlight some of the artifacts that can complicate the interpretation of spectro-astrometric measurements and discuss best practices for mitigating these effects. We conclude with a brief discussion of the value of long term monitoring of these systems.