ExoMol molecular line lists – IX. The spectrum of AlO

Abstract

Accurate line lists are calculated for aluminium monoxide covering the pure rotation, rotation-vibration and electronic (B -X blue-green and A -X infrared bands) spectrum. Line lists are presented for the main isotopologue, 27 Al 16 O, as well as for 27 Al 17 O, 27 Al 18 O and 26 Al 16 O. These line lists are suitable for high temperatures (up to 8000 K) including those relevant to exoplanetary atmospheres and cool stars. A combination of empirical and ab initio methods is used: the potential energy curves were previously determined to high accuracy by fitting to extensive data from analysis of laboratory spectra; a high quality ab initio dipole moment curve is calculated using quadruple zeta basis set and the multi-reference configuration interaction (MRCI) method. Partition functions plus full line lists of transitions are made available in an electronic form as supplementary data to this article and at www.exomol.com.

New avenues for thermal inversions in atmospheres of hot Jupiters

“…3. These cross sections have been derived from the latest line lists of each of these species (Patrascu et al 2015;Yurchenko et al 2016;Rivlin et al 2015;Yadin et al 2012). They all have distinct cross sections, but over the visible spectrum they provide similar strong opacity.…”

ExoMol line lists XXXI: spectroscopy of lowest eights electronic states of C2

“…These empirical curves were obtained by refining ab initio curves using a recent set of experimentally-derived (MARVEL) term values of C 2 (Furtenbacher et al 2016). This methodology has been used for similar studies as part of the ExoMol project including the diatomic molecules AlO (Patrascu et al 2015), ScH (Lodi et al 2015), CaO (Yurchenko et al 2016b…”

Mass–Metallicity Trends in Transiting Exoplanets from Atmospheric Abundances of H2O, Na, and K

“…2 O (Rothman et al 2010), Na (Allard et al 2019), K (Allard et al 2016), CH 4 (Yurchenko & Tennyson 2014), NH 3 (Yurchenko et al 2011), HCN (Barber et al 2014), CO (Rothman et al 2010), and H 2 -H 2 and H 2 -He collision induced absorption (CIA;Richard et al 2012). Additionally, following previous studies(Chen et al 2018;von Essen et al 2019;Sedaghati et al 2017;, we include absorption due to Li(Kramida et al 2018) for WASP-127b, AlO(Patrascu et al 2015) …”